btrfs: Print Warning only if ENOSPC_DEBUG is enabled

Dont print warning for ENOSPC error unless ENOSPC_DEBUG is enabled. Use
btrfs_debug if it is enabled.

Signed-off-by: Ashish Samant <ashish.samant@oracle.com>
[ preserve the WARN_ON ]
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index a20d541bb190..6cef0062f929 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -650,9 +650,14 @@ static int btrfs_delayed_inode_reserve_metadata(
                         goto out;
 
                 ret = btrfs_block_rsv_migrate(src_rsv, dst_rsv, num_bytes);
-                if (!WARN_ON(ret))
+                if (!ret)
                         goto out;
 
+                if (btrfs_test_opt(root, ENOSPC_DEBUG)) {
+                        btrfs_debug(root->fs_info,
+                                    "block rsv migrate returned %d", ret);
+                        WARN_ON(1);
+                }
                 /*
                  * Ok this is a problem, let's just steal from the global rsv
                  * since this really shouldn't happen that often.