* [PATCH for-next] io_uring: simplify io_alloc_req()
@ 2020-09-30 19:57 Pavel Begunkov
0 siblings, 0 replies; only message in thread
From: Pavel Begunkov @ 2020-09-30 19:57 UTC (permalink / raw)
To: Jens Axboe, io-uring
Extract common code from if/else branches. That is cleaner and optimised
even better.
Signed-off-by: Pavel Begunkov <[email protected]>
---
fs/io_uring.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 33892c992b34..e13692f692f5 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1568,10 +1568,8 @@ static struct io_kiocb *io_get_fallback_req(struct io_ring_ctx *ctx)
static struct io_kiocb *io_alloc_req(struct io_ring_ctx *ctx,
struct io_submit_state *state)
{
- gfp_t gfp = GFP_KERNEL | __GFP_NOWARN;
- struct io_kiocb *req;
-
if (!state->free_reqs) {
+ gfp_t gfp = GFP_KERNEL | __GFP_NOWARN;
size_t sz;
int ret;
@@ -1588,14 +1586,11 @@ static struct io_kiocb *io_alloc_req(struct io_ring_ctx *ctx,
goto fallback;
ret = 1;
}
- state->free_reqs = ret - 1;
- req = state->reqs[ret - 1];
- } else {
- state->free_reqs--;
- req = state->reqs[state->free_reqs];
+ state->free_reqs = ret;
}
- return req;
+ state->free_reqs--;
+ return state->reqs[state->free_reqs];
fallback:
return io_get_fallback_req(ctx);
}
--
2.24.0
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