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-rw-r--r--sys/fs/nandfs/nandfs_cleaner.c622
1 files changed, 0 insertions, 622 deletions
diff --git a/sys/fs/nandfs/nandfs_cleaner.c b/sys/fs/nandfs/nandfs_cleaner.c
deleted file mode 100644
index 3241c8701bfc..000000000000
--- a/sys/fs/nandfs/nandfs_cleaner.c
+++ /dev/null
@@ -1,622 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
- *
- * Copyright (c) 2010-2012 Semihalf.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/conf.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mount.h>
-#include <sys/mutex.h>
-#include <sys/buf.h>
-#include <sys/namei.h>
-#include <sys/vnode.h>
-#include <sys/bio.h>
-
-#include <fs/nandfs/nandfs_mount.h>
-#include <fs/nandfs/nandfs.h>
-#include <fs/nandfs/nandfs_subr.h>
-
-#define NANDFS_CLEANER_KILL 1
-
-static void nandfs_cleaner(struct nandfs_device *);
-static int nandfs_cleaner_clean_segments(struct nandfs_device *,
- struct nandfs_vinfo *, uint32_t, struct nandfs_period *, uint32_t,
- struct nandfs_bdesc *, uint32_t, uint64_t *, uint32_t);
-
-static int
-nandfs_process_bdesc(struct nandfs_device *nffsdev, struct nandfs_bdesc *bd,
- uint64_t nmembs);
-
-static void
-nandfs_wakeup_wait_cleaner(struct nandfs_device *fsdev, int reason)
-{
-
- mtx_lock(&fsdev->nd_clean_mtx);
- if (reason == NANDFS_CLEANER_KILL)
- fsdev->nd_cleaner_exit = 1;
- if (fsdev->nd_cleaning == 0) {
- fsdev->nd_cleaning = 1;
- wakeup(&fsdev->nd_cleaning);
- }
- cv_wait(&fsdev->nd_clean_cv, &fsdev->nd_clean_mtx);
- mtx_unlock(&fsdev->nd_clean_mtx);
-}
-
-int
-nandfs_start_cleaner(struct nandfs_device *fsdev)
-{
- int error;
-
- MPASS(fsdev->nd_cleaner == NULL);
-
- fsdev->nd_cleaner_exit = 0;
-
- error = kthread_add((void(*)(void *))nandfs_cleaner, fsdev, NULL,
- &fsdev->nd_cleaner, 0, 0, "nandfs_cleaner");
- if (error)
- printf("nandfs: could not start cleaner: %d\n", error);
-
- return (error);
-}
-
-int
-nandfs_stop_cleaner(struct nandfs_device *fsdev)
-{
-
- MPASS(fsdev->nd_cleaner != NULL);
- nandfs_wakeup_wait_cleaner(fsdev, NANDFS_CLEANER_KILL);
- fsdev->nd_cleaner = NULL;
-
- DPRINTF(CLEAN, ("cleaner stopped\n"));
- return (0);
-}
-
-static int
-nandfs_cleaner_finished(struct nandfs_device *fsdev)
-{
- int exit;
-
- mtx_lock(&fsdev->nd_clean_mtx);
- fsdev->nd_cleaning = 0;
- if (!fsdev->nd_cleaner_exit) {
- DPRINTF(CLEAN, ("%s: sleep\n", __func__));
- msleep(&fsdev->nd_cleaning, &fsdev->nd_clean_mtx, PRIBIO, "-",
- hz * nandfs_cleaner_interval);
- }
- exit = fsdev->nd_cleaner_exit;
- cv_broadcast(&fsdev->nd_clean_cv);
- mtx_unlock(&fsdev->nd_clean_mtx);
- if (exit) {
- DPRINTF(CLEAN, ("%s: no longer active\n", __func__));
- return (1);
- }
-
- return (0);
-}
-
-static void
-print_suinfo(struct nandfs_suinfo *suinfo, int nsegs)
-{
- int i;
-
- for (i = 0; i < nsegs; i++) {
- DPRINTF(CLEAN, ("%jx %jd %c%c%c %10u\n",
- suinfo[i].nsi_num, suinfo[i].nsi_lastmod,
- (suinfo[i].nsi_flags &
