Author: mav
Date: Fri Jan 3 18:44:37 2014
New Revision: 260236
URL: http://svnweb.freebsd.org/changeset/base/260236
Log:
In dmu_zfetch_stream_reclaim() replace division with multiplication and
move it out of the loop and lock.
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c Fri Jan
3 18:36:19 2014 (r260235)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c Fri Jan
3 18:44:37 2014 (r260236)
@@ -604,14 +604,16 @@ static zstream_t *
dmu_zfetch_stream_reclaim(zfetch_t *zf)
{
zstream_t *zs;
+ clock_t ticks;
+ ticks = zfetch_min_sec_reap * hz;
if (! rw_tryenter(&zf->zf_rwlock, RW_WRITER))
return (0);
for (zs = list_head(&zf->zf_stream); zs;
zs = list_next(&zf->zf_stream, zs)) {
- if (((ddi_get_lbolt() - zs->zst_last)/hz) > zfetch_min_sec_reap)
+ if (ddi_get_lbolt() - zs->zst_last > ticks)
break;
}
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