Differential D28856 Diff 84451 sys/ufs/ffs/ffs_softdep.c

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sys/ufs/ffs/ffs_softdep.c

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Show First 20 Lines • Show All 3,438 Lines • ▼ Show 20 Lines	jseg_write(ump, jseg, data)
uint8_t *data;		uint8_t *data;
{		{
struct jsegrec *rec;		struct jsegrec *rec;

rec = (struct jsegrec *)data;		rec = (struct jsegrec *)data;
rec->jsr_seq = jseg->js_seq;		rec->jsr_seq = jseg->js_seq;
rec->jsr_oldest = jseg->js_oldseq;		rec->jsr_oldest = jseg->js_oldseq;
rec->jsr_cnt = jseg->js_cnt;		rec->jsr_cnt = jseg->js_cnt;
rec->jsr_blocks = jseg->js_size / ump->um_devvp->v_bufobj.bo_bsize;		rec->jsr_blocks = jseg->js_size / vp2bo(ump->um_devvp)->bo_bsize;
rec->jsr_crc = 0;		rec->jsr_crc = 0;
rec->jsr_time = ump->um_fs->fs_mtime;		rec->jsr_time = ump->um_fs->fs_mtime;
}		}

static inline void		static inline void
inoref_write(inoref, jseg, rec)		inoref_write(inoref, jseg, rec)
struct inoref *inoref;		struct inoref *inoref;
struct jseg *jseg;		struct jseg *jseg;
▲ Show 20 Lines • Show All 250 Lines • ▼ Show 20 Lines	if (MOUNTEDSUJ(mp) == 0)
return;		return;
shouldflush = softdep_flushcache;		shouldflush = softdep_flushcache;
bio = NULL;		bio = NULL;
jseg = NULL;		jseg = NULL;
ump = VFSTOUFS(mp);		ump = VFSTOUFS(mp);
LOCK_OWNED(ump);		LOCK_OWNED(ump);
fs = ump->um_fs;		fs = ump->um_fs;
jblocks = ump->softdep_jblocks;		jblocks = ump->softdep_jblocks;
devbsize = ump->um_devvp->v_bufobj.bo_bsize;		devbsize = vp2bo(ump->um_devvp)->bo_bsize;
/*		/*
* We write anywhere between a disk block and fs block. The upper		* We write anywhere between a disk block and fs block. The upper
* bound is picked to prevent buffer cache fragmentation and limit		* bound is picked to prevent buffer cache fragmentation and limit
* processing time per I/O.		* processing time per I/O.
*/		*/
jrecmin = (devbsize / JREC_SIZE) - 1; /* -1 for seg header */		jrecmin = (devbsize / JREC_SIZE) - 1; /* -1 for seg header */
jrecmax = (fs->fs_bsize / devbsize) * jrecmin;		jrecmax = (fs->fs_bsize / devbsize) * jrecmin;
segwritten = 0;		segwritten = 0;
▲ Show 20 Lines • Show All 3,660 Lines • ▼ Show 20 Lines	trunc_pages(ip, length, extblocks, flags)

vp = ITOV(ip);		vp = ITOV(ip);
fs = ITOFS(ip);		fs = ITOFS(ip);
extend = OFF_TO_IDX(lblktosize(fs, -extblocks));		extend = OFF_TO_IDX(lblktosize(fs, -extblocks));
if ((flags & IO_EXT) != 0)		if ((flags & IO_EXT) != 0)
vn_pages_remove(vp, extend, 0);		vn_pages_remove(vp, extend, 0);
if ((flags & IO_NORMAL) == 0)		if ((flags & IO_NORMAL) == 0)
return;		return;
BO_LOCK(&vp->v_bufobj);		BO_LOCK(vp2bo(vp));
drain_output(vp);		drain_output(vp);
BO_UNLOCK(&vp->v_bufobj);		BO_UNLOCK(vp2bo(vp));
/*		/*
* The vnode pager eliminates file pages we eliminate indirects		* The vnode pager eliminates file pages we eliminate indirects
* below.		* below.
*/		*/
vnode_pager_setsize(vp, length);		vnode_pager_setsize(vp, length);
/*		/*
* Calculate the end based on the last indirect we want to keep. If		* Calculate the end based on the last indirect we want to keep. If
* the block extends into indirects we can just use the negative of		* the block extends into indirects we can just use the negative of
▲ Show 20 Lines • Show All 73 Lines • ▼ Show 20 Lines	trunc_dependencies(ip, freeblks, lastlbn, lastoff, flags)