- (NANDFS_SEGMENT_USAGE_ACTIVE) ? 'a' : '-'),
- (suinfo[i].nsi_flags &
- (NANDFS_SEGMENT_USAGE_DIRTY) ? 'd' : '-'),
- (suinfo[i].nsi_flags &
- (NANDFS_SEGMENT_USAGE_ERROR) ? 'e' : '-'),
- suinfo[i].nsi_blocks));
- }
-}
-
-static int
-nandfs_cleaner_vblock_is_alive(struct nandfs_device *fsdev,
- struct nandfs_vinfo *vinfo, struct nandfs_cpinfo *cp, uint32_t ncps)
-{
- int64_t idx, min, max;
-
- if (vinfo->nvi_end >= fsdev->nd_last_cno)
- return (1);
-
- if (ncps == 0)
- return (0);
-
- if (vinfo->nvi_end < cp[0].nci_cno ||
- vinfo->nvi_start > cp[ncps - 1].nci_cno)
- return (0);
-
- idx = min = 0;
- max = ncps - 1;
- while (min <= max) {
- idx = (min + max) / 2;
- if (vinfo->nvi_start == cp[idx].nci_cno)
- return (1);
- if (vinfo->nvi_start < cp[idx].nci_cno)
- max = idx - 1;
- else
- min = idx + 1;
- }
-
- return (vinfo->nvi_end >= cp[idx].nci_cno);
-}
-
-static void
-nandfs_cleaner_vinfo_mark_alive(struct nandfs_device *fsdev,
- struct nandfs_vinfo *vinfo, uint32_t nmembs, struct nandfs_cpinfo *cp,
- uint32_t ncps)
-{
- uint32_t i;
-
- for (i = 0; i < nmembs; i++)
- vinfo[i].nvi_alive =
- nandfs_cleaner_vblock_is_alive(fsdev, &vinfo[i], cp, ncps);
-}
-
-static int
-nandfs_cleaner_bdesc_is_alive(struct nandfs_device *fsdev,
- struct nandfs_bdesc *bdesc)
-{
- int alive;
-
- alive = bdesc->bd_oblocknr == bdesc->bd_blocknr;
- if (!alive)
- MPASS(abs(bdesc->bd_oblocknr - bdesc->bd_blocknr) > 2);
-
- return (alive);
-}
-
-static void
-nandfs_cleaner_bdesc_mark_alive(struct nandfs_device *fsdev,
- struct nandfs_bdesc *bdesc, uint32_t nmembs)
-{
- uint32_t i;
-
- for (i = 0; i < nmembs; i++)
- bdesc[i].bd_alive = nandfs_cleaner_bdesc_is_alive(fsdev,
- &bdesc[i]);
-}
-
-static void
-nandfs_cleaner_iterate_psegment(struct nandfs_device *fsdev,
- struct nandfs_segment_summary *segsum, union nandfs_binfo *binfo,
- nandfs_daddr_t blk, struct nandfs_vinfo **vipp, struct nandfs_bdesc **bdpp)
-{
- int i;
-
- DPRINTF(CLEAN, ("%s nbinfos %x\n", __func__, segsum->ss_nbinfos));
- for (i = 0; i < segsum->ss_nbinfos; i++) {
- if (binfo[i].bi_v.bi_ino == NANDFS_DAT_INO) {
- (*bdpp)->bd_oblocknr = blk + segsum->ss_nblocks -
- segsum->ss_nbinfos + i;
- /*
- * XXX Hack
- */
- if (segsum->ss_flags & NANDFS_SS_SR)
- (*bdpp)->bd_oblocknr--;
- (*bdpp)->bd_level = binfo[i].bi_dat.bi_level;
- (*bdpp)->bd_offset = binfo[i].bi_dat.bi_blkoff;
- (*bdpp)++;
- } else {
- (*vipp)->nvi_ino = binfo[i].bi_v.bi_ino;
- (*vipp)->nvi_vblocknr = binfo[i].bi_v.bi_vblocknr;
- (*vipp)++;
- }
- }
-}
-
-static int
-nandfs_cleaner_iterate_segment(struct nandfs_device *fsdev, uint64_t segno,
- struct nandfs_vinfo **vipp, struct nandfs_bdesc **bdpp, int *select)
-{
- struct nandfs_segment_summary *segsum;
- union nandfs_binfo *binfo;
- struct buf *bp;
- uint32_t nblocks;
- nandfs_daddr_t curr, start, end;
- int error = 0;
-
- nandfs_get_segment_range(fsdev, segno, &start, &end);
-
- DPRINTF(CLEAN, ("%s: segno %jx start %jx end %jx\n", __func__, segno,
