Commit 5852c8b9 authored May 22, 2019 by Johannes Thumshirn Committed by David Sterba Jul 01, 2019

btrfs: use btrfs_csum_data() instead of directly calling crc32c



btrfsic_test_for_metadata() directly calls the crc32c() library function
for calculating the CRC32C checksum, but then uses btrfs_csum_final() to
invert the result.

To ease further refactoring and development around checksumming in BTRFS
convert to calling btrfs_csum_data(), which is a wrapper around
crc32c().

Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

parent a94d1d0c

fs/btrfs/check-integrity.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1728,7 +1728,7 @@ static int btrfsic_test_for_metadata(struct btrfsic_state *state,
		size_t sublen = i ? PAGE_SIZE :
		(PAGE_SIZE - BTRFS_CSUM_SIZE);

		crc = crc32c(crc, data, sublen);
		crc = btrfs_csum_data(data, crc, sublen);
		}
		btrfs_csum_final(crc, csum);
		if (memcmp(csum, h->csum, state->csum_size))