From 163d4baaebe39c0e56d9c08597eab7b3ae0bf334 Mon Sep 17 00:00:00 2001 From: Toshi Kani Date: Thu, 23 Jun 2016 17:05:50 -0400 Subject: block: add QUEUE_FLAG_DAX for devices to advertise their DAX support Currently, presence of direct_access() in block_device_operations indicates support of DAX on its block device. Because block_device_operations is instantiated with 'const', this DAX capablity may not be enabled conditinally. In preparation for supporting DAX to device-mapper devices, add QUEUE_FLAG_DAX to request_queue flags to advertise their DAX support. This will allow to set the DAX capability based on how mapped device is composed. Signed-off-by: Toshi Kani Acked-by: Dan Williams Signed-off-by: Mike Snitzer Cc: Jens Axboe Cc: Ross Zwisler Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Signed-off-by: Jens Axboe --- drivers/nvdimm/pmem.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/nvdimm') diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c index 608fc4464574..53b701b2f73e 100644 --- a/drivers/nvdimm/pmem.c +++ b/drivers/nvdimm/pmem.c @@ -283,6 +283,7 @@ static int pmem_attach_disk(struct device *dev, blk_queue_max_hw_sectors(q, UINT_MAX); blk_queue_bounce_limit(q, BLK_BOUNCE_ANY); queue_flag_set_unlocked(QUEUE_FLAG_NONROT, q); + queue_flag_set_unlocked(QUEUE_FLAG_DAX, q); q->queuedata = pmem; disk = alloc_disk_node(0, nid); -- cgit v1.2.3