Date: Fri, 3 Jan 2014 18:44:37 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r260236 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201401031844.s03Iibbt090407@svn.freebsd.org>
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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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