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io_uring: put provided buffer meta data under memcg accounting

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[ 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: ddf0322db7 ("io_uring: add IORING_OP_PROVIDE_BUFFERS")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jens Axboe
2021-09-24 07:39:08 -06:00
committed by Greg Kroah-Hartman
parent 7040b37a96
commit ce092350b4
1 changed files with 1 additions and 1 deletions
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fs/io_uring.c
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@@ -4041,7 +4041,7 @@ static int io_add_buffers(struct io_provide_buf *pbuf, struct io_buffer **head)
int i, bid = pbuf->bid; int i, bid = pbuf->bid;
for (i = 0; i < pbuf->nbufs; i++) { for (i = 0; i < pbuf->nbufs; i++) {
buf = kmalloc(sizeof(*buf), GFP_KERNEL); buf = kmalloc(sizeof(*buf), GFP_KERNEL_ACCOUNT);
if (!buf) if (!buf)
break; break;