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io_uring-5.10-2020-11-13

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Merge tag 'io_uring-5.10-2020-11-13' of git://git.kernel.dk/linux-block

Pull io_uring fix from Jens Axboe:
 "A single fix in here, for a missed rounding case at setup time, which
  caused an otherwise legitimate setup case to return -EINVAL if used
  with unaligned ring size values"

* tag 'io_uring-5.10-2020-11-13' of git://git.kernel.dk/linux-block:
  io_uring: round-up cq size before comparing with rounded sq size
This commit is contained in:
Linus Torvalds 2020-11-13 15:05:19 -08:00
commit 1b1e9262ca
1 changed files with 1 additions and 1 deletions
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2
fs/io_uring.c
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@ -9226,6 +9226,7 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p,
* to a power-of-two, if it isn't already. We do NOT impose * to a power-of-two, if it isn't already. We do NOT impose
* any cq vs sq ring sizing. * any cq vs sq ring sizing.
*/ */
p->cq_entries = roundup_pow_of_two(p->cq_entries);
if (p->cq_entries < p->sq_entries) if (p->cq_entries < p->sq_entries)
return -EINVAL; return -EINVAL;
if (p->cq_entries > IORING_MAX_CQ_ENTRIES) { if (p->cq_entries > IORING_MAX_CQ_ENTRIES) {
@ -9233,7 +9234,6 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p,
return -EINVAL; return -EINVAL;
p->cq_entries = IORING_MAX_CQ_ENTRIES; p->cq_entries = IORING_MAX_CQ_ENTRIES;
} }
p->cq_entries = roundup_pow_of_two(p->cq_entries);
} else { } else {
p->cq_entries = 2 * p->sq_entries; p->cq_entries = 2 * p->sq_entries;
} }