linux-kernel - [RFC PATCH v4 03/12] vfs - move mnt_namespace definition to linux/mount.h

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Message-ID: <20150317024509.24592.88118.