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zvol_os: Tidy up asserts

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Using more specific assert variants gives better messages on failure.

No functional change.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Matt Macy <mmacy@FreeBSD.org>
Signed-off-by: Ryan Moeller <ryan@iXsystems.com>
Closes #11117
This commit is contained in:
Ryan Moeller 2020-10-21 17:23:08 +00:00 committed by Brian Behlendorf
parent 52f1ef3b2d
commit 00a27515f0
2 changed files with 30 additions and 26 deletions
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30
module/os/freebsd/zfs/zvol_os.c
View File

@ -248,7 +248,7 @@ retry:
} }
mutex_enter(&zv->zv_state_lock); mutex_enter(&zv->zv_state_lock);
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_GEOM); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_GEOM);
/* /*
* make sure zvol is not suspended during first open * make sure zvol is not suspended during first open
@ -342,17 +342,17 @@ zvol_geom_close(struct g_provider *pp, int flag, int count)
mutex_enter(&zv->zv_state_lock); mutex_enter(&zv->zv_state_lock);
if (zv->zv_flags & ZVOL_EXCL) { if (zv->zv_flags & ZVOL_EXCL) {
ASSERT(zv->zv_open_count == 1); ASSERT3U(zv->zv_open_count, ==, 1);
zv->zv_flags &= ~ZVOL_EXCL; zv->zv_flags &= ~ZVOL_EXCL;
} }
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_GEOM); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_GEOM);
/* /*
* If the open count is zero, this is a spurious close. * If the open count is zero, this is a spurious close.
* That indicates a bug in the kernel / DDI framework. * That indicates a bug in the kernel / DDI framework.
*/ */
ASSERT(zv->zv_open_count > 0); ASSERT3U(zv->zv_open_count, >, 0);
/* /*
* make sure zvol is not suspended during last close * make sure zvol is not suspended during last close
@ -400,7 +400,7 @@ zvol_geom_run(zvol_state_t *zv)
struct zvol_state_geom *zsg = &zv->zv_zso->zso_geom; struct zvol_state_geom *zsg = &zv->zv_zso->zso_geom;
struct g_provider *pp = zsg->zsg_provider; struct g_provider *pp = zsg->zsg_provider;
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_GEOM); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_GEOM);
g_error_provider(pp, 0); g_error_provider(pp, 0);
@ -414,7 +414,7 @@ zvol_geom_destroy(zvol_state_t *zv)
struct zvol_state_geom *zsg = &zv->zv_zso->zso_geom; struct zvol_state_geom *zsg = &zv->zv_zso->zso_geom;
struct g_provider *pp = zsg->zsg_provider; struct g_provider *pp = zsg->zsg_provider;
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_GEOM); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_GEOM);
g_topology_assert(); g_topology_assert();
@ -483,7 +483,7 @@ zvol_geom_worker(void *arg)
struct zvol_state_geom *zsg = &zv->zv_zso->zso_geom; struct zvol_state_geom *zsg = &zv->zv_zso->zso_geom;
struct bio *bp; struct bio *bp;
