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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