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authorChristoph Hellwig <hch@lst.de>2023-06-01 12:44:47 +0300
committerJens Axboe <axboe@kernel.dk>2023-06-05 19:53:04 +0300
commit66fddc25fe182fd7d28b35f4173113f3eefc7fb5 (patch)
tree0387d23284b30543a0bc40810a06bd0c9680d12e /block
parent74e6464a987b2572771ac19163e961777fd0252e (diff)
downloadlinux-66fddc25fe182fd7d28b35f4173113f3eefc7fb5.tar.xz
block: consolidate the shutdown logic in blk_mark_disk_dead and del_gendisk
blk_mark_disk_dead does very similar work a a section of del_gendisk: - set the GD_DEAD flag - set the capacity to zero - start a queue drain but del_gendisk also sets QUEUE_FLAG_DYING on the queue if it is owned by the disk, sets the capacity to zero before starting the drain, and both with sending a uevent and kernel message for this fake capacity change. Move the exact logic from the more heavily used del_gendisk into blk_mark_disk_dead and then call blk_mark_disk_dead from del_gendisk. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Link: https://lore.kernel.org/r/20230601094459.1350643-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/genhd.c26
1 files changed, 12 insertions, 14 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 3537b7d7c484..aa327314905e 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -572,13 +572,22 @@ EXPORT_SYMBOL(device_add_disk);
*/
void blk_mark_disk_dead(struct gendisk *disk)
{
+ /*
+ * Fail any new I/O.
+ */
set_bit(GD_DEAD, &disk->state);
- blk_queue_start_drain(disk->queue);
+ if (test_bit(GD_OWNS_QUEUE, &disk->state))
+ blk_queue_flag_set(QUEUE_FLAG_DYING, disk->queue);
/*
* Stop buffered writers from dirtying pages that can't be written out.
*/
- set_capacity_and_notify(disk, 0);
+ set_capacity(disk, 0);
+
+ /*
+ * Prevent new I/O from crossing bio_queue_enter().
+ */
+ blk_queue_start_drain(disk->queue);
}
EXPORT_SYMBOL_GPL(blk_mark_disk_dead);
@@ -620,18 +629,7 @@ void del_gendisk(struct gendisk *disk)
fsync_bdev(disk->part0);
__invalidate_device(disk->part0, true);
- /*
- * Fail any new I/O.
- */
- set_bit(GD_DEAD, &disk->state);
- if (test_bit(GD_OWNS_QUEUE, &disk->state))
- blk_queue_flag_set(QUEUE_FLAG_DYING, q);
- set_capacity(disk, 0);
-
- /*
- * Prevent new I/O from crossing bio_queue_enter().
- */
- blk_queue_start_drain(q);
+ blk_mark_disk_dead(disk);
if (!(disk->flags & GENHD_FL_HIDDEN)) {
sysfs_remove_link(&disk_to_dev(disk)->kobj, "bdi");