From: Stefan Roesch <[email protected]>
To: <[email protected]>, <[email protected]>
Cc: <[email protected]>, <[email protected]>
Subject: [PATCH v3 2/6] liburing: increase mmap size for large CQE's
Date: Mon, 25 Apr 2022 11:26:35 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
This doubles the mmap size for large CQE's.
Signed-off-by: Stefan Roesch <[email protected]>
---
src/setup.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/setup.c b/src/setup.c
index aec8b33..dd6a712 100644
--- a/src/setup.c
+++ b/src/setup.c
@@ -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)
--
2.30.2
next prev parent reply other threads:[~2022-04-25 18:26 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-25 18:26 [PATCH v3 0/6] liburing: add support for large CQE sizes Stefan Roesch
2022-04-25 18:26 ` [PATCH v3 1/6] liburing: Update io_uring.h with large CQE kernel changes Stefan Roesch
2022-04-25 18:26 ` Stefan Roesch [this message]
2022-04-25 18:26 ` [PATCH v3 3/6] liburing: return correct ring size for large CQE's Stefan Roesch
2022-04-25 18:26 ` [PATCH v3 4/6] liburing: index large CQE's correctly Stefan Roesch
2022-04-25 18:26 ` [PATCH v3 5/6] liburing: add large CQE tests to nop test Stefan Roesch
2022-04-25 18:26 ` [PATCH v3 6/6] liburing: Test all configurations with NOP test Stefan Roesch
2022-04-25 18:45 ` [PATCH v3 0/6] liburing: add support for large CQE sizes Jens Axboe
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