[Drbd-dev] [PATCH AUTOSEL 5.15 32/41] drbd: set QUEUE_FLAG_STABLE_WRITES

Sasha Levin sashal at kernel.org
Tue Apr 12 02:46:44 CEST 2022

From: Christoph Böhmwalder <christoph at boehmwalder.at>

[ Upstream commit 286901941fd18a52b2138fddbbf589ad3639eb00 ]

We want our pages not to change while they are being written.

Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder at linbit.com>
Signed-off-by: Jens Axboe <axboe at kernel.dk>
Signed-off-by: Sasha Levin <sashal at kernel.org>
 drivers/block/drbd/drbd_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 55234a558e98..548e0dd53528 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2737,6 +2737,7 @@ enum drbd_ret_code drbd_create_device(struct drbd_config_context *adm_ctx, unsig
 	sprintf(disk->disk_name, "drbd%d", minor);
 	disk->private_data = device;
+	blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, disk->queue);
 	blk_queue_write_cache(disk->queue, true, true);
 	/* Setting the max_hw_sectors to an odd value of 8kibyte here
 	   This triggers a max_bio_size message upon first attach or connect */

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