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MFC r260236:

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In dmu_zfetch_stream_reclaim() replace division with multiplication and
move it out of the loop and lock.
This commit is contained in:
mav 2014-02-18 14:56:44 +00:00
parent c9f2fff1da
commit afa027f3f5
1 changed files with 3 additions and 1 deletions
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4
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c
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@ -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;
}