[PATCH 2/5] fs: charge pipe buffers to memcg

From	Vladimir Davydov <vdavydov@parallels.com>
Newsgroups	linux.kernel
Subject	[PATCH 2/5] fs: charge pipe buffers to memcg
Date	2015-09-26 12:50 +0200
Message-ID	<qcVdg-5WW-7@gated-at.bofh.it> (permalink)
References	<qcVdg-5WW-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Pipe buffers can be generated unrestrictedly by an unprivileged
userspace process, so they shouldn't go unaccounted.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
---
 fs/pipe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/pipe.c b/fs/pipe.c
index 8865f7963700..6880884b70b0 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -400,7 +400,7 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from)
 			int copied;
 
 			if (!page) {
-				page = alloc_page(GFP_HIGHUSER);
+				page = alloc_kmem_pages(GFP_HIGHUSER, 0);
 				if (unlikely(!page)) {
 					ret = ret ? : -ENOMEM;
 					break;
-- 
2.1.4

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[PATCH 2/5] fs: charge pipe buffers to memcg Vladimir Davydov <vdavydov@parallels.com> - 2015-09-26 12:50 +0200
  Re: [PATCH 2/5] fs: charge pipe buffers to memcg Andrew Morton <akpm@linux-foundation.org> - 2015-09-30 01:00 +0200
    Re: [PATCH 2/5] fs: charge pipe buffers to memcg Vladimir Davydov <vdavydov@virtuozzo.com> - 2015-09-30 19:00 +0200

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