From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
Andrey Ryabinin <aryabinin@virtuozzo.com>
Subject: [PATCH 2/2] fs/fuse, splice_write: reduce allocation size.
Date: Mon, 16 Jul 2018 19:03:44 +0300 [thread overview]
Message-ID: <20180716160344.7015-2-aryabinin@virtuozzo.com> (raw)
In-Reply-To: <20180716160344.7015-1-aryabinin@virtuozzo.com>
The 'bufs' array contains 'pipe->buffers' elements, but the
fuse_dev_splice_write() uses only 'pipe->nrbufs' elements.
So reduce the allocation size to 'pipe->nrbufs' elements.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
---
fs/fuse/dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 74900571546d..39789f070cde 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1944,7 +1944,7 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
if (!fud)
return -EPERM;
- bufs = kvmalloc_array(pipe->buffers, sizeof(struct pipe_buffer),
+ bufs = kvmalloc_array(pipe->nrbufs, sizeof(struct pipe_buffer),
GFP_KERNEL);
if (!bufs)
return -ENOMEM;
--
2.16.4
next prev parent reply other threads:[~2018-07-16 16:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-16 16:03 [PATCH 1/2] fs/fuse, splice: use kvmalloc to allocate array of pipe_buffer structs Andrey Ryabinin
2018-07-16 16:03 ` Andrey Ryabinin [this message]
2018-07-17 14:47 ` [PATCH 2/2] fs/fuse, splice_write: reduce allocation size Miklos Szeredi
2018-07-17 15:45 ` Andrey Ryabinin
2018-07-17 16:00 ` [PATCH v2 1/3] fs/fuse, splice_write: Don't access pipe->buffers without pipe_lock() Andrey Ryabinin
2018-07-17 16:00 ` [PATCH v2 2/3] fs/fuse, splice: use kvmalloc to allocate array of pipe_buffer structs Andrey Ryabinin
2018-07-17 16:00 ` [PATCH v2 3/3] fs/fuse, splice_write: reduce allocation size Andrey Ryabinin
2019-06-12 8:57 ` [PATCH v2 1/3] fs/fuse, splice_write: Don't access pipe->buffers without pipe_lock() Vlastimil Babka
2019-06-13 9:10 ` Andrey Ryabinin
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