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md: switch to ->check_events for media change notifications

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[ Upstream commit a564e23f0f99759f453dbefcb9160dec6d99df96 ]

md is the last driver using the legacy media_changed method.  Switch
it over to (not so) new ->clear_events approach, which also removes the
need for the ->revalidate_disk method.

Signed-off-by: Christoph Hellwig <hch@lst.de>
[axboe: remove unused 'bdops' variable in disk_clear_events()]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Stable-dep-of: 9674f54e41ff ("md: Don't clear MD_CLOSING when the raid is about to stop")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christoph Hellwig
2020-07-08 14:25:41 +02:00
committed by Sasha Levin
parent b86af4d77a
commit dc51c01a3d
4 changed files with 10 additions and 23 deletions
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8
block/genhd.c
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@@ -1771,18 +1771,12 @@ void disk_flush_events(struct gendisk *disk, unsigned int mask)
*/
unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask)
{
const struct block_device_operations *bdops = disk->fops;
struct disk_events *ev = disk->ev;
unsigned int pending;
unsigned int clearing = mask;
if (!ev) {
/* for drivers still using the old ->media_changed method */
if ((mask & DISK_EVENT_MEDIA_CHANGE) &&
bdops->media_changed && bdops->media_changed(disk))
return DISK_EVENT_MEDIA_CHANGE;
if (!ev)
return 0;
}
disk_block_events(disk);