Commit 9990da93 authored Sep 24, 2021 by Jens Axboe

io_uring: put provided buffer meta data under memcg accounting



For each provided buffer, we allocate a struct io_buffer to hold the
data associated with it. As a large number of buffers can be provided,
account that data with memcg.

Fixes: ddf0322d ("io_uring: add IORING_OP_PROVIDE_BUFFERS")
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent 8bab4c09

fs/io_uring.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -4387,7 +4387,7 @@ static int io_add_buffers(struct io_provide_buf pbuf, struct io_buffer *head)
		int i, bid = pbuf->bid;

		for (i = 0; i < pbuf->nbufs; i++) {
		buf = kmalloc(sizeof(*buf), GFP_KERNEL);
		buf = kmalloc(sizeof(*buf), GFP_KERNEL_ACCOUNT);
		if (!buf)
		break;