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-rw-r--r--fs/btrfs/ctree.h6
-rw-r--r--fs/btrfs/extent-tree.c23
-rw-r--r--fs/btrfs/extent_io.h34
-rw-r--r--fs/btrfs/file.c12
-rw-r--r--fs/btrfs/inode-map.c4
-rw-r--r--fs/btrfs/inode.c18
-rw-r--r--fs/btrfs/ioctl.c5
-rw-r--r--fs/btrfs/qgroup.c51
-rw-r--r--fs/btrfs/qgroup.h3
-rw-r--r--fs/btrfs/relocation.c4
10 files changed, 119 insertions, 41 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 5e33e1d6d5c9..1ee4489dc398 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2708,8 +2708,9 @@ enum btrfs_flush_state {
COMMIT_TRANS = 6,
};
-int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len);
int btrfs_alloc_data_chunk_ondemand(struct btrfs_inode *inode, u64 bytes);
+int btrfs_check_data_free_space(struct inode *inode,
+ struct extent_changeset **reserved, u64 start, u64 len);
void btrfs_free_reserved_data_space(struct inode *inode, u64 start, u64 len);
void btrfs_free_reserved_data_space_noquota(struct inode *inode, u64 start,
u64 len);
@@ -2727,7 +2728,8 @@ void btrfs_subvolume_release_metadata(struct btrfs_fs_info *fs_info,
struct btrfs_block_rsv *rsv);
int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes);
void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes);
-int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len);
+int btrfs_delalloc_reserve_space(struct inode *inode,
+ struct extent_changeset **reserved, u64 start, u64 len);
void btrfs_delalloc_release_space(struct inode *inode, u64 start, u64 len);
void btrfs_init_block_rsv(struct btrfs_block_rsv *rsv, unsigned short type);
struct btrfs_block_rsv *btrfs_alloc_block_rsv(struct btrfs_fs_info *fs_info,
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index b0b02c6c71aa..70f85cfdbd46 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -3402,6 +3402,7 @@ static int cache_save_setup(struct btrfs_block_group_cache *block_group,
struct btrfs_fs_info *fs_info = block_group->fs_info;
struct btrfs_root *root = fs_info->tree_root;
struct inode *inode = NULL;
+ struct extent_changeset *data_reserved = NULL;
u64 alloc_hint = 0;
int dcs = BTRFS_DC_ERROR;
u64 num_pages = 0;
@@ -3521,7 +3522,7 @@ again:
num_pages *= 16;
num_pages *= PAGE_SIZE;
- ret = btrfs_check_data_free_space(inode, 0, num_pages);
+ ret = btrfs_check_data_free_space(inode, &data_reserved, 0, num_pages);
if (ret)
goto out_put;
@@ -3552,6 +3553,7 @@ out:
block_group->disk_cache_state = dcs;
spin_unlock(&block_group->lock);
+ extent_changeset_free(data_reserved);
return ret;
}
@@ -4326,12 +4328,8 @@ commit_trans:
return ret;
}
-/*
- * New check_data_free_space() with ability for precious data reservation
- * Will replace old btrfs_check_data_free_space(), but for patch split,
- * add a new function first and then replace it.
- */
-int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len)
+int btrfs_check_data_free_space(struct inode *inode,
+ struct extent_changeset **reserved, u64 start, u64 len)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
int ret;
@@ -4346,9 +4344,11 @@ int btrfs_check_data_free_space(struct inode *inode, u64 start, u64 len)
return ret;
/* Use new btrfs_qgroup_reserve_data to reserve precious data space. */
- ret = btrfs_qgroup_reserve_data(inode, start, len);
+ ret = btrfs_qgroup_reserve_data(inode, reserved, start, len);
if (ret < 0)
btrfs_free_reserved_data_space_noquota(inode, start, len);
+ else
+ ret = 0;
return ret;
}
@@ -6175,6 +6175,8 @@ void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes)
* @inode: inode we're writing to
* @start: start range we are writing to
* @len: how long the range we are writing to
+ * @reserved: mandatory parameter, record actually reserved qgroup ranges of
+ * current reservation.
