Re: [PATCH v2 7/8] xfs: Add xfs_log_rlimit.[c|h]

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On 05/17/2013 05:40 AM, Jeff Liu wrote:
Hi Michael,

Are you compiling kernel on 32-bit system?

Yes, this is a 32-bit Pentium 4 system.

Looks this issue is regarding 64-bit division at roundup() on 32-bit if so.

Could you please try below fix?

diff --git a/fs/xfs/xfs_log_rlimit.c b/fs/xfs/xfs_log_rlimit.c
index 3e84d46..49a88cc 100644
--- a/fs/xfs/xfs_log_rlimit.c
+++ b/fs/xfs/xfs_log_rlimit.c
@@ -127,7 +127,7 @@ xfs_log_validate_logspace(
          * Also, the log size should be a multiple of the log stripe unit, round
          * it up to lsunit boundary if lsunit is specified.
          */
-       minlblks = lsunit ? (roundup(BTOBB(maxlres), lsunit) + 2 * lsunit) * 2 :
+       minlblks = lsunit ? (roundup((int)BTOBB(maxlres), lsunit) + 2 * lsunit) * 2 :
                             BTOBB(maxlres) * 2;

         if (log->l_logBBsize < minlblks) {


Thanks,
-Jeff

This code works, and my sysadmin-hack use of "const" was not needed after all. If you use Dave's suggestion to use roundup_64(), I'll be happy to apply another patch.

Thanks!

Michael

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