- start, end));
-
- *select = 0;
-
- for (curr = start; curr < end; curr += nblocks) {
- error = nandfs_dev_bread(fsdev, curr, NOCRED, 0, &bp);
- if (error) {
- brelse(bp);
- nandfs_error("%s: couldn't load segment summary of %jx: %d\n",
- __func__, segno, error);
- return (error);
- }
-
- segsum = (struct nandfs_segment_summary *)bp->b_data;
- binfo = (union nandfs_binfo *)(bp->b_data + segsum->ss_bytes);
-
- if (!nandfs_segsum_valid(segsum)) {
- brelse(bp);
- nandfs_error("nandfs: invalid summary of segment %jx\n", segno);
- return (error);
- }
-
- DPRINTF(CLEAN, ("%s: %jx magic %x bytes %x nblocks %x nbinfos "
- "%x\n", __func__, segno, segsum->ss_magic, segsum->ss_bytes,
- segsum->ss_nblocks, segsum->ss_nbinfos));
-
- nandfs_cleaner_iterate_psegment(fsdev, segsum, binfo, curr,
- vipp, bdpp);
- nblocks = segsum->ss_nblocks;
- brelse(bp);
- }
-
- if (error == 0)
- *select = 1;
-
- return (error);
-}
-
-static int
-nandfs_cleaner_choose_segment(struct nandfs_device *fsdev, uint64_t **segpp,
- uint64_t nsegs, uint64_t *rseg)
-{
- struct nandfs_suinfo *suinfo;
- uint64_t i, ssegs;
- int error;
-
- suinfo = malloc(sizeof(*suinfo) * nsegs, M_NANDFSTEMP,
- M_ZERO | M_WAITOK);
-
- if (*rseg >= fsdev->nd_fsdata.f_nsegments)
- *rseg = 0;
-
-retry:
- error = nandfs_get_segment_info_filter(fsdev, suinfo, nsegs, *rseg,
- &ssegs, NANDFS_SEGMENT_USAGE_DIRTY,
- NANDFS_SEGMENT_USAGE_ACTIVE | NANDFS_SEGMENT_USAGE_ERROR |
- NANDFS_SEGMENT_USAGE_GC);
- if (error) {
- nandfs_error("%s:%d", __FILE__, __LINE__);
- goto out;
- }
- if (ssegs == 0 && *rseg != 0) {
- *rseg = 0;
- goto retry;
- }
- if (ssegs > 0) {
- print_suinfo(suinfo, ssegs);
-
- for (i = 0; i < ssegs; i++) {
- (**segpp) = suinfo[i].nsi_num;
- (*segpp)++;
- }
- *rseg = suinfo[i - 1].nsi_num + 1;
- }
-
-out:
- free(suinfo, M_NANDFSTEMP);
- return (error);
-}
-
-static int
-nandfs_cleaner_body(struct nandfs_device *fsdev, uint64_t *rseg)
-{
- struct nandfs_vinfo *vinfo, *vip, *vipi;
- struct nandfs_bdesc *bdesc, *bdp, *bdpi;
- struct nandfs_cpstat cpstat;
- struct nandfs_cpinfo *cpinfo = NULL;
- uint64_t *segnums, *segp;
- int select, selected;
- int error = 0;
- int nsegs;
- int i;
-
- nsegs = nandfs_cleaner_segments;
-
- vip = vinfo = malloc(sizeof(*vinfo) *
- fsdev->nd_fsdata.f_blocks_per_segment * nsegs, M_NANDFSTEMP,
- M_ZERO | M_WAITOK);
- bdp = bdesc = malloc(sizeof(*bdesc) *
- fsdev->nd_fsdata.f_blocks_per_segment * nsegs, M_NANDFSTEMP,
- M_ZERO | M_WAITOK);
- segp = segnums = malloc(sizeof(*segnums) * nsegs, M_NANDFSTEMP,
- M_WAITOK);
-
- error = nandfs_cleaner_choose_segment(fsdev, &segp, nsegs, rseg);
- if (error) {
- nandfs_error("%s:%d", __FILE__, __LINE__);
- goto out;
- }
-
- if (segnums == segp)
- goto out;
-
- selected = 0;
- for (i = 0; i < segp - segnums; i++) {
- error = nandfs_cleaner_iterate_segment(fsdev, segnums[i], &vip,
- &bdp, &select);
- if (error) {
- /*
- * XXX deselect (see below)?