*
* This will do the following things
*
@@ -6192,11 +6194,12 @@ void btrfs_delalloc_release_metadata(struct btrfs_inode *inode, u64 num_bytes)
* Return 0 for success
* Return <0 for error(-ENOSPC or -EQUOT)
*/
-int btrfs_delalloc_reserve_space(struct inode *inode, u64 start, u64 len)
+int btrfs_delalloc_reserve_space(struct inode *inode,
+ struct extent_changeset **reserved, u64 start, u64 len)
{
int ret;
- ret = btrfs_check_data_free_space(inode, start, len);
+ ret = btrfs_check_data_free_space(inode, reserved, start, len);
if (ret < 0)
return ret;
ret = btrfs_delalloc_reserve_metadata(BTRFS_I(inode), len);
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index ce670d213913..aeafdb35d90b 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -215,6 +215,40 @@ struct extent_changeset {
struct ulist range_changed;
};
+static inline void extent_changeset_init(struct extent_changeset *changeset)
+{
+ changeset->bytes_changed = 0;
+ ulist_init(&changeset->range_changed);
+}
+
+static inline struct extent_changeset *extent_changeset_alloc(void)
+{
+ struct extent_changeset *ret;
+
+ ret = kmalloc(sizeof(*ret), GFP_KERNEL);
+ if (!ret)
+ return NULL;
+
+ extent_changeset_init(ret);
+ return ret;
+}
+
+static inline void extent_changeset_release(struct extent_changeset *changeset)
+{
+ if (!changeset)
+ return;
+ changeset->bytes_changed = 0;
+ ulist_release(&changeset->range_changed);
+}
+
+static inline void extent_changeset_free(struct extent_changeset *changeset)
+{
+ if (!changeset)
+ return;
+ extent_changeset_release(changeset);
+ kfree(changeset);
+}
+
static inline void extent_set_compress_type(unsigned long *bio_flags,
int compress_type)
{
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 5da85b080368..1b5cce51728b 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1581,6 +1581,7 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
struct btrfs_root *root = BTRFS_I(inode)->root;
struct page **pages = NULL;
struct extent_state *cached_state = NULL;
+ struct extent_changeset *data_reserved = NULL;
u64 release_bytes = 0;
u64 lockstart;
u64 lockend;
@@ -1628,7 +1629,9 @@ static noinline ssize_t __btrfs_buffered_write(struct file *file,
reserve_bytes = round_up(write_bytes + sector_offset,
fs_info->sectorsize);
- ret = btrfs_check_data_free_space(inode, pos, write_bytes);
+ extent_changeset_release(data_reserved);
+ ret = btrfs_check_data_free_space(inode, &data_reserved, pos,
+ write_bytes);
if (ret < 0) {
if ((BTRFS_I(inode)->flags & (BTRFS_INODE_NODATACOW |
BTRFS_INODE_PREALLOC)) &&
@@ -1802,6 +1805,7 @@ again:
}
}
+ extent_changeset_free(data_reserved);
return num_written ? num_written : ret;
}
@@ -2772,6 +2776,7 @@ static long btrfs_fallocate(struct file *file, int mode,
{
struct inode *inode = file_inode(file);
struct extent_state *cached_state = NULL;
+ struct extent_changeset *data_reserved = NULL;
struct falloc_range *range;
struct falloc_range *tmp;
struct list_head reserve_list;
@@ -2901,8 +2906,8 @@ static long btrfs_fallocate(struct file *file, int mode,
free_extent_map(em);
break;
}
- ret = btrfs_qgroup_reserve_data(inode, cur_offset,
- last_byte - cur_offset);
+ ret = btrfs_qgroup_reserve_data(inode, &data_reserved,
+ cur_offset, last_byte - cur_offset);
if (ret < 0) {
free_extent_map(em);
break;
@@ -2974,6 +2979,7 @@ out:
if (ret != 0)
btrfs_free_reserved_data_space(inode, alloc_start,
alloc_end - cur_offset);
+ extent_changeset_free(data_reserved);
return ret;
}
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c
index 5c6c20ec64d8..d02019747d00 100644
