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Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 X-Mailman-Approved-At: Tue, 29 Mar 2022 05:32:01 +0000 Subject: [dm-devel] [PATCH 2/4] dm: Process .io_hints for drivers not having underlying devices X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com This makes dm_calculate_queue_limits() sets the hints also for drivers, which do not have underlying devices. This is useful for dm-qcow2 driver, that wants to have incomming requests are likely splitted by QCOW2 cluster size alignment. Signed-off-by: Kirill Tkhai --- drivers/md/dm-table.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index e43096cfe9e2..aa2e85bef6e7 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1660,8 +1660,11 @@ int dm_calculate_queue_limits(struct dm_table *table, ti = dm_table_get_target(table, i); - if (!ti->type->iterate_devices) + if (!ti->type->iterate_devices) { + if (ti->type->io_hints) + ti->type->io_hints(ti, &ti_limits); goto combine_limits; + } /* * Combine queue limits of all the devices this target uses.