/*		/*
* We must wait for any I/O in progress to finish so that		* We must wait for any I/O in progress to finish so that
* all potential buffers on the dirty list will be visible.		* all potential buffers on the dirty list will be visible.
* Once they are all there, walk the list and get rid of		* Once they are all there, walk the list and get rid of
* any dependencies.		* any dependencies.
*/		*/
vp = ITOV(ip);		vp = ITOV(ip);
bo = &vp->v_bufobj;		bo = vp2bo(vp);
BO_LOCK(bo);		BO_LOCK(bo);
drain_output(vp);		drain_output(vp);
TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)		TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs)
bp->b_vflags &= ~BV_SCANNED;		bp->b_vflags &= ~BV_SCANNED;
restart:		restart:
TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {		TAILQ_FOREACH(bp, &bo->bo_dirty.bv_hd, b_bobufs) {
if (bp->b_vflags & BV_SCANNED)		if (bp->b_vflags & BV_SCANNED)
continue;		continue;
▲ Show 20 Lines • Show All 995 Lines • ▼ Show 20 Lines	indir_trunc(freework, dbn, lbn)
indirdep = NULL;		indirdep = NULL;
if (freework->fw_indir != NULL) {		if (freework->fw_indir != NULL) {
goingaway = 0;		goingaway = 0;
indirdep = freework->fw_indir;		indirdep = freework->fw_indir;
bp = indirdep->ir_savebp;		bp = indirdep->ir_savebp;
if (bp == NULL \|\| bp->b_blkno != dbn)		if (bp == NULL \|\| bp->b_blkno != dbn)
panic("indir_trunc: Bad saved buf %p blkno %jd",		panic("indir_trunc: Bad saved buf %p blkno %jd",
bp, (intmax_t)dbn);		bp, (intmax_t)dbn);
} else if ((bp = incore(&freeblks->fb_devvp->v_bufobj, dbn)) != NULL) {		} else if ((bp = incore(vp2bo(freeblks->fb_devvp), dbn)) != NULL) {
/*		/*
* The lock prevents the buf dep list from changing and		* The lock prevents the buf dep list from changing and
* indirects on devvp should only ever have one dependency.		* indirects on devvp should only ever have one dependency.
*/		*/
indirdep = WK_INDIRDEP(LIST_FIRST(&bp->b_dep));		indirdep = WK_INDIRDEP(LIST_FIRST(&bp->b_dep));
if (indirdep == NULL \|\| (indirdep->ir_state & GOINGAWAY) == 0)		if (indirdep == NULL \|\| (indirdep->ir_state & GOINGAWAY) == 0)
panic("indir_trunc: Bad indirdep %p from buf %p",		panic("indir_trunc: Bad indirdep %p from buf %p",
indirdep, bp);		indirdep, bp);
▲ Show 20 Lines • Show All 4,483 Lines • ▼ Show 20 Lines	softdep_fsync_mountdev(vp)
struct vnode *vp;		struct vnode *vp;
{		{
struct buf bp, nbp;		struct buf bp, nbp;
struct worklist *wk;		struct worklist *wk;
struct bufobj *bo;		struct bufobj *bo;

