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| author | Hui Peng <benquike@gmail.com> | 2026-09-19 20:35:18 +0000 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2026-09-21 10:50:07 -0600 |
| commit | ab5853c068b1d654d7c4a535417ca3eb3e67403b (patch) | |
| tree | 333726624c6f0b06bae908821e8e7b8940ec075d /tools/lib/python | |
| parent | 2107751744287996a9bbcf40b5055a5b7fe30b5c (diff) | |
| download | linux-next-ab5853c068b1d654d7c4a535417ca3eb3e67403b.tar.gz linux-next-ab5853c068b1d654d7c4a535417ca3eb3e67403b.zip | |
io_uring: fix free entry check for 32b CQEs on CQE32 rings
On CQE32 rings, len is in units of 32b CQEs when io_cqe_cache_refill()
checks for free entries, so requiring cqe32 + 1 of them means insisting
on 2 free CQEs where 1 is enough, and a ring with a single free entry
needlessly goes to overflow.
Check for a free CQE directly in that case, and keep the cqe32 + 1 check
for CQE_MIXED where the units are 16b.
Fixes: e26dca67fde1 ("io_uring: add support for IORING_SETUP_CQE_MIXED")
Assisted-by: LLM
Signed-off-by: Hui Peng <benquike@gmail.com>
Link: https://patch.msgid.link/20260919203516.2581409-1-benquike@gmail.com
[axboe: split from Hui's original patch, edited commit message]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/lib/python')
0 files changed, 0 insertions, 0 deletions