diff options
Diffstat (limited to 'fs/jbd2')
| -rw-r--r-- | fs/jbd2/Makefile | 4 | ||||
| -rw-r--r-- | fs/jbd2/checkpoint.c | 54 | ||||
| -rw-r--r-- | fs/jbd2/commit.c | 122 | ||||
| -rw-r--r-- | fs/jbd2/journal.c | 454 | ||||
| -rw-r--r-- | fs/jbd2/recovery.c | 46 | ||||
| -rw-r--r-- | fs/jbd2/revoke.c | 146 | ||||
| -rw-r--r-- | fs/jbd2/transaction.c | 244 |
7 files changed, 535 insertions, 535 deletions
diff --git a/fs/jbd2/Makefile b/fs/jbd2/Makefile index 54aca4868a36..802a3413872a 100644 --- a/fs/jbd2/Makefile +++ b/fs/jbd2/Makefile @@ -2,6 +2,6 @@ # Makefile for the linux journaling routines. # -obj-$(CONFIG_JBD) += jbd.o +obj-$(CONFIG_JBD2) += jbd2.o -jbd-objs := transaction.o commit.o recovery.o checkpoint.o revoke.o journal.o +jbd2-objs := transaction.o commit.o recovery.o checkpoint.o revoke.o journal.o diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c index 0208cc7ac5d0..68039fa9a566 100644 --- a/fs/jbd2/checkpoint.c +++ b/fs/jbd2/checkpoint.c @@ -19,7 +19,7 @@ #include <linux/time.h> #include <linux/fs.h> -#include <linux/jbd.h> +#include <linux/jbd2.h> #include <linux/errno.h> #include <linux/slab.h> @@ -95,9 +95,9 @@ static int __try_to_free_cp_buf(struct journal_head *jh) if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) { JBUFFER_TRACE(jh, "remove from checkpoint list"); - ret = __journal_remove_checkpoint(jh) + 1; + ret = __jbd2_journal_remove_checkpoint(jh) + 1; jbd_unlock_bh_state(bh); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); BUFFER_TRACE(bh, "release"); __brelse(bh); } else { @@ -107,19 +107,19 @@ static int __try_to_free_cp_buf(struct journal_head *jh) } /* - * __log_wait_for_space: wait until there is space in the journal. + * __jbd2_log_wait_for_space: wait until there is space in the journal. * * Called under j-state_lock *only*. It will be unlocked if we have to wait * for a checkpoint to free up some space in the log. */ -void __log_wait_for_space(journal_t *journal) +void __jbd2_log_wait_for_space(journal_t *journal) { int nblocks; assert_spin_locked(&journal->j_state_lock); nblocks = jbd_space_needed(journal); - while (__log_space_left(journal) < nblocks) { - if (journal->j_flags & JFS_ABORT) + while (__jbd2_log_space_left(journal) < nblocks) { + if (journal->j_flags & JBD2_ABORT) return; spin_unlock(&journal->j_state_lock); mutex_lock(&journal->j_checkpoint_mutex); @@ -130,9 +130,9 @@ void __log_wait_for_space(journal_t *journal) */ spin_lock(&journal->j_state_lock); nblocks = jbd_space_needed(journal); - if (__log_space_left(journal) < nblocks) { + if (__jbd2_log_space_left(journal) < nblocks) { spin_unlock(&journal->j_state_lock); - log_do_checkpoint(journal); + jbd2_log_do_checkpoint(journal); spin_lock(&journal->j_state_lock); } mutex_unlock(&journal->j_checkpoint_mutex); @@ -198,9 +198,9 @@ restart: * Now in whatever state the buffer currently is, we know that * it has been written out and so we can drop it from the list */ - released = __journal_remove_checkpoint(jh); + released = __jbd2_journal_remove_checkpoint(jh); jbd_unlock_bh_state(bh); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); __brelse(bh); } } @@ -252,16 +252,16 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); - log_start_commit(journal, tid); - log_wait_commit(journal, tid); + jbd2_log_start_commit(journal, tid); + jbd2_log_wait_commit(journal, tid); ret = 1; } else if (!buffer_dirty(bh)) { J_ASSERT_JH(jh, !buffer_jbddirty(bh)); BUFFER_TRACE(bh, "remove from checkpoint"); - __journal_remove_checkpoint(jh); + __jbd2_journal_remove_checkpoint(jh); spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); __brelse(bh); ret = 1; } else { @@ -296,7 +296,7 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, * * The journal should be locked before calling this function. */ -int log_do_checkpoint(journal_t *journal) +int jbd2_log_do_checkpoint(journal_t *journal) { transaction_t *transaction; tid_t this_tid; @@ -309,7 +309,7 @@ int log_do_checkpoint(journal_t *journal) * don't need checkpointing, just eliminate them from the * journal straight away. */ - result = cleanup_journal_tail(journal); + result = jbd2_cleanup_journal_tail(journal); jbd_debug(1, "cleanup_journal_tail returned %d\n", result); if (result <= 0) return result; @@ -374,7 +374,7 @@ restart: } out: spin_unlock(&journal->j_list_lock); - result = cleanup_journal_tail(journal); + result = jbd2_cleanup_journal_tail(journal); if (result < 0) return result; return 0; @@ -397,7 +397,7 @@ out: * we have an abort error outstanding. */ -int cleanup_journal_tail(journal_t *journal) +int jbd2_cleanup_journal_tail(journal_t *journal) { transaction_t * transaction; tid_t first_tid; @@ -452,8 +452,8 @@ int cleanup_journal_tail(journal_t *journal) journal->j_tail_sequence = first_tid; journal->j_tail = blocknr; spin_unlock(&journal->j_state_lock); - if (!(journal->j_flags & JFS_ABORT)) - journal_update_superblock(journal, 1); + if (!(journal->j_flags & JBD2_ABORT)) + jbd2_journal_update_superblock(journal, 1); return 0; } @@ -518,7 +518,7 @@ static int journal_clean_one_cp_list(struct journal_head *jh, int *released) * Returns number of buffers reaped (for debug) */ -int __journal_clean_checkpoint_list(journal_t *journal) +int __jbd2_journal_clean_checkpoint_list(journal_t *journal) { transaction_t *transaction, *last_transaction, *next_transaction; int ret = 0; @@ -578,7 +578,7 @@ out: * This function is called with jbd_lock_bh_state(jh2bh(jh)) */ -int __journal_remove_checkpoint(struct journal_head *jh) +int __jbd2_journal_remove_checkpoint(struct journal_head *jh) { transaction_t *transaction; journal_t *journal; @@ -607,7 +607,7 @@ int __journal_remove_checkpoint(struct journal_head *jh) * dropped! * * The locking here around j_committing_transaction is a bit sleazy. - * See the comment at the end of journal_commit_transaction(). + * See the comment at the end of jbd2_journal_commit_transaction(). */ if (transaction == journal->j_committing_transaction) { JBUFFER_TRACE(jh, "belongs to committing transaction"); @@ -617,7 +617,7 @@ int __journal_remove_checkpoint(struct journal_head *jh) /* OK, that was the last buffer for the transaction: we can now safely remove this transaction from the log */ - __journal_drop_transaction(journal, transaction); + __jbd2_journal_drop_transaction(journal, transaction); /* Just in case anybody was waiting for more transactions to be checkpointed... */ @@ -636,7 +636,7 @@ out: * Called with the journal locked. * Called with j_list_lock held. */ -void __journal_insert_checkpoint(struct journal_head *jh, +void __jbd2_journal_insert_checkpoint(struct journal_head *jh, transaction_t *transaction) { JBUFFER_TRACE(jh, "entry"); @@ -666,7 +666,7 @@ void __journal_insert_checkpoint(struct journal_head *jh, * Called with j_list_lock held. */ -void __journal_drop_transaction(journal_t *journal, transaction_t *transaction) +void __jbd2_journal_drop_transaction(journal_t *journal, transaction_t *transaction) { assert_spin_locked(&journal->j_list_lock); if (transaction->t_cpnext) { diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 10be51290a27..b1a4eafc1541 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -1,5 +1,5 @@ /* - * linux/fs/jbd/commit.c + * linux/fs/jbd2/commit.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1998 * @@ -15,7 +15,7 @@ #include <linux/time.h> #include <linux/fs.h> -#include <linux/jbd.h> +#include <linux/jbd2.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/mm.h> @@ -111,7 +111,7 @@ static int journal_write_commit_record(journal_t *journal, if (is_journal_aborted(journal)) return 0; - descriptor = journal_get_descriptor_buffer(journal); + descriptor = jbd2_journal_get_descriptor_buffer(journal); if (!descriptor) return 1; @@ -120,14 +120,14 @@ static int journal_write_commit_record(journal_t *journal, /* AKPM: buglet - add `i' to tmp! */ for (i = 0; i < bh->b_size; i += 512) { journal_header_t *tmp = (journal_header_t*)bh->b_data; - tmp->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); - tmp->h_blocktype = cpu_to_be32(JFS_COMMIT_BLOCK); + tmp->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER); + tmp->h_blocktype = cpu_to_be32(JBD2_COMMIT_BLOCK); tmp->h_sequence = cpu_to_be32(commit_transaction->t_tid); } JBUFFER_TRACE(descriptor, "write commit block"); set_buffer_dirty(bh); - if (journal->j_flags & JFS_BARRIER) { + if (journal->j_flags & JBD2_BARRIER) { set_buffer_ordered(bh); barrier_done = 1; } @@ -145,7 +145,7 @@ static int journal_write_commit_record(journal_t *journal, "disabling barriers\n", bdevname(journal->j_dev, b)); spin_lock(&journal->j_state_lock); - journal->j_flags &= ~JFS_BARRIER; + journal->j_flags &= ~JBD2_BARRIER; spin_unlock(&journal->j_state_lock); /* And try again, without the barrier */ @@ -155,7 +155,7 @@ static int journal_write_commit_record(journal_t *journal, ret = sync_dirty_buffer(bh); } put_bh(bh); /* One for getblk() */ - journal_put_journal_head(descriptor); + jbd2_journal_put_journal_head(descriptor); return (ret == -EIO); } @@ -239,7 +239,7 @@ write_out_data: if (locked && test_clear_buffer_dirty(bh)) { BUFFER_TRACE(bh, "needs writeout, adding to array"); wbuf[bufs++] = bh; - __journal_file_buffer(jh, commit_transaction, + __jbd2_journal_file_buffer(jh, commit_transaction, BJ_Locked); jbd_unlock_bh_state(bh); if (bufs == journal->j_wbufsize) { @@ -251,13 +251,13 @@ write_out_data: } else { BUFFER_TRACE(bh, "writeout complete: unfile"); - __journal_unfile_buffer(jh); + __jbd2_journal_unfile_buffer(jh); jbd_unlock_bh_state(bh); if (locked) unlock_buffer(bh); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); /* Once for our safety reference, once for - * journal_remove_journal_head() */ + * jbd2_journal_remove_journal_head() */ put_bh(bh); put_bh(bh); } @@ -272,12 +272,12 @@ write_out_data: } /* - * journal_commit_transaction + * jbd2_journal_commit_transaction * * The primary function for committing a transaction to the log. This * function is called by the journal thread to begin a complete commit. */ -void journal_commit_transaction(journal_t *journal) +void jbd2_journal_commit_transaction(journal_t *journal) { transaction_t *commit_transaction; struct journal_head *jh, *new_jh, *descriptor; @@ -305,10 +305,10 @@ void journal_commit_transaction(journal_t *journal) spin_unlock(&journal->j_list_lock); #endif - /* Do we need to erase the effects of a prior journal_flush? */ - if (journal->j_flags & JFS_FLUSHED) { + /* Do we need to erase the effects of a prior jbd2_journal_flush? */ + if (journal->j_flags & JBD2_FLUSHED) { jbd_debug(3, "super block updated\n"); - journal_update_superblock(journal, 1); + jbd2_journal_update_superblock(journal, 1); } else { jbd_debug(3, "superblock not updated\n"); } @@ -350,7 +350,7 @@ void journal_commit_transaction(journal_t *journal) * BJ_Reserved buffers. Note, it is _not_ permissible to assume * that there are no such buffers: if a large filesystem * operation like a truncate needs to split itself over multiple - * transactions, then it may try to do a journal_restart() while + * transactions, then it may try to do a jbd2_journal_restart() while * there are still BJ_Reserved buffers outstanding. These must * be released cleanly from the current transaction. * @@ -358,25 +358,25 @@ void journal_commit_transaction(journal_t *journal) * again before modifying the buffer in the new transaction, but * we do not require it to remember exactly which old buffers it * has reserved. This is consistent with the existing behaviour - * that multiple journal_get_write_access() calls to the same + * that multiple jbd2_journal_get_write_access() calls to the same * buffer are perfectly permissable. */ while (commit_transaction->t_reserved_list) { jh = commit_transaction->t_reserved_list; JBUFFER_TRACE(jh, "reserved, unused: refile"); /* - * A journal_get_undo_access()+journal_release_buffer() may + * A jbd2_journal_get_undo_access()+jbd2_journal_release_buffer() may * leave undo-committed data. */ if (jh->b_committed_data) { struct buffer_head *bh = jh2bh(jh); jbd_lock_bh_state(bh); - jbd_slab_free(jh->b_committed_data, bh->b_size); + jbd2_slab_free(jh->b_committed_data, bh->b_size); jh->b_committed_data = NULL; jbd_unlock_bh_state(bh); } - journal_refile_buffer(journal, jh); + jbd2_journal_refile_buffer(journal, jh); } /* @@ -385,7 +385,7 @@ void journal_commit_transaction(journal_t *journal) * frees some memory */ spin_lock(&journal->j_list_lock); - __journal_clean_checkpoint_list(journal); + __jbd2_journal_clean_checkpoint_list(journal); spin_unlock(&journal->j_list_lock); jbd_debug (3, "JBD: commit phase 1\n"); @@ -393,7 +393,7 @@ void journal_commit_transaction(journal_t *journal) /* * Switch to a new revoke table. */ - journal_switch_revoke_table(journal); + jbd2_journal_switch_revoke_table(journal); commit_transaction->t_state = T_FLUSH; journal->j_committing_transaction = commit_transaction; @@ -450,9 +450,9 @@ void journal_commit_transaction(journal_t *journal) continue; } if (buffer_jbd(bh) && jh->b_jlist == BJ_Locked) { - __journal_unfile_buffer(jh); + __jbd2_journal_unfile_buffer(jh); jbd_unlock_bh_state(bh); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); put_bh(bh); } else { jbd_unlock_bh_state(bh); @@ -463,9 +463,9 @@ void journal_commit_transaction(journal_t *journal) spin_unlock(&journal->j_list_lock); if (err) - __journal_abort_hard(journal); + __jbd2_journal_abort_hard(journal); - journal_write_revoke_records(journal, commit_transaction); + jbd2_journal_write_revoke_records(journal, commit_transaction); jbd_debug(3, "JBD: commit phase 2\n"); @@ -499,7 +499,7 @@ void journal_commit_transaction(journal_t *journal) if (is_journal_aborted(journal)) { JBUFFER_TRACE(jh, "journal is aborting: refile"); - journal_refile_buffer(journal, jh); + jbd2_journal_refile_buffer(journal, jh); /* If that was the last one, we need to clean up * any descriptor buffers which may have been * already allocated, even if we are now @@ -519,9 +519,9 @@ void journal_commit_transaction(journal_t *journal) jbd_debug(4, "JBD: get descriptor\n"); - descriptor = journal_get_descriptor_buffer(journal); + descriptor = jbd2_journal_get_descriptor_buffer(journal); if (!descriptor) { - __journal_abort_hard(journal); + __jbd2_journal_abort_hard(journal); continue; } @@ -529,8 +529,8 @@ void journal_commit_transaction(journal_t *journal) jbd_debug(4, "JBD: got buffer %llu (%p)\n", (unsigned long long)bh->b_blocknr, bh->b_data); header = (journal_header_t *)&bh->b_data[0]; - header->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); - header->h_blocktype = cpu_to_be32(JFS_DESCRIPTOR_BLOCK); + header->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER); + header->h_blocktype = cpu_to_be32(JBD2_DESCRIPTOR_BLOCK); header->h_sequence = cpu_to_be32(commit_transaction->t_tid); tagp = &bh->b_data[sizeof(journal_header_t)]; @@ -543,25 +543,25 @@ void journal_commit_transaction(journal_t *journal) /* Record it so that we can wait for IO completion later */ BUFFER_TRACE(bh, "ph3: