man/io_uring_enter.2: mention IORING_ENTER_EXT_ARG_REG

Signed-off-by: Jens Axboe <axboe@kernel.dk>
axboe · Nov 1, 2024 · 4936d1c · 4936d1c
1 parent 9f55051
commit 4936d1c
Showing 1 changed file with 13 additions and 0 deletions.
diff --git a/man/io_uring_enter.2 b/man/io_uring_enter.2
@@ -128,6 +128,19 @@ until which the waiting should end.
 
 Available since 6.12
 
+.TP
+.B IORING_ENTER_EXT_ARG_REG
+
+When this flag is set,
+.IR arg
+is not a pointer to a
+.IR struct io_uring_getevents_arg ,
+but merely an offset into an area of wait regions previously registered with
+.BR io_uring_register (2)
+using the
+.B IORING_REGISTER_CQWAIT_REG
+operation. Available since 6.12
+
 .PP
 .PP
 If the io_uring instance was configured for polling, by specifying