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liburing: increase mmap size for large CQE's

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This doubles the mmap size for large CQE's.

Signed-off-by: Stefan Roesch <shr@fb.com>
Link: https://lore.kernel.org/r/20220425182639.2446370-3-shr@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Stefan Roesch
2022-04-25 11:26:35 -07:00
committed by Jens Axboe
parent d84592704d
commit 92e42ff6bc
1 changed files with 5 additions and 1 deletions
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src/setup.c
+5 -1
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@@ -21,8 +21,12 @@ static int io_uring_mmap(int fd, struct io_uring_params *p,
size_t size;
int ret;
size = sizeof(struct io_uring_cqe);
if (p->flags & IORING_SETUP_CQE32)
size += sizeof(struct io_uring_cqe);
sq->ring_sz = p->sq_off.array + p->sq_entries * sizeof(unsigned);
cq->ring_sz = p->cq_off.cqes + p->cq_entries * sizeof(struct io_uring_cqe);
cq->ring_sz = p->cq_off.cqes + p->cq_entries * size;
if (p->features & IORING_FEAT_SINGLE_MMAP) {
if (cq->ring_sz > sq->ring_sz)