public inbox for [email protected]
 help / color / mirror / Atom feed
From: Jens Axboe <[email protected]>
To: [email protected]
Cc: [email protected], [email protected],
	Jens Axboe <[email protected]>
Subject: [PATCH 2/5] io_uring: add 'io_comp_state' to struct io_submit_state
Date: Tue, 23 Jun 2020 09:16:26 -0600	[thread overview]
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>

No functional changes in this patch, just in preparation for passing back
pending completions to the caller and completing them in a batched
fashion.

Signed-off-by: Jens Axboe <[email protected]>
---
 fs/io_uring.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 0cdf088c56cd..1da5269c9ef7 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -678,6 +678,12 @@ struct io_kiocb {
 
 #define IO_IOPOLL_BATCH			8
 
+struct io_comp_state {
+	unsigned int		nr;
+	struct list_head	list;
+	struct io_ring_ctx	*ctx;
+};
+
 struct io_submit_state {
 	struct blk_plug		plug;
 
@@ -687,6 +693,11 @@ struct io_submit_state {
 	void			*reqs[IO_IOPOLL_BATCH];
 	unsigned int		free_reqs;
 
+	/*
+	 * Batch completion logic
+	 */
+	struct io_comp_state	comp;
+
 	/*
 	 * File reference cache
 	 */
@@ -5999,12 +6010,15 @@ static void io_submit_state_end(struct io_submit_state *state)
  * Start submission side cache.
  */
 static void io_submit_state_start(struct io_submit_state *state,
-				  unsigned int max_ios)
+				  struct io_ring_ctx *ctx, unsigned int max_ios)
 {
 	blk_start_plug(&state->plug);
 #ifdef CONFIG_BLOCK
 	state->plug.nowait = true;
 #endif
+	state->comp.nr = 0;
+	INIT_LIST_HEAD(&state->comp.list);
+	state->comp.ctx = ctx;
 	state->free_reqs = 0;
 	state->file = NULL;
 	state->ios_left = max_ios;
@@ -6139,7 +6153,7 @@ static int io_submit_sqes(struct io_ring_ctx *ctx, unsigned int nr,
 	if (!percpu_ref_tryget_many(&ctx->refs, nr))
 		return -EAGAIN;
 
-	io_submit_state_start(&state, nr);
+	io_submit_state_start(&state, ctx, nr);
 
 	ctx->ring_fd = ring_fd;
 	ctx->ring_file = ring_file;
-- 
2.27.0


  parent reply	other threads:[~2020-06-23 15:16 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-23 15:16 [PATCHSET 0/5] Allow batching of inline completions Jens Axboe
2020-06-23 15:16 ` [PATCH 1/5] io_uring: provide generic io_req_complete() helper Jens Axboe
2020-06-23 15:16 ` Jens Axboe [this message]
2020-06-23 15:16 ` [PATCH 3/5] io_uring: pass down completion state on the issue side Jens Axboe
2020-06-23 15:16 ` [PATCH 4/5] io_uring: pass in completion state to appropriate issue side handlers Jens Axboe
2020-06-23 15:16 ` [PATCH 5/5] io_uring: enable READ/WRITE to use deferred completions Jens Axboe

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    [email protected] \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox