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ublk: don't access ublk_queue in ublk_register_io_buf()
authorCaleb Sander Mateos <csander@purestorage.com>
Thu, 18 Sep 2025 01:49:44 +0000 (19:49 -0600)
committerJens Axboe <axboe@kernel.dk>
Sat, 20 Sep 2025 12:36:27 +0000 (06:36 -0600)
commit692cf47e1af39f86f28069db5ca6b00a7d2daddc
tree0db792bed9af0059e24d338719eb682773a420cbtree
parent8a81926e45670c6d9b6e73e0482485d5c9a627e6commit | 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>
drivers/block/ublk_drv.c diff | blob | history
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