file as descriptor"); - journal_file_buffer(descriptor, commit_transaction, + jbd2_journal_file_buffer(descriptor, commit_transaction, BJ_LogCtl); } /* Where is the buffer to be written? */ - err = journal_next_log_block(journal, &blocknr); + err = jbd2_journal_next_log_block(journal, &blocknr); /* If the block mapping failed, just abandon the buffer and repeat this loop: we'll fall into the refile-on-abort condition above. */ if (err) { - __journal_abort_hard(journal); + __jbd2_journal_abort_hard(journal); continue; } /* * start_this_handle() uses t_outstanding_credits to determine * the free space in the log, but this counter is changed - * by journal_next_log_block() also. + * by jbd2_journal_next_log_block() also. */ commit_transaction->t_outstanding_credits--; @@ -576,13 +576,13 @@ void journal_commit_transaction(journal_t *journal) set_bit(BH_JWrite, &jh2bh(jh)->b_state); /* - * akpm: journal_write_metadata_buffer() sets + * akpm: jbd2_journal_write_metadata_buffer() sets * new_bh->b_transaction to commit_transaction. * We need to clean this up before we release new_bh * (which is of type BJ_IO) */ JBUFFER_TRACE(jh, "ph3: write metadata"); - flags = journal_write_metadata_buffer(commit_transaction, + flags = jbd2_journal_write_metadata_buffer(commit_transaction, jh, &new_jh, blocknr); set_bit(BH_JWrite, &jh2bh(new_jh)->b_state); wbuf[bufs++] = jh2bh(new_jh); @@ -592,9 +592,9 @@ void journal_commit_transaction(journal_t *journal) tag_flag = 0; if (flags & 1) - tag_flag |= JFS_FLAG_ESCAPE; + tag_flag |= JBD2_FLAG_ESCAPE; if (!first_tag) - tag_flag |= JFS_FLAG_SAME_UUID; + tag_flag |= JBD2_FLAG_SAME_UUID; tag = (journal_block_tag_t *) tagp; tag->t_blocknr = cpu_to_be32(jh2bh(jh)->b_blocknr); @@ -622,7 +622,7 @@ void journal_commit_transaction(journal_t *journal) submitting the IOs. "tag" still points to the last tag we set up. */ - tag->t_flags |= cpu_to_be32(JFS_FLAG_LAST_TAG); + tag->t_flags |= cpu_to_be32(JBD2_FLAG_LAST_TAG); start_journal_io: for (i = 0; i < bufs; i++) { @@ -678,14 +678,14 @@ wait_for_iobuf: clear_buffer_jwrite(bh); JBUFFER_TRACE(jh, "ph4: unfile after journal write"); - journal_unfile_buffer(journal, jh); + jbd2_journal_unfile_buffer(journal, jh); /* * ->t_iobuf_list should contain only dummy buffer_heads - * which were created by journal_write_metadata_buffer(). + * which were created by jbd2_journal_write_metadata_buffer(). */ BUFFER_TRACE(bh, "dumping temporary bh"); - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); __brelse(bh); J_ASSERT_BH(bh, atomic_read(&bh->b_count) == 0); free_buffer_head(bh); @@ -702,7 +702,7 @@ wait_for_iobuf: we finally commit, we can do any checkpointing required. */ JBUFFER_TRACE(jh, "file as BJ_Forget"); - journal_file_buffer(jh, commit_transaction, BJ_Forget); + jbd2_journal_file_buffer(jh, commit_transaction, BJ_Forget); /* Wake up any transactions which were waiting for this IO to complete */ wake_up_bit(&bh->b_state, BH_Unshadow); @@ -733,8 +733,8 @@ wait_for_iobuf: BUFFER_TRACE(bh, "ph5: control buffer writeout done: unfile"); clear_buffer_jwrite(bh); - journal_unfile_buffer(journal, jh); - journal_put_journal_head(jh); + jbd2_journal_unfile_buffer(journal, jh); + jbd2_journal_put_journal_head(jh); __brelse(bh); /* One for getblk */ /* AKPM: bforget here */ } @@ -745,7 +745,7 @@ wait_for_iobuf: err = -EIO; if (err) - __journal_abort_hard(journal); + __jbd2_journal_abort_hard(journal); /* End of a transaction! Finally, we can do checkpoint processing: any buffers committed as a result of this @@ -789,14 +789,14 @@ restart_loop: * Otherwise, we can just throw away the frozen data now. */ if (jh->b_committed_data) { - jbd_slab_free(jh->b_committed_data, bh->b_size); + jbd2_slab_free(jh->b_committed_data, bh->b_size); jh->b_committed_data = NULL; if (jh->b_frozen_data) { jh->b_committed_data = jh->b_frozen_data; jh->b_frozen_data = NULL; } } else if (jh->b_frozen_data) { - jbd_slab_free(jh->b_frozen_data, bh->b_size); + jbd2_slab_free(jh->b_frozen_data, bh->b_size); jh->b_frozen_data = NULL; } @@ -804,12 +804,12 @@ restart_loop: cp_transaction = jh->b_cp_transaction; if (cp_transaction) { JBUFFER_TRACE(jh, "remove from old cp transaction"); - __journal_remove_checkpoint(jh); + __jbd2_journal_remove_checkpoint(jh); } /* Only re-checkpoint the buffer_head if it is marked * dirty. If the buffer was added to the BJ_Forget list - * by journal_forget, it may no longer be dirty and + * by jbd2_journal_forget, it may no longer be dirty and * there's no point in keeping a checkpoint record for * it. */ @@ -828,9 +828,9 @@ restart_loop: if (buffer_jbddirty(bh)) { JBUFFER_TRACE(jh, "add to new checkpointing trans"); - __journal_insert_checkpoint(jh, commit_transaction); + __jbd2_journal_insert_checkpoint(jh, commit_transaction); JBUFFER_TRACE(jh, "refile for checkpoint writeback"); - __journal_refile_buffer(jh); + __jbd2_journal_refile_buffer(jh); jbd_unlock_bh_state(bh); } else { J_ASSERT_BH(bh, !buffer_dirty(bh)); @@ -842,11 +842,11 @@ restart_loop: * disk and before we process the buffer on BJ_Forget * list. */ JBUFFER_TRACE(jh, "refile or unfile freed buffer"); - __journal_refile_buffer(jh); + __jbd2_journal_refile_buffer(jh); if (!jh->b_transaction) { jbd_unlock_bh_state(bh); /* needs a brelse */ - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); release_buffer_page(bh); } else jbd_unlock_bh_state(bh); @@ -856,9 +856,9 @@ restart_loop: spin_unlock(&journal->j_list_lock); /* * This is a bit sleazy. We borrow j_list_lock to protect - * journal->j_committing_transaction in __journal_remove_checkpoint. - * Really, __journal_remove_checkpoint should be using j_state_lock but - * it's a bit hassle to hold that across __journal_remove_checkpoint + * journal->j_committing_transaction in __jbd2_journal_remove_checkpoint. + * Really, __jbd2_journal_remove_checkpoint should be using j_state_lock but + * it's a bit hassle to hold that across __jbd2_journal_remove_checkpoint */ spin_lock(&journal->j_state_lock); spin_lock(&journal->j_list_lock); @@ -885,7 +885,7 @@ restart_loop: spin_unlock(&journal->j_state_lock); if (commit_transaction->t_checkpoint_list == NULL) { - __journal_drop_transaction(journal, commit_transaction); + __jbd2_journal_drop_transaction(journal, commit_transaction); } else { if (journal->j_checkpoint_transactions == NULL) { journal->j_checkpoint_transactions = commit_transaction; diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index c518dd8fe60a..3fbbba20a516 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1,5 +1,5 @@ /* - * linux/fs/jbd/journal.c + * linux/fs/jbd2/journal.c * * Written by Stephen C. Tweedie <sct@redhat.com>, 1998 * @@ -25,7 +25,7 @@ #include <linux/module.h> #include <linux/time.h> #include <linux/fs.h> -#include <linux/jbd.h> +#include <linux/jbd2.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/smp_lock.h> @@ -40,51 +40,51 @@ #include <asm/uaccess.h> #include <asm/page.h> -EXPORT_SYMBOL(journal_start); -EXPORT_SYMBOL(journal_restart); -EXPORT_SYMBOL(journal_extend); -EXPORT_SYMBOL(journal_stop); -EXPORT_SYMBOL(journal_lock_updates); -EXPORT_SYMBOL(journal_unlock_updates); -EXPORT_SYMBOL(journal_get_write_access); -EXPORT_SYMBOL(journal_get_create_access); -EXPORT_SYMBOL(journal_get_undo_access); -EXPORT_SYMBOL(journal_dirty_data); -EXPORT_SYMBOL(journal_dirty_metadata); -EXPORT_SYMBOL(journal_release_buffer); -EXPORT_SYMBOL(journal_forget); +EXPORT_SYMBOL(jbd2_journal_start); +EXPORT_SYMBOL(jbd2_journal_restart); +EXPORT_SYMBOL(jbd2_journal_extend); +EXPORT_SYMBOL(jbd2_journal_stop); +EXPORT_SYMBOL(jbd2_journal_lock_updates); +EXPORT_SYMBOL(jbd2_journal_unlock_updates); +EXPORT_SYMBOL(jbd2_journal_get_write_access); +EXPORT_SYMBOL(jbd2_journal_get_create_access); +EXPORT_SYMBOL(jbd2_journal_get_undo_access); +EXPORT_SYMBOL(jbd2_journal_dirty_data); +EXPORT_SYMBOL(jbd2_journal_dirty_metadata); +EXPORT_SYMBOL(jbd2_journal_release_buffer); +EXPORT_SYMBOL(jbd2_journal_forget); #if 0 EXPORT_SYMBOL(journal_sync_buffer); #endif -EXPORT_SYMBOL(journal_flush); -EXPORT_SYMBOL(journal_revoke); - -EXPORT_SYMBOL(journal_init_dev); -EXPORT_SYMBOL(journal_init_inode); -EXPORT_SYMBOL(journal_update_format); -EXPORT_SYMBOL(journal_check_used_features); -EXPORT_SYMBOL(journal_check_available_features); -EXPORT_SYMBOL(journal_set_features); -EXPORT_SYMBOL(journal_create); -EXPORT_SYMBOL(journal_load); -EXPORT_SYMBOL(journal_destroy); -EXPORT_SYMBOL(journal_update_superblock); -EXPORT_SYMBOL(journal_abort); -EXPORT_SYMBOL(journal_errno); -EXPORT_SYMBOL(journal_ack_err); -EXPORT_SYMBOL(journal_clear_err); -EXPORT_SYMBOL(log_wait_commit); -EXPORT_SYMBOL(journal_start_commit); -EXPORT_SYMBOL(journal_force_commit_nested); -EXPORT_SYMBOL(journal_wipe); -EXPORT_SYMBOL(journal_blocks_per_page); -EXPORT_SYMBOL(journal_invalidatepage); -EXPORT_SYMBOL(journal_try_to_free_buffers); -EXPORT_SYMBOL(journal_force_commit); +EXPORT_SYMBOL(jbd2_journal_flush); +EXPORT_SYMBOL(jbd2_journal_revoke); + +EXPORT_SYMBOL(jbd2_journal_init_dev); +EXPORT_SYMBOL(jbd2_journal_init_inode); +EXPORT_SYMBOL(jbd2_journal_update_format); +EXPORT_SYMBOL(jbd2_journal_check_used_features); +EXPORT_SYMBOL(jbd2_journal_check_available_features); +EXPORT_SYMBOL(jbd2_journal_set_features); +EXPORT_SYMBOL(jbd2_journal_create); +EXPORT_SYMBOL(jbd2_journal_load); +EXPORT_SYMBOL(jbd2_journal_destroy); +EXPORT_SYMBOL(jbd2_journal_update_superblock); +EXPORT_SYMBOL(jbd2_journal_abort); +EXPORT_SYMBOL(jbd2_journal_errno); +EXPORT_SYMBOL(jbd2_journal_ack_err); +EXPORT_SYMBOL(jbd2_journal_clear_err); +EXPORT_SYMBOL(jbd2_log_wait_commit); +EXPORT_SYMBOL(jbd2_journal_start_commit); +EXPORT_SYMBOL(jbd2_journal_force_commit_nested); +EXPORT_SYMBOL(jbd2_journal_wipe); +EXPORT_SYMBOL(jbd2_journal_blocks_per_page); +EXPORT_SYMBOL(jbd2_journal_invalidatepage); +EXPORT_SYMBOL(jbd2_journal_try_to_free_buffers); +EXPORT_SYMBOL(jbd2_journal_force_commit); static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *); static void __journal_abort_soft (journal_t *journal, int errno); -static int journal_create_jbd_slab(size_t slab_size); +static int jbd2_journal_create_jbd_slab(size_t slab_size); /* * Helper function used to manage commit timeouts @@ -98,7 +98,7 @@ static void commit_timeout(unsigned long __data) } /* - * kjournald: The main thread function used to manage a logging device + * kjournald2: The main thread function used to manage a logging device * journal. * * This kernel thread is responsible for two things: @@ -113,7 +113,7 @@ static void commit_timeout(unsigned long __data) * known as checkpointing, and this thread is responsible for that job. */ -static int kjournald(void *arg) +static int kjournald2(void *arg) { journal_t *journal = arg; transaction_t *transaction; @@ -129,7 +129,7 @@ static int kjournald(void *arg) journal->j_task = current; wake_up(&journal->j_wait_done_commit); - printk(KERN_INFO "kjournald starting. Commit interval %ld seconds\n", + printk(KERN_INFO "kjournald2 starting. Commit interval %ld seconds\n", journal->j_commit_interval / HZ); /* @@ -138,7 +138,7 @@ static int kjournald(void *arg) spin_lock(&journal->j_state_lock); loop: - if (journal->j_flags & JFS_UNMOUNT) + if (journal->j_flags & JBD2_UNMOUNT) goto end_loop; jbd_debug(1, "commit_sequence=%d, commit_request=%d\n", @@ -148,7 +148,7 @@ loop: jbd_debug(1, "OK, requests differ\n"); spin_unlock(&journal->j_state_lock); del_timer_sync(&journal->j_commit_timer); - journal_commit_transaction(journal); + jbd2_journal_commit_transaction(journal); spin_lock(&journal->j_state_lock); goto loop; } @@ -160,7 +160,7 @@ loop: * good idea, because that depends on threads that may * be already stopped. */ - jbd_debug(1, "Now suspending kjournald\n"); + jbd_debug(1, "Now suspending kjournald2\n"); spin_unlock(&journal->j_state_lock); refrigerator(); spin_lock(&journal->j_state_lock); @@ -180,7 +180,7 @@ loop: if (transaction && time_after_eq(jiffies, transaction->t_expires)) should_sleep = 0; - if (journal->j_flags & JFS_UNMOUNT) + if (journal->j_flags & JBD2_UNMOUNT) should_sleep = 0; if (should_sleep) { spin_unlock(&journal->j_state_lock); @@ -190,7 +190,7 @@ loop: finish_wait(&journal->j_wait_commit, &wait); } - jbd_debug(1, "kjournald wakes\n"); + jbd_debug(1, "kjournald2 wakes\n"); /* * Were we woken up by a commit wakeup event? @@ -211,16 +211,16 @@ end_loop: return 0; } -static void journal_start_thread(journal_t *journal) +static void jbd2_journal_start_thread(journal_t *journal) { - kthread_run(kjournald, journal, "kjournald"); + kthread_run(kjournald2, journal, "kjournald2"); wait_event(journal->j_wait_done_commit, journal->j_task != 0); } static void journal_kill_thread(journal_t *journal) { spin_lock(&journal->j_state_lock); - journal->j_flags |= JFS_UNMOUNT; + journal->j_flags |= JBD2_UNMOUNT; while (journal->j_task) { wake_up(&journal->j_wait_commit); @@ -232,7 +232,7 @@ static void journal_kill_thread(journal_t *journal) } /* - * journal_write_metadata_buffer: write a metadata buffer to the journal. + * jbd2_journal_write_metadata_buffer: write a metadata buffer to the journal. * * Writes a metadata buffer to a given disk block. The actual IO is not * performed but a new buffer_head is constructed which labels the data @@ -240,7 +240,7 @@ static void journal_kill_thread(journal_t *journal) * * Any magic-number escaping which needs to be done will cause a * copy-out here. If the buffer happens to start with the - * JFS_MAGIC_NUMBER, then we can't write it to the log directly: the + * JBD2_MAGIC_NUMBER, then we can't write it to the log directly: the * magic number is only written to the log for descripter blocks. In * this case, we copy the data and replace the first word with 0, and we * return a result code which indicates that this buffer needs to be @@ -268,7 +268,7 @@ static void journal_kill_thread(journal_t *journal) * Bit 1 set == buffer copy-out performed (kfree the data after IO) */ -int journal_write_metadata_buffer(transaction_t *transaction, +int jbd2_journal_write_metadata_buffer(transaction_t *transaction, struct journal_head *jh_in, struct journal_head **jh_out, unsigned long blocknr) @@ -316,7 +316,7 @@ repeat: * Check for escaping */ if (*((__be32 *)(mapped_data + new_offset)) == - cpu_to_be32(JFS_MAGIC_NUMBER)) { + cpu_to_be32(JBD2_MAGIC_NUMBER)) { need_copy_out = 1; do_escape = 1; } @@ -329,10 +329,10 @@ repeat: char *tmp; jbd_unlock_bh_state(bh_in); - tmp = jbd_slab_alloc(bh_in->b_size, GFP_NOFS); + tmp = jbd2_slab_alloc(bh_in->b_size, GFP_NOFS); jbd_lock_bh_state(bh_in); if (jh_in->b_frozen_data) { - jbd_slab_free(tmp, bh_in->b_size); + jbd2_slab_free(tmp, bh_in->b_size); goto repeat; } @@ -362,7 +362,7 @@ repeat: atomic_set(&new_bh->b_count, 1); jbd_unlock_bh_state(bh_in); - new_jh = journal_add_journal_head(new_bh); /* This sleeps */ + new_jh = jbd2_journal_add_journal_head(new_bh); /* This sleeps */ set_bh_page(new_bh, new_page, new_offset); new_jh->b_transaction = NULL; @@ -380,9 +380,9 @@ repeat: * copying is moved to the transaction's