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_GEOM); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_GEOM);
thread_lock(curthread); thread_lock(curthread);
sched_prio(curthread, PRIBIO); sched_prio(curthread, PRIBIO);
@ -540,7 +540,7 @@ zvol_geom_bio_getattr(struct bio *bp)
zvol_state_t *zv; zvol_state_t *zv;
zv = bp->bio_to->private; zv = bp->bio_to->private;
ASSERT(zv != NULL); ASSERT3P(zv, !=, NULL);
spa_t *spa = dmu_objset_spa(zv->zv_objset); spa_t *spa = dmu_objset_spa(zv->zv_objset);
uint64_t refd, avail, usedobjs, availobjs; uint64_t refd, avail, usedobjs, availobjs;
@ -621,7 +621,7 @@ zvol_geom_bio_strategy(struct bio *bp)
volsize = zv->zv_volsize; volsize = zv->zv_volsize;
os = zv->zv_objset; os = zv->zv_objset;
ASSERT(os != NULL); ASSERT3P(os, !=, NULL);
addr = bp->bio_data; addr = bp->bio_data;
resid = bp->bio_length; resid = bp->bio_length;
@ -836,7 +836,7 @@ zvol_cdev_open(struct cdev *dev, int flags, int fmt, struct thread *td)
mutex_enter(&zv->zv_state_lock); mutex_enter(&zv->zv_state_lock);
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_DEV); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_DEV);
/* /*
* make sure zvol is not suspended during first open * make sure zvol is not suspended during first open
@ -925,17 +925,17 @@ zvol_cdev_close(struct cdev *dev, int flags, int fmt, struct thread *td)
mutex_enter(&zv->zv_state_lock); mutex_enter(&zv->zv_state_lock);
if (zv->zv_flags & ZVOL_EXCL) { if (zv->zv_flags & ZVOL_EXCL) {
ASSERT(zv->zv_open_count == 1); ASSERT3U(zv->zv_open_count, ==, 1);
zv->zv_flags &= ~ZVOL_EXCL; zv->zv_flags &= ~ZVOL_EXCL;
} }
ASSERT(zv->zv_zso->zso_volmode == ZFS_VOLMODE_DEV); ASSERT3S(zv->zv_zso->zso_volmode, ==, ZFS_VOLMODE_DEV);
/* /*
* If the open count is zero, this is a spurious close. * If the open count is zero, this is a spurious close.
* That indicates a bug in the kernel / DDI framework. * That indicates a bug in the kernel / DDI framework.
*/ */
ASSERT(zv->zv_open_count > 0); ASSERT3U(zv->zv_open_count, >, 0);
/* /*
* make sure zvol is not suspended during last close * make sure zvol is not suspended during last close
* (hold zv_suspend_lock) and respect proper lock acquisition * (hold zv_suspend_lock) and respect proper lock acquisition
@ -1150,7 +1150,7 @@ zvol_rename_minor(zvol_state_t *zv, const char *newname)
g_topology_lock(); g_topology_lock();
gp = pp->geom; gp = pp->geom;
ASSERT(gp != NULL); ASSERT3P(gp, !=, NULL);
zsg->zsg_provider = NULL; zsg->zsg_provider = NULL;
g_wither_provider(pp, ENXIO); g_wither_provider(pp, ENXIO);
@ -1205,7 +1205,7 @@ zvol_free(zvol_state_t *zv)
{ {
ASSERT(!RW_LOCK_HELD(&zv->zv_suspend_lock)); ASSERT(!RW_LOCK_HELD(&zv->zv_suspend_lock));
ASSERT(!MUTEX_HELD(&zv->zv_state_lock)); ASSERT(!MUTEX_HELD(&zv->zv_state_lock));
ASSERT(zv->zv_open_count == 0); ASSERT0(zv->zv_open_count);
ZFS_LOG(1, "ZVOL %s destroyed.", zv->zv_name); ZFS_LOG(1, "ZVOL %s destroyed.", zv->zv_name);