--- a/fs/btrfs/inode-map.c
+++ b/fs/btrfs/inode-map.c
@@ -400,6 +400,7 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
struct btrfs_path *path;
struct inode *inode;
struct btrfs_block_rsv *rsv;
+ struct extent_changeset *data_reserved = NULL;
u64 num_bytes;
u64 alloc_hint = 0;
int ret;
@@ -492,7 +493,7 @@ again:
/* Just to make sure we have enough space */
prealloc += 8 * PAGE_SIZE;
- ret = btrfs_delalloc_reserve_space(inode, 0, prealloc);
+ ret = btrfs_delalloc_reserve_space(inode, &data_reserved, 0, prealloc);
if (ret)
goto out_put;
@@ -516,6 +517,7 @@ out:
trans->bytes_reserved = num_bytes;
btrfs_free_path(path);
+ extent_changeset_free(data_reserved);
return ret;
}
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index b66ea03a3a1c..d9cf6df40d5e 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -2037,6 +2037,7 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work)
struct btrfs_writepage_fixup *fixup;
struct btrfs_ordered_extent *ordered;
struct extent_state *cached_state = NULL;
+ struct extent_changeset *data_reserved = NULL;
struct page *page;
struct inode *inode;
u64 page_start;
@@ -2074,7 +2075,7 @@ again:
goto again;
}
- ret = btrfs_delalloc_reserve_space(inode, page_start,
+ ret = btrfs_delalloc_reserve_space(inode, &data_reserved, page_start,
PAGE_SIZE);
if (ret) {
mapping_set_error(page->mapping, ret);
@@ -2094,6 +2095,7 @@ out_page:
unlock_page(page);
put_page(page);
kfree(fixup);
+ extent_changeset_free(data_reserved);
}
/*
@@ -4769,6 +4771,7 @@ int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len,
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
struct btrfs_ordered_extent *ordered;
struct extent_state *cached_state = NULL;
+ struct extent_changeset *data_reserved = NULL;
char *kaddr;
u32 blocksize = fs_info->sectorsize;
pgoff_t index = from >> PAGE_SHIFT;
@@ -4783,7 +4786,7 @@ int btrfs_truncate_block(struct inode *inode, loff_t from, loff_t len,
(!len || ((len & (blocksize - 1)) == 0)))
goto out;
- ret = btrfs_delalloc_reserve_space(inode,
+ ret = btrfs_delalloc_reserve_space(inode, &data_reserved,
round_down(from, blocksize), blocksize);
if (ret)
goto out;
@@ -4868,6 +4871,7 @@ out_unlock:
unlock_page(page);
put_page(page);
out:
+ extent_changeset_free(data_reserved);
return ret;
}
@@ -8718,6 +8722,7 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
struct inode *inode = file->f_mapping->host;
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_dio_data dio_data = { 0 };
+ struct extent_changeset *data_reserved = NULL;
loff_t offset = iocb->ki_pos;
size_t count = 0;
int flags = 0;
@@ -8754,7 +8759,8 @@ static ssize_t btrfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
inode_unlock(inode);
relock = true;
}
- ret = btrfs_delalloc_reserve_space(inode, offset, count);
+ ret = btrfs_delalloc_reserve_space(inode, &data_reserved,
+ offset, count);
if (ret)
goto out;
dio_data.outstanding_extents = count_max_extents(count);
@@ -8811,6 +8817,7 @@ out:
if (relock)
inode_lock(inode);
+ extent_changeset_free(data_reserved);
return ret;
}
@@ -9043,6 +9050,7 @@ int btrfs_page_mkwrite(struct vm_fault *vmf)
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
struct btrfs_ordered_extent *ordered;
struct extent_state *cached_state = NULL;
+ struct extent_changeset *data_reserved = NULL;
char *kaddr;
unsigned long zero_start;
loff_t size;
@@ -9068,7 +9076,7 @@ int btrfs_page_mkwrite(struct vm_fault *vmf)
* end up waiting indefinitely to get a lock on the page currently
* being processed by btrfs_page_mkwrite() function.
