diff options
Diffstat (limited to 'module/zfs/zfs_vfsops.c')
| -rw-r--r-- | module/zfs/zfs_vfsops.c | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/module/zfs/zfs_vfsops.c b/module/zfs/zfs_vfsops.c index 20ff165d9..85c275822 100644 --- a/module/zfs/zfs_vfsops.c +++ b/module/zfs/zfs_vfsops.c @@ -1263,7 +1263,7 @@ EXPORT_SYMBOL(zfs_sb_prune); /* * Teardown the zfs_sb_t. * - * Note, if 'unmounting' if FALSE, we return with the 'z_teardown_lock' + * Note, if 'unmounting' is FALSE, we return with the 'z_teardown_lock' * and 'z_teardown_inactive_lock' held. */ int @@ -1358,8 +1358,8 @@ zfs_sb_teardown(zfs_sb_t *zsb, boolean_t unmounting) */ if (unmounting) { zsb->z_unmounted = B_TRUE; - rrm_exit(&zsb->z_teardown_lock, FTAG); rw_exit(&zsb->z_teardown_inactive_lock); + rrm_exit(&zsb->z_teardown_lock, FTAG); } /* @@ -1906,6 +1906,28 @@ zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value) } EXPORT_SYMBOL(zfs_get_zplprop); +/* + * Return true if the coresponding vfs's unmounted flag is set. + * Otherwise return false. + * If this function returns true we know VFS unmount has been initiated. + */ +boolean_t +zfs_get_vfs_flag_unmounted(objset_t *os) +{ + zfs_sb_t *zfvp; + boolean_t unmounted = B_FALSE; + + ASSERT(dmu_objset_type(os) == DMU_OST_ZFS); + + mutex_enter(&os->os_user_ptr_lock); + zfvp = dmu_objset_get_user(os); + if (zfvp != NULL && zfvp->z_unmounted) + unmounted = B_TRUE; + mutex_exit(&os->os_user_ptr_lock); + + return (unmounted); +} + void zfs_init(void) { |