From 4bb3c2e2b5bb0d57f7d11f2da829357c5ca628a4 Mon Sep 17 00:00:00 2001 From: Johannes Thumshirn Date: Wed, 22 May 2019 10:19:00 +0200 Subject: [PATCH] btrfs: use btrfs_crc32c{,_final}() in for free space cache The CRC checksum in the free space cache is not dependant on the super block's csum_type field but always a CRC32C. So use btrfs_crc32c() and btrfs_crc32c_final() instead of btrfs_csum_data() and btrfs_csum_final() for computing these checksums. Reviewed-by: Nikolay Borisov Signed-off-by: Johannes Thumshirn Reviewed-by: David Sterba Signed-off-by: David Sterba --- fs/btrfs/free-space-cache.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index db53ac88e159..6814fa42eba3 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -465,9 +465,8 @@ static void io_ctl_set_crc(struct btrfs_io_ctl *io_ctl, int index) if (index == 0) offset = sizeof(u32) * io_ctl->num_pages; - crc = btrfs_csum_data(io_ctl->orig + offset, crc, - PAGE_SIZE - offset); - btrfs_csum_final(crc, (u8 *)&crc); + crc = btrfs_crc32c(crc, io_ctl->orig + offset, PAGE_SIZE - offset); + btrfs_crc32c_final(crc, (u8 *)&crc); io_ctl_unmap_page(io_ctl); tmp = page_address(io_ctl->pages[0]); tmp += index; @@ -493,9 +492,8 @@ static int io_ctl_check_crc(struct btrfs_io_ctl *io_ctl, int index) val = *tmp; io_ctl_map_page(io_ctl, 0); - crc = btrfs_csum_data(io_ctl->orig + offset, crc, - PAGE_SIZE - offset); - btrfs_csum_final(crc, (u8 *)&crc); + crc = btrfs_crc32c(crc, io_ctl->orig + offset, PAGE_SIZE - offset); + btrfs_crc32c_final(crc, (u8 *)&crc); if (val != crc) { btrfs_err_rl(io_ctl->fs_info, "csum mismatch on free space cache"); -- GitLab