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liburing: return correct ring size for large CQE's

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Return the correct ring_size when large CQE's are used.

Signed-off-by: Stefan Roesch <shr@fb.com>
Link: https://lore.kernel.org/r/20220425182639.2446370-4-shr@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Stefan Roesch
2022-04-25 11:26:36 -07:00
committed by Jens Axboe
parent 92e42ff6bc
commit 16850a211c
1 changed files with 5 additions and 2 deletions
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src/setup.c
+5 -2
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@@ -257,8 +257,11 @@ static size_t rings_size(struct io_uring_params *p, unsigned entries,
{
size_t pages, sq_size, cq_size;
cq_size = KRING_SIZE;
cq_size += cq_entries * sizeof(struct io_uring_cqe);
cq_size = sizeof(struct io_uring_cqe);
if (p->flags & IORING_SETUP_CQE32)
cq_size += sizeof(struct io_uring_cqe);
cq_size *= cq_entries;
cq_size += KRING_SIZE;
cq_size = (cq_size + 63) & ~63UL;
pages = (size_t) 1 << npages(cq_size, page_size);