btrfs: raid56: Remove unused variable in lock_stripe_add

Variable 'walk' in lock_stripe_add() is not used.  Remove it.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c
index d2a9a1e..1571bf2 100644 (file)
--- a/fs/btrfs/raid56.c
+++ b/fs/btrfs/raid56.c
@@ -677,11 +677,9 @@ static noinline int lock_stripe_add(struct btrfs_raid_bio *rbio)
        struct btrfs_raid_bio *freeit = NULL;
        struct btrfs_raid_bio *cache_drop = NULL;
        int ret = 0;
-       int walk = 0;
 
        spin_lock_irqsave(&h->lock, flags);
        list_for_each_entry(cur, &h->hash_list, hash_list) {
-               walk++;
                if (cur->bbio->raid_map[0] == rbio->bbio->raid_map[0]) {
                        spin_lock(&cur->bio_list_lock);