*/
- ret = btrfs_delalloc_reserve_space(inode, page_start,
+ ret = btrfs_delalloc_reserve_space(inode, &data_reserved, page_start,
reserved_space);
if (!ret) {
ret = file_update_time(vmf->vma->vm_file);
@@ -9174,6 +9182,7 @@ again:
out_unlock:
if (!ret) {
sb_end_pagefault(inode->i_sb);
+ extent_changeset_free(data_reserved);
return VM_FAULT_LOCKED;
}
unlock_page(page);
@@ -9181,6 +9190,7 @@ out:
btrfs_delalloc_release_space(inode, page_start, reserved_space);
out_noreserve:
sb_end_pagefault(inode->i_sb);
+ extent_changeset_free(data_reserved);
return ret;
}
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index e4116f9248c2..ccee5417d3f6 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1127,6 +1127,7 @@ static int cluster_pages_for_defrag(struct inode *inode,
struct btrfs_ordered_extent *ordered;
struct extent_state *cached_state = NULL;
struct extent_io_tree *tree;
+ struct extent_changeset *data_reserved = NULL;
gfp_t mask = btrfs_alloc_write_mask(inode->i_mapping);
file_end = (isize - 1) >> PAGE_SHIFT;
@@ -1135,7 +1136,7 @@ static int cluster_pages_for_defrag(struct inode *inode,
page_cnt = min_t(u64, (u64)num_pages, (u64)file_end - start_index + 1);
- ret = btrfs_delalloc_reserve_space(inode,
+ ret = btrfs_delalloc_reserve_space(inode, &data_reserved,
start_index << PAGE_SHIFT,
page_cnt << PAGE_SHIFT);
if (ret)
@@ -1247,6 +1248,7 @@ again:
unlock_page(pages[i]);
put_page(pages[i]);
}
+ extent_changeset_free(data_reserved);
return i_done;
out:
for (i = 0; i < i_done; i++) {
@@ -1256,6 +1258,7 @@ out:
btrfs_delalloc_release_space(inode,
start_index << PAGE_SHIFT,
page_cnt << PAGE_SHIFT);
+ extent_changeset_free(data_reserved);
return ret;
}
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
index 475d53c492c8..002088937021 100644
--- a/fs/btrfs/qgroup.c
+++ b/fs/btrfs/qgroup.c
@@ -2835,43 +2835,60 @@ btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info)
* Return <0 for error (including -EQUOT)
*
* NOTE: this function may sleep for memory allocation.
+ * if btrfs_qgroup_reserve_data() is called multiple times with
+ * same @reserved, caller must ensure when error happens it's OK
+ * to free *ALL* reserved space.
*/
-int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len)
+int btrfs_qgroup_reserve_data(struct inode *inode,
+ struct extent_changeset **reserved_ret, u64 start,
+ u64 len)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
- struct extent_changeset changeset;
struct ulist_node *unode;
struct ulist_iterator uiter;
+ struct extent_changeset *reserved;
+ u64 orig_reserved;
+ u64 to_reserve;
int ret;
if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) ||
!is_fstree(root->objectid) || len == 0)
return 0;
- changeset.bytes_changed = 0;
- ulist_init(&changeset.range_changed);
+ /* @reserved parameter is mandatory for qgroup */
+ if (WARN_ON(!reserved_ret))
+ return -EINVAL;
+ if (!*reserved_ret) {
+ *reserved_ret = extent_changeset_alloc();
+ if (!*reserved_ret)
+ return -ENOMEM;
+ }
+ reserved = *reserved_ret;
+ /* Record already reserved space */
+ orig_reserved = reserved->bytes_changed;
ret = set_record_extent_bits(&BTRFS_I(inode)->io_tree, start,
- start + len -1, EXTENT_QGROUP_RESERVED, &changeset);
+ start + len -1, EXTENT_QGROUP_RESERVED, reserved);
+
+ /* Newly reserved space */
+ to_reserve = reserved->bytes_changed - orig_reserved;
trace_btrfs_qgroup_reserve_data(inode, start, len,
