diff options
| author | Christoph Hellwig <hch@lst.de> | 2022-02-17 10:52:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-02-23 14:03:15 +0300 |
| commit | e65450a12cf4f3773b2607e305807f917e0bf239 (patch) | |
| tree | 6c6ec616f719018de45d30e4897d10396905682f /block | |
| parent | e1dce8e127fdaa9039505a52b08b93863caac2a2 (diff) | |
| download | linux-e65450a12cf4f3773b2607e305807f917e0bf239.tar.xz | |
block: fix surprise removal for drivers calling blk_set_queue_dying
commit 7a5428dcb7902700b830e912feee4e845df7c019 upstream.
Various block drivers call blk_set_queue_dying to mark a disk as dead due
to surprise removal events, but since commit 8e141f9eb803 that doesn't
work given that the GD_DEAD flag needs to be set to stop I/O.
Replace the driver calls to blk_set_queue_dying with a new (and properly
documented) blk_mark_disk_dead API, and fold blk_set_queue_dying into the
only remaining caller.
Fixes: 8e141f9eb803 ("block: drain file system I/O on del_gendisk")
Reported-by: Markus Blöchl <markus.bloechl@ipetronik.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Link: https://lore.kernel.org/r/20220217075231.1140-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 10 | ||||
| -rw-r--r-- | block/genhd.c | 14 |
2 files changed, 16 insertions, 8 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index d42a0f3ff736..42ac3a985c2d 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -350,13 +350,6 @@ void blk_queue_start_drain(struct request_queue *q) wake_up_all(&q->mq_freeze_wq); } -void blk_set_queue_dying(struct request_queue *q) -{ - blk_queue_flag_set(QUEUE_FLAG_DYING, q); - blk_queue_start_drain(q); -} -EXPORT_SYMBOL_GPL(blk_set_queue_dying); - /** * blk_cleanup_queue - shutdown a request queue * @q: request queue to shutdown @@ -374,7 +367,8 @@ void blk_cleanup_queue(struct request_queue *q) WARN_ON_ONCE(blk_queue_registered(q)); /* mark @q DYING, no new request or merges will be allowed afterwards */ - blk_set_queue_dying(q); + blk_queue_flag_set(QUEUE_FLAG_DYING, q); + blk_queue_start_drain(q); blk_queue_flag_set(QUEUE_FLAG_NOMERGES, q); blk_queue_flag_set(QUEUE_FLAG_NOXMERGES, q); diff --git a/block/genhd.c b/block/genhd.c index de789d1a1e3d..2dcedbe4ef04 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -545,6 +545,20 @@ out_free_ext_minor: EXPORT_SYMBOL(device_add_disk); /** + * blk_mark_disk_dead - mark a disk as dead + * @disk: disk to mark as dead + * + * Mark as disk as dead (e.g. surprise removed) and don't accept any new I/O + * to this disk. + */ +void blk_mark_disk_dead(struct gendisk *disk) +{ + set_bit(GD_DEAD, &disk->state); + blk_queue_start_drain(disk->queue); +} +EXPORT_SYMBOL_GPL(blk_mark_disk_dead); + +/** * del_gendisk - remove the gendisk * @disk: the struct gendisk to remove * |