From: Josef Bacik <[email protected]>

commit 8fca955057b9c58467d1b231e43f19c4cf26ae8c upstream.

If we have an error writing out a delalloc range in
btrfs_punch_hole_lock_range we'll unlock the inode and then goto
out_only_mutex, where we will again unlock the inode.  This is bad,
don't do this.

Fixes: f27451f22996 ("Btrfs: add support for fallocate's zero range operation")
CC: [email protected] # 4.19+
Reviewed-by: Filipe Manana <[email protected]>
Signed-off-by: Josef Bacik <[email protected]>
Reviewed-by: David Sterba <[email protected]>
Signed-off-by: David Sterba <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 fs/btrfs/file.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -2565,10 +2565,8 @@ static int btrfs_punch_hole(struct inode
 
        ret = btrfs_punch_hole_lock_range(inode, lockstart, lockend,
                                          &cached_state);
-       if (ret) {
-               inode_unlock(inode);
+       if (ret)
                goto out_only_mutex;
-       }
 
        path = btrfs_alloc_path();
        if (!path) {


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