[PATCH RESEND] f2fs: don't allow volatile writes for non-regular file

From	Chao Yu <yuchao0@huawei.com>
Newsgroups	linux.kernel
Subject	[PATCH RESEND] f2fs: don't allow volatile writes for non-regular file
Date	2017-03-17 08:50 +0100
Message-ID	<tlUO5-2W2-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Now f2fs only supports volatile writes for journal db regular file.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
---
 fs/f2fs/file.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index f64475a53ad8..f544a1648313 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -1594,6 +1594,9 @@ static int f2fs_ioc_start_volatile_write(struct file *filp)
 	if (!inode_owner_or_capable(inode))
 		return -EACCES;
 
+	if (!S_ISREG(inode->i_mode))
+		return -EINVAL;
+
 	ret = mnt_want_write_file(filp);
 	if (ret)
 		return ret;
-- 
2.8.2.295.g3f1c1d0

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[PATCH RESEND] f2fs: don't allow volatile writes for non-regular file Chao Yu <yuchao0@huawei.com> - 2017-03-17 08:50 +0100

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