Thread (115 messages) 115 messages, 9 authors, 2021-09-28
STALE1737d

[PATCH 5.10 071/103] io_uring: put provided buffer meta data under memcg accounting

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-09-27 17:15:28
Also in: lkml
Subsystem: filesystems (vfs and infrastructure), the rest · Maintainers: Alexander Viro, Christian Brauner, Linus Torvalds

From: Jens Axboe <axboe@kernel.dk>

[ 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>
---
 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 a8d07273ddc0..26753d0cb431 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4041,7 +4041,7 @@ 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;
 
-- 
2.33.0


Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help