diff options
Diffstat (limited to 'fs/ocfs2/alloc.c')
| -rw-r--r-- | fs/ocfs2/alloc.c | 76 |
1 files changed, 69 insertions, 7 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 96f8ca6b3aba..03438a677933 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -49,6 +49,7 @@ #include "super.h" #include "uptodate.h" #include "xattr.h" +#include "refcounttree.h" #include "buffer_head_io.h" @@ -6673,7 +6674,7 @@ out: */ static int ocfs2_trim_tree(struct inode *inode, struct ocfs2_path *path, handle_t *handle, struct ocfs2_truncate_context *tc, - u32 clusters_to_del, u64 *delete_start) + u32 clusters_to_del, u64 *delete_start, u8 *flags) { int ret, i, index = path->p_tree_depth; u32 new_edge = 0; @@ -6683,6 +6684,7 @@ static int ocfs2_trim_tree(struct inode *inode, struct ocfs2_path *path, struct ocfs2_extent_rec *rec; *delete_start = 0; + *flags = 0; while (index >= 0) { bh = path->p_node[index].bh; @@ -6770,6 +6772,7 @@ find_tail_record: *delete_start = le64_to_cpu(rec->e_blkno) + ocfs2_clusters_to_blocks(inode->i_sb, le16_to_cpu(rec->e_leaf_clusters)); + *flags = rec->e_flags; /* * If it's now empty, remove this record. @@ -6869,7 +6872,8 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb, struct buffer_head *fe_bh, handle_t *handle, struct ocfs2_truncate_context *tc, - struct ocfs2_path *path) + struct ocfs2_path *path, + struct ocfs2_alloc_context *meta_ac) { int status; struct ocfs2_dinode *fe; @@ -6877,6 +6881,7 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb, struct ocfs2_extent_list *el; struct buffer_head *last_eb_bh = NULL; u64 delete_blk = 0; + u8 rec_flags; fe = (struct ocfs2_dinode *) fe_bh->b_data; @@ -6932,7 +6937,7 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb, inode->i_blocks = ocfs2_inode_sector_count(inode); status = ocfs2_trim_tree(inode, path, handle, tc, - clusters_to_del, &delete_blk); + clusters_to_del, &delete_blk, &rec_flags); if (status) { mlog_errno(status); goto bail; @@ -6964,8 +6969,16 @@ static int ocfs2_do_truncate(struct ocfs2_super *osb, } if (delete_blk) { - status = ocfs2_truncate_log_append(osb, handle, delete_blk, - clusters_to_del); + if (rec_flags & OCFS2_EXT_REFCOUNTED) + status = ocfs2_decrease_refcount(inode, handle, + ocfs2_blocks_to_clusters(osb->sb, + delete_blk), + clusters_to_del, meta_ac, + &tc->tc_dealloc); + else + status = ocfs2_truncate_log_append(osb, handle, + delete_blk, + clusters_to_del); if (status < 0) { mlog_errno(status); goto bail; @@ -7383,11 +7396,14 @@ int ocfs2_commit_truncate(struct ocfs2_super *osb, { int status, i, credits, tl_sem = 0; u32 clusters_to_del, new_highest_cpos, range; + u64 blkno = 0; struct ocfs2_extent_list *el; handle_t *handle = NULL; struct inode *tl_inode = osb->osb_tl_inode; struct ocfs2_path *path = NULL; struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data; + struct ocfs2_alloc_context *meta_ac = NULL; + struct ocfs2_refcount_tree *ref_tree = NULL; mlog_entry_void(); @@ -7413,6 +7429,8 @@ start: goto bail; } + credits = 0; + /* * Truncate always works against the rightmost tree branch. */ @@ -7453,10 +7471,15 @@ start: clusters_to_del = 0; } else if (le32_to_cpu(el->l_recs[i].e_cpos) >= new_highest_cpos) { clusters_to_del = ocfs2_rec_clusters(el, &el->l_recs[i]); + blkno = le64_to_cpu(el->l_recs[i].e_blkno); } else if (range > new_highest_cpos) { clusters_to_del = (ocfs2_rec_clusters(el, &el->l_recs[i]) + le32_to_cpu(el->l_recs[i].e_cpos)) - new_highest_cpos; + blkno = le64_to_cpu(el->l_recs[i].e_blkno) + + ocfs2_clusters_to_blocks(inode->i_sb, + ocfs2_rec_clusters(el, &el->l_recs[i]) - + clusters_to_del); } else { status = 0; goto bail; @@ -7465,6 +7488,29 @@ start: mlog(0, "clusters_to_del = %u in this pass, tail blk=%llu\n", clusters_to_del, (unsigned long long)path_leaf_bh(path)->b_blocknr); + if (el->l_recs[i].e_flags & OCFS2_EXT_REFCOUNTED && clusters_to_del) { + BUG_ON(!(OCFS2_I(inode)->ip_dyn_features & + OCFS2_HAS_REFCOUNT_FL)); + + status = ocfs2_lock_refcount_tree(osb, + le64_to_cpu(di->i_refcount_loc), + 1, &ref_tree, NULL); + if (status) { + mlog_errno(status); + goto bail; + } + + status = ocfs2_prepare_refcount_change_for_del(inode, fe_bh, + blkno, + clusters_to_del, + &credits, + &meta_ac); + if (status < 0) { + mlog_errno(status); + goto bail; + } + } + mutex_lock(&tl_inode->i_mutex); tl_sem = 1; /* ocfs2_truncate_log_needs_flush guarantees us at least one @@ -7478,7 +7524,7 @@ start: } } - credits = ocfs2_calc_tree_trunc_credits(osb->sb, clusters_to_del, + credits += ocfs2_calc_tree_trunc_credits(osb->sb, clusters_to_del, (struct ocfs2_dinode *)fe_bh->b_data, el); handle = ocfs2_start_trans(osb, credits); @@ -7490,7 +7536,7 @@ start: } status = ocfs2_do_truncate(osb, clusters_to_del, inode, fe_bh, handle, - tc, path); + tc, path, meta_ac); if (status < 0) { mlog_errno(status); goto bail; @@ -7504,6 +7550,16 @@ start: ocfs2_reinit_path(path, 1); + if (meta_ac) { + ocfs2_free_alloc_context(meta_ac); + meta_ac = NULL; + } + + if (ref_tree) { + ocfs2_unlock_refcount_tree(osb, ref_tree, 1); + ref_tree = NULL; + } + /* * The check above will catch the case where we've truncated * away all allocation. @@ -7520,6 +7576,12 @@ bail: if (handle) ocfs2_commit_trans(osb, handle); + if (meta_ac) + ocfs2_free_alloc_context(meta_ac); + + if (ref_tree) + ocfs2_unlock_refcount_tree(osb, ref_tree, 1); + ocfs2_run_deallocs(osb, &tc->tc_dealloc); ocfs2_free_path(path); |