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io_uring/rsrc: add empty flag in rsrc_node

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Unless a node was flushed by io_rsrc_ref_quiesce(), it'll carry a
resource. Replace ->inline_items with an empty flag, which is
initialised to false and only raised in io_rsrc_ref_quiesce().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/75d384c9d2252e12af73b9cf8a44e1699106aeb1.1681822823.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2023-04-18 14:06:37 +01:00 committed by Jens Axboe
parent c376644fb9
commit 26147da37f
2 changed files with 4 additions and 4 deletions
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6
io_uring/rsrc.c
View File

@ -154,7 +154,7 @@ static void __io_rsrc_put_work(struct io_rsrc_node *ref_node)
{
struct io_rsrc_data *rsrc_data = ref_node->rsrc_data;
if (likely(ref_node->inline_items))
if (likely(!ref_node->empty))
io_rsrc_put_work_one(rsrc_data, &ref_node->item);
io_rsrc_node_destroy(rsrc_data->ctx, ref_node);
@ -199,7 +199,7 @@ struct io_rsrc_node *io_rsrc_node_alloc(struct io_ring_ctx *ctx)
}
ref_node->rsrc_data = NULL;
ref_node->inline_items = 0;
ref_node->empty = 0;
ref_node->refs = 1;
return ref_node;
}
@ -218,6 +218,7 @@ __cold static int io_rsrc_ref_quiesce(struct io_rsrc_data *data,
backup = io_rsrc_node_alloc(ctx);
if (!backup)
return -ENOMEM;
ctx->rsrc_node->empty = true;
ctx->rsrc_node->rsrc_data = data;
list_add_tail(&ctx->rsrc_node->node, &ctx->rsrc_ref_list);
io_put_rsrc_node(ctx, ctx->rsrc_node);
@ -649,7 +650,6 @@ int io_queue_rsrc_removal(struct io_rsrc_data *data, unsigned idx, void *rsrc)
node->item.rsrc = rsrc;
node->item.tag = *tag_slot;
node->inline_items = 1;
*tag_slot = 0;
node->rsrc_data = data;

2
io_uring/rsrc.h
View File

@ -43,7 +43,7 @@ struct io_rsrc_node {
struct io_rsrc_data *rsrc_data;
};
int refs;
int inline_items;
bool empty;
struct list_head node;
struct io_rsrc_put item;
};