- */
- goto out;
- }
- if (!select)
- segnums[i] = NANDFS_NOSEGMENT;
- else {
- error = nandfs_markgc_segment(fsdev, segnums[i]);
- if (error) {
- nandfs_error("%s:%d\n", __FILE__, __LINE__);
- goto out;
- }
- selected++;
- }
- }
-
- if (selected == 0) {
- MPASS(vinfo == vip);
- MPASS(bdesc == bdp);
- goto out;
- }
-
- error = nandfs_get_cpstat(fsdev->nd_cp_node, &cpstat);
- if (error) {
- nandfs_error("%s:%d\n", __FILE__, __LINE__);
- goto out;
- }
-
- if (cpstat.ncp_nss != 0) {
- cpinfo = malloc(sizeof(struct nandfs_cpinfo) * cpstat.ncp_nss,
- M_NANDFSTEMP, M_WAITOK);
- error = nandfs_get_cpinfo(fsdev->nd_cp_node, 1, NANDFS_SNAPSHOT,
- cpinfo, cpstat.ncp_nss, NULL);
- if (error) {
- nandfs_error("%s:%d\n", __FILE__, __LINE__);
- goto out_locked;
- }
- }
-
- NANDFS_WRITELOCK(fsdev);
- DPRINTF(CLEAN, ("%s: got lock\n", __func__));
-
- error = nandfs_get_dat_vinfo(fsdev, vinfo, vip - vinfo);
- if (error) {
- nandfs_error("%s:%d\n", __FILE__, __LINE__);
- goto out_locked;
- }
-
- nandfs_cleaner_vinfo_mark_alive(fsdev, vinfo, vip - vinfo, cpinfo,
- cpstat.ncp_nss);
-
- error = nandfs_get_dat_bdescs(fsdev, bdesc, bdp - bdesc);
- if (error) {
- nandfs_error("%s:%d\n", __FILE__, __LINE__);
- goto out_locked;
- }
-
- nandfs_cleaner_bdesc_mark_alive(fsdev, bdesc, bdp - bdesc);
-
- DPRINTF(CLEAN, ("got:\n"));
- for (vipi = vinfo; vipi < vip; vipi++) {
- DPRINTF(CLEAN, ("v ino %jx vblocknr %jx start %jx end %jx "
- "alive %d\n", vipi->nvi_ino, vipi->nvi_vblocknr,
- vipi->nvi_start, vipi->nvi_end, vipi->nvi_alive));
- }
- for (bdpi = bdesc; bdpi < bdp; bdpi++) {
- DPRINTF(CLEAN, ("b oblocknr %jx blocknr %jx offset %jx "
- "alive %d\n", bdpi->bd_oblocknr, bdpi->bd_blocknr,
- bdpi->bd_offset, bdpi->bd_alive));
- }
- DPRINTF(CLEAN, ("end list\n"));
-
- error = nandfs_cleaner_clean_segments(fsdev, vinfo, vip - vinfo, NULL,
- 0, bdesc, bdp - bdesc, segnums, segp - segnums);
- if (error)
- nandfs_error("%s:%d\n", __FILE__, __LINE__);
-
-out_locked:
- NANDFS_WRITEUNLOCK(fsdev);
-out:
- free(cpinfo, M_NANDFSTEMP);
- free(segnums, M_NANDFSTEMP);
- free(bdesc, M_NANDFSTEMP);
- free(vinfo, M_NANDFSTEMP);
-
- return (error);
-}
-
-static void
-nandfs_cleaner(struct nandfs_device *fsdev)
-{
- uint64_t checked_seg = 0;
- int error;
-
- while (!nandfs_cleaner_finished(fsdev)) {
- if (!nandfs_cleaner_enable || rebooting)
- continue;
-
- DPRINTF(CLEAN, ("%s: run started\n", __func__));
-
- fsdev->nd_cleaning = 1;
-
- error = nandfs_cleaner_body(fsdev, &checked_seg);
-
- DPRINTF(CLEAN, ("%s: run finished error %d\n", __func__,
- error));
- }
-
- DPRINTF(CLEAN, ("%s: exiting\n", __func__));
- kthread_exit();
-}
-
-static int
-nandfs_cleaner_clean_segments(struct nandfs_device *nffsdev,
- struct nandfs_vinfo *vinfo, uint32_t nvinfo,
- struct nandfs_period *pd, uint32_t npd,
- struct nandfs_bdesc *bdesc, uint32_t nbdesc,
- uint64_t *segments, uint32_t nsegs)
-{
- struct nandfs_node *gc;
- struct buf *bp;
- uint32_t i;
- int error = 0;
-
- gc = nffsdev->nd_gc_node;
-
- DPRINTF(CLEAN, ("%s: enter\n", __func__));
-
- VOP_LOCK(NTOV(gc), LK_EXCLUSIVE);
