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[v10,13/16] Btrfs: fix transactin abortion in __btrfs_free_extent

Message ID 1397101727-20806-14-git-send-email-bo.li.liu@oracle.com (mailing list archive)
State Under Review
Headers show

Commit Message

Liu Bo April 10, 2014, 3:48 a.m. UTC 
We need to reset @refs_to_drop to 1 when we're going to delete the last
special dedup reference, otherwise we can trigger (@refs < @refs_to_drop)
and end up with transaction abortion.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
---
 fs/btrfs/extent-tree.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4c1c342..1cb3ec5 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5931,6 +5931,7 @@  again:
 			btrfs_release_path(path);
 			root_objectid = BTRFS_DEDUP_TREE_OBJECTID;
 			parent = 0;
+			refs_to_drop = 1;
 
 			goto again;
 		}