md: start to refactor do_md_stop
do_md_stop is large and clunky, so hard to understand.
This is a first step of refactoring, pulling two simple
sub-functions out.
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index e752332..002d0a3 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4568,6 +4568,58 @@
spin_unlock(&inode->i_lock);
}
+static void md_clean(mddev_t *mddev)
+{
+ mddev->array_sectors = 0;
+ mddev->external_size = 0;
+ mddev->dev_sectors = 0;
+ mddev->raid_disks = 0;
+ mddev->recovery_cp = 0;
+ mddev->resync_min = 0;
+ mddev->resync_max = MaxSector;
+ mddev->reshape_position = MaxSector;
+ mddev->external = 0;
+ mddev->persistent = 0;
+ mddev->level = LEVEL_NONE;
+ mddev->clevel[0] = 0;
+ mddev->flags = 0;
+ mddev->ro = 0;
+ mddev->metadata_type[0] = 0;
+ mddev->chunk_sectors = 0;
+ mddev->ctime = mddev->utime = 0;
+ mddev->layout = 0;
+ mddev->max_disks = 0;
+ mddev->events = 0;
+ mddev->delta_disks = 0;
+ mddev->new_level = LEVEL_NONE;
+ mddev->new_layout = 0;
+ mddev->new_chunk_sectors = 0;
+ mddev->curr_resync = 0;
+ mddev->resync_mismatches = 0;
+ mddev->suspend_lo = mddev->suspend_hi = 0;
+ mddev->sync_speed_min = mddev->sync_speed_max = 0;
+ mddev->recovery = 0;
+ mddev->in_sync = 0;
+ mddev->degraded = 0;
+ mddev->barriers_work = 0;
+ mddev->safemode = 0;
+ mddev->bitmap_info.offset = 0;
+ mddev->bitmap_info.default_offset = 0;
+ mddev->bitmap_info.chunksize = 0;
+ mddev->bitmap_info.daemon_sleep = 0;
+ mddev->bitmap_info.max_write_behind = 0;
+}
+
+static void md_stop(mddev_t *mddev)
+{
+ mddev->pers->stop(mddev);
+ if (mddev->pers->sync_request && mddev->to_remove == NULL)
+ mddev->to_remove = &md_redundancy_group;
+ module_put(mddev->pers->owner);
+ mddev->pers = NULL;
+
+}
+
/* mode:
* 0 - completely stop and dis-assemble array
* 1 - switch to readonly
@@ -4608,14 +4660,11 @@
if (mddev->ro)
set_disk_ro(disk, 0);
- mddev->pers->stop(mddev);
+ md_stop(mddev);
mddev->queue->merge_bvec_fn = NULL;
mddev->queue->unplug_fn = NULL;
mddev->queue->backing_dev_info.congested_fn = NULL;
- module_put(mddev->pers->owner);
- if (mddev->pers->sync_request && mddev->to_remove == NULL)
- mddev->to_remove = &md_redundancy_group;
- mddev->pers = NULL;
+
/* tell userspace to handle 'inactive' */
sysfs_notify_dirent(mddev->sysfs_state);
@@ -4663,44 +4712,7 @@
export_array(mddev);
- mddev->array_sectors = 0;
- mddev->external_size = 0;
- mddev->dev_sectors = 0;
- mddev->raid_disks = 0;
- mddev->recovery_cp = 0;
- mddev->resync_min = 0;
- mddev->resync_max = MaxSector;
- mddev->reshape_position = MaxSector;
- mddev->external = 0;
- mddev->persistent = 0;
- mddev->level = LEVEL_NONE;
- mddev->clevel[0] = 0;
- mddev->flags = 0;
- mddev->ro = 0;
- mddev->metadata_type[0] = 0;
- mddev->chunk_sectors = 0;
- mddev->ctime = mddev->utime = 0;
- mddev->layout = 0;
- mddev->max_disks = 0;
- mddev->events = 0;
- mddev->delta_disks = 0;
- mddev->new_level = LEVEL_NONE;
- mddev->new_layout = 0;
- mddev->new_chunk_sectors = 0;
- mddev->curr_resync = 0;
- mddev->resync_mismatches = 0;
- mddev->suspend_lo = mddev->suspend_hi = 0;
- mddev->sync_speed_min = mddev->sync_speed_max = 0;
- mddev->recovery = 0;
- mddev->in_sync = 0;
- mddev->degraded = 0;
- mddev->barriers_work = 0;
- mddev->safemode = 0;
- mddev->bitmap_info.offset = 0;
- mddev->bitmap_info.default_offset = 0;
- mddev->bitmap_info.chunksize = 0;
- mddev->bitmap_info.daemon_sleep = 0;
- mddev->bitmap_info.max_write_behind = 0;
+ md_clean(mddev);
kobject_uevent(&disk_to_dev(mddev->gendisk)->kobj, KOBJ_CHANGE);
if (mddev->hold_active == UNTIL_STOP)
mddev->hold_active = 0;