shadow queue. */ JBUFFER_TRACE(jh_in, "file as BJ_Shadow"); - journal_file_buffer(jh_in, transaction, BJ_Shadow); + jbd2_journal_file_buffer(jh_in, transaction, BJ_Shadow); JBUFFER_TRACE(new_jh, "file as BJ_IO"); - journal_file_buffer(new_jh, transaction, BJ_IO); + jbd2_journal_file_buffer(new_jh, transaction, BJ_IO); return do_escape | (done_copy_out << 1); } @@ -393,14 +393,14 @@ repeat: */ /* - * __log_space_left: Return the number of free blocks left in the journal. + * __jbd2_log_space_left: Return the number of free blocks left in the journal. * * Called with the journal already locked. * * Called under j_state_lock */ -int __log_space_left(journal_t *journal) +int __jbd2_log_space_left(journal_t *journal) { int left = journal->j_free; @@ -424,7 +424,7 @@ int __log_space_left(journal_t *journal) /* * Called under j_state_lock. Returns true if a transaction was started. */ -int __log_start_commit(journal_t *journal, tid_t target) +int __jbd2_log_start_commit(journal_t *journal, tid_t target) { /* * Are we already doing a recent enough commit? @@ -445,12 +445,12 @@ int __log_start_commit(journal_t *journal, tid_t target) return 0; } -int log_start_commit(journal_t *journal, tid_t tid) +int jbd2_log_start_commit(journal_t *journal, tid_t tid) { int ret; spin_lock(&journal->j_state_lock); - ret = __log_start_commit(journal, tid); + ret = __jbd2_log_start_commit(journal, tid); spin_unlock(&journal->j_state_lock); return ret; } @@ -465,7 +465,7 @@ int log_start_commit(journal_t *journal, tid_t tid) * * Returns true if a transaction was started. */ -int journal_force_commit_nested(journal_t *journal) +int jbd2_journal_force_commit_nested(journal_t *journal) { transaction_t *transaction = NULL; tid_t tid; @@ -473,7 +473,7 @@ int journal_force_commit_nested(journal_t *journal) spin_lock(&journal->j_state_lock); if (journal->j_running_transaction && !current->journal_info) { transaction = journal->j_running_transaction; - __log_start_commit(journal, transaction->t_tid); + __jbd2_log_start_commit(journal, transaction->t_tid); } else if (journal->j_committing_transaction) transaction = journal->j_committing_transaction; @@ -484,7 +484,7 @@ int journal_force_commit_nested(journal_t *journal) tid = transaction->t_tid; spin_unlock(&journal->j_state_lock); - log_wait_commit(journal, tid); + jbd2_log_wait_commit(journal, tid); return 1; } @@ -492,7 +492,7 @@ int journal_force_commit_nested(journal_t *journal) * Start a commit of the current running transaction (if any). Returns true * if a transaction was started, and fills its tid in at *ptid */ -int journal_start_commit(journal_t *journal, tid_t *ptid) +int jbd2_journal_start_commit(journal_t *journal, tid_t *ptid) { int ret = 0; @@ -500,7 +500,7 @@ int journal_start_commit(journal_t *journal, tid_t *ptid) if (journal->j_running_transaction) { tid_t tid = journal->j_running_transaction->t_tid; - ret = __log_start_commit(journal, tid); + ret = __jbd2_log_start_commit(journal, tid); if (ret && ptid) *ptid = tid; } else if (journal->j_committing_transaction && ptid) { @@ -519,7 +519,7 @@ int journal_start_commit(journal_t *journal, tid_t *ptid) * Wait for a specified commit to complete. * The caller may not hold the journal lock. */ -int log_wait_commit(journal_t *journal, tid_t tid) +int jbd2_log_wait_commit(journal_t *journal, tid_t tid) { int err = 0; @@ -555,7 +555,7 @@ int log_wait_commit(journal_t *journal, tid_t tid) * Log buffer allocation routines: */ -int journal_next_log_block(journal_t *journal, unsigned long *retp) +int jbd2_journal_next_log_block(journal_t *journal, unsigned long *retp) { unsigned long blocknr; @@ -568,7 +568,7 @@ int journal_next_log_block(journal_t *journal, unsigned long *retp) if (journal->j_head == journal->j_last) journal->j_head = journal->j_first; spin_unlock(&journal->j_state_lock); - return journal_bmap(journal, blocknr, retp); + return jbd2_journal_bmap(journal, blocknr, retp); } /* @@ -578,7 +578,7 @@ int journal_next_log_block(journal_t *journal, unsigned long *retp) * this is a no-op. If needed, we can use j_blk_offset - everything is * ready. */ -int journal_bmap(journal_t *journal, unsigned long blocknr, +int jbd2_journal_bmap(journal_t *journal, unsigned long blocknr, unsigned long *retp) { int err = 0; @@ -610,18 +610,18 @@ int journal_bmap(journal_t *journal, unsigned long blocknr, * the journal without copying their contents, but for journal * descriptor blocks we do need to generate bona fide buffers. * - * After the caller of journal_get_descriptor_buffer() has finished modifying + * After the caller of jbd2_journal_get_descriptor_buffer() has finished modifying * the buffer's contents they really should run flush_dcache_page(bh->b_page). * But we don't bother doing that, so there will be coherency problems with * mmaps of blockdevs which hold live JBD-controlled filesystems. */ -struct journal_head *journal_get_descriptor_buffer(journal_t *journal) +struct journal_head *jbd2_journal_get_descriptor_buffer(journal_t *journal) { struct buffer_head *bh; unsigned long blocknr; int err; - err = journal_next_log_block(journal, &blocknr); + err = jbd2_journal_next_log_block(journal, &blocknr); if (err) return NULL; @@ -632,7 +632,7 @@ struct journal_head *journal_get_descriptor_buffer(journal_t *journal) set_buffer_uptodate(bh); unlock_buffer(bh); BUFFER_TRACE(bh, "return this buffer"); - return journal_add_journal_head(bh); + return jbd2_journal_add_journal_head(bh); } /* @@ -669,10 +669,10 @@ static journal_t * journal_init_common (void) journal->j_commit_interval = (HZ * JBD_DEFAULT_MAX_COMMIT_AGE); /* The journal is marked for error until we succeed with recovery! */ - journal->j_flags = JFS_ABORT; + journal->j_flags = JBD2_ABORT; /* Set up a default-sized revoke table for the new mount. */ - err = journal_init_revoke(journal, JOURNAL_REVOKE_DEFAULT_HASH); + err = jbd2_journal_init_revoke(journal, JOURNAL_REVOKE_DEFAULT_HASH); if (err) { kfree(journal); goto fail; @@ -682,7 +682,7 @@ fail: return NULL; } -/* journal_init_dev and journal_init_inode: +/* jbd2_journal_init_dev and jbd2_journal_init_inode: * * Create a journal structure assigned some fixed set of disk blocks to * the journal. We don't actually touch those disk blocks yet, but we @@ -692,7 +692,7 @@ fail: */ /** - * journal_t * journal_init_dev() - creates an initialises a journal structure + * journal_t * jbd2_journal_init_dev() - creates an initialises a journal structure * @bdev: Block device on which to create the journal * @fs_dev: Device which hold journalled filesystem for this journal. * @start: Block nr Start of journal. @@ -700,11 +700,11 @@ fail: * @blocksize: blocksize of journalling device * @returns: a newly created journal_t * * - * journal_init_dev creates a journal which maps a fixed contiguous + * jbd2_journal_init_dev creates a journal which maps a fixed contiguous * range of blocks on an arbitrary block device. * */ -journal_t * journal_init_dev(struct block_device *bdev, +journal_t * jbd2_journal_init_dev(struct block_device *bdev, struct block_device *fs_dev, int start, int len, int blocksize) { @@ -740,14 +740,14 @@ journal_t * journal_init_dev(struct block_device *bdev, } /** - * journal_t * journal_init_inode () - creates a journal which maps to a inode. + * journal_t * jbd2_journal_init_inode () - creates a journal which maps to a inode. * @inode: An inode to create the journal in * - * journal_init_inode creates a journal which maps an on-disk inode as + * jbd2_journal_init_inode creates a journal which maps an on-disk inode as * the journal. The inode must exist already, must support bmap() and * must have all data blocks preallocated. */ -journal_t * journal_init_inode (struct inode *inode) +journal_t * jbd2_journal_init_inode (struct inode *inode) { struct buffer_head *bh; journal_t *journal = journal_init_common(); @@ -780,7 +780,7 @@ journal_t * journal_init_inode (struct inode *inode) return NULL; } - err = journal_bmap(journal, 0, &blocknr); + err = jbd2_journal_bmap(journal, 0, &blocknr); /* If that failed, give up */ if (err) { printk(KERN_ERR "%s: Cannnot locate journal superblock\n", @@ -838,27 +838,27 @@ static int journal_reset(journal_t *journal) journal->j_max_transaction_buffers = journal->j_maxlen / 4; /* Add the dynamic fields and write it to disk. */ - journal_update_superblock(journal, 1); - journal_start_thread(journal); + jbd2_journal_update_superblock(journal, 1); + jbd2_journal_start_thread(journal); return 0; } /** - * int journal_create() - Initialise the new journal file + * int jbd2_journal_create() - Initialise the new journal file * @journal: Journal to create. This structure must have been initialised * * Given a journal_t structure which tells us which disk blocks we can * use, create a new journal superblock and initialise all of the * journal fields from scratch. **/ -int journal_create(journal_t *journal) +int jbd2_journal_create(journal_t *journal) { unsigned long blocknr; struct buffer_head *bh; journal_superblock_t *sb; int i, err; - if (journal->j_maxlen < JFS_MIN_JOURNAL_BLOCKS) { + if (journal->j_maxlen < JBD2_MIN_JOURNAL_BLOCKS) { printk (KERN_ERR "Journal length (%d blocks) too short.\n", journal->j_maxlen); journal_fail_superblock(journal); @@ -876,10 +876,10 @@ int journal_create(journal_t *journal) } /* Zero out the entire journal on disk. We cannot afford to - have any blocks on disk beginning with JFS_MAGIC_NUMBER. */ + have any blocks on disk beginning with JBD2_MAGIC_NUMBER. */ jbd_debug(1, "JBD: Zeroing out journal blocks...\n"); for (i = 0; i < journal->j_maxlen; i++) { - err = journal_bmap(journal, i, &blocknr); + err = jbd2_journal_bmap(journal, i, &blocknr); if (err) return err; bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize); @@ -899,8 +899,8 @@ int journal_create(journal_t *journal) /* OK, fill in the initial static fields in the new superblock */ sb = journal->j_superblock; - sb->s_header.h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); - sb->s_header.h_blocktype = cpu_to_be32(JFS_SUPERBLOCK_V2); + sb->s_header.h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER); + sb->s_header.h_blocktype = cpu_to_be32(JBD2_SUPERBLOCK_V2); sb->s_blocksize = cpu_to_be32(journal->j_blocksize); sb->s_maxlen = cpu_to_be32(journal->j_maxlen); @@ -908,21 +908,21 @@ int journal_create(journal_t *journal) journal->j_transaction_sequence = 1; - journal->j_flags &= ~JFS_ABORT; + journal->j_flags &= ~JBD2_ABORT; journal->j_format_version = 2; return journal_reset(journal); } /** - * void journal_update_superblock() - Update journal sb on disk. + * void jbd2_journal_update_superblock() - Update journal sb on disk. * @journal: The journal to update. * @wait: Set to '0' if you don't want to wait for IO completion. * * Update a journal's dynamic superblock fields and write it to disk, * optionally waiting for the IO to complete. */ -void journal_update_superblock(journal_t *journal, int wait) +void jbd2_journal_update_superblock(journal_t *journal, int wait) { journal_superblock_t *sb = journal->j_superblock; struct buffer_head *bh = journal->j_sb_buffer; @@ -931,7 +931,7 @@ void journal_update_superblock(journal_t *journal, int wait) * As a special case, if the on-disk copy is already marked as needing * no recovery (s_start == 0) and there are no outstanding transactions * in the filesystem, then we can safely defer the superblock update - * until the next commit by setting JFS_FLUSHED. This avoids + * until the next commit by setting JBD2_FLUSHED. This avoids * attempting a write to a potential-readonly device. */ if (sb->s_start == 0 && journal->j_tail_sequence == @@ -966,9 +966,9 @@ out: spin_lock(&journal->j_state_lock); if (sb->s_start) - journal->j_flags &= ~JFS_FLUSHED; + journal->j_flags &= ~JBD2_FLUSHED; else - journal->j_flags |= JFS_FLUSHED; + journal->j_flags |= JBD2_FLUSHED; spin_unlock(&journal->j_state_lock); } @@ -1000,17 +1000,17 @@ static int journal_get_superblock(journal_t *journal) err = -EINVAL; - if (sb->s_header.h_magic != cpu_to_be32(JFS_MAGIC_NUMBER) || + if (sb->s_header.h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER) || sb->s_blocksize != cpu_to_be32(journal->j_blocksize)) { printk(KERN_WARNING "JBD: no valid journal superblock found\n"); goto out; } switch(be32_to_cpu(sb->s_header.h_blocktype)) { - case JFS_SUPERBLOCK_V1: + case JBD2_SUPERBLOCK_V1: journal->j_format_version = 1; break; - case JFS_SUPERBLOCK_V2: + case JBD2_SUPERBLOCK_V2: journal->j_format_version = 2; break; default: @@ -1059,14 +1059,14 @@ static int load_superblock(journal_t *journal) /** - * int journal_load() - Read journal from disk. + * int jbd2_journal_load() - Read journal from disk. * @journal: Journal to act on. * * Given a journal_t structure which tells us which disk blocks contain * a journal, read the journal from disk to initialise the in-memory * structures. */ -int journal_load(journal_t *journal) +int jbd2_journal_load(journal_t *journal) { int err; journal_superblock_t *sb; @@ -1081,9 +1081,9 @@ int journal_load(journal_t *journal) if (journal->j_format_version >= 2) { if ((sb->s_feature_ro_compat & - ~cpu_to_be32(JFS_KNOWN_ROCOMPAT_FEATURES)) || + ~cpu_to_be32(JBD2_KNOWN_ROCOMPAT_FEATURES)) || (sb->s_feature_incompat & - ~cpu_to_be32(JFS_KNOWN_INCOMPAT_FEATURES))) { + ~cpu_to_be32(JBD2_KNOWN_INCOMPAT_FEATURES))) { printk (KERN_WARNING "JBD: Unrecognised features on journal\n"); return -EINVAL; @@ -1093,13 +1093,13 @@ int journal_load(journal_t *journal) /* * Create a slab for this blocksize */ - err = journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize)); + err = jbd2_journal_create_jbd_slab(be32_to_cpu(sb->s_blocksize)); if (err) return err; /* Let the recovery code check whether it needs to recover any * data from the journal. */ - if (journal_recover(journal)) + if (jbd2_journal_recover(journal)) goto recovery_error; /* OK, we've finished with the dynamic journal bits: @@ -1108,8 +1108,8 @@ int journal_load(journal_t *journal) if (journal_reset(journal)) goto recovery_error; - journal->j_flags &= ~JFS_ABORT; - journal->j_flags |= JFS_LOADED; + journal->j_flags &= ~JBD2_ABORT; + journal->j_flags |= JBD2_LOADED; return 0; recovery_error: @@ -1118,20 +1118,20 @@ recovery_error: } /** - * void journal_destroy() - Release a journal_t structure. + * void jbd2_journal_destroy() - Release a journal_t structure. * @journal: Journal to act on. * * Release a journal_t structure once it is no longer in use by the * journaled object. */ -void journal_destroy(journal_t *journal) +void jbd2_journal_destroy(journal_t *journal) { /* Wait for the commit thread to wake up and die. */ journal_kill_thread(journal); /* Force a final log commit */ if (journal->j_running_transaction) - journal_commit_transaction(journal); + jbd2_journal_commit_transaction(journal); /* Force any old transactions to disk */ @@ -1139,7 +1139,7 @@ void journal_destroy(journal_t *journal) spin_lock(&journal->j_list_lock); while (journal->j_checkpoint_transactions != NULL) { spin_unlock(&journal->j_list_lock); - log_do_checkpoint(journal); + jbd2_log_do_checkpoint(journal); spin_lock(&journal->j_list_lock); } @@ -1152,21 +1152,21 @@ void journal_destroy(journal_t *journal) journal->j_tail = 0; journal->j_tail_sequence = ++journal->j_transaction_sequence; if (journal->j_sb_buffer) { - journal_update_superblock(journal, 1); + jbd2_journal_update_superblock(journal, 1); brelse(journal->j_sb_buffer); } if (journal->j_inode) iput(journal->j_inode); if (journal->j_revoke) - journal_destroy_revoke(journal); + jbd2_journal_destroy_revoke(journal); kfree(journal->j_wbuf); kfree(journal); } /** - *int journal_check_used_features () - Check if features specified are used. + *int jbd2_journal_check_used_features () - Check if features specified are used. * @journal: Journal to check. * @compat: bitmask of compatible features * @ro: bitmask of features that force read-only mount @@ -1176,7 +1176,7 @@ void journal_destroy(journal_t *journal) * features. Return true (non-zero) if it does. **/ -int journal_check_used_features (journal_t *journal, unsigned long compat, +int jbd2_journal_check_used_features (journal_t *journal, unsigned long compat, unsigned long ro, unsigned long incompat) { journal_superblock_t *sb; @@ -1197,7 +1197,7 @@ int journal_check_used_features (journal_t *journal, unsigned long compat, } /** - * int journal_check_available_features() - Check feature set in journalling layer + * int jbd2_journal_check_available_features() - Check feature set in journalling layer * @journal: Journal to check. * @compat: bitmask of compatible features * @ro: bitmask of features that force read-only mount @@ -1207,7 +1207,7 @@ int journal_check_used_features (journal_t *journal, unsigned long compat, * all of a given set of features on this journal. Return true * (non-zero) if it can. */ -int journal_check_available_features (journal_t *journal, unsigned long compat, +int jbd2_journal_check_available_features (journal_t *journal, unsigned long compat, unsigned long ro, unsigned long incompat) { journal_superblock_t *sb; @@ -1224,16 +1224,16 @@ int journal_check_available_features (journal_t *journal, unsigned long compat, if (journal->j_format_version != 2) return 0; - if ((compat & JFS_KNOWN_COMPAT_FEATURES) == compat && - (ro & JFS_KNOWN_ROCOMPAT_FEATURES) == ro && - (incompat & JFS_KNOWN_INCOMPAT_FEATURES) == incompat) + if ((compat & JBD2_KNOWN_COMPAT_FEATURES) == compat && + (ro & JBD2_KNOWN_ROCOMPAT_FEATURES) == ro && + (incompat & JBD2_KNOWN_INCOMPAT_FEATURES) == incompat) return 1; return 0; } /** - * int journal_set_features () - Mark a given journal feature in the superblock + * int jbd2_journal_set_features () - Mark a given journal feature in the superblock * @journal: Journal to act on. * @compat: bitmask of compatible features * @ro: bitmask of features that force read-only mount @@ -1244,15 +1244,15 @@ int journal_check_available_features (journal_t *journal, unsigned long compat, * */ -int journal_set_features (journal_t *journal, unsigned long compat, +int jbd2_journal_set_features (journal_t *journal, unsigned long compat, unsigned long ro, unsigned long incompat) { journal_superblock_t *sb; - if (journal_check_used_features(journal, compat, ro, incompat)) + if (jbd2_journal_check_used_features(journal, compat, ro, incompat)) return 1; - if (!journal_check_available_features(journal, compat, ro, incompat)) + if (!jbd2_journal_check_available_features(journal, compat, ro, incompat)) return 0; jbd_debug(1, "Setting new features 0x%lx/0x%lx/0x%lx\n", @@ -1269,13 +1269,13 @@ int journal_set_features (journal_t *journal, unsigned long compat, /** - * int journal_update_format () - Update on-disk journal structure. + * int jbd2_journal_update_format () - Update on-disk journal structure. * @journal: Journal to act on. * * Given an initialised but unloaded journal struct, poke about in the * on-disk structure to update it to the most recent supported version. */ -int journal_update_format (journal_t *journal) +int jbd2_journal_update_format (journal_t *journal) { journal_superblock_t *sb; int err; @@ -1287,9 +1287,9 @@ int journal_update_format (journal_t *journal) sb = journal->j_superblock; switch (be32_to_cpu(sb->s_header.h_blocktype)) { - case JFS_SUPERBLOCK_V2: + case JBD2_SUPERBLOCK_V2: return 0; - case JFS_SUPERBLOCK_V1: + case JBD2_SUPERBLOCK_V1: return journal_convert_superblock_v1(journal, sb); default: break; @@ -1312,7 +1312,7 @@ static int journal_convert_superblock_v1(journal_t *journal, memset(&sb->s_feature_compat, 0, blocksize-offset); sb->s_nr_users = cpu_to_be32(1); - sb->s_header.h_blocktype = cpu_to_be32(JFS_SUPERBLOCK_V2); + sb->s_header.h_blocktype = cpu_to_be32(JBD2_SUPERBLOCK_V2); journal->j_format_version = 2; bh = journal->j_sb_buffer; @@ -1324,7 +1324,7 @@ static int journal_convert_superblock_v1(journal_t *journal, /** - * int journal_flush () - Flush journal + * int jbd2_journal_flush () - Flush journal * @journal: Journal to act on. * * Flush all data for a given journal to disk and empty the journal. @@ -1332,7 +1332,7 @@ static int journal_convert_superblock_v1(journal_t *journal, * recovery does not need to happen on remount. */ -int journal_flush(journal_t *journal) +int jbd2_journal_flush(journal_t *journal) { int err = 0; transaction_t *transaction = NULL; @@ -1343,7 +1343,7 @@ int journal_flush(journal_t *journal) /* Force everything buffered to the log... */ if (journal->j_running_transaction) { transaction = journal->j_running_transaction; - __log_start_commit(journal, transaction->t_tid); + __jbd2_log_start_commit(journal, transaction->t_tid); } else if (journal->j_committing_transaction) transaction = journal->j_committing_transaction; @@ -1352,7 +1352,7 @@ int journal_flush(journal_t *journal) tid_t tid = transaction->t_tid; spin_unlock(&journal->j_state_lock); - log_wait_commit(journal, tid); + jbd2_log_wait_commit(journal, tid); } else { spin_unlock(&journal->j_state_lock); } @@ -1361,11 +1361,11 @@ int journal_flush(journal_t *journal) spin_lock(&journal->j_list_lock); while (!err && journal->j_checkpoint_transactions != NULL) { spin_unlock(&journal->j_list_lock); - err = log_do_checkpoint(journal); + err = jbd2_log_do_checkpoint(journal); spin_lock(&journal->j_list_lock); } spin_unlock(&journal->j_list_lock); - cleanup_journal_tail(journal); + jbd2_cleanup_journal_tail(journal); /* Finally, mark the journal as really needing no recovery. * This sets s_start==0 in the underlying superblock, which is @@ -1376,7 +1376,7 @@ int journal_flush(journal_t *journal) old_tail = journal->j_tail; journal->j_tail = 0; spin_unlock(&journal->j_state_lock); - journal_update_superblock(journal, 1); + jbd2_journal_update_superblock(journal, 1); spin_lock(&journal->j_state_lock); journal->j_tail = old_tail; @@ -1390,24 +1390,24 @@ int journal_flush(journal_t *journal) } /** - * int journal_wipe() - Wipe journal contents + * int jbd2_journal_wipe() - Wipe journal contents * @journal: Journal to act on. * @write: flag (see below) * * Wipe out all of the contents of a journal, safely. This will produce * a warning if the journal contains any valid recovery information. - * Must be called between journal_init_*() and journal_load(). + * Must be called between journal_init_*() and jbd2_journal_load(). * * If 'write' is non-zero, then we wipe out the journal on disk; otherwise * we merely suppress recovery. */ -int journal_wipe(journal_t *journal, int write) +int jbd2_journal_wipe(journal_t *journal, int write) { journal_superblock_t *sb; int err = 0; - J_ASSERT (!(journal->j_flags & JFS_LOADED)); + J_ASSERT (!(journal->j_flags & JBD2_LOADED)); err = load_superblock(journal); if (err) @@ -1421,9 +1421,9 @@ int journal_wipe(journal_t *journal, int write) printk (KERN_WARNING "JBD: %s recovery information on journal\n", write ? "Clearing" : "Ignoring"); - err = journal_skip_recovery(journal); + err = jbd2_journal_skip_recovery(journal); if (write) - journal_update_superblock(journal, 1); + jbd2_journal_update_superblock(journal, 1); no_recovery: return err; @@ -1459,22 +1459,22 @@ static const char *journal_dev_name(journal_t *journal, char *buffer) * Aborts hard --- we mark the abort as occurred, but do _nothing_ else, * and don't attempt to make any other journal updates. */ -void __journal_abort_hard(journal_t *journal) +void __jbd2_journal_abort_hard(journal_t *journal) { transaction_t *transaction; char b[BDEVNAME_SIZE]; - if (journal->j_flags & JFS_ABORT) + if (journal->j_flags & JBD2_ABORT) return; printk(KERN_ERR "Aborting journal on device %s.\n", journal_dev_name(journal, b)); spin_lock(&journal->j_state_lock); - journal->j_flags |= JFS_ABORT; + journal->j_flags |= JBD2_ABORT; transaction = journal->j_running_transaction; if (transaction) - __log_start_commit(journal, transaction->t_tid); + __jbd2_log_start_commit(journal, transaction->t_tid); spin_unlock(&journal->j_state_lock); } @@ -1482,20 +1482,20 @@ void __journal_abort_hard(journal_t *journal) * but don't do any other IO. */ static void __journal_abort_soft (journal_t *journal, int errno) { - if (journal->j_flags & JFS_ABORT) + if (journal->j_flags & JBD2_ABORT) return; if (!journal->j_errno) journal->j_errno = errno; - __journal_abort_hard(journal); + __jbd2_journal_abort_hard(journal); if (errno) - journal_update_superblock(journal, 1); + jbd2_journal_update_superblock(journal, 1); } /** - * void journal_abort () - Shutdown the journal immediately. + * void jbd2_journal_abort () - Shutdown the journal immediately. * @journal: the journal to shutdown. * @errno: an error number to record in the journal indicating * the reason for the shutdown. @@ -1504,7 +1504,7 @@ static void __journal_abort_soft (journal_t *journal, int errno) * journal (not of a single transaction). This operation cannot be * undone without closing and reopening the journal. * - * The journal_abort function is intended to support higher level error + * The jbd2_journal_abort function is intended to support higher level error * recovery mechanisms such as the ext2/ext3 remount-readonly error * mode. * @@ -1520,13 +1520,13 @@ static void __journal_abort_soft (journal_t *journal, int errno) * * Any attempt to get a new transaction handle on a journal which is in * ABORT state will just result in an -EROFS error return. A - * journal_stop on an existing handle will return -EIO if we have + * jbd2_journal_stop on an existing handle will return -EIO if we have * entered abort state during the update. * * Recursive transactions are not disturbed by journal abort until the - * final journal_stop, which will receive the -EIO error. + * final jbd2_journal_stop, which will receive the -EIO error. * - * Finally, the journal_abort call allows the caller to supply an errno + * Finally, the jbd2_journal_abort call allows the caller to supply an errno * which will be recorded (if possible) in the journal superblock. This * allows a client to record failure conditions in the middle of a * transaction without having to complete the transaction to record the @@ -1540,28 +1540,28 @@ static void __journal_abort_soft (journal_t *journal, int errno) * */ -void journal_abort(journal_t *journal, int errno) +void jbd2_journal_abort(journal_t *journal, int errno) { __journal_abort_soft(journal, errno); } /** - * int journal_errno () - returns the journal's error state. + * int jbd2_journal_errno () - returns the journal's error state. * @journal: journal to examine. * - * This is the errno numbet set with journal_abort(), the last + * This is the errno numbet set with jbd2_journal_abort(), the last * time the journal was mounted - if the journal was stopped * without calling abort this will be 0. * * If the journal has been aborted on this mount time -EROFS will * be returned. */ -int journal_errno(journal_t *journal) +int jbd2_journal_errno(journal_t *journal) { int err; spin_lock(&journal->j_state_lock); - if (journal->j_flags & JFS_ABORT) + if (journal->j_flags & JBD2_ABORT) err = -EROFS; else err = journal->j_errno; @@ -1570,18 +1570,18 @@ int journal_errno(journal_t *journal) } /** - * int journal_clear_err () - clears the journal's error state + * int jbd2_journal_clear_err () - clears the journal's error state * @journal: journal to act on. * * An error must be cleared or Acked to take a FS out of readonly * mode. */ -int journal_clear_err(journal_t *journal) +int jbd2_journal_clear_err(journal_t *journal) { int err = 0; spin_lock(&journal->j_state_lock); - if (journal->j_flags & JFS_ABORT) + if (journal->j_flags & JBD2_ABORT) err = -EROFS; else journal->j_errno = 0; @@ -1590,21 +1590,21 @@ int journal_clear_err(journal_t *journal) } /** - * void journal_ack_err() - Ack journal err. + * void jbd2_journal_ack_err() - Ack journal err. * @journal: journal to act on. * * An error must be cleared or Acked to take a FS out of readonly * mode. */ -void journal_ack_err(journal_t *journal) +void jbd2_journal_ack_err(journal_t *journal) { spin_lock(&journal->j_state_lock); if (journal->j_errno) - journal->j_flags |= JFS_ACK_ERR; + journal->j_flags |= JBD2_ACK_ERR; spin_unlock(&journal->j_state_lock); } -int journal_blocks_per_page(struct inode *inode) +int jbd2_journal_blocks_per_page(struct inode *inode) { return 1 << (PAGE_CACHE_SHIFT - inode->i_sb->s_blocksize_bits); } @@ -1613,7 +1613,7 @@ int journal_blocks_per_page(struct inode *inode) * Simple support for retrying memory allocations. Introduced to help to * debug different VM deadlock avoidance strategies. */ -void * __jbd_kmalloc (const char *where, size_t size, gfp_t flags, int retry) +void * __jbd2_kmalloc (const char *where, size_t size, gfp_t flags, int retry) { return kmalloc(size, flags | (retry ? __GFP_NOFAIL : 0)); } @@ -1634,7 +1634,7 @@ static const char *jbd_slab_names[JBD_MAX_SLABS] = { "jbd_1k", "jbd_2k", "jbd_4k", NULL, "jbd_8k" }; -static void journal_destroy_jbd_slabs(void) +static void jbd2_journal_destroy_jbd_slabs(void) { int i; @@ -1645,7 +1645,7 @@ static void journal_destroy_jbd_slabs(void) } } -static int journal_create_jbd_slab(size_t slab_size) +static int jbd2_journal_create_jbd_slab(size_t slab_size) { int i = JBD_SLAB_INDEX(slab_size); @@ -1671,7 +1671,7 @@ static int journal_create_jbd_slab(size_t slab_size) return 0; } -void * jbd_slab_alloc(size_t size, gfp_t flags) +void * jbd2_slab_alloc(size_t size, gfp_t flags) { int idx; @@ -1680,7 +1680,7 @@ void * jbd_slab_alloc(size_t size, gfp_t flags) return kmem_cache_alloc(jbd_slab[idx], flags | __GFP_NOFAIL); } -void jbd_slab_free(void *ptr, size_t size) +void jbd2_slab_free(void *ptr, size_t size) { int idx; @@ -1692,35 +1692,35 @@ void jbd_slab_free(void *ptr, size_t size) /* * Journal_head storage management */ -static kmem_cache_t *journal_head_cache; +static kmem_cache_t *jbd2_journal_head_cache; #ifdef CONFIG_JBD_DEBUG static atomic_t nr_journal_heads = ATOMIC_INIT(0); #endif -static int journal_init_journal_head_cache(void) +static int journal_init_jbd2_journal_head_cache(void) { int