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authorChristoph Hellwig <hch@lst.de>2017-10-05 22:22:52 +0300
committerJens Axboe <axboe@kernel.dk>2017-10-06 00:22:59 +0300
commit5fdee2127faa77c9c91862ad5e001dfab7013e92 (patch)
tree6555789579fb2e9b44bed63a6856ed4870bbe4fc /drivers/md/dm.c
parentb35bd0d9f8a8ea17aae40893e18274d191a2d2c5 (diff)
downloadlinux-5fdee2127faa77c9c91862ad5e001dfab7013e92.tar.xz
block: remove QUEUE_FLAG_STACKABLE
We already have a queue_is_rq_based helper to check if a request_queue is request based, so we can remove the flag for it. Acked-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm.c')
-rw-r--r--drivers/md/dm.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 6e54145969c5..8d07ad61221c 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1613,17 +1613,6 @@ static void dm_wq_work(struct work_struct *work);
void dm_init_md_queue(struct mapped_device *md)
{
/*
- * Request-based dm devices cannot be stacked on top of bio-based dm
- * devices. The type of this dm device may not have been decided yet.
- * The type is decided at the first table loading time.
- * To prevent problematic device stacking, clear the queue flag
- * for request stacking support until then.
- *
- * This queue is new, so no concurrency on the queue_flags.
- */
- queue_flag_clear_unlocked(QUEUE_FLAG_STACKABLE, md->queue);
-
- /*
* Initialize data that will only be used by a non-blk-mq DM queue
* - must do so here (in alloc_dev callchain) before queue is used
*/