[PATCH v2 0/3] io_uring/uring_cmd: avoid double indirect call in task work dispatch

Caleb Sander Mateos
2025-10-23T20:18:51Z

Define uring_cmd implementation callback functions to have the
io_req_tw_func_t signature to avoid the additional indirect call and
save 8 bytes in struct io_uring_cmd. Additionally avoid the
io_should_terminate_tw() computation in callbacks that don't need it.

v2:
- Define the uring_cmd callbacks with the io_req_tw_func_t signature
to avoid the macro defining a hidden wrapper function (Christoph)

Caleb Sander Mateos (3):
io_uring: expose io_should_terminate_tw()
io_uring/uring_cmd: call io_should_terminate_tw() when needed
io_uring/uring_cmd: avoid double indirect call in task work dispatch

block/ioctl.c | 4 +++-
drivers/block/ublk_drv.c | 15 +++++++++------
drivers/nvme/host/ioctl.c | 5 +++--
fs/btrfs/ioctl.c | 4 +++-
fs/fuse/dev_uring.c | 7 ++++---
include/linux/io_uring.h | 14 ++++++++++++++
include/linux/io_uring/cmd.h | 23 +++++++++++++----------
include/linux/io_uring_types.h | 1 -
io_uring/io_uring.h | 13 -------------
io_uring/uring_cmd.c | 17 ++---------------
10 files changed, 51 insertions(+), 52 deletions(-)

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2.45.2