[PATCH] btrfs: scrub: return EAGAIN when fs is closing

[David Sterba <dsterba@xxxxxxxx>]

The error code used here is wrong as it's not invalid to try to start
scrub when umount has begun.  Returning EAGAIN is more user friendly as
it's recoverable.

Signed-off-by: David Sterba <dsterba@xxxxxxxx>
---
 fs/btrfs/scrub.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index a99588536c79..ed471ffbf115 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -3791,7 +3791,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start,
 	struct btrfs_workqueue *scrub_parity = NULL;
 
 	if (btrfs_fs_closing(fs_info))
-		return -EINVAL;
+		return -EAGAIN;
 
 	if (fs_info->nodesize > BTRFS_STRIPE_LEN) {
 		/*
-- 
2.20.1