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Fix panic after ZVOL renamed to name invalid for DEVFS.

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MFC after:	2 weeks
This commit is contained in:
Alexander Motin 2016-10-24 12:24:24 +00:00
parent 5bf51473c0
commit f0cbbdecbc
1 changed files with 12 additions and 10 deletions
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22
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zvol.c
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@ -782,8 +782,10 @@ zvol_remove_zv(zvol_state_t *zv)
g_topology_lock();
zvol_geom_destroy(zv);
g_topology_unlock();
} else if (zv->zv_volmode == ZFS_VOLMODE_DEV)
destroy_dev(zv->zv_dev);
} else if (zv->zv_volmode == ZFS_VOLMODE_DEV) {
if (zv->zv_dev != NULL)
destroy_dev(zv->zv_dev);
}
#endif
avl_destroy(&zv->zv_znode.z_range_avl);
@ -2973,14 +2975,14 @@ zvol_rename_minor(zvol_state_t *zv, const char *newname)
} else if (zv->zv_volmode == ZFS_VOLMODE_DEV) {
struct make_dev_args args;
dev = zv->zv_dev;
ASSERT(dev != NULL);
zv->zv_dev = NULL;
destroy_dev(dev);
if (zv->zv_total_opens > 0) {
zv->zv_flags &= ~ZVOL_EXCL;
zv->zv_total_opens = 0;
zvol_last_close(zv);
if ((dev = zv->zv_dev) != NULL) {
zv->zv_dev = NULL;
destroy_dev(dev);
if (zv->zv_total_opens > 0) {
zv->zv_flags &= ~ZVOL_EXCL;
zv->zv_total_opens = 0;
zvol_last_close(zv);
}
}
make_dev_args_init(&args);