if (!vn_isdisk(vp))		if (!vn_isdisk(vp))
panic("softdep_fsync_mountdev: vnode not a disk");		panic("softdep_fsync_mountdev: vnode not a disk");
bo = &vp->v_bufobj;		bo = vp2bo(vp);
restart:		restart:
BO_LOCK(bo);		BO_LOCK(bo);
TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {		TAILQ_FOREACH_SAFE(bp, &bo->bo_dirty.bv_hd, b_bobufs, nbp) {
/*		/*
* If it is already scheduled, skip to the next buffer.		* If it is already scheduled, skip to the next buffer.
*/		*/
if (BUF_LOCK(bp, LK_EXCLUSIVE \| LK_NOWAIT, NULL))		if (BUF_LOCK(bp, LK_EXCLUSIVE \| LK_NOWAIT, NULL))
continue;		continue;
▲ Show 20 Lines • Show All 384 Lines • ▼ Show 20 Lines	flush_newblk_dep(vp, mp, lbn)
struct ufsmount *ump;		struct ufsmount *ump;
struct bufobj *bo;		struct bufobj *bo;
struct inode *ip;		struct inode *ip;
struct buf *bp;		struct buf *bp;
ufs2_daddr_t blkno;		ufs2_daddr_t blkno;
int error;		int error;

error = 0;		error = 0;
bo = &vp->v_bufobj;		bo = vp2bo(vp);
ip = VTOI(vp);		ip = VTOI(vp);
blkno = DIP(ip, i_db[lbn]);		blkno = DIP(ip, i_db[lbn]);
if (blkno == 0)		if (blkno == 0)
panic("flush_newblk_dep: Missing block");		panic("flush_newblk_dep: Missing block");
ump = VFSTOUFS(mp);		ump = VFSTOUFS(mp);
ACQUIRE_LOCK(ump);		ACQUIRE_LOCK(ump);
/*		/*
* Loop until all dependencies related to this block are satisfied.		* Loop until all dependencies related to this block are satisfied.
▲ Show 20 Lines • Show All 543 Lines • ▼ Show 20 Lines
{		{
struct thread *td;		struct thread *td;
struct vnode lvp, mvp;		struct vnode lvp, mvp;
int failed_vnode;		int failed_vnode;

failed_vnode = 0;		failed_vnode = 0;
td = curthread;		td = curthread;
MNT_VNODE_FOREACH_ALL(lvp, mp, mvp) {		MNT_VNODE_FOREACH_ALL(lvp, mp, mvp) {
if (TAILQ_FIRST(&lvp->v_bufobj.bo_dirty.bv_hd) == 0) {		if (TAILQ_FIRST(&vp2bo(lvp)->bo_dirty.bv_hd) == NULL) {
VI_UNLOCK(lvp);		VI_UNLOCK(lvp);
continue;		continue;
}		}
if (vget(lvp, LK_EXCLUSIVE \| LK_INTERLOCK \| LK_NOWAIT) != 0) {		if (vget(lvp, LK_EXCLUSIVE \| LK_INTERLOCK \| LK_NOWAIT) != 0) {
failed_vnode = 1;		failed_vnode = 1;
continue;		continue;
}		}
if (lvp->v_vflag & VV_NOSYNC) { /* unlinked */		if (lvp->v_vflag & VV_NOSYNC) { /* unlinked */
▲ Show 20 Lines • Show All 308 Lines • ▼ Show 20 Lines	LIST_FOREACH(pagedep, pagedephd, pd_hash) {
vfs_unbusy(mp);		vfs_unbusy(mp);
if (error != 0) {		if (error != 0) {
softdep_error("clear_remove: vget", error);		softdep_error("clear_remove: vget", error);
goto finish_write;		goto finish_write;
}		}
MPASS(VTOI(vp)->i_mode != 0);		MPASS(VTOI(vp)->i_mode != 0);
if ((error = ffs_syncvnode(vp, MNT_NOWAIT, 0)))		if ((error = ffs_syncvnode(vp, MNT_NOWAIT, 0)))
softdep_error("clear_remove: fsync", error);		softdep_error("clear_remove: fsync", error);
bo = &vp->v_bufobj;		bo = vp2bo(vp);
BO_LOCK(bo);		BO_LOCK(bo);
drain_output(vp);		drain_output(vp);
BO_UNLOCK(bo);		BO_UNLOCK(bo);
vput(vp);		vput(vp);
finish_write:		finish_write:
vn_finished_write(mp);		vn_finished_write(mp);
ACQUIRE_LOCK(ump);		ACQUIRE_LOCK(ump);
return;		return;
▲ Show 20 Lines • Show All 73 Lines • ▼ Show 20 Lines	if (VTOI(vp)->i_mode == 0) {
do {		do {
error = ffs_syncvnode(vp, MNT_WAIT, 0);		error = ffs_syncvnode(vp, MNT_WAIT, 0);
} while (error == ERELOOKUP);		} while (error == ERELOOKUP);
if (error != 0)		if (error != 0)
softdep_error("clear_inodedeps: fsync1", error);		softdep_error("clear_inodedeps: fsync1", error);
} else {		} else {
if ((error = ffs_syncvnode(vp, MNT_NOWAIT, 0)))		if ((error = ffs_syncvnode(vp, MNT_NOWAIT, 0)))
softdep_error("clear_inodedeps: fsync2", error);		softdep_error("clear_inodedeps: fsync2", error);
BO_LOCK(&vp->v_bufobj);		BO_LOCK(vp2bo(vp));
drain_output(vp);		drain_output(vp);
BO_UNLOCK(&vp->v_bufobj);		BO_UNLOCK(vp2bo(vp));
}		}
vput(vp);		vput(vp);
vn_finished_write(mp);		vn_finished_write(mp);
ACQUIRE_LOCK(ump);		ACQUIRE_LOCK(ump);
}		}
}		}

