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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>
This commit is contained in:
Johannes Thumshirn 2019-05-22 10:18:58 +02:00 committed by David Sterba
parent a94d1d0cb3
commit 5852c8b961
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/check-integrity.c
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@ -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))