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Subject[PATCH 3.12 165/181] Btrfs: output warning instead of error when loading free space cache failed
From: Miao Xie <>

3.12-stable review patch. If anyone has any objections, please let me know.


commit 32d6b47fe6fc1714d5f1bba1b9f38e0ab0ad58a8 upstream.

If we fail to load a free space cache, we can rebuild it from the extent tree,
so it is not a serious error, we should not output a error message that
would make the users uncomfortable. This patch uses warning message instead
of it.

Signed-off-by: Miao Xie <>
Signed-off-by: Chris Mason <>
Signed-off-by: Jiri Slaby <>
fs/btrfs/free-space-cache.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index b4f9904c4c6b..5467f84560fe 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -832,7 +832,7 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info,

if (!matched) {
- btrfs_err(fs_info, "block group %llu has wrong amount of free space",
+ btrfs_warn(fs_info, "block group %llu has wrong amount of free space",
ret = -1;
@@ -844,7 +844,7 @@ out:
ret = 0;

- btrfs_err(fs_info, "failed to load free space cache for block group %llu",
+ btrfs_warn(fs_info, "failed to load free space cache for block group %llu, rebuild it now",


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