- for (i = 0; i < nvinfo; i++) {
- if (!vinfo[i].nvi_alive)
- continue;
- DPRINTF(CLEAN, ("%s: read vblknr:%#jx blk:%#jx\n",
- __func__, (uintmax_t)vinfo[i].nvi_vblocknr,
- (uintmax_t)vinfo[i].nvi_blocknr));
- error = nandfs_bread(nffsdev->nd_gc_node, vinfo[i].nvi_blocknr,
- NULL, 0, &bp);
- if (error) {
- nandfs_error("%s:%d", __FILE__, __LINE__);
- VOP_UNLOCK(NTOV(gc), 0);
- goto out;
- }
- nandfs_vblk_set(bp, vinfo[i].nvi_vblocknr);
- nandfs_buf_set(bp, NANDFS_VBLK_ASSIGNED);
- nandfs_dirty_buf(bp, 1);
- }
- VOP_UNLOCK(NTOV(gc), 0);
-
- /* Delete checkpoints */
- for (i = 0; i < npd; i++) {
- DPRINTF(CLEAN, ("delete checkpoint: %jx\n",
- (uintmax_t)pd[i].p_start));
- error = nandfs_delete_cp(nffsdev->nd_cp_node, pd[i].p_start,
- pd[i].p_end);
- if (error) {
- nandfs_error("%s:%d", __FILE__, __LINE__);
- goto out;
- }
- }
-
- /* Update vblocks */
- for (i = 0; i < nvinfo; i++) {
- if (vinfo[i].nvi_alive)
- continue;
- DPRINTF(CLEAN, ("freeing vblknr: %jx\n", vinfo[i].nvi_vblocknr));
- error = nandfs_vblock_free(nffsdev, vinfo[i].nvi_vblocknr);
- if (error) {
- nandfs_error("%s:%d", __FILE__, __LINE__);
- goto out;
- }
- }
-
- error = nandfs_process_bdesc(nffsdev, bdesc, nbdesc);
- if (error) {
- nandfs_error("%s:%d", __FILE__, __LINE__);
- goto out;
- }
-
- /* Add segments to clean */
- if (nffsdev->nd_free_count) {
- nffsdev->nd_free_base = realloc(nffsdev->nd_free_base,
- (nffsdev->nd_free_count + nsegs) * sizeof(uint64_t),
- M_NANDFSTEMP, M_WAITOK | M_ZERO);
- memcpy(&nffsdev->nd_free_base[nffsdev->nd_free_count], segments,
- nsegs * sizeof(uint64_t));
- nffsdev->nd_free_count += nsegs;
- } else {
- nffsdev->nd_free_base = malloc(nsegs * sizeof(uint64_t),
- M_NANDFSTEMP, M_WAITOK|M_ZERO);
- memcpy(nffsdev->nd_free_base, segments,
- nsegs * sizeof(uint64_t));
- nffsdev->nd_free_count = nsegs;
- }
-
-out:
-
- DPRINTF(CLEAN, ("%s: exit error %d\n", __func__, error));
-
- return (error);
-}
-
-static int
-nandfs_process_bdesc(struct nandfs_device *nffsdev, struct nandfs_bdesc *bd,
- uint64_t nmembs)
-{
- struct nandfs_node *dat_node;
- struct buf *bp;
- uint64_t i;
- int error;
-
- dat_node = nffsdev->nd_dat_node;
-
- VOP_LOCK(NTOV(dat_node), LK_EXCLUSIVE);
-
- for (i = 0; i < nmembs; i++) {
- if (!bd[i].bd_alive)
- continue;
- DPRINTF(CLEAN, ("%s: idx %jx offset %jx\n",
- __func__, i, bd[i].bd_offset));
- if (bd[i].bd_level) {
- error = nandfs_bread_meta(dat_node, bd[i].bd_offset,
- NULL, 0, &bp);
- if (error) {
- nandfs_error("%s: cannot read dat node "
- "level:%d\n", __func__, bd[i].bd_level);
- brelse(bp);
- VOP_UNLOCK(NTOV(dat_node), 0);
- return (error);
- }
- nandfs_dirty_buf_meta(bp, 1);
- nandfs_bmap_dirty_blocks(VTON(bp->b_vp), bp, 1);
- } else {
- error = nandfs_bread(dat_node, bd[i].bd_offset, NULL,
- 0, &bp);
- if (error) {
- nandfs_error("%s: cannot read dat node\n",
- __func__);
- brelse(bp);
- VOP_UNLOCK(NTOV(dat_node), 0);
- return (error);
- }
- nandfs_dirty_buf(bp, 1);
- }
- DPRINTF(CLEAN, ("%s: bp: %p\n", __func__, bp));
- }
-
- VOP_UNLOCK(NTOV(dat_node), 0);
-
- return (0);
-}