svn commit: r307397 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs

[Ngie Cooper]

> On Oct 16, 2016, at 11:49, Alexander Motin <mav at FreeBSD.org> wrote:
> 
> Author: mav
> Date: Sun Oct 16 18:49:15 2016
> New Revision: 307397
> URL: https://svnweb.freebsd.org/changeset/base/307397
> 
> Log:
>  Add vfs.zfs.zil_log_limit sysctl.
> 
>  It is at least partially broken now, but that is another question.

How is it broken?
> Modified:
>  head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
> 
> Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c
> ==============================================================================
> --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c    Sun Oct 16 18:27:41 2016    (r307396)
> +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zil.c    Sun Oct 16 18:49:15 2016    (r307397)
> @@ -924,6 +924,8 @@ uint64_t zil_block_buckets[] = {
>  * Limit checking is disabled by setting zil_slog_limit to UINT64_MAX.
>  */
> uint64_t zil_slog_limit = 1024 * 1024;
> +SYSCTL_QUAD(_vfs_zfs, OID_AUTO, zil_slog_limit, CTLFLAG_RWTUN,
> +    &zil_slog_limit, 0, "Maximal commit size to use SLOG");
> #define    USE_SLOG(zilog) (((zilog)->zl_logbias == ZFS_LOGBIAS_LATENCY) && \
>    (((zilog)->zl_cur_used < zil_slog_limit) || \
>    ((zilog)->zl_itx_list_sz < (zil_slog_limit << 1))))
>