[RFC net-next io_uring 10/11] io_uring/notif: mark notifs with UARGFL_CALLER_PINNED

[Pavel Begunkov <asml.silence@xxxxxxxxx>]

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@xxxxxxxxx>
---
 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