In case of an ENOSPC error from btrfs_relocate_chunk() (line 2202) while
relocating a block group with offset 0 we end up endlessly looping.
This happens because key.offset -= 1 statement then unconditionally
brings us back to the beginnig of the loop (key.offset == (u64)-1).
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
---
fs/btrfs/volumes.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index dd13eb8..0cb94ce 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -2212,7 +2212,8 @@ again:
goto done;
if (ret == -ENOSPC)
failed++;
- key.offset -= 1;
+ if (--key.offset == -1)
+ break;
}
if (failed && !retried) {
--
1.7.2.3
--
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