Date: Wed, 1 May 2013 17:34:44 +0000 (UTC) From: Davide Italiano <davide@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r250149 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201305011734.r41HYi7u038946@svn.freebsd.org>
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Author: davide Date: Wed May 1 17:34:44 2013 New Revision: 250149 URL: http://svnweb.freebsd.org/changeset/base/250149 Log: In case ZFS doesn't use UMA for buffers there's no need to waste memory creating zones that will remain empty. Reviewed by: pjd Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Wed May 1 17:29:42 2013 (r250148) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Wed May 1 17:34:44 2013 (r250149) @@ -154,6 +154,8 @@ zio_init(void) sizeof (zio_t), 0, NULL, NULL, NULL, NULL, NULL, 0); zio_link_cache = kmem_cache_create("zio_link_cache", sizeof (zio_link_t), 0, NULL, NULL, NULL, NULL, NULL, 0); + if (!zio_use_uma) + goto out; /* * For small buffers, we want a cache for each multiple of @@ -217,6 +219,7 @@ zio_init(void) if (zio_data_buf_cache[c - 1] == NULL) zio_data_buf_cache[c - 1] = zio_data_buf_cache[c]; } +out: /* * The zio write taskqs have 1 thread per cpu, allow 1/2 of the taskqs
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