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Code Issues Releases Wiki Activity

io_uring: flag new native workers with IORING_FEAT_NATIVE_WORKERS

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A few reasons to do this:

- The naming of the manager and worker have changed. That's a user visible
  change, so makes sense to flag it.

- Opening certain files that use ->signal (like /proc/self or /dev/tty)
  now works, and the flag tells the application upfront that this is the
  case.

- Related to the above, using signalfd will now work as well.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2021-02-20 11:55:28 -07:00
parent e54937963f
commit 1c0aa1fae1
2 changed files with 2 additions and 1 deletions
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2
fs/io_uring.c
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@ -9467,7 +9467,7 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p,
IORING_FEAT_SUBMIT_STABLE | IORING_FEAT_RW_CUR_POS |
IORING_FEAT_CUR_PERSONALITY | IORING_FEAT_FAST_POLL |
IORING_FEAT_POLL_32BITS | IORING_FEAT_SQPOLL_NONFIXED |
IORING_FEAT_EXT_ARG;
IORING_FEAT_EXT_ARG | IORING_FEAT_NATIVE_WORKERS;
if (copy_to_user(params, p, sizeof(*p))) {
ret = -EFAULT;

1
include/uapi/linux/io_uring.h
View file

@ -262,6 +262,7 @@ struct io_uring_params {
#define IORING_FEAT_POLL_32BITS (1U << 6)
#define IORING_FEAT_SQPOLL_NONFIXED (1U << 7)
#define IORING_FEAT_EXT_ARG (1U << 8)
#define IORING_FEAT_NATIVE_WORKERS (1U << 9)
/*
* io_uring_register(2) opcodes and arguments