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btrfs: slightly simplify global block reserve calculations

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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;

Assign block_rsv->size to block_rsv->reserved directly and reorder lines
so they match the other branch.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2020-02-04 19:05:58 +08:00 committed by David Sterba
parent 56e9f6ea32
commit b82582d668
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/block-rsv.c
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@ -389,9 +389,9 @@ 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,