From 5eaee6e9c8f9940ecee93678972774fb8dd450d5 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Wed, 6 Mar 2024 15:03:31 +0100 Subject: [PATCH] drbd: split out a drbd_discard_supported helper MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Add a helper to check if discard is supported for a given connection / backing device combination. Signed-off-by: Christoph Hellwig Reviewed-by: Philipp Reisner Reviewed-by: Lars Ellenberg Tested-by: Christoph Böhmwalder Link: https://lore.kernel.org/r/20240306140332.623759-7-philipp.reisner@linbit.com Signed-off-by: Jens Axboe --- drivers/block/drbd/drbd_nl.c | 25 +++++++++++++++++-------- 1 file changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index a79b7fe5335de..94ed2b3ea6361 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -1231,24 +1231,33 @@ static unsigned int drbd_max_discard_sectors(struct drbd_connection *connection) return AL_EXTENT_SIZE >> 9; } -static void decide_on_discard_support(struct drbd_device *device, +static bool drbd_discard_supported(struct drbd_connection *connection, struct drbd_backing_dev *bdev) { - struct drbd_connection *connection = - first_peer_device(device)->connection; - struct request_queue *q = device->rq_queue; - unsigned int max_discard_sectors; - if (bdev && !bdev_max_discard_sectors(bdev->backing_bdev)) - goto not_supported; + return false; if (connection->cstate >= C_CONNECTED && !(connection->agreed_features & DRBD_FF_TRIM)) { drbd_info(connection, "peer DRBD too old, does not support TRIM: disabling discards\n"); - goto not_supported; + return false; } + return true; +} + +static void decide_on_discard_support(struct drbd_device *device, + struct drbd_backing_dev *bdev) +{ + struct drbd_connection *connection = + first_peer_device(device)->connection; + struct request_queue *q = device->rq_queue; + unsigned int max_discard_sectors; + + if (!drbd_discard_supported(connection, bdev)) + goto not_supported; + /* * We don't care for the granularity, really. * -- 2.30.2