[PATCH] btrfs: drop math for block_reserved which is block_rsv size

[Anand Jain <anand.jain@xxxxxxxxxx>]

In btrfs_update_global_block_rsv the lines
  num_bytes = block_rsv->size - block_rsv->reserved;
  block_rsv->reserved += num_bytes;
imply
  block_rsv->reserved = block_rsv->size;

Just assign block_rsv->size to block_rsv->reserved instead of the math.

Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx>
---
 fs/btrfs/block-rsv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/block-rsv.c b/fs/btrfs/block-rsv.c
index 6dacde9a7e93..62e0885c1e5d 100644
--- a/fs/btrfs/block-rsv.c
+++ b/fs/btrfs/block-rsv.c
@@ -304,9 +304,9 @@ void btrfs_update_global_block_rsv(struct btrfs_fs_info *fs_info)
 
 	if (block_rsv->reserved < block_rsv->size) {
 		num_bytes = block_rsv->size - block_rsv->reserved;
-		block_rsv->reserved += num_bytes;
 		btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
 						      num_bytes);
+		block_rsv->reserved = block_rsv->size;
 	} else if (block_rsv->reserved > block_rsv->size) {
 		num_bytes = block_rsv->reserved - block_rsv->size;
 		btrfs_space_info_update_bytes_may_use(fs_info, sinfo,
-- 
1.8.3.1