/*
* move deltas from deltamap into the log
*/
void
top_log(ufsvfs_t *ufsvfsp, char *va, offset_t vamof, off_t nb,
caddr_t buf, uint32_t bufsz)
{
ml_unit_t *ul = ufsvfsp->vfs_log;
mapentry_t *me;
offset_t hmof;
uint32_t hnb, nb1;
/*
* needed for the roll thread's heuristic
*/
ul->un_logmap->mtm_ref = 1;
if (buf && ufs_crb_enable) {
ASSERT((bufsz & DEV_BMASK) == 0);
/*
* Move any deltas to the logmap. Split requests that
* straddle MAPBLOCKSIZE hash boundaries (i.e. summary info).
*/
for (hmof = vamof - (va - buf), nb1 = nb; bufsz;
bufsz -= hnb, hmof += hnb, buf += hnb, nb1 -= hnb) {
hnb = MAPBLOCKSIZE - (hmof & MAPBLOCKOFF);
if (hnb > bufsz)
hnb = bufsz;
me = deltamap_remove(ul->un_deltamap,
MAX(hmof, vamof), MIN(hnb, nb1));
if (me) {
logmap_add_buf(ul, va, hmof, me, buf, hnb);
}
}
} else {
/*
* if there are deltas
*/
me = deltamap_remove(ul->un_deltamap, vamof, nb);
if (me) {
/*
* move to logmap
*/
logmap_add(ul, va, vamof, me);
}
}
ASSERT((ul->un_matamap == NULL) ||
matamap_within(ul->un_matamap, vamof, nb));
}
void
lqfs_write_strategy(ml_unit_t *ul, buf_t *bp)
{
offset_t mof = ldbtob(bp->b_blkno);
off_t nb = bp->b_bcount;
char *va;
mapentry_t *me;
uchar_t ord;
qfsvfs_t *qfsvfsp = ul->un_qfsvfs;
#ifdef LUFS
#else
caddr_t buf;
va = bp_mapin_common(bp, VM_SLEEP);
buf = bp->b_un.b_addr;
#endif /* LUFS */
ASSERT((nb & DEV_BMASK) == 0);
ul->un_logmap->mtm_ref = 1;
/*
* if there are deltas, move into log
*/
ord = lqfs_find_ord(qfsvfsp, bp);
#ifdef LUFS
me = deltamap_remove(ul->un_deltamap, mof, ord, nb);
if (me) {
va = bp_mapin_common(bp, VM_SLEEP);
ASSERT(((ul->un_debug & MT_WRITE_CHECK) == 0) ||
(ul->un_matamap == NULL)||
matamap_within(ul->un_matamap, mof, ord, nb));
/*
* move to logmap
*/
if (qfs_crb_enable) {
logmap_add_buf(ul, va, mof, ord, me,
bp->b_un.b_addr, nb);
} else {
logmap_add(ul, va, mof, ord, me);
}
if (ul->un_flags & LDL_ERROR) {
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
}
biodone(bp);
return;
}
#else
if (buf && qfs_crb_enable) {
uint32_t bufsz;
offset_t vamof;
offset_t hmof;
uchar_t vaord;
uchar_t hord;
uint32_t hnb, nb1;
bufsz = bp->b_bcount;
ASSERT((bufsz & DEV_BMASK) == 0);
vamof = mof;
vaord = ord;
/*
* Move any deltas to the logmap. Split requests that
* straddle MAPBLOCKSIZE hash boundaries (i.e. summary info).
*/
for (hmof = vamof - (va - buf), nb1 = nb; bufsz;
bufsz -= hnb, hmof += hnb, buf += hnb, nb1 -= hnb) {
hnb = MAPBLOCKSIZE - (hmof & MAPBLOCKOFF);
if (hnb > bufsz) {
hnb = bufsz;
}
LQFS_MSG(CE_WARN, "lqfs_write_strategy(): Removing "
"deltamap deltas within mof 0x%llx ord %d nb %d\n",
MAX(hmof, vamof), vaord, MIN(hnb, nb1));
me = deltamap_remove(ul->un_deltamap,
MAX(hmof, vamof), vaord, MIN(hnb, nb1));
hord = vaord;
if (me) {
logmap_add_buf(ul, va, hmof, hord,
me, buf, hnb);
if (ul->un_flags & LDL_ERROR) {
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
}
biodone(bp);
return;
}
}
} else {
/*
* if there are deltas
*/
LQFS_MSG(CE_WARN, "lqfs_write_strategy(): Removing "
"deltamap deltas within mof 0x%x ord %d nb %d\n",
mof, ord, nb);
me = deltamap_remove(ul->un_deltamap, mof, ord, nb);
if (me) {
ASSERT(((ul->un_debug & MT_WRITE_CHECK) == 0) ||
(ul->un_matamap == NULL)||
matamap_within(ul->un_matamap, mof, ord, nb));
/*
* move to logmap
*/
logmap_add(ul, va, mof, ord, me);
if (ul->un_flags & LDL_ERROR) {
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
}
biodone(bp);
return;
}
}
#endif /* LUFS */
if (ul->un_flags & LDL_ERROR) {
bp->b_flags |= B_ERROR;
bp->b_error = EIO;
biodone(bp);
return;
}
/*
* Check that we are not updating metadata, or if so then via B_PHYS.
*/
ASSERT((ul->un_matamap == NULL) ||
!(matamap_overlap(ul->un_matamap, mof, ord, nb) &&
((bp->b_flags & B_PHYS) == 0)));
LQFS_SET_IOTSTAMP(ul->un_qfsvfs, ddi_get_lbolt());
logstats.ls_lwrites.value.ui64++;
#ifdef LQFS_TODO_SNAPSHOT
/* If snapshots are enabled, write through the snapshot driver */
if (ul->un_qfsvfs->vfs_snapshot) {
fssnap_strategy(&ul->un_qfsvfs->vfs_snapshot, bp);
} else {
#endif /* LQFS_TODO_SNAPSHOT */
if ((bp->b_flags & B_READ) == 0) {
LQFS_MSG(CE_WARN, "lqfs_write_strategy(): "
"bdev_strategy writing mof 0x%x edev %ld "
"nb %d\n", bp->b_blkno * 512, bp->b_edev,
bp->b_bcount);
} else {
LQFS_MSG(CE_WARN, "lqfs_write_strategy(): "
"bdev_strategy reading mof 0x%x edev %ld "
"nb %d\n", bp->b_blkno * 512, bp->b_edev,
bp->b_bcount);
}
(void) bdev_strategy(bp);
#ifdef LQFS_TODO_SNAPSHOT
}
#endif /* LQFS_TODO_SNAPSHOT */
#ifdef LQFS_TODO_STATS
lwp_stat_update(LWP_STAT_OUBLK, 1);
#endif /* LQFS_TODO_STATS */
}