xfs: Fix 64-bit division on 32-bit in xlog_state_switch_iclogs()

mainline-inclusion
from mainline-v5.13-rc4
commit 18842e0a
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I4KIAO
CVE: NA

Reference:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=18842e0a4f48564bbed541947abd8131fd0e9734

-------------------------------------------------

On 32-bit (e.g. m68k):

    ERROR: modpost: "__udivdi3" [fs/xfs/xfs.ko] undefined!

Fix this by using a uint32_t intermediate, like before.

Reported-by: noreply@ellerman.id.au
Fixes: 7660a5b48fbef958 ("xfs: log stripe roundoff is a property of the log")
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: NDave Chinner <dchinner@redhat.com>
Reviewed-by: NDarrick J. Wong <djwong@kernel.org>
Signed-off-by: NDarrick J. Wong <djwong@kernel.org>
Signed-off-by: NGuo Xuenan <guoxuenan@huawei.com>
Reviewed-by: NLihong Kou <koulihong@huawei.com>
Reviewed-by: NZhang Yi <yi.zhang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

fs/xfs/xfs_log.c

@@ -3065,8 +3065,8 @@ xlog_state_switch_iclogs(
 
 	/* Round up to next log-sunit */
 	if (log->l_iclog_roundoff > BBSIZE) {
-		log->l_curr_block = roundup(log->l_curr_block,
-						BTOBB(log->l_iclog_roundoff));
+		uint32_t sunit_bb = BTOBB(log->l_iclog_roundoff);
+		log->l_curr_block = roundup(log->l_curr_block, sunit_bb);
 	}
 
 	if (log->l_curr_block >= log->l_logBBsize) {