retval; - J_ASSERT(journal_head_cache == 0); - journal_head_cache = kmem_cache_create("journal_head", + J_ASSERT(jbd2_journal_head_cache == 0); + jbd2_journal_head_cache = kmem_cache_create("journal_head", sizeof(struct journal_head), 0, /* offset */ 0, /* flags */ NULL, /* ctor */ NULL); /* dtor */ retval = 0; - if (journal_head_cache == 0) { + if (jbd2_journal_head_cache == 0) { retval = -ENOMEM; printk(KERN_EMERG "JBD: no memory for journal_head cache\n"); } return retval; } -static void journal_destroy_journal_head_cache(void) +static void jbd2_journal_destroy_jbd2_journal_head_cache(void) { - J_ASSERT(journal_head_cache != NULL); - kmem_cache_destroy(journal_head_cache); - journal_head_cache = NULL; + J_ASSERT(jbd2_journal_head_cache != NULL); + kmem_cache_destroy(jbd2_journal_head_cache); + jbd2_journal_head_cache = NULL; } /* @@ -1734,7 +1734,7 @@ static struct journal_head *journal_alloc_journal_head(void) #ifdef CONFIG_JBD_DEBUG atomic_inc(&nr_journal_heads); #endif - ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS); + ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS); if (ret == 0) { jbd_debug(1, "out of memory for journal_head\n"); if (time_after(jiffies, last_warning + 5*HZ)) { @@ -1744,7 +1744,7 @@ static struct journal_head *journal_alloc_journal_head(void) } while (ret == 0) { yield(); - ret = kmem_cache_alloc(journal_head_cache, GFP_NOFS); + ret = kmem_cache_alloc(jbd2_journal_head_cache, GFP_NOFS); } } return ret; @@ -1756,7 +1756,7 @@ static void journal_free_journal_head(struct journal_head *jh) atomic_dec(&nr_journal_heads); memset(jh, JBD_POISON_FREE, sizeof(*jh)); #endif - kmem_cache_free(journal_head_cache, jh); + kmem_cache_free(jbd2_journal_head_cache, jh); } /* @@ -1775,22 +1775,22 @@ static void journal_free_journal_head(struct journal_head *jh) * * A journal_head may be detached from its buffer_head when the journal_head's * b_transaction, b_cp_transaction and b_next_transaction pointers are NULL. - * Various places in JBD call journal_remove_journal_head() to indicate that the + * Various places in JBD call jbd2_journal_remove_journal_head() to indicate that the * journal_head can be dropped if needed. * * Various places in the kernel want to attach a journal_head to a buffer_head * _before_ attaching the journal_head to a transaction. To protect the - * journal_head in this situation, journal_add_journal_head elevates the + * journal_head in this situation, jbd2_journal_add_journal_head elevates the * journal_head's b_jcount refcount by one. The caller must call - * journal_put_journal_head() to undo this. + * jbd2_journal_put_journal_head() to undo this. * * So the typical usage would be: * * (Attach a journal_head if needed. Increments b_jcount) - * struct journal_head *jh = journal_add_journal_head(bh); + * struct journal_head *jh = jbd2_journal_add_journal_head(bh); * ... * jh->b_transaction = xxx; - * journal_put_journal_head(jh); + * jbd2_journal_put_journal_head(jh); * * Now, the journal_head's b_jcount is zero, but it is safe from being released * because it has a non-zero b_transaction. @@ -1802,7 +1802,7 @@ static void journal_free_journal_head(struct journal_head *jh) * Doesn't need the journal lock. * May sleep. */ -struct journal_head *journal_add_journal_head(struct buffer_head *bh) +struct journal_head *jbd2_journal_add_journal_head(struct buffer_head *bh) { struct journal_head *jh; struct journal_head *new_jh = NULL; @@ -1845,7 +1845,7 @@ repeat: * Grab a ref against this buffer_head's journal_head. If it ended up not * having a journal_head, return NULL */ -struct journal_head *journal_grab_journal_head(struct buffer_head *bh) +struct journal_head *jbd2_journal_grab_journal_head(struct buffer_head *bh) { struct journal_head *jh = NULL; @@ -1877,13 +1877,13 @@ static void __journal_remove_journal_head(struct buffer_head *bh) printk(KERN_WARNING "%s: freeing " "b_frozen_data\n", __FUNCTION__); - jbd_slab_free(jh->b_frozen_data, bh->b_size); + jbd2_slab_free(jh->b_frozen_data, bh->b_size); } if (jh->b_committed_data) { printk(KERN_WARNING "%s: freeing " "b_committed_data\n", __FUNCTION__); - jbd_slab_free(jh->b_committed_data, bh->b_size); + jbd2_slab_free(jh->b_committed_data, bh->b_size); } bh->b_private = NULL; jh->b_bh = NULL; /* debug, really */ @@ -1897,7 +1897,7 @@ static void __journal_remove_journal_head(struct buffer_head *bh) } /* - * journal_remove_journal_head(): if the buffer isn't attached to a transaction + * jbd2_journal_remove_journal_head(): if the buffer isn't attached to a transaction * and has a zero b_jcount then remove and release its journal_head. If we did * see that the buffer is not used by any transaction we also "logically" * decrement ->b_count. @@ -1905,11 +1905,11 @@ static void __journal_remove_journal_head(struct buffer_head *bh) * We in fact take an additional increment on ->b_count as a convenience, * because the caller usually wants to do additional things with the bh * after calling here. - * The caller of journal_remove_journal_head() *must* run __brelse(bh) at some + * The caller of jbd2_journal_remove_journal_head() *must* run __brelse(bh) at some * time. Once the caller has run __brelse(), the buffer is eligible for * reaping by try_to_free_buffers(). */ -void journal_remove_journal_head(struct buffer_head *bh) +void jbd2_journal_remove_journal_head(struct buffer_head *bh) { jbd_lock_bh_journal_head(bh); __journal_remove_journal_head(bh); @@ -1920,7 +1920,7 @@ void journal_remove_journal_head(struct buffer_head *bh) * Drop a reference on the passed journal_head. If it fell to zero then try to * release the journal_head from the buffer_head. */ -void journal_put_journal_head(struct journal_head *jh) +void jbd2_journal_put_journal_head(struct journal_head *jh) { struct buffer_head *bh = jh2bh(jh); @@ -1938,8 +1938,8 @@ void journal_put_journal_head(struct journal_head *jh) * /proc tunables */ #if defined(CONFIG_JBD_DEBUG) -int journal_enable_debug; -EXPORT_SYMBOL(journal_enable_debug); +int jbd2_journal_enable_debug; +EXPORT_SYMBOL(jbd2_journal_enable_debug); #endif #if defined(CONFIG_JBD_DEBUG) && defined(CONFIG_PROC_FS) @@ -1951,7 +1951,7 @@ static int read_jbd_debug(char *page, char **start, off_t off, { int ret; - ret = sprintf(page + off, "%d\n", journal_enable_debug); + ret = sprintf(page + off, "%d\n", jbd2_journal_enable_debug); *eof = 1; return ret; } @@ -1966,11 +1966,11 @@ static int write_jbd_debug(struct file *file, const char __user *buffer, if (copy_from_user(buf, buffer, count)) return -EFAULT; buf[ARRAY_SIZE(buf) - 1] = '\0'; - journal_enable_debug = simple_strtoul(buf, NULL, 10); + jbd2_journal_enable_debug = simple_strtoul(buf, NULL, 10); return count; } -#define JBD_PROC_NAME "sys/fs/jbd-debug" +#define JBD_PROC_NAME "sys/fs/jbd2-debug" static void __init create_jbd_proc_entry(void) { @@ -1982,7 +1982,7 @@ static void __init create_jbd_proc_entry(void) } } -static void __exit remove_jbd_proc_entry(void) +static void __exit jbd2_remove_jbd_proc_entry(void) { if (proc_jbd_debug) remove_proc_entry(JBD_PROC_NAME, NULL); @@ -1991,31 +1991,31 @@ static void __exit remove_jbd_proc_entry(void) #else #define create_jbd_proc_entry() do {} while (0) -#define remove_jbd_proc_entry() do {} while (0) +#define jbd2_remove_jbd_proc_entry() do {} while (0) #endif -kmem_cache_t *jbd_handle_cache; +kmem_cache_t *jbd2_handle_cache; static int __init journal_init_handle_cache(void) { - jbd_handle_cache = kmem_cache_create("journal_handle", + jbd2_handle_cache = kmem_cache_create("journal_handle", sizeof(handle_t), 0, /* offset */ 0, /* flags */ NULL, /* ctor */ NULL); /* dtor */ - if (jbd_handle_cache == NULL) { + if (jbd2_handle_cache == NULL) { printk(KERN_EMERG "JBD: failed to create handle cache\n"); return -ENOMEM; } return 0; } -static void journal_destroy_handle_cache(void) +static void jbd2_journal_destroy_handle_cache(void) { - if (jbd_handle_cache) - kmem_cache_destroy(jbd_handle_cache); + if (jbd2_handle_cache) + kmem_cache_destroy(jbd2_handle_cache); } /* @@ -2026,20 +2026,20 @@ static int __init journal_init_caches(void) { int ret; - ret = journal_init_revoke_caches(); + ret = jbd2_journal_init_revoke_caches(); if (ret == 0) - ret = journal_init_journal_head_cache(); + ret = journal_init_jbd2_journal_head_cache(); if (ret == 0) ret = journal_init_handle_cache(); return ret; } -static void journal_destroy_caches(void) +static void jbd2_journal_destroy_caches(void) { - journal_destroy_revoke_caches(); - journal_destroy_journal_head_cache(); - journal_destroy_handle_cache(); - journal_destroy_jbd_slabs(); + jbd2_journal_destroy_revoke_caches(); + jbd2_journal_destroy_jbd2_journal_head_cache(); + jbd2_journal_destroy_handle_cache(); + jbd2_journal_destroy_jbd_slabs(); } static int __init journal_init(void) @@ -2050,7 +2050,7 @@ static int __init journal_init(void) ret = journal_init_caches(); if (ret != 0) - journal_destroy_caches(); + jbd2_journal_destroy_caches(); create_jbd_proc_entry(); return ret; } @@ -2062,8 +2062,8 @@ static void __exit journal_exit(void) if (n) printk(KERN_EMERG "JBD: leaked %d journal_heads!\n", n); #endif - remove_jbd_proc_entry(); - journal_destroy_caches(); + jbd2_remove_jbd_proc_entry(); + jbd2_journal_destroy_caches(); } MODULE_LICENSE("GPL"); diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 11563fe2a52b..b2012d112432 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -18,7 +18,7 @@ #else #include <linux/time.h> #include <linux/fs.h> -#include <linux/jbd.h> +#include <linux/jbd2.h> #include <linux/errno.h> #include <linux/slab.h> #endif @@ -86,7 +86,7 @@ static int do_readahead(journal_t *journal, unsigned int start) nbufs = 0; for (next = start; next < max; next++) { - err = journal_bmap(journal, next, &blocknr); + err = jbd2_journal_bmap(journal, next, &blocknr); if (err) { printk (KERN_ERR "JBD: bad block at offset %u\n", @@ -142,7 +142,7 @@ static int jread(struct buffer_head **bhp, journal_t *journal, return -EIO; } - err = journal_bmap(journal, offset, &blocknr); + err = jbd2_journal_bmap(journal, offset, &blocknr); if (err) { printk (KERN_ERR "JBD: bad block at offset %u\n", @@ -191,10 +191,10 @@ static int count_tags(struct buffer_head *bh, int size) nr++; tagp += sizeof(journal_block_tag_t); - if (!(tag->t_flags & cpu_to_be32(JFS_FLAG_SAME_UUID))) + if (!(tag->t_flags & cpu_to_be32(JBD2_FLAG_SAME_UUID))) tagp += 16; - if (tag->t_flags & cpu_to_be32(JFS_FLAG_LAST_TAG)) + if (tag->t_flags & cpu_to_be32(JBD2_FLAG_LAST_TAG)) break; } @@ -210,7 +210,7 @@ do { \ } while (0) /** - * journal_recover - recovers a on-disk journal + * jbd2_journal_recover - recovers a on-disk journal * @journal: the journal to recover * * The primary function for recovering the log contents when mounting a @@ -221,7 +221,7 @@ do { \ * blocks. In the third and final pass, we replay any un-revoked blocks * in the log. */ -int journal_recover(journal_t *journal) +int jbd2_journal_recover(journal_t *journal) { int err; journal_superblock_t * sb; @@ -260,13 +260,13 @@ int journal_recover(journal_t *journal) * any existing commit records in the log. */ journal->j_transaction_sequence = ++info.end_transaction; - journal_clear_revoke(journal); + jbd2_journal_clear_revoke(journal); sync_blockdev(journal->j_fs_dev); return err; } /** - * journal_skip_recovery - Start journal and wipe exiting records + * jbd2_journal_skip_recovery - Start journal and wipe exiting records * @journal: journal to startup * * Locate any valid recovery information from the journal and set up the @@ -278,7 +278,7 @@ int journal_recover(journal_t *journal) * much recovery information is being erased, and to let us initialise * the journal transaction sequence numbers to the next unused ID. */ -int journal_skip_recovery(journal_t *journal) +int jbd2_journal_skip_recovery(journal_t *journal) { int err; journal_superblock_t * sb; @@ -387,7 +387,7 @@ static int do_one_pass(journal_t *journal, tmp = (journal_header_t *)bh->b_data; - if (tmp->h_magic != cpu_to_be32(JFS_MAGIC_NUMBER)) { + if (tmp->h_magic != cpu_to_be32(JBD2_MAGIC_NUMBER)) { brelse(bh); break; } @@ -407,7 +407,7 @@ static int do_one_pass(journal_t *journal, * to do with it? That depends on the pass... */ switch(blocktype) { - case JFS_DESCRIPTOR_BLOCK: + case JBD2_DESCRIPTOR_BLOCK: /* If it is a valid descriptor block, replay it * in pass REPLAY; otherwise, just skip over the * blocks it describes. */ @@ -451,7 +451,7 @@ static int do_one_pass(journal_t *journal, /* If the block has been * revoked, then we're all done * here. */ - if (journal_test_revoke + if (jbd2_journal_test_revoke (journal, blocknr, next_commit_ID)) { brelse(obh); @@ -477,9 +477,9 @@ static int do_one_pass(journal_t *journal, lock_buffer(nbh); memcpy(nbh->b_data, obh->b_data, journal->j_blocksize); - if (flags & JFS_FLAG_ESCAPE) { + if (flags & JBD2_FLAG_ESCAPE) { *((__be32 *)bh->b_data) = - cpu_to_be32(JFS_MAGIC_NUMBER); + cpu_to_be32(JBD2_MAGIC_NUMBER); } BUFFER_TRACE(nbh, "marking dirty"); @@ -495,17 +495,17 @@ static int do_one_pass(journal_t *journal, skip_write: tagp += sizeof(journal_block_tag_t); - if (!(flags & JFS_FLAG_SAME_UUID)) + if (!(flags & JBD2_FLAG_SAME_UUID)) tagp += 16; - if (flags & JFS_FLAG_LAST_TAG) + if (flags & JBD2_FLAG_LAST_TAG) break; } brelse(bh); continue; - case JFS_COMMIT_BLOCK: + case JBD2_COMMIT_BLOCK: /* Found an expected commit block: not much to * do other than move on to the next sequence * number. */ @@ -513,7 +513,7 @@ static int do_one_pass(journal_t *journal, next_commit_ID++; continue; - case JFS_REVOKE_BLOCK: + case JBD2_REVOKE_BLOCK: /* If we aren't in the REVOKE pass, then we can * just skip over this block. */ if (pass != PASS_REVOKE) { @@ -570,11 +570,11 @@ static int do_one_pass(journal_t *journal, static int scan_revoke_records(journal_t *journal, struct buffer_head *bh, tid_t sequence, struct recovery_info *info) { - journal_revoke_header_t *header; + jbd2_journal_revoke_header_t *header; int offset, max; - header = (journal_revoke_header_t *) bh->b_data; - offset = sizeof(journal_revoke_header_t); + header = (jbd2_journal_revoke_header_t *) bh->b_data; + offset = sizeof(jbd2_journal_revoke_header_t); max = be32_to_cpu(header->r_count); while (offset < max) { @@ -583,7 +583,7 @@ static int scan_revoke_records(journal_t *journal, struct buffer_head *bh, blocknr = be32_to_cpu(* ((__be32 *) (bh->b_data+offset))); offset += 4; - err = journal_set_revoke(journal, blocknr, sequence); + err = jbd2_journal_set_revoke(journal, blocknr, sequence); if (err) return err; ++info->nr_revokes; diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index c532429d8d9b..2fccddc7acad 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -62,7 +62,7 @@ #else #include <linux/time.h> #include <linux/fs.h> -#include <linux/jbd.h> +#include <linux/jbd2.