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| author | Johannes Thumshirn <jthumshirn@suse.de> | 2019-10-24 17:44:54 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-11-18 17:51:45 +0100 |
| commit | f5389f330d6f28d648c51624f059b0bfdd9b1806 (patch) | |
| tree | a995b50d287e8cfe172b2a68351522d06ccef889 /fs/btrfs/super.c | |
| parent | b3470b5dbe1300dea94191ae4b7d070be9a5cdc9 (diff) | |
| download | lwn-f5389f330d6f28d648c51624f059b0bfdd9b1806.tar.gz lwn-f5389f330d6f28d648c51624f059b0bfdd9b1806.zip | |
btrfs: remove cached space_info in btrfs_statfs()
In btrfs_statfs() we cache fs_info::space_info in a local variable only
to use it once in a list_for_each_rcu() statement.
Not only is the local variable unnecessary it even makes the code harder
to follow as it's not clear which list it is iterating.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 792bb0bc9a0b..3f49407cc2aa 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -2021,7 +2021,6 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct btrfs_fs_info *fs_info = btrfs_sb(dentry->d_sb); struct btrfs_super_block *disk_super = fs_info->super_copy; - struct list_head *head = &fs_info->space_info; struct btrfs_space_info *found; u64 total_used = 0; u64 total_free_data = 0; @@ -2035,7 +2034,7 @@ static int btrfs_statfs(struct dentry *dentry, struct kstatfs *buf) int mixed = 0; rcu_read_lock(); - list_for_each_entry_rcu(found, head, list) { + list_for_each_entry_rcu(found, &fs_info->space_info, list) { if (found->flags & BTRFS_BLOCK_GROUP_DATA) { int i; |