[PATCH] btrfs: remove the useless value assignment in block_rsv_release_bytes

[xiakaixu1987]

From: Kaixu Xia <kaixu...@tencent.com>

The variable qgroup_to_release is overwritten by the following if/else
statement before it is used, so this assignment is useless. Remove it.

Reported-by: Tosk Robot <tencent_os_ro...@tencent.com>
Signed-off-by: Kaixu Xia <kaixu...@tencent.com>
---
 fs/btrfs/block-rsv.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/fs/btrfs/block-rsv.c b/fs/btrfs/block-rsv.c
index bc920afe23bf..8638327069b7 100644
--- a/fs/btrfs/block-rsv.c
+++ b/fs/btrfs/block-rsv.c
@@ -109,10 +109,8 @@ static u64 block_rsv_release_bytes(struct btrfs_fs_info 
*fs_info,
        u64 ret;
 
        spin_lock(&block_rsv->lock);
-       if (num_bytes == (u64)-1) {
+       if (num_bytes == (u64)-1)
                num_bytes = block_rsv->size;
-               qgroup_to_release = block_rsv->qgroup_rsv_size;
-       }
        block_rsv->size -= num_bytes;
        if (block_rsv->reserved >= block_rsv->size) {
                num_bytes = block_rsv->reserved - block_rsv->size;
-- 
2.20.0