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/list.h> @@ -70,14 +70,14 @@ #include <linux/init.h> #endif -static kmem_cache_t *revoke_record_cache; -static kmem_cache_t *revoke_table_cache; +static kmem_cache_t *jbd2_revoke_record_cache; +static kmem_cache_t *jbd2_revoke_table_cache; /* Each revoke record represents one single revoked block. During journal replay, this involves recording the transaction ID of the last transaction to revoke this block. */ -struct jbd_revoke_record_s +struct jbd2_revoke_record_s { struct list_head hash; tid_t sequence; /* Used for recovery only */ @@ -86,7 +86,7 @@ struct jbd_revoke_record_s /* The revoke table is just a simple hash table of revoke records. */ -struct jbd_revoke_table_s +struct jbd2_revoke_table_s { /* It is conceivable that we might want a larger hash table * for recovery. Must be a power of two. */ @@ -99,7 +99,7 @@ struct jbd_revoke_table_s #ifdef __KERNEL__ static void write_one_revoke_record(journal_t *, transaction_t *, struct journal_head **, int *, - struct jbd_revoke_record_s *); + struct jbd2_revoke_record_s *); static void flush_descriptor(journal_t *, struct journal_head *, int); #endif @@ -108,7 +108,7 @@ static void flush_descriptor(journal_t *, struct journal_head *, int); /* Borrowed from buffer.c: this is a tried and tested block hash function */ static inline int hash(journal_t *journal, unsigned long block) { - struct jbd_revoke_table_s *table = journal->j_revoke; + struct jbd2_revoke_table_s *table = journal->j_revoke; int hash_shift = table->hash_shift; return ((block << (hash_shift - 6)) ^ @@ -120,10 +120,10 @@ static int insert_revoke_hash(journal_t *journal, unsigned long blocknr, tid_t seq) { struct list_head *hash_list; - struct jbd_revoke_record_s *record; + struct jbd2_revoke_record_s *record; repeat: - record = kmem_cache_alloc(revoke_record_cache, GFP_NOFS); + record = kmem_cache_alloc(jbd2_revoke_record_cache, GFP_NOFS); if (!record) goto oom; @@ -145,57 +145,57 @@ oom: /* Find a revoke record in the journal's hash table. */ -static struct jbd_revoke_record_s *find_revoke_record(journal_t *journal, +static struct jbd2_revoke_record_s *find_revoke_record(journal_t *journal, unsigned long blocknr) { struct list_head *hash_list; - struct jbd_revoke_record_s *record; + struct jbd2_revoke_record_s *record; hash_list = &journal->j_revoke->hash_table[hash(journal, blocknr)]; spin_lock(&journal->j_revoke_lock); - record = (struct jbd_revoke_record_s *) hash_list->next; + record = (struct jbd2_revoke_record_s *) hash_list->next; while (&(record->hash) != hash_list) { if (record->blocknr == blocknr) { spin_unlock(&journal->j_revoke_lock); return record; } - record = (struct jbd_revoke_record_s *) record->hash.next; + record = (struct jbd2_revoke_record_s *) record->hash.next; } spin_unlock(&journal->j_revoke_lock); return NULL; } -int __init journal_init_revoke_caches(void) +int __init jbd2_journal_init_revoke_caches(void) { - revoke_record_cache = kmem_cache_create("revoke_record", - sizeof(struct jbd_revoke_record_s), + jbd2_revoke_record_cache = kmem_cache_create("revoke_record", + sizeof(struct jbd2_revoke_record_s), 0, SLAB_HWCACHE_ALIGN, NULL, NULL); - if (revoke_record_cache == 0) + if (jbd2_revoke_record_cache == 0) return -ENOMEM; - revoke_table_cache = kmem_cache_create("revoke_table", - sizeof(struct jbd_revoke_table_s), + jbd2_revoke_table_cache = kmem_cache_create("revoke_table", + sizeof(struct jbd2_revoke_table_s), 0, 0, NULL, NULL); - if (revoke_table_cache == 0) { - kmem_cache_destroy(revoke_record_cache); - revoke_record_cache = NULL; + if (jbd2_revoke_table_cache == 0) { + kmem_cache_destroy(jbd2_revoke_record_cache); + jbd2_revoke_record_cache = NULL; return -ENOMEM; } return 0; } -void journal_destroy_revoke_caches(void) +void jbd2_journal_destroy_revoke_caches(void) { - kmem_cache_destroy(revoke_record_cache); - revoke_record_cache = NULL; - kmem_cache_destroy(revoke_table_cache); - revoke_table_cache = NULL; + kmem_cache_destroy(jbd2_revoke_record_cache); + jbd2_revoke_record_cache = NULL; + kmem_cache_destroy(jbd2_revoke_table_cache); + jbd2_revoke_table_cache = NULL; } /* Initialise the revoke table for a given journal to a given size. */ -int journal_init_revoke(journal_t *journal, int hash_size) +int jbd2_journal_init_revoke(journal_t *journal, int hash_size) { int shift, tmp; @@ -206,7 +206,7 @@ int journal_init_revoke(journal_t *journal, int hash_size) while((tmp >>= 1UL) != 0UL) shift++; - journal->j_revoke_table[0] = kmem_cache_alloc(revoke_table_cache, GFP_KERNEL); + journal->j_revoke_table[0] = kmem_cache_alloc(jbd2_revoke_table_cache, GFP_KERNEL); if (!journal->j_revoke_table[0]) return -ENOMEM; journal->j_revoke = journal->j_revoke_table[0]; @@ -221,7 +221,7 @@ int journal_init_revoke(journal_t *journal, int hash_size) journal->j_revoke->hash_table = kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL); if (!journal->j_revoke->hash_table) { - kmem_cache_free(revoke_table_cache, journal->j_revoke_table[0]); + kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[0]); journal->j_revoke = NULL; return -ENOMEM; } @@ -229,10 +229,10 @@ int journal_init_revoke(journal_t *journal, int hash_size) for (tmp = 0; tmp < hash_size; tmp++) INIT_LIST_HEAD(&journal->j_revoke->hash_table[tmp]); - journal->j_revoke_table[1] = kmem_cache_alloc(revoke_table_cache, GFP_KERNEL); + journal->j_revoke_table[1] = kmem_cache_alloc(jbd2_revoke_table_cache, GFP_KERNEL); if (!journal->j_revoke_table[1]) { kfree(journal->j_revoke_table[0]->hash_table); - kmem_cache_free(revoke_table_cache, journal->j_revoke_table[0]); + kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[0]); return -ENOMEM; } @@ -249,8 +249,8 @@ int journal_init_revoke(journal_t *journal, int hash_size) kmalloc(hash_size * sizeof(struct list_head), GFP_KERNEL); if (!journal->j_revoke->hash_table) { kfree(journal->j_revoke_table[0]->hash_table); - kmem_cache_free(revoke_table_cache, journal->j_revoke_table[0]); - kmem_cache_free(revoke_table_cache, journal->j_revoke_table[1]); + kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[0]); + kmem_cache_free(jbd2_revoke_table_cache, journal->j_revoke_table[1]); journal->j_revoke = NULL; return -ENOMEM; } @@ -265,9 +265,9 @@ int journal_init_revoke(journal_t *journal, int hash_size) /* Destoy a journal's revoke table. The table must already be empty! */ -void journal_destroy_revoke(journal_t *journal) +void jbd2_journal_destroy_revoke(journal_t *journal) { - struct jbd_revoke_table_s *table; + struct jbd2_revoke_table_s *table; struct list_head *hash_list; int i; @@ -281,7 +281,7 @@ void journal_destroy_revoke(journal_t *journal) } kfree(table->hash_table); - kmem_cache_free(revoke_table_cache, table); + kmem_cache_free(jbd2_revoke_table_cache, table); journal->j_revoke = NULL; table = journal->j_revoke_table[1]; @@ -294,7 +294,7 @@ void journal_destroy_revoke(journal_t *journal) } kfree(table->hash_table); - kmem_cache_free(revoke_table_cache, table); + kmem_cache_free(jbd2_revoke_table_cache, table); journal->j_revoke = NULL; } @@ -302,7 +302,7 @@ void journal_destroy_revoke(journal_t *journal) #ifdef __KERNEL__ /* - * journal_revoke: revoke a given buffer_head from the journal. This + * jbd2_journal_revoke: revoke a given buffer_head from the journal. This * prevents the block from being replayed during recovery if we take a * crash after this current transaction commits. Any subsequent * metadata writes of the buffer in this transaction cancel the @@ -314,18 +314,18 @@ void journal_destroy_revoke(journal_t *journal) * revoke before clearing the block bitmap when we are deleting * metadata. * - * Revoke performs a journal_forget on any buffer_head passed in as a + * Revoke performs a jbd2_journal_forget on any buffer_head passed in as a * parameter, but does _not_ forget the buffer_head if the bh was only * found implicitly. * * bh_in may not be a journalled buffer - it may have come off * the hash tables without an attached journal_head. * - * If bh_in is non-zero, journal_revoke() will decrement its b_count + * If bh_in is non-zero, jbd2_journal_revoke() will decrement its b_count * by one. */ -int journal_revoke(handle_t *handle, unsigned long blocknr, +int jbd2_journal_revoke(handle_t *handle, unsigned long blocknr, struct buffer_head *bh_in) { struct buffer_head *bh = NULL; @@ -338,7 +338,7 @@ int journal_revoke(handle_t *handle, unsigned long blocknr, BUFFER_TRACE(bh_in, "enter"); journal = handle->h_transaction->t_journal; - if (!journal_set_features(journal, 0, 0, JFS_FEATURE_INCOMPAT_REVOKE)){ + if (!jbd2_journal_set_features(journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)){ J_ASSERT (!"Cannot set revoke feature!"); return -EINVAL; } @@ -386,8 +386,8 @@ int journal_revoke(handle_t *handle, unsigned long blocknr, set_buffer_revoked(bh); set_buffer_revokevalid(bh); if (bh_in) { - BUFFER_TRACE(bh_in, "call journal_forget"); - journal_forget(handle, bh_in); + BUFFER_TRACE(bh_in, "call jbd2_journal_forget"); + jbd2_journal_forget(handle, bh_in); } else { BUFFER_TRACE(bh, "call brelse"); __brelse(bh); @@ -403,7 +403,7 @@ int journal_revoke(handle_t *handle, unsigned long blocknr, /* * Cancel an outstanding revoke. For use only internally by the - * journaling code (called from journal_get_write_access). + * journaling code (called from jbd2_journal_get_write_access). * * We trust buffer_revoked() on the buffer if the buffer is already * being journaled: if there is no revoke pending on the buffer, then we @@ -418,9 +418,9 @@ int journal_revoke(handle_t *handle, unsigned long blocknr, * * The caller must have the journal locked. */ -int journal_cancel_revoke(handle_t *handle, struct journal_head *jh) +int jbd2_journal_cancel_revoke(handle_t *handle, struct journal_head *jh) { - struct jbd_revoke_record_s *record; + struct jbd2_revoke_record_s *record; journal_t *journal = handle->h_transaction->t_journal; int need_cancel; int did_revoke = 0; /* akpm: debug */ @@ -447,7 +447,7 @@ int journal_cancel_revoke(handle_t *handle, struct journal_head *jh) spin_lock(&journal->j_revoke_lock); list_del(&record->hash); spin_unlock(&journal->j_revoke_lock); - kmem_cache_free(revoke_record_cache, record); + kmem_cache_free(jbd2_revoke_record_cache, record); did_revoke = 1; } } @@ -478,7 +478,7 @@ int journal_cancel_revoke(handle_t *handle, struct journal_head *jh) * we do not want to suspend any processing until all revokes are * written -bzzz */ -void journal_switch_revoke_table(journal_t *journal) +void jbd2_journal_switch_revoke_table(journal_t *journal) { int i; @@ -498,12 +498,12 @@ void journal_switch_revoke_table(journal_t *journal) * Called with the journal lock held. */ -void journal_write_revoke_records(journal_t *journal, +void jbd2_journal_write_revoke_records(journal_t *journal, transaction_t *transaction) { struct journal_head *descriptor; - struct jbd_revoke_record_s *record; - struct jbd_revoke_table_s *revoke; + struct jbd2_revoke_record_s *record; + struct jbd2_revoke_table_s *revoke; struct list_head *hash_list; int i, offset, count; @@ -519,14 +519,14 @@ void journal_write_revoke_records(journal_t *journal, hash_list = &revoke->hash_table[i]; while (!list_empty(hash_list)) { - record = (struct jbd_revoke_record_s *) + record = (struct jbd2_revoke_record_s *) hash_list->next; write_one_revoke_record(journal, transaction, &descriptor, &offset, record); count++; list_del(&record->hash); - kmem_cache_free(revoke_record_cache, record); + kmem_cache_free(jbd2_revoke_record_cache, record); } } if (descriptor) @@ -543,7 +543,7 @@ static void write_one_revoke_record(journal_t *journal, transaction_t *transaction, struct journal_head **descriptorp, int *offsetp, - struct jbd_revoke_record_s *record) + struct jbd2_revoke_record_s *record) { struct journal_head *descriptor; int offset; @@ -551,7 +551,7 @@ static void write_one_revoke_record(journal_t *journal, /* If we are already aborting, this all becomes a noop. We still need to go round the loop in - journal_write_revoke_records in order to free all of the + jbd2_journal_write_revoke_records in order to free all of the revoke records: only the IO to the journal is omitted. */ if (is_journal_aborted(journal)) return; @@ -568,19 +568,19 @@ static void write_one_revoke_record(journal_t *journal, } if (!descriptor) { - descriptor = journal_get_descriptor_buffer(journal); + descriptor = jbd2_journal_get_descriptor_buffer(journal); if (!descriptor) return; header = (journal_header_t *) &jh2bh(descriptor)->b_data[0]; - header->h_magic = cpu_to_be32(JFS_MAGIC_NUMBER); - header->h_blocktype = cpu_to_be32(JFS_REVOKE_BLOCK); + header->h_magic = cpu_to_be32(JBD2_MAGIC_NUMBER); + header->h_blocktype = cpu_to_be32(JBD2_REVOKE_BLOCK); header->h_sequence = cpu_to_be32(transaction->t_tid); /* Record it so that we can wait for IO completion later */ JBUFFER_TRACE(descriptor, "file as BJ_LogCtl"); - journal_file_buffer(descriptor, transaction, BJ_LogCtl); + jbd2_journal_file_buffer(descriptor, transaction, BJ_LogCtl); - offset = sizeof(journal_revoke_header_t); + offset = sizeof(jbd2_journal_revoke_header_t); *descriptorp = descriptor; } @@ -601,7 +601,7 @@ static void flush_descriptor(journal_t *journal, struct journal_head *descriptor, int offset) { - journal_revoke_header_t *header; + jbd2_journal_revoke_header_t *header; struct buffer_head *bh = jh2bh(descriptor); if (is_journal_aborted(journal)) { @@ -609,7 +609,7 @@ static void flush_descriptor(journal_t *journal, return; } - header = (journal_revoke_header_t *) jh2bh(descriptor)->b_data; + header = (jbd2_journal_revoke_header_t *) jh2bh(descriptor)->b_data; header->r_count = cpu_to_be32(offset); set_buffer_jwrite(bh); BUFFER_TRACE(bh, "write"); @@ -640,11 +640,11 @@ static void flush_descriptor(journal_t *journal, * single block. */ -int journal_set_revoke(journal_t *journal, +int jbd2_journal_set_revoke(journal_t *journal, unsigned long blocknr, tid_t sequence) { - struct jbd_revoke_record_s *record; + struct jbd2_revoke_record_s *record; record = find_revoke_record(journal, blocknr); if (record) { @@ -664,11 +664,11 @@ int journal_set_revoke(journal_t *journal, * ones, but later transactions still need replayed. */ -int journal_test_revoke(journal_t *journal, +int jbd2_journal_test_revoke(journal_t *journal, unsigned long blocknr, tid_t sequence) { - struct jbd_revoke_record_s *record; + struct jbd2_revoke_record_s *record; record = find_revoke_record(journal, blocknr); if (!record) @@ -683,21 +683,21 @@ int journal_test_revoke(journal_t *journal, * that it can be reused by the running filesystem. */ -void journal_clear_revoke(journal_t *journal) +void jbd2_journal_clear_revoke(journal_t *journal) { int i; struct list_head *hash_list; - struct jbd_revoke_record_s *record; - struct jbd_revoke_table_s *revoke; + struct jbd2_revoke_record_s *record; + struct jbd2_revoke_table_s *revoke; revoke = journal->j_revoke; for (i = 0; i < revoke->hash_size; i++) { hash_list = &revoke->hash_table[i]; while (!list_empty(hash_list)) { - record = (struct jbd_revoke_record_s*) hash_list->next; + record = (struct jbd2_revoke_record_s*) hash_list->next; list_del(&record->hash); - kmem_cache_free(revoke_record_cache, record); + kmem_cache_free(jbd2_revoke_record_cache, record); } } } diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index e1b3c8af4d17..149957bef907 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -19,7 +19,7 @@ #include <linux/time.h> #include <linux/fs.h> -#include <linux/jbd.h> +#include <linux/jbd2.