[PATCH 1/1] fallocate: create FAN_MODIFY and IN_MODIFY events

From: Heinrich Schuchardt <xypron.glpk@gmx.de>
To: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Jan Kara <jack@suse.cz>, Eric Paris <eparis@parisplace.org>,
	John McCutchan <john@johnmccutchan.com>,
	Robert Love <rlove@rlove.org>,
	Michael Kerrisk <mtk.manpages@gmail.com>,
	Heinrich Schuchardt <xypron.glpk@gmx.de>
Subject: [PATCH 1/1] fallocate: create FAN_MODIFY and IN_MODIFY events
Date: Fri,  3 Oct 2014 10:19:30 +0200	[thread overview]
Message-ID: <1412324370-959-1-git-send-email-xypron.glpk@gmx.de> (raw)
In-Reply-To: <1412287587-5392-1-git-send-email-xypron.glpk@gmx.de>

The fanotify and the inotify API can used to monitor changes of the file
system.

System call fallocate modifies files. Hence it should trigger the corresponding
fanotify (FAN_MODIFY) and inotify (IN_MODIFY) events.

This patch adds the missing call to fsnotify_modify.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 fs/open.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/fs/open.c b/fs/open.c
index d6fd3ac..03aa8e5 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -295,6 +295,11 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
 
 	sb_start_write(inode->i_sb);
 	ret = file->f_op->fallocate(file, mode, offset, len);
+
+	/* Create inotify and fanotify events. */
+	if (ret == 0)
+		fsnotify_modify(file);
+
 	sb_end_write(inode->i_sb);
 	return ret;
 }
-- 
2.1.0

