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From: Jens Axboe <axboe@kernel.dk>
To: io-uring@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 2/3] io_uring: put flag checking for needing req cleanup in one spot
Date: Thu, 15 Apr 2021 19:25:22 -0600	[thread overview]
Message-ID: <20210416012523.724073-3-axboe@kernel.dk> (raw)
In-Reply-To: <20210416012523.724073-1-axboe@kernel.dk>

We have this in two spots right now, which is a bit fragile. In
preparation for moving REQ_F_POLLED cleanup into the same spot, move
the check into io_clean_op() itself so we only have it once.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 fs/io_uring.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 87ce3dbcd4ca..a668d6a3319c 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1601,8 +1601,7 @@ static void io_req_complete_post(struct io_kiocb *req, long res,
 static void io_req_complete_state(struct io_kiocb *req, long res,
 				  unsigned int cflags)
 {
-	if (req->flags & (REQ_F_NEED_CLEANUP | REQ_F_BUFFER_SELECTED))
-		io_clean_op(req);
+	io_clean_op(req);
 	req->result = res;
 	req->compl.cflags = cflags;
 	req->flags |= REQ_F_COMPLETE_INLINE;
@@ -1713,16 +1712,12 @@ static void io_dismantle_req(struct io_kiocb *req)
 
 	if (!(flags & REQ_F_FIXED_FILE))
 		io_put_file(req->file);
-	if (flags & (REQ_F_NEED_CLEANUP | REQ_F_BUFFER_SELECTED |
-		     REQ_F_INFLIGHT)) {
-		io_clean_op(req);
+	io_clean_op(req);
+	if (req->flags & REQ_F_INFLIGHT) {
+		struct io_uring_task *tctx = req->task->io_uring;
 
-		if (req->flags & REQ_F_INFLIGHT) {
-			struct io_uring_task *tctx = req->task->io_uring;
-
-			atomic_dec(&tctx->inflight_tracked);
-			req->flags &= ~REQ_F_INFLIGHT;
-		}
+		atomic_dec(&tctx->inflight_tracked);
+		req->flags &= ~REQ_F_INFLIGHT;
 	}
 	if (req->fixed_rsrc_refs)
 		percpu_ref_put(req->fixed_rsrc_refs);
@@ -5995,6 +5990,8 @@ static int io_req_defer(struct io_kiocb *req)
 
 static void io_clean_op(struct io_kiocb *req)
 {
+	if (!(req->flags & (REQ_F_BUFFER_SELECTED | REQ_F_NEED_CLEANUP)))
+		return;
 	if (req->flags & REQ_F_BUFFER_SELECTED) {
 		switch (req->opcode) {
 		case IORING_OP_READV:
-- 
2.31.1


  parent reply	other threads:[~2021-04-16  1:25 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-16  1:25 [PATCH 0/3] Misc 5.13 fixes Jens Axboe
2021-04-16  1:25 ` [PATCH 1/3] io_uring: disable multishot poll for double poll add cases Jens Axboe
2021-04-16  1:25 ` Jens Axboe [this message]
2021-04-16 13:25   ` [PATCH 2/3] io_uring: put flag checking for needing req cleanup in one spot Pavel Begunkov
2021-04-16 15:42     ` Jens Axboe
2021-04-16  1:25 ` [PATCH 3/3] io_uring: tie req->apoll to request lifetime Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2021-04-16 16:10 [PATCH v2 0/3] Misc 5.13 fixes Jens Axboe
2021-04-16 16:10 ` [PATCH 2/3] io_uring: put flag checking for needing req cleanup in one spot Jens Axboe
2021-04-16 23:37   ` Pavel Begunkov

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