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io_uring/rsrc: get rid of io_rsrc_node allocation cache

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It's not going to be needed in the fast path going forward, so kill it
off.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2024-10-26 06:43:44 -06:00
parent 7029acd8a9
commit fbbb8e991d
3 changed files with 7 additions and 20 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

3
include/linux/io_uring_types.h
View file

@ -370,9 +370,6 @@ struct io_ring_ctx {
struct io_rsrc_data *file_data;
struct io_rsrc_data *buf_data;
/* protected by ->uring_lock */
struct io_alloc_cache rsrc_node_cache;
u32 pers_next;
struct xarray personalities;

6
io_uring/io_uring.c
View file

@ -312,9 +312,7 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
INIT_LIST_HEAD(&ctx->sqd_list);
INIT_LIST_HEAD(&ctx->cq_overflow_list);
INIT_LIST_HEAD(&ctx->io_buffers_cache);
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_POLL_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));
@ -358,7 +356,6 @@ static __cold struct io_ring_ctx *io_ring_ctx_alloc(struct io_uring_params *p)
free_ref:
percpu_ref_exit(&ctx->refs);
err:
io_alloc_cache_free(&ctx->rsrc_node_cache, kfree);
io_alloc_cache_free(&ctx->apoll_cache, kfree);
io_alloc_cache_free(&ctx->netmsg_cache, io_netmsg_cache_free);
io_alloc_cache_free(&ctx->rw_cache, io_rw_cache_free);
@ -2740,7 +2737,6 @@ static __cold void io_ring_ctx_free(struct io_ring_ctx *ctx)
WARN_ON_ONCE(!list_empty(&ctx->ltimeout_list));
io_alloc_cache_free(&ctx->rsrc_node_cache, kfree);
if (ctx->mm_account) {
mmdrop(ctx->mm_account);
ctx->mm_account = NULL;

10
io_uring/rsrc.c
View file

@ -13,7 +13,6 @@
#include <uapi/linux/io_uring.h>
#include "io_uring.h"
#include "alloc_cache.h"
#include "openclose.h"
#include "rsrc.h"
#include "memmap.h"
@ -129,16 +128,12 @@ struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx, int type)
{
struct io_rsrc_node *node;
node = io_alloc_cache_get(&ctx->rsrc_node_cache);
if (!node) {
node = kzalloc(sizeof(*node), GFP_KERNEL);
if (!node)
return NULL;
}
if (node) {
node->ctx = ctx;
node->refs = 1;
node->type = type;
}
return node;
}
@ -487,7 +482,6 @@ void io_free_rsrc_node(struct io_rsrc_node *node)
break;
}
if (!io_alloc_cache_put(&ctx->rsrc_node_cache, node))
kfree(node);
}