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/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/extent_io.c') diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 1eeba31b551d..d699f5d9b710 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2689,7 +2689,7 @@ blk_status_t btrfs_submit_read_repair(struct inode *inode, repair_bio->bi_private = failed_bio->bi_private; if (failed_io_bio->csum) { - const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy); + const u16 csum_size = fs_info->csum_size; repair_io_bio->csum = repair_io_bio->csum_inline; memcpy(repair_io_bio->csum, -- cgit v1.2.3