Author: smh Date: Thu Mar 21 09:34:41 2013 New Revision: 248572 URL: http://svnweb.freebsd.org/changeset/base/248572
Log: Add TRIM support for L2ARC. This adds TRIM support to cache vdevs. When ARC buffers are removed from the L2ARC in arc_hdr_destroy(), arc_release() or l2arc_evict(), the size previously occupied by the buffer gets scheduled for TRIMming. As always, actual TRIMs are only issued to the L2ARC after txg_trim_limit. Reviewed by: pjd (mentor) Approved by: pjd (mentor) Obtained from: https://github.com/dechamps/zfs/commit/31aae373994fd112256607edba7de2359da3e9dc MFC after: 2 weeks Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/trim_map.h head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/trim_map.c head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Thu Mar 21 08:38:03 2013 (r248571) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Thu Mar 21 09:34:41 2013 (r248572) @@ -130,6 +130,7 @@ #endif #include <sys/callb.h> #include <sys/kstat.h> +#include <sys/trim_map.h> #include <zfs_fletcher.h> #include <sys/sdt.h> @@ -1691,6 +1692,8 @@ arc_hdr_destroy(arc_buf_hdr_t *hdr) } if (l2hdr != NULL) { + trim_map_free(l2hdr->b_dev->l2ad_vdev, l2hdr->b_daddr, + hdr->b_size); list_remove(l2hdr->b_dev->l2ad_buflist, hdr); ARCSTAT_INCR(arcstat_l2_size, -hdr->b_size); kmem_free(l2hdr, sizeof (l2arc_buf_hdr_t)); @@ -3528,6 +3531,8 @@ arc_release(arc_buf_t *buf, void *tag) buf->b_private = NULL; if (l2hdr) { + trim_map_free(l2hdr->b_dev->l2ad_vdev, l2hdr->b_daddr, + hdr->b_size); list_remove(l2hdr->b_dev->l2ad_buflist, hdr); kmem_free(l2hdr, sizeof (l2arc_buf_hdr_t)); ARCSTAT_INCR(arcstat_l2_size, -buf_size); @@ -4442,6 +4447,8 @@ l2arc_write_done(zio_t *zio) list_remove(buflist, ab); abl2 = ab->b_l2hdr; ab->b_l2hdr = NULL; + trim_map_free(abl2->b_dev->l2ad_vdev, abl2->b_daddr, + ab->b_size); kmem_free(abl2, sizeof (l2arc_buf_hdr_t)); ARCSTAT_INCR(arcstat_l2_size, -ab->b_size); } Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/trim_map.h ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/trim_map.h Thu Mar 21 08:38:03 2013 (r248571) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/trim_map.h Thu Mar 21 09:34:41 2013 (r248572) @@ -36,7 +36,7 @@ extern "C" { extern void trim_map_create(vdev_t *vd); extern void trim_map_destroy(vdev_t *vd); -extern void trim_map_free(zio_t *zio); +extern void trim_map_free(vdev_t *vd, uint64_t offset, uint64_t size); extern boolean_t trim_map_write_start(zio_t *zio); extern void trim_map_write_done(zio_t *zio); Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/trim_map.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/trim_map.c Thu Mar 21 08:38:03 2013 (r248571) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/trim_map.c Thu Mar 21 09:34:41 2013 (r248572) @@ -36,8 +36,8 @@ * than it would otherwise be as well as ensuring that entire * blocks are invalidated by writes. */ -#define TRIM_ZIO_END(zio) ((zio)->io_offset + \ - P2ROUNDUP((zio)->io_size, 1ULL << (zio)->io_vd->vdev_top->vdev_ashift)) +#define TRIM_ZIO_END(vd, offset, size) (offset + \ + P2ROUNDUP(size, 1ULL << vd->vdev_top->vdev_ashift)) typedef struct trim_map { list_t tm_head; /* List of segments sorted by txg. */ @@ -272,16 +272,15 @@ trim_map_free_locked(trim_map_t *tm, uin } void -trim_map_free(zio_t *zio) +trim_map_free(vdev_t *vd, uint64_t offset, uint64_t size) { - vdev_t *vd = zio->io_vd; trim_map_t *tm = vd->vdev_trimmap; if (zfs_notrim || vd->vdev_notrim || tm == NULL) return; mutex_enter(&tm->tm_lock); - trim_map_free_locked(tm, zio->io_offset, TRIM_ZIO_END(zio), + trim_map_free_locked(tm, offset, TRIM_ZIO_END(vd, offset, size), vd->vdev_spa->spa_syncing_txg); mutex_exit(&tm->tm_lock); } @@ -299,7 +298,7 @@ trim_map_write_start(zio_t *zio) return (B_TRUE); start = zio->io_offset; - end = TRIM_ZIO_END(zio); + end = TRIM_ZIO_END(zio->io_vd, start, zio->io_size); tsearch.ts_start = start; tsearch.ts_end = end; Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Thu Mar 21 08:38:03 2013 (r248571) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c Thu Mar 21 09:34:41 2013 (r248572) @@ -2475,7 +2475,7 @@ zio_vdev_io_start(zio_t *zio) } if (vd->vdev_ops->vdev_op_leaf && zio->io_type == ZIO_TYPE_FREE) { - trim_map_free(zio); + trim_map_free(vd, zio->io_offset, zio->io_size); return (ZIO_PIPELINE_CONTINUE); } _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
