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Message-Id: <19cad183acc3a44b17b76c1719ad30c80aeff1ef.1660124059.git.asml.silence@gmail.com> Date: Wed, 10 Aug 2022 16:49:18 +0100 From: Pavel Begunkov <asml.silence@...il.com> To: io-uring@...r.kernel.org, netdev@...r.kernel.org Cc: Jens Axboe <axboe@...nel.dk>, "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, kernel-team@...com, linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org, Wei Liu <wei.liu@...nel.org>, Paul Durrant <paul@....org>, kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org, "Michael S . Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, Pavel Begunkov <asml.silence@...il.com> Subject: [RFC net-next io_uring 10/11] io_uring/notif: mark notifs with UARGFL_CALLER_PINNED We always keep references to active notifications and drop them only when we flush, so they're always pinned during sock_sendmsg() and we can add UARGFL_CALLER_PINNED. Signed-off-by: Pavel Begunkov <asml.silence@...il.com> --- io_uring/notif.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/io_uring/notif.c b/io_uring/notif.c index 5661681b3b44..dd346ea67580 100644 --- a/io_uring/notif.c +++ b/io_uring/notif.c @@ -66,7 +66,7 @@ struct io_kiocb *io_alloc_notif(struct io_ring_ctx *ctx, nd = io_notif_to_data(notif); nd->account_pages = 0; nd->uarg.skb_flags = SKBFL_ZEROCOPY_FRAG | SKBFL_DONT_ORPHAN; - nd->uarg.flags = 0; + nd->uarg.flags = UARGFL_CALLER_PINNED; nd->uarg.callback = io_uring_tx_zerocopy_callback; /* master ref owned by io_notif_slot, will be dropped on flush */ refcount_set(&nd->uarg.refcnt, 1); -- 2.37.0
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