diff options
| author | Caleb Sander Mateos <csander@purestorage.com> | 2025-09-17 19:49:44 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-09-20 06:36:27 -0600 |
| commit | 692cf47e1af39f86f28069db5ca6b00a7d2daddc (patch) | |
| tree | 0db792bed9af0059e24d338719eb682773a420cb | |
| parent | 8a81926e45670c6d9b6e73e0482485d5c9a627e6 (diff) | |
ublk: don't access ublk_queue in ublk_register_io_buf()
For ublk servers with many ublk queues, accessing the ublk_queue in
ublk_register_io_buf() is a frequent cache miss. Get the flags from the
ublk_device instead, which is accessed earlier in
ublk_ch_uring_cmd_local().
Signed-off-by: Caleb Sander Mateos <csander@purestorage.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | drivers/block/ublk_drv.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c index cb51f3f3cd33..751ec62655f8 100644 --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -2133,7 +2133,7 @@ static int ublk_register_io_buf(struct io_uring_cmd *cmd, struct request *req; int ret; - if (!ublk_support_zero_copy(ubq)) + if (!ublk_dev_support_zero_copy(ub)) return -EINVAL; req = __ublk_check_and_get_req(ub, ubq, io, 0); |