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/timer.h> @@ -28,7 +28,7 @@ #include <linux/highmem.h> /* - * get_transaction: obtain a new transaction_t object. + * jbd2_get_transaction: obtain a new transaction_t object. * * Simply allocate and initialise a new transaction. Create it in * RUNNING state and add it to the current journal (which should not @@ -44,7 +44,7 @@ */ static transaction_t * -get_transaction(journal_t *journal, transaction_t *transaction) +jbd2_get_transaction(journal_t *journal, transaction_t *transaction) { transaction->t_journal = journal; transaction->t_state = T_RUNNING; @@ -115,7 +115,7 @@ repeat: spin_lock(&journal->j_state_lock); repeat_locked: if (is_journal_aborted(journal) || - (journal->j_errno != 0 && !(journal->j_flags & JFS_ACK_ERR))) { + (journal->j_errno != 0 && !(journal->j_flags & JBD2_ACK_ERR))) { spin_unlock(&journal->j_state_lock); ret = -EROFS; goto out; @@ -134,7 +134,7 @@ repeat_locked: spin_unlock(&journal->j_state_lock); goto alloc_transaction; } - get_transaction(journal, new_transaction); + jbd2_get_transaction(journal, new_transaction); new_transaction = NULL; } @@ -175,7 +175,7 @@ repeat_locked: spin_unlock(&transaction->t_handle_lock); prepare_to_wait(&journal->j_wait_transaction_locked, &wait, TASK_UNINTERRUPTIBLE); - __log_start_commit(journal, transaction->t_tid); + __jbd2_log_start_commit(journal, transaction->t_tid); spin_unlock(&journal->j_state_lock); schedule(); finish_wait(&journal->j_wait_transaction_locked, &wait); @@ -205,12 +205,12 @@ repeat_locked: * committing_transaction->t_outstanding_credits plus "enough" for * the log control blocks. * Also, this test is inconsitent with the matching one in - * journal_extend(). + * jbd2_journal_extend(). */ - if (__log_space_left(journal) < jbd_space_needed(journal)) { + if (__jbd2_log_space_left(journal) < jbd_space_needed(journal)) { jbd_debug(2, "Handle %p waiting for checkpoint...\n", handle); spin_unlock(&transaction->t_handle_lock); - __log_wait_for_space(journal); + __jbd2_log_wait_for_space(journal); goto repeat_locked; } @@ -223,7 +223,7 @@ repeat_locked: transaction->t_handle_count++; jbd_debug(4, "Handle %p given %d credits (total %d, free %d)\n", handle, nblocks, transaction->t_outstanding_credits, - __log_space_left(journal)); + __jbd2_log_space_left(journal)); spin_unlock(&transaction->t_handle_lock); spin_unlock(&journal->j_state_lock); out: @@ -246,7 +246,7 @@ static handle_t *new_handle(int nblocks) } /** - * handle_t *journal_start() - Obtain a new handle. + * handle_t *jbd2_journal_start() - Obtain a new handle. * @journal: Journal to start transaction on. * @nblocks: number of block buffer we might modify * @@ -259,7 +259,7 @@ static handle_t *new_handle(int nblocks) * * Return a pointer to a newly allocated handle, or NULL on failure */ -handle_t *journal_start(journal_t *journal, int nblocks) +handle_t *jbd2_journal_start(journal_t *journal, int nblocks) { handle_t *handle = journal_current_handle(); int err; @@ -289,7 +289,7 @@ handle_t *journal_start(journal_t *journal, int nblocks) } /** - * int journal_extend() - extend buffer credits. + * int jbd2_journal_extend() - extend buffer credits. * @handle: handle to 'extend' * @nblocks: nr blocks to try to extend by. * @@ -298,7 +298,7 @@ handle_t *journal_start(journal_t *journal, int nblocks) * a credit for a number of buffer modications in advance, but can * extend its credit if it needs more. * - * journal_extend tries to give the running handle more buffer credits. + * jbd2_journal_extend tries to give the running handle more buffer credits. * It does not guarantee that allocation - this is a best-effort only. * The calling process MUST be able to deal cleanly with a failure to * extend here. @@ -308,7 +308,7 @@ handle_t *journal_start(journal_t *journal, int nblocks) * return code < 0 implies an error * return code > 0 implies normal transaction-full status. */ -int journal_extend(handle_t *handle, int nblocks) +int jbd2_journal_extend(handle_t *handle, int nblocks) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; @@ -339,7 +339,7 @@ int journal_extend(handle_t *handle, int nblocks) goto unlock; } - if (wanted > __log_space_left(journal)) { + if (wanted > __jbd2_log_space_left(journal)) { jbd_debug(3, "denied handle %p %d blocks: " "insufficient log space\n", handle, nblocks); goto unlock; @@ -360,21 +360,21 @@ out: /** - * int journal_restart() - restart a handle . + * int jbd2_journal_restart() - restart a handle . * @handle: handle to restart * @nblocks: nr credits requested * * Restart a handle for a multi-transaction filesystem * operation. * - * If the journal_extend() call above fails to grant new buffer credits - * to a running handle, a call to journal_restart will commit the + * If the jbd2_journal_extend() call above fails to grant new buffer credits + * to a running handle, a call to jbd2_journal_restart will commit the * handle's transaction so far and reattach the handle to a new * transaction capabable of guaranteeing the requested number of * credits. */ -int journal_restart(handle_t *handle, int nblocks) +int jbd2_journal_restart(handle_t *handle, int nblocks) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; @@ -402,7 +402,7 @@ int journal_restart(handle_t *handle, int nblocks) spin_unlock(&transaction->t_handle_lock); jbd_debug(2, "restarting handle %p\n", handle); - __log_start_commit(journal, transaction->t_tid); + __jbd2_log_start_commit(journal, transaction->t_tid); spin_unlock(&journal->j_state_lock); handle->h_buffer_credits = nblocks; @@ -412,7 +412,7 @@ int journal_restart(handle_t *handle, int nblocks) /** - * void journal_lock_updates () - establish a transaction barrier. + * void jbd2_journal_lock_updates () - establish a transaction barrier. * @journal: Journal to establish a barrier on. * * This locks out any further updates from being started, and blocks @@ -421,7 +421,7 @@ int journal_restart(handle_t *handle, int nblocks) * * The journal lock should not be held on entry. */ -void journal_lock_updates(journal_t *journal) +void jbd2_journal_lock_updates(journal_t *journal) { DEFINE_WAIT(wait); @@ -452,7 +452,7 @@ void journal_lock_updates(journal_t *journal) /* * We have now established a barrier against other normal updates, but - * we also need to barrier against other journal_lock_updates() calls + * we also need to barrier against other jbd2_journal_lock_updates() calls * to make sure that we serialise special journal-locked operations * too. */ @@ -460,14 +460,14 @@ void journal_lock_updates(journal_t *journal) } /** - * void journal_unlock_updates (journal_t* journal) - release barrier + * void jbd2_journal_unlock_updates (journal_t* journal) - release barrier * @journal: Journal to release the barrier on. * - * Release a transaction barrier obtained with journal_lock_updates(). + * Release a transaction barrier obtained with jbd2_journal_lock_updates(). * * Should be called without the journal lock held. */ -void journal_unlock_updates (journal_t *journal) +void jbd2_journal_unlock_updates (journal_t *journal) { J_ASSERT(journal->j_barrier_count != 0); @@ -667,7 +667,7 @@ repeat: JBUFFER_TRACE(jh, "allocate memory for buffer"); jbd_unlock_bh_state(bh); frozen_buffer = - jbd_slab_alloc(jh2bh(jh)->b_size, + jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS); if (!frozen_buffer) { printk(KERN_EMERG @@ -699,7 +699,7 @@ repeat: jh->b_transaction = transaction; JBUFFER_TRACE(jh, "file as BJ_Reserved"); spin_lock(&journal->j_list_lock); - __journal_file_buffer(jh, transaction, BJ_Reserved); + __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved); spin_unlock(&journal->j_list_lock); } @@ -723,18 +723,18 @@ done: * If we are about to journal a buffer, then any revoke pending on it is * no longer valid */ - journal_cancel_revoke(handle, jh); + jbd2_journal_cancel_revoke(handle, jh); out: if (unlikely(frozen_buffer)) /* It's usually NULL */ - jbd_slab_free(frozen_buffer, bh->b_size); + jbd2_slab_free(frozen_buffer, bh->b_size); JBUFFER_TRACE(jh, "exit"); return error; } /** - * int journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update. + * int jbd2_journal_get_write_access() - notify intent to modify a buffer for metadata (not data) update. * @handle: transaction to add buffer modifications to * @bh: bh to be used for metadata writes * @credits: variable that will receive credits for the buffer @@ -745,16 +745,16 @@ out: * because we're write()ing a buffer which is also part of a shared mapping. */ -int journal_get_write_access(handle_t *handle, struct buffer_head *bh) +int jbd2_journal_get_write_access(handle_t *handle, struct buffer_head *bh) { - struct journal_head *jh = journal_add_journal_head(bh); + struct journal_head *jh = jbd2_journal_add_journal_head(bh); int rc; /* We do not want to get caught playing with fields which the * log thread also manipulates. Make sure that the buffer * completes any outstanding IO before proceeding. */ rc = do_get_write_access(handle, jh, 0); - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); return rc; } @@ -772,17 +772,17 @@ int journal_get_write_access(handle_t *handle, struct buffer_head *bh) * unlocked buffer beforehand. */ /** - * int journal_get_create_access () - notify intent to use newly created bh + * int jbd2_journal_get_create_access () - notify intent to use newly created bh * @handle: transaction to new buffer to * @bh: new buffer. * * Call this if you create a new bh. */ -int journal_get_create_access(handle_t *handle, struct buffer_head *bh) +int jbd2_journal_get_create_access(handle_t *handle, struct buffer_head *bh) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; - struct journal_head *jh = journal_add_journal_head(bh); + struct journal_head *jh = jbd2_journal_add_journal_head(bh); int err; jbd_debug(5, "journal_head %p\n", jh); @@ -812,7 +812,7 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh) if (jh->b_transaction == NULL) { jh->b_transaction = transaction; JBUFFER_TRACE(jh, "file as BJ_Reserved"); - __journal_file_buffer(jh, transaction, BJ_Reserved); + __jbd2_journal_file_buffer(jh, transaction, BJ_Reserved); } else if (jh->b_transaction == journal->j_committing_transaction) { JBUFFER_TRACE(jh, "set next transaction"); jh->b_next_transaction = transaction; @@ -828,14 +828,14 @@ int journal_get_create_access(handle_t *handle, struct buffer_head *bh) * which hits an assertion error. */ JBUFFER_TRACE(jh, "cancelling revoke"); - journal_cancel_revoke(handle, jh); - journal_put_journal_head(jh); + jbd2_journal_cancel_revoke(handle, jh); + jbd2_journal_put_journal_head(jh); out: return err; } /** - * int journal_get_undo_access() - Notify intent to modify metadata with + * int jbd2_journal_get_undo_access() - Notify intent to modify metadata with * non-rewindable consequences * @handle: transaction * @bh: buffer to undo @@ -848,7 +848,7 @@ out: * since if we overwrote that space we would make the delete * un-rewindable in case of a crash. * - * To deal with that, journal_get_undo_access requests write access to a + * To deal with that, jbd2_journal_get_undo_access requests write access to a * buffer for parts of non-rewindable operations such as delete * operations on the bitmaps. The journaling code must keep a copy of * the buffer's contents prior to the undo_access call until such time @@ -861,10 +861,10 @@ out: * * Returns error number or 0 on success. */ -int journal_get_undo_access(handle_t *handle, struct buffer_head *bh) +int jbd2_journal_get_undo_access(handle_t *handle, struct buffer_head *bh) { int err; - struct journal_head *jh = journal_add_journal_head(bh); + struct journal_head *jh = jbd2_journal_add_journal_head(bh); char *committed_data = NULL; JBUFFER_TRACE(jh, "entry"); @@ -880,7 +880,7 @@ int journal_get_undo_access(handle_t *handle, struct buffer_head *bh) repeat: if (!jh->b_committed_data) { - committed_data = jbd_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS); + committed_data = jbd2_slab_alloc(jh2bh(jh)->b_size, GFP_NOFS); if (!committed_data) { printk(KERN_EMERG "%s: No memory for committed data\n", __FUNCTION__); @@ -905,14 +905,14 @@ repeat: } jbd_unlock_bh_state(bh); out: - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); if (unlikely(committed_data)) - jbd_slab_free(committed_data, bh->b_size); + jbd2_slab_free(committed_data, bh->b_size); return err; } /** - * int journal_dirty_data() - mark a buffer as containing dirty data which + * int jbd2_journal_dirty_data() - mark a buffer as containing dirty data which * needs to be flushed before we can commit the * current transaction. * @handle: transaction @@ -923,10 +923,10 @@ out: * * Returns error number or 0 on success. * - * journal_dirty_data() can be called via page_launder->ext3_writepage + * jbd2_journal_dirty_data() can be called via page_launder->ext3_writepage * by kswapd. */ -int journal_dirty_data(handle_t *handle, struct buffer_head *bh) +int jbd2_journal_dirty_data(handle_t *handle, struct buffer_head *bh) { journal_t *journal = handle->h_transaction->t_journal; int need_brelse = 0; @@ -935,7 +935,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh) if (is_handle_aborted(handle)) return 0; - jh = journal_add_journal_head(bh); + jh = jbd2_journal_add_journal_head(bh); JBUFFER_TRACE(jh, "entry"); /* @@ -984,7 +984,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh) * And while we're in that state, someone does a * writepage() in an attempt to pageout the same area * of the file via a shared mapping. At present that - * calls journal_dirty_data(), and we get right here. + * calls jbd2_journal_dirty_data(), and we get right here. * It may be too late to journal the data. Simply * falling through to the next test will suffice: the * data will be dirty and wil be checkpointed. The @@ -1035,7 +1035,7 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh) /* journal_clean_data_list() may have got there first */ if (jh->b_transaction != NULL) { JBUFFER_TRACE(jh, "unfile from commit"); - __journal_temp_unlink_buffer(jh); + __jbd2_journal_temp_unlink_buffer(jh); /* It still points to the committing * transaction; move it to this one so * that the refile assert checks are @@ -1054,15 +1054,15 @@ int journal_dirty_data(handle_t *handle, struct buffer_head *bh) if (jh->b_jlist != BJ_SyncData && jh->b_jlist != BJ_Locked) { JBUFFER_TRACE(jh, "not on correct data list: unfile"); J_ASSERT_JH(jh, jh->b_jlist != BJ_Shadow); - __journal_temp_unlink_buffer(jh); + __jbd2_journal_temp_unlink_buffer(jh); jh->b_transaction = handle->h_transaction; JBUFFER_TRACE(jh, "file as data"); - __journal_file_buffer(jh, handle->h_transaction, + __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_SyncData); } } else { JBUFFER_TRACE(jh, "not on a transaction"); - __journal_file_buffer(jh, handle->h_transaction, BJ_SyncData); + __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_SyncData); } no_journal: spin_unlock(&journal->j_list_lock); @@ -1072,12 +1072,12 @@ no_journal: __brelse(bh); } JBUFFER_TRACE(jh, "exit"); - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); return 0; } /** - * int journal_dirty_metadata() - mark a buffer as containing dirty metadata + * int jbd2_journal_dirty_metadata() - mark a buffer as containing dirty metadata * @handle: transaction to add buffer to. * @bh: buffer to mark * @@ -1095,7 +1095,7 @@ no_journal: * buffer: that only gets done when the old transaction finally * completes its commit. */ -int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) +int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; @@ -1156,7 +1156,7 @@ int journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) JBUFFER_TRACE(jh, "file as BJ_Metadata"); spin_lock(&journal->j_list_lock); - __journal_file_buffer(jh, handle->h_transaction, BJ_Metadata); + __jbd2_journal_file_buffer(jh, handle->h_transaction, BJ_Metadata); spin_unlock(&journal->j_list_lock); out_unlock_bh: jbd_unlock_bh_state(bh); @@ -1166,18 +1166,18 @@ out: } /* - * journal_release_buffer: undo a get_write_access without any buffer + * jbd2_journal_release_buffer: undo a get_write_access without any buffer * updates, if the update decided in the end that it didn't need access. * */ void -journal_release_buffer(handle_t *handle, struct buffer_head *bh) +jbd2_journal_release_buffer(handle_t *handle, struct buffer_head *bh) { BUFFER_TRACE(bh, "entry"); } /** - * void journal_forget() - bforget() for potentially-journaled buffers. + * void jbd2_journal_forget() - bforget() for potentially-journaled buffers. * @handle: transaction handle * @bh: bh to 'forget' * @@ -1193,7 +1193,7 @@ journal_release_buffer(handle_t *handle, struct buffer_head *bh) * Allow this call even if the handle has aborted --- it may be part of * the caller's cleanup after an abort. */ -int journal_forget (handle_t *handle, struct buffer_head *bh) +int jbd2_journal_forget (handle_t *handle, struct buffer_head *bh) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; @@ -1250,11 +1250,11 @@ int journal_forget (handle_t *handle, struct buffer_head *bh) */ if (jh->b_cp_transaction) { - __journal_temp_unlink_buffer(jh); - __journal_file_buffer(jh, transaction, BJ_Forget); + __jbd2_journal_temp_unlink_buffer(jh); + __jbd2_journal_file_buffer(jh, transaction, BJ_Forget); } else { - __journal_unfile_buffer(jh); - journal_remove_journal_head(bh); + __jbd2_journal_unfile_buffer(jh); + jbd2_journal_remove_journal_head(bh); __brelse(bh); if (!buffer_jbd(bh)) { spin_unlock(&journal->j_list_lock); @@ -1292,7 +1292,7 @@ drop: } /** - * int journal_stop() - complete a transaction + * int jbd2_journal_stop() - complete a transaction * @handle: tranaction to complete. * * All done for a particular handle. @@ -1302,12 +1302,12 @@ drop: * complication is that we need to start a commit operation if the * filesystem is marked for synchronous update. * - * journal_stop itself will not usually return an error, but it may + * jbd2_journal_stop itself will not usually return an error, but it may * do so in unusual circumstances. In particular, expect it to - * return -EIO if a journal_abort has been executed since the + * return -EIO if a jbd2_journal_abort has been executed since the * transaction began. */ -int journal_stop(handle_t *handle) +int jbd2_journal_stop(handle_t *handle) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; @@ -1383,15 +1383,15 @@ int journal_stop(handle_t *handle) jbd_debug(2, "transaction too old, requesting commit for " "handle %p\n", handle); /* This is non-blocking */ - __log_start_commit(journal, transaction->t_tid); + __jbd2_log_start_commit(journal, transaction->t_tid); spin_unlock(&journal->j_state_lock); /* - * Special case: JFS_SYNC synchronous updates require us + * Special case: JBD2_SYNC synchronous updates require us * to wait for the commit to complete. */ if (handle->h_sync && !(current->flags & PF_MEMALLOC)) - err = log_wait_commit(journal, tid); + err = jbd2_log_wait_commit(journal, tid); } else { spin_unlock(&transaction->t_handle_lock); spin_unlock(&journal->j_state_lock); @@ -1401,24 +1401,24 @@ int journal_stop(handle_t *handle) return err; } -/**int journal_force_commit() - force any uncommitted transactions +/**int jbd2_journal_force_commit() - force any uncommitted transactions * @journal: journal to force * * For synchronous operations: force any uncommitted transactions * to disk. May seem kludgy, but it reuses all the handle batching * code in a very simple manner. */ -int journal_force_commit(journal_t *journal) +int jbd2_journal_force_commit(journal_t *journal) { handle_t *handle; int ret; - handle = journal_start(journal, 1); + handle = jbd2_journal_start(journal, 1); if (IS_ERR(handle)) { ret = PTR_ERR(handle); } else { handle->h_sync = 1; - ret = journal_stop(handle); + ret = jbd2_journal_stop(handle); } return ret; } @@ -1486,7 +1486,7 @@ __blist_del_buffer(struct journal_head **list, struct journal_head *jh) * * Called under j_list_lock. The journal may not be locked. */ -void __journal_temp_unlink_buffer(struct journal_head *jh) +void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh) { struct journal_head **list = NULL; transaction_t *transaction; @@ -1538,23 +1538,23 @@ void __journal_temp_unlink_buffer(struct journal_head *jh) mark_buffer_dirty(bh); /* Expose it to the VM */ } -void __journal_unfile_buffer(struct journal_head *jh) +void __jbd2_journal_unfile_buffer(struct journal_head *jh) { - __journal_temp_unlink_buffer(jh); + __jbd2_journal_temp_unlink_buffer(jh); jh->b_transaction = NULL; } -void journal_unfile_buffer(journal_t *journal, struct journal_head *jh) +void jbd2_journal_unfile_buffer(journal_t *journal, struct journal_head *jh) { jbd_lock_bh_state(jh2bh(jh)); spin_lock(&journal->j_list_lock); - __journal_unfile_buffer(jh); + __jbd2_journal_unfile_buffer(jh); spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(jh2bh(jh)); } /* - * Called from journal_try_to_free_buffers(). + * Called from jbd2_journal_try_to_free_buffers(). * * Called under jbd_lock_bh_state(bh) */ @@ -1576,16 +1576,16 @@ __journal_try_to_free_buffer(journal_t *journal, struct buffer_head *bh) if (jh->b_jlist == BJ_SyncData || jh->b_jlist == BJ_Locked) { /* A written-back ordered data buffer */ JBUFFER_TRACE(jh, "release data"); - __journal_unfile_buffer(jh); - journal_remove_journal_head(bh); + __jbd2_journal_unfile_buffer(jh); + jbd2_journal_remove_journal_head(bh); __brelse(bh); } } else if (jh->b_cp_transaction != 0 && jh->b_transaction == 0) { /* written-back checkpointed metadata buffer */ if (jh->b_jlist == BJ_None) { JBUFFER_TRACE(jh, "remove from checkpoint list"); - __journal_remove_checkpoint(jh); - journal_remove_journal_head(bh); + __jbd2_journal_remove_checkpoint(jh); + jbd2_journal_remove_journal_head(bh); __brelse(bh); } } @@ -1596,7 +1596,7 @@ out: /** - * int journal_try_to_free_buffers() - try to free page buffers. + * int jbd2_journal_try_to_free_buffers() - try to free page buffers. * @journal: journal for operation * @page: to try and free * @unused_gfp_mask: unused @@ -1613,13 +1613,13 @@ out: * * This complicates JBD locking somewhat. We aren't protected by the * BKL here. We wish to remove the buffer from its committing or - * running transaction's ->t_datalist via __journal_unfile_buffer. + * running transaction's ->t_datalist via __jbd2_journal_unfile_buffer. * * This may *change* the value of transaction_t->t_datalist, so anyone * who looks at t_datalist needs to lock against this function. * - * Even worse, someone may be doing a journal_dirty_data on this - * buffer. So we need to lock against that. journal_dirty_data() + * Even worse, someone may be doing a jbd2_journal_dirty_data on this + * buffer. So we need to lock against that. jbd2_journal_dirty_data() * will come out of the lock with the buffer dirty, which makes it * ineligible for release here. * @@ -1629,7 +1629,7 @@ out: * cannot happen because we never reallocate freed data as metadata * while the data is part of a transaction. Yes? */ -int journal_try_to_free_buffers(journal_t *journal, +int jbd2_journal_try_to_free_buffers(journal_t *journal, struct page *page, gfp_t unused_gfp_mask) { struct buffer_head *head; @@ -1646,15 +1646,15 @@ int journal_try_to_free_buffers(journal_t *journal, /* * We take our own ref against the journal_head here to avoid * having to add tons of locking around each instance of - * journal_remove_journal_head() and journal_put_journal_head(). + * jbd2_journal_remove_journal_head() and jbd2_journal_put_journal_head(). */ - jh = journal_grab_journal_head(bh); + jh = jbd2_journal_grab_journal_head(bh); if (!jh) continue; jbd_lock_bh_state(bh); __journal_try_to_free_buffer(journal, bh); - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); jbd_unlock_bh_state(bh); if (buffer_jbd(bh)) goto busy; @@ -1681,23 +1681,23 @@ static int __dispose_buffer(struct journal_head *jh, transaction_t *transaction) int may_free = 1; struct buffer_head *bh = jh2bh(jh); - __journal_unfile_buffer(jh); + __jbd2_journal_unfile_buffer(jh); if (jh->b_cp_transaction) { JBUFFER_TRACE(jh, "on running+cp transaction"); - __journal_file_buffer(jh, transaction, BJ_Forget); + __jbd2_journal_file_buffer(jh, transaction, BJ_Forget); clear_buffer_jbddirty(bh); may_free = 0; } else { JBUFFER_TRACE(jh, "on running transaction"); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); __brelse(bh); } return may_free; } /* - * journal_invalidatepage + * jbd2_journal_invalidatepage * * This code is tricky. It has a number of cases to deal with. * @@ -1765,7 +1765,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh) jbd_lock_bh_state(bh); spin_lock(&journal->j_list_lock); - jh = journal_grab_journal_head(bh); + jh = jbd2_journal_grab_journal_head(bh); if (!jh) goto zap_buffer_no_jh; @@ -1796,7 +1796,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh) JBUFFER_TRACE(jh, "checkpointed: add to BJ_Forget"); ret = __dispose_buffer(jh, journal->j_running_transaction); - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); spin_unlock(&journal->j_state_lock); @@ -1810,7 +1810,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh) JBUFFER_TRACE(jh, "give to committing trans"); ret = __dispose_buffer(jh, journal->j_committing_transaction); - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); spin_unlock(&journal->j_state_lock); @@ -1844,7 +1844,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh) journal->j_running_transaction); jh->b_next_transaction = NULL; } - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); spin_unlock(&journal->j_state_lock); @@ -1861,7 +1861,7 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh) } zap_buffer: - journal_put_journal_head(jh); + jbd2_journal_put_journal_head(jh); zap_buffer_no_jh: spin_unlock(&journal->j_list_lock); jbd_unlock_bh_state(bh); @@ -1877,7 +1877,7 @@ zap_buffer_unlocked: } /** - * void journal_invalidatepage() + * void jbd2_journal_invalidatepage() * @journal: journal to use for flush... * @page: page to flush * @offset: length of page to invalidate. @@ -1885,7 +1885,7 @@ zap_buffer_unlocked: * Reap page buffers containing data after offset in page. * */ -void journal_invalidatepage(journal_t *journal, +void jbd2_journal_invalidatepage(journal_t *journal, struct page *page, unsigned long offset) { @@ -1927,7 +1927,7 @@ void journal_invalidatepage(journal_t *journal, /* * File a buffer on the given transaction list. */ -void __journal_file_buffer(struct journal_head *jh, +void __jbd2_journal_file_buffer(struct journal_head *jh, transaction_t *transaction, int jlist) { struct journal_head **list = NULL; @@ -1956,7 +1956,7 @@ void __journal_file_buffer(struct journal_head *jh, } if (jh->b_transaction) - __journal_temp_unlink_buffer(jh); + __jbd2_journal_temp_unlink_buffer(jh); jh->b_transaction = transaction; switch (jlist) { @@ -1998,12 +1998,12 @@ void __journal_file_buffer(struct journal_head *jh, set_buffer_jbddirty(bh); } -void journal_file_buffer(struct journal_head *jh, +void jbd2_journal_file_buffer(struct journal_head *jh, transaction_t *transaction, int jlist) { jbd_lock_bh_state(jh2bh(jh)); spin_lock(&transaction->t_journal->j_list_lock); - __journal_file_buffer(jh, transaction, jlist); + __jbd2_journal_file_buffer(jh, transaction, jlist); spin_unlock(&transaction->t_journal->j_list_lock); jbd_unlock_bh_state(jh2bh(jh)); } @@ -2018,7 +2018,7 @@ void journal_file_buffer(struct journal_head *jh, * * Called under jbd_lock_bh_state(jh2bh(jh)) */ -void __journal_refile_buffer(struct journal_head *jh) +void __jbd2_journal_refile_buffer(struct journal_head *jh) { int was_dirty; struct buffer_head *bh = jh2bh(jh); @@ -2029,7 +2029,7 @@ void __journal_refile_buffer(struct journal_head *jh) /* If the buffer is now unused, just drop it. */ if (jh->b_next_transaction == NULL) { - __journal_unfile_buffer(jh); + __jbd2_journal_unfile_buffer(jh); return; } @@ -2039,10 +2039,10 @@ void __journal_refile_buffer(struct journal_head *jh) */ was_dirty = test_clear_buffer_jbddirty(bh); - __journal_temp_unlink_buffer(jh); + __jbd2_journal_temp_unlink_buffer(jh); jh->b_transaction = jh->b_next_transaction; jh->b_next_transaction = NULL; - __journal_file_buffer(jh, jh->b_transaction, + __jbd2_journal_file_buffer(jh, jh->b_transaction, was_dirty ? BJ_Metadata : BJ_Reserved); J_ASSERT_JH(jh, jh->b_transaction->t_state == T_RUNNING); @@ -2054,26 +2054,26 @@ void __journal_refile_buffer(struct journal_head *jh) * For the unlocked version of this call, also make sure that any * hanging journal_head is cleaned up if necessary. * - * __journal_refile_buffer is usually called as part of a single locked + * __jbd2_journal_refile_buffer is usually called as part of a single locked * operation on a buffer_head, in which the caller is probably going to * be hooking the journal_head onto other lists. In that case it is up * to the caller to remove the journal_head if necessary. For the - * unlocked journal_refile_buffer call, the caller isn't going to be + * unlocked jbd2_journal_refile_buffer call, the caller isn't going to be * doing anything else to the buffer so we need to do the cleanup * ourselves to avoid a jh leak. * * *** The journal_head may be freed by this call! *** */ -void journal_refile_buffer(journal_t *journal, struct journal_head *jh) +void jbd2_journal_refile_buffer(journal_t *journal, struct journal_head *jh) { struct buffer_head *bh = jh2bh(jh); jbd_lock_bh_state(bh); spin_lock(&journal->j_list_lock); - __journal_refile_buffer(jh); + __jbd2_journal_refile_buffer(jh); jbd_unlock_bh_state(bh); - journal_remove_journal_head(bh); + jbd2_journal_remove_journal_head(bh); spin_unlock(&journal->j_list_lock); __brelse(bh); |