@cur_offset is not set back to what it should be (@cow_start) if
btrfs_next_leaf() returns something wrong, and the range [cow_start,
cur_offset) remains locked forever.
cc: <sta...@vger.kernel.org>
Signed-off-by: Liu Bo <bo.li....@oracle.com>
---
fs/btrfs/inode.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index ac1a1ac..281a250 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1332,8 +1332,11 @@ static noinline int run_delalloc_nocow(struct inode
*inode,
leaf = path->nodes[0];
if (path->slots[0] >= btrfs_header_nritems(leaf)) {
ret = btrfs_next_leaf(root, path);
- if (ret < 0)
+ if (ret < 0) {
+ if (cow_start != (u64)-1)
+ cur_offset = cow_start;
goto error;
+ }
if (ret > 0)
break;
leaf = path->nodes[0];
--
2.9.4
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