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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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module/os/linux/zfs/zvol_os.c
+15 -11
View File
@@ -107,8 +107,9 @@ zvol_write(void *arg)
uio_from_bio(&uio, bio);
zvol_state_t *zv = zvr->zv;
ASSERT(zv && zv->zv_open_count > 0);
ASSERT(zv->zv_zilog != NULL);
ASSERT3P(zv, !=, NULL);
ASSERT3U(zv->zv_open_count, >, 0);
ASSERT3P(zv->zv_zilog, !=, NULL);
/* bio marked as FLUSH need to flush before write */
if (bio_is_flush(bio))
@@ -189,8 +190,9 @@ zvol_discard(void *arg)
dmu_tx_t *tx;
unsigned long start_jif;
ASSERT(zv && zv->zv_open_count > 0);
ASSERT(zv->zv_zilog != NULL);
ASSERT3P(zv, !=, NULL);
ASSERT3U(zv->zv_open_count, >, 0);
ASSERT3P(zv->zv_zilog, !=, NULL);
start_jif = jiffies;
blk_generic_start_io_acct(zv->zv_zso->zvo_queue, WRITE,
@@ -256,7 +258,8 @@ zvol_read(void *arg)
uio_from_bio(&uio, bio);
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;
unsigned long start_jif = jiffies;
@@ -482,9 +485,9 @@ zvol_open(struct block_device *bdev, fmode_t flag)
rw_exit(&zvol_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) {
ASSERT(RW_READ_HELD(&zv->zv_suspend_lock));
error = -zvol_first_open(zv, !(flag & FMODE_WRITE));
if (error)
goto out_mutex;
@@ -530,7 +533,7 @@ zvol_release(struct gendisk *disk, fmode_t mode)
zv = disk->private_data;
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
* (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);
ASSERT(MUTEX_HELD(&zv->zv_state_lock));
ASSERT(zv->zv_open_count != 1 || RW_READ_HELD(&zv->zv_suspend_lock));
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);
}
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(!MUTEX_HELD(&zv->zv_state_lock));
ASSERT(zv->zv_open_count == 0);
ASSERT(zv->zv_zso->zvo_disk->private_data == NULL);
ASSERT0(zv->zv_open_count);
ASSERT3P(zv->zv_zso->zvo_disk->private_data, ==, NULL);
rw_destroy(&zv->zv_suspend_lock);
zfs_rangelock_fini(&zv->zv_rangelock);