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xfs: fix endianness error when checking log block crc on big endian platforms 

Since the checksum function and the field are both __le32, don't
perform endian conversion when comparing the two.  This fixes mount
failures on ppc64.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Darrick J. Wong 2016-02-08 11:03:58 +11:00 committed by root
parent 36f90b0a2d
commit 8e0bd4925b
1 changed files with 2 additions and 2 deletions
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4
fs/xfs/xfs_log_recover.c
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@ -4491,7 +4491,7 @@ xlog_recover_process(
* know precisely what failed.
*/
if (pass == XLOG_RECOVER_CRCPASS) {
if (rhead->h_crc && crc != le32_to_cpu(rhead->h_crc))
if (rhead->h_crc && crc != rhead->h_crc)
return -EFSBADCRC;
return 0;
}
@ -4502,7 +4502,7 @@ xlog_recover_process(
* zero CRC check prevents warnings from being emitted when upgrading
* the kernel from one that does not add CRCs by default.
*/
if (crc != le32_to_cpu(rhead->h_crc)) {
if (crc != rhead->h_crc) {
if (rhead->h_crc || xfs_sb_version_hascrc(&log->l_mp->m_sb)) {
xfs_alert(log->l_mp,
"log record CRC mismatch: found 0x%x, expected 0x%x.",