Liu Bo
2011-Sep-08 09:13 UTC
[PATCH] Btrfs: reset to appropriate block rsv after orphan operations
While truncating free space cache, we forget to change trans->block_rsv
back to the original one, but leave it with the orphan_block_rsv, and
then with option inode_cache enable, it leads to countless warnings of
btrfs_alloc_free_block and btrfs_orphan_commit_root:
WARNING: at fs/btrfs/extent-tree.c:5711 btrfs_alloc_free_block+0x180/0x350
[btrfs]()
...
WARNING: at fs/btrfs/inode.c:2193 btrfs_orphan_commit_root+0xb0/0xc0 [btrfs]()
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
---
fs/btrfs/free-space-cache.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 6a265b9..41ac927 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -190,9 +190,11 @@ int btrfs_truncate_free_space_cache(struct btrfs_root
*root,
struct btrfs_path *path,
struct inode *inode)
{
+ struct btrfs_block_rsv *rsv;
loff_t oldsize;
int ret = 0;
+ rsv = trans->block_rsv;
trans->block_rsv = root->orphan_block_rsv;
ret = btrfs_block_rsv_check(trans, root,
root->orphan_block_rsv,
@@ -210,6 +212,8 @@ int btrfs_truncate_free_space_cache(struct btrfs_root *root,
*/
ret = btrfs_truncate_inode_items(trans, root, inode,
0, BTRFS_EXTENT_DATA_KEY);
+
+ trans->block_rsv = rsv;
if (ret) {
WARN_ON(1);
return ret;
--
1.6.5.2
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