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authorLiu Bo2013-12-29 21:44:50 +0800
committerChris Mason2014-01-28 13:20:14 -0800
commit17504584f52af944960f1ad16752aa10a0755b3b (patch)
tree7428bce96d72e51705d9154b661e86a56236c7ac /fs
parent1708cc5723cb775703b42a0ce8e521019c42dd67 (diff)
Btrfs: return free space to global_rsv as much as possible
@full is not protected within global_rsv.lock, so we may think global_rsv is already full but in fact it's not, so we miss the opportunity to return free space to global_rsv directly when we release other block_rsvs. Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/extent-tree.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 3d19dcc553aa..41fe80b9db47 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4674,7 +4674,7 @@ void btrfs_block_rsv_release(struct btrfs_root *root,
u64 num_bytes)
{
struct btrfs_block_rsv *global_rsv = &root->fs_info->global_block_rsv;
- if (global_rsv->full || global_rsv == block_rsv ||
+ if (global_rsv == block_rsv ||
block_rsv->space_info != global_rsv->space_info)
global_rsv = NULL;
block_rsv_release_bytes(root->fs_info, block_rsv, global_rsv,