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From: Pavel Begunkov <[email protected]>
To: [email protected], [email protected],
	[email protected]
Cc: "David S . Miller" <[email protected]>,
	Jakub Kicinski <[email protected]>,
	Jonathan Lemon <[email protected]>,
	Willem de Bruijn <[email protected]>,
	Jens Axboe <[email protected]>, David Ahern <[email protected]>,
	[email protected], Pavel Begunkov <[email protected]>
Subject: [PATCH net-next v3 18/25] io_uring: account locked pages for non-fixed zc
Date: Tue,  5 Jul 2022 16:01:18 +0100	[thread overview]
Message-ID: <8b9d08b0ef818070564864036419550d5d767911.1656318994.git.asml.silence@gmail.com> (raw)
In-Reply-To: <[email protected]>

Fixed buffers are RLIMIT_MEMLOCK accounted, however it doesn't cover iovec
based zerocopy sends. Do the accounting on the io_uring side.

Signed-off-by: Pavel Begunkov <[email protected]>
---
 io_uring/net.c   | 1 +
 io_uring/notif.c | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/io_uring/net.c b/io_uring/net.c
index ef492f1360c8..d5b00e07e72b 100644
--- a/io_uring/net.c
+++ b/io_uring/net.c
@@ -834,6 +834,7 @@ int io_sendzc(struct io_kiocb *req, unsigned int issue_flags)
 	ret = import_single_range(WRITE, zc->buf, zc->len, &iov, &msg.msg_iter);
 	if (unlikely(ret))
 		return ret;
+	mm_account_pinned_pages(&notif->uarg.mmp, zc->len);
 
 	msg_flags = zc->msg_flags | MSG_ZEROCOPY;
 	if (issue_flags & IO_URING_F_NONBLOCK)
diff --git a/io_uring/notif.c b/io_uring/notif.c
index 2e9329f97d2c..0a03d04c010b 100644
--- a/io_uring/notif.c
+++ b/io_uring/notif.c
@@ -12,7 +12,13 @@ static void __io_notif_complete_tw(struct callback_head *cb)
 {
 	struct io_notif *notif = container_of(cb, struct io_notif, task_work);
 	struct io_ring_ctx *ctx = notif->ctx;
+	struct mmpin *mmp = &notif->uarg.mmp;
 
+	if (mmp->user) {
+		atomic_long_sub(mmp->num_pg, &mmp->user->locked_vm);
+		free_uid(mmp->user);
+		mmp->user = NULL;
+	}
 	if (likely(notif->task)) {
 		io_put_task(notif->task, 1);
 		notif->task = NULL;
-- 
2.36.1


  parent reply	other threads:[~2022-07-05 15:04 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-05 15:01 [PATCH net-next v3 00/25] io_uring zerocopy send Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 01/25] ipv4: avoid partial copy for zc Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 02/25] ipv6: " Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 03/25] skbuff: add SKBFL_DONT_ORPHAN flag Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 04/25] skbuff: carry external ubuf_info in msghdr Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 05/25] net: bvec specific path in zerocopy_sg_from_iter Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 06/25] net: optimise bvec-based zc page referencing Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 07/25] net: don't track pfmemalloc for managed frags Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 08/25] skbuff: don't mix ubuf_info of different types Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 09/25] ipv4/udp: support zc with managed data Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 10/25] ipv6/udp: " Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 11/25] tcp: " Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 12/25] io_uring: add zc notification infrastructure Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 13/25] io_uring: export task put Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 14/25] io_uring: cache struct io_notif Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 15/25] io_uring: complete notifiers in tw Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 16/25] io_uring: add notification slot registration Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 17/25] io_uring: wire send zc request type Pavel Begunkov
2022-07-05 15:01 ` Pavel Begunkov [this message]
2022-07-05 15:01 ` [PATCH net-next v3 19/25] io_uring: allow to pass addr into sendzc Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 20/25] io_uring: add rsrc referencing for notifiers Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 21/25] io_uring: sendzc with fixed buffers Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 22/25] io_uring: flush notifiers after sendzc Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 23/25] io_uring: rename IORING_OP_FILES_UPDATE Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 24/25] io_uring: add zc notification flush requests Pavel Begunkov
2022-07-05 15:01 ` [PATCH net-next v3 25/25] selftests/io_uring: test zerocopy send Pavel Begunkov
2022-07-05 15:04 ` [PATCH net-next v3 00/25] io_uring " Pavel Begunkov

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