io_uring/poll: shrink alloc cache size to 32

This should be plenty, rather than the default of 128, and matches what
we have on the rsrc and futex side as well.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c
index 1d453eb..8e53b93 100644 (file)
--- a/io_uring/io_uring.c
+++ b/io_uring/io_uring.c
@@ -308,7 +308,7 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
        INIT_HLIST_HEAD(&ctx->io_buf_list);
        ret = io_alloc_cache_init(&ctx->rsrc_node_cache, IO_NODE_ALLOC_CACHE_MAX,
                            sizeof(struct io_rsrc_node));
-       ret |= io_alloc_cache_init(&ctx->apoll_cache, IO_ALLOC_CACHE_MAX,
+       ret |= io_alloc_cache_init(&ctx->apoll_cache, IO_POLL_ALLOC_CACHE_MAX,
                            sizeof(struct async_poll));
        ret |= io_alloc_cache_init(&ctx->netmsg_cache, IO_ALLOC_CACHE_MAX,
                            sizeof(struct io_async_msghdr));

diff --git a/io_uring/poll.h b/io_uring/poll.h
index 5c240f1..b0e3745 100644 (file)
--- a/io_uring/poll.h
+++ b/io_uring/poll.h
@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 
+#define IO_POLL_ALLOC_CACHE_MAX 32
+
 enum {
        IO_APOLL_OK,
        IO_APOLL_ABORTED,