In dmu_zfetch_stream_reclaim() replace division with multiplication and

move it out of the loop and lock.

This commit is contained in:

Alexander Motin

2014-01-03 18:44:37 +00:00

parent 9fa0eb8b8f

commit ce05e707c4

1 changed files with 3 additions and 1 deletions

									
										sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_zfetch.c
									
		+3
		-1
	
												View File
												
				@@ -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;

					}