void		void
▲ Show 20 Lines • Show All 353 Lines • ▼ Show 20 Lines	softdep_check_suspend(struct mount *mp,
int secondary_writes,		int secondary_writes,
int secondary_accwrites)		int secondary_accwrites)
{		{
struct bufobj *bo;		struct bufobj *bo;
struct ufsmount *ump;		struct ufsmount *ump;
struct inodedep *inodedep;		struct inodedep *inodedep;
int error, unlinked;		int error, unlinked;

bo = &devvp->v_bufobj;		bo = vp2bo(devvp);
ASSERT_BO_WLOCKED(bo);		ASSERT_BO_WLOCKED(bo);

/*		/*
* If we are not running with soft updates, then we need only		* If we are not running with soft updates, then we need only
* deal with secondary writes as we try to suspend.		* deal with secondary writes as we try to suspend.
*/		*/
if (MOUNTEDSOFTDEP(mp) == 0) {		if (MOUNTEDSOFTDEP(mp) == 0) {
MNT_ILOCK(mp);		MNT_ILOCK(mp);
▲ Show 20 Lines • Show All 110 Lines • ▼ Show 20 Lines
* Wait for pending output on a vnode to complete.		* Wait for pending output on a vnode to complete.
*/		*/
static void		static void
drain_output(vp)		drain_output(vp)
struct vnode *vp;		struct vnode *vp;
{		{

ASSERT_VOP_LOCKED(vp, "drain_output");		ASSERT_VOP_LOCKED(vp, "drain_output");
(void)bufobj_wwait(&vp->v_bufobj, 0, 0);		(void)bufobj_wwait(vp2bo(vp), 0, 0);
}		}

/*		/*
* Called whenever a buffer that is being invalidated or reallocated		* Called whenever a buffer that is being invalidated or reallocated
* contains dependencies. This should only happen if an I/O error has		* contains dependencies. This should only happen if an I/O error has
* occurred. The routine is called with the buffer locked.		* occurred. The routine is called with the buffer locked.
*/		*/
static void		static void
▲ Show 20 Lines • Show All 279 Lines • Show Last 20 Lines