diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-03-06 15:03:31 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-03-06 08:30:34 -0700 |
| commit | 5eaee6e9c8f9940ecee93678972774fb8dd450d5 (patch) | |
| tree | ac7f7b57e4c96a67d236a27f97fc1bbddd0dcdb5 /drivers/block | |
| parent | e3992e02c970f6eb803b98b9f733cad40f190161 (diff) | |
drbd: split out a drbd_discard_supported helper
Add a helper to check if discard is supported for a given connection /
backing device combination.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Philipp Reisner <philipp.reisner@linbit.com>
Reviewed-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Tested-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Link: https://lore.kernel.org/r/20240306140332.623759-7-philipp.reisner@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index a79b7fe5335d..94ed2b3ea636 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. * |