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| author | Jeff Mahoney <jeffm@suse.com> | 2016-12-20 21:28:27 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2017-01-03 17:14:08 +0300 |
| commit | aa7c8da35d1905d80e840d075f07d26ec90144b5 (patch) | |
| tree | d98c4cc3d44debbe6b75c9084b71f86a365c8669 /fs/btrfs/extent-tree.c | |
| parent | 73ba39ab9307340dc98ec3622891314bbc09cc2e (diff) | |
| download | linux-aa7c8da35d1905d80e840d075f07d26ec90144b5.tar.xz | |
btrfs: fix error handling when run_delayed_extent_op fails
In __btrfs_run_delayed_refs, the error path when run_delayed_extent_op
fails sets locked_ref->processing = 0 but doesn't re-increment
delayed_refs->num_heads_ready. As a result, we end up triggering
the WARN_ON in btrfs_select_ref_head.
Fixes: d7df2c796d7 (Btrfs: attach delayed ref updates to delayed ref heads)
Reported-by: Jon Nelson <jnelson-suse@jamponi.net>
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index e97302f437a1..5366e50c84c6 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2572,7 +2572,10 @@ static noinline int __btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, */ if (must_insert_reserved) locked_ref->must_insert_reserved = 1; + spin_lock(&delayed_refs->lock); locked_ref->processing = 0; + delayed_refs->num_heads_ready++; + spin_unlock(&delayed_refs->lock); btrfs_debug(fs_info, "run_delayed_extent_op returned %d", ret); |