From 55fc29bed8ddb4c3848ecf8cf7133e34c946f223 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Tue, 30 Jun 2020 02:01:31 +0200 Subject: btrfs: use cached value of fs_info::csum_size everywhere btrfs_get_16 shows up in the system performance profiles (helper to read 16bit values from on-disk structures). This is partially because of the checksum size that's frequently read along with data reads/writes, other u16 uses are from item size or directory entries. Replace all calls to btrfs_super_csum_size by the cached value from fs_info. Reviewed-by: Johannes Thumshirn Reviewed-by: Qu Wenruo Signed-off-by: David Sterba --- fs/btrfs/ordered-data.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/ordered-data.h') diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index c3a2325e64a4..4662fd8ca546 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -137,7 +137,7 @@ static inline int btrfs_ordered_sum_size(struct btrfs_fs_info *fs_info, unsigned long bytes) { int num_sectors = (int)DIV_ROUND_UP(bytes, fs_info->sectorsize); - int csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; return sizeof(struct btrfs_ordered_sum) + num_sectors * csum_size; } -- cgit 1.4.1