- changeset.bytes_changed,
- QGROUP_RESERVE);
+ to_reserve, QGROUP_RESERVE);
if (ret < 0)
goto cleanup;
- ret = qgroup_reserve(root, changeset.bytes_changed, true);
+ ret = qgroup_reserve(root, to_reserve, true);
if (ret < 0)
goto cleanup;
- ulist_release(&changeset.range_changed);
return ret;
cleanup:
- /* cleanup already reserved ranges */
+ /* cleanup *ALL* already reserved ranges */
ULIST_ITER_INIT(&uiter);
- while ((unode = ulist_next(&changeset.range_changed, &uiter)))
+ while ((unode = ulist_next(&reserved->range_changed, &uiter)))
clear_extent_bit(&BTRFS_I(inode)->io_tree, unode->val,
unode->aux, EXTENT_QGROUP_RESERVED, 0, 0, NULL,
GFP_NOFS);
- ulist_release(&changeset.range_changed);
+ extent_changeset_release(reserved);
return ret;
}
@@ -2882,8 +2899,7 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len,
int trace_op = QGROUP_RELEASE;
int ret;
- changeset.bytes_changed = 0;
- ulist_init(&changeset.range_changed);
+ extent_changeset_init(&changeset);
ret = clear_record_extent_bits(&BTRFS_I(inode)->io_tree, start,
start + len -1, EXTENT_QGROUP_RESERVED, &changeset);
if (ret < 0)
@@ -2899,7 +2915,7 @@ static int __btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len,
changeset.bytes_changed);
ret = changeset.bytes_changed;
out:
- ulist_release(&changeset.range_changed);
+ extent_changeset_release(&changeset);
return ret;
}
@@ -2999,8 +3015,7 @@ void btrfs_qgroup_check_reserved_leak(struct inode *inode)
struct ulist_iterator iter;
int ret;
- changeset.bytes_changed = 0;
- ulist_init(&changeset.range_changed);
+ extent_changeset_init(&changeset);
ret = clear_record_extent_bits(&BTRFS_I(inode)->io_tree, 0, (u64)-1,
EXTENT_QGROUP_RESERVED, &changeset);
@@ -3017,5 +3032,5 @@ void btrfs_qgroup_check_reserved_leak(struct inode *inode)
changeset.bytes_changed);
}
- ulist_release(&changeset.range_changed);
+ extent_changeset_release(&changeset);
}
diff --git a/fs/btrfs/qgroup.h b/fs/btrfs/qgroup.h
index d11125d6afb9..99408e93eb0d 100644
--- a/fs/btrfs/qgroup.h
+++ b/fs/btrfs/qgroup.h
@@ -242,7 +242,8 @@ int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid,
#endif
/* New io_tree based accurate qgroup reserve API */
-int btrfs_qgroup_reserve_data(struct inode *inode, u64 start, u64 len);
+int btrfs_qgroup_reserve_data(struct inode *inode,
+ struct extent_changeset **reserved, u64 start, u64 len);
int btrfs_qgroup_release_data(struct inode *inode, u64 start, u64 len);
int btrfs_qgroup_free_data(struct inode *inode, u64 start, u64 len);
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index b291d1bebb4c..6407423151ab 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3093,11 +3093,12 @@ int prealloc_file_extent_cluster(struct inode *inode,
u64 prealloc_start = cluster->start - offset;
u64 prealloc_end = cluster->end - offset;
u64 cur_offset;
+ struct extent_changeset *data_reserved = NULL;
BUG_ON(cluster->start != cluster->boundary[0]);
inode_lock(inode);
- ret = btrfs_check_data_free_space(inode, prealloc_start,
+ ret = btrfs_check_data_free_space(inode, &data_reserved, prealloc_start,
prealloc_end + 1 - prealloc_start);
if (ret)
goto out;
@@ -3129,6 +3130,7 @@ int prealloc_file_extent_cluster(struct inode *inode,
prealloc_end + 1 - cur_offset);
out:
inode_unlock(inode);
+ extent_changeset_free(data_reserved);
return ret;
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-11 17:33:40 +0000