From: Jan Kara <jack@suse.cz>
Date: Wed, 20 Feb 2013 02:13:57 +0000 (+1100)
Subject: ocfs2: add freeze protection to ocfs2_file_splice_write()
X-Git-Tag: next-20130220~1^2~598
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8722d5d2d4d1975b0eef81b0a9844a94207d37e8;p=karo-tx-linux.git

ocfs2: add freeze protection to ocfs2_file_splice_write()

ocfs2_file_splice_write() was missed when adding freeze protection to all
write paths. Fix that.

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Nikola Ciprich <nikola.ciprich@linuxbox.cz>
Cc: Marco Stornelli <marco.stornelli@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index b5fc161bce79..ddb5b03646ba 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2469,6 +2469,9 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
 			out->f_path.dentry->d_name.len,
 			out->f_path.dentry->d_name.name, len);
 
+	if (!sb_start_file_write(out))
+		return -EAGAIN;
+
 	if (pipe->inode)
 		mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_PARENT);
 
@@ -2507,6 +2510,7 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
 
 		balance_dirty_pages_ratelimited(mapping);
 	}
+	sb_end_write(inode->i_sb);
 
 	return ret;
 }