From 05ac8e4c8aec533a276d92d4246b8bad19529831 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@kernel.dk>
Date: Fri, 24 Sep 2021 07:39:08 -0600
Subject: [PATCH] io_uring: put provided buffer meta data under memcg accounting
Git-commit: 9990da93d2bf9892c2c14c958bef050d4e461a1a
Patch-mainline: v5.15-rc3
References: stable-5.14.9
[ Upstream commit 9990da93d2bf9892c2c14c958bef050d4e461a1a ]
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: ddf0322db79c ("io_uring: add IORING_OP_PROVIDE_BUFFERS")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 739e58ccc982..187eb1907bde 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4043,7 +4043,7 @@ 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;
--
2.26.2