26
module/os/linux/zfs/zvol_os.c
View File

@ -107,8 +107,9 @@ zvol_write(void *arg)
uio_from_bio(&uio, bio); uio_from_bio(&uio, bio);
zvol_state_t *zv = zvr->zv; zvol_state_t *zv = zvr->zv;
ASSERT(zv && zv->zv_open_count > 0); ASSERT3P(zv, !=, NULL);
ASSERT(zv->zv_zilog != NULL); ASSERT3U(zv->zv_open_count, >, 0);
ASSERT3P(zv->zv_zilog, !=, NULL);
/* bio marked as FLUSH need to flush before write */ /* bio marked as FLUSH need to flush before write */
if (bio_is_flush(bio)) if (bio_is_flush(bio))
@ -189,8 +190,9 @@ zvol_discard(void *arg)
dmu_tx_t *tx; dmu_tx_t *tx;
unsigned long start_jif; unsigned long start_jif;
ASSERT(zv && zv->zv_open_count > 0); ASSERT3P(zv, !=, NULL);
ASSERT(zv->zv_zilog != NULL); ASSERT3U(zv->zv_open_count, >, 0);
ASSERT3P(zv->zv_zilog, !=, NULL);
start_jif = jiffies; start_jif = jiffies;
blk_generic_start_io_acct(zv->zv_zso->zvo_queue, WRITE, blk_generic_start_io_acct(zv->zv_zso->zvo_queue, WRITE,
@ -256,7 +258,8 @@ zvol_read(void *arg)
uio_from_bio(&uio, bio); uio_from_bio(&uio, bio);
zvol_state_t *zv = zvr->zv; zvol_state_t *zv = zvr->zv;
ASSERT(zv && zv->zv_open_count > 0); ASSERT3P(zv, !=, NULL);
ASSERT3U(zv->zv_open_count, >, 0);
ssize_t start_resid = uio.uio_resid; ssize_t start_resid = uio.uio_resid;
unsigned long start_jif = jiffies; unsigned long start_jif = jiffies;
@ -482,9 +485,9 @@ zvol_open(struct block_device *bdev, fmode_t flag)
rw_exit(&zvol_state_lock); rw_exit(&zvol_state_lock);
ASSERT(MUTEX_HELD(&zv->zv_state_lock)); ASSERT(MUTEX_HELD(&zv->zv_state_lock));
ASSERT(zv->zv_open_count != 0 || RW_READ_HELD(&zv->zv_suspend_lock));
if (zv->zv_open_count == 0) { if (zv->zv_open_count == 0) {
ASSERT(RW_READ_HELD(&zv->zv_suspend_lock));
error = -zvol_first_open(zv, !(flag & FMODE_WRITE)); error = -zvol_first_open(zv, !(flag & FMODE_WRITE));
if (error) if (error)
goto out_mutex; goto out_mutex;
@ -530,7 +533,7 @@ zvol_release(struct gendisk *disk, fmode_t mode)
zv = disk->private_data; zv = disk->private_data;
mutex_enter(&zv->zv_state_lock); mutex_enter(&zv->zv_state_lock);
ASSERT(zv->zv_open_count > 0); ASSERT3U(zv->zv_open_count, >, 0);
/* /*
* make sure zvol is not suspended during last close * make sure zvol is not suspended during last close
* (hold zv_suspend_lock) and respect proper lock acquisition * (hold zv_suspend_lock) and respect proper lock acquisition
@ -553,11 +556,12 @@ zvol_release(struct gendisk *disk, fmode_t mode)
rw_exit(&zvol_state_lock); rw_exit(&zvol_state_lock);
ASSERT(MUTEX_HELD(&zv->zv_state_lock)); ASSERT(MUTEX_HELD(&zv->zv_state_lock));
ASSERT(zv->zv_open_count != 1 || RW_READ_HELD(&zv->zv_suspend_lock));
zv->zv_open_count--; zv->zv_open_count--;
if (zv->zv_open_count == 0) if (zv->zv_open_count == 0) {
ASSERT(RW_READ_HELD(&zv->zv_suspend_lock));
zvol_last_close(zv); zvol_last_close(zv);
}
mutex_exit(&zv->zv_state_lock); mutex_exit(&zv->zv_state_lock);
@ -859,8 +863,8 @@ zvol_free(zvol_state_t *zv)
ASSERT(!RW_LOCK_HELD(&zv->zv_suspend_lock)); ASSERT(!RW_LOCK_HELD(&zv->zv_suspend_lock));
ASSERT(!MUTEX_HELD(&zv->zv_state_lock)); ASSERT(!MUTEX_HELD(&zv->zv_state_lock));
ASSERT(zv->zv_open_count == 0); ASSERT0(zv->zv_open_count);
ASSERT(zv->zv_zso->zvo_disk->private_data == NULL); ASSERT3P(zv->zv_zso->zvo_disk->private_data, ==, NULL);
rw_destroy(&zv->zv_suspend_lock); rw_destroy(&zv->zv_suspend_lock);
zfs_rangelock_fini(&zv->zv_rangelock); zfs_rangelock_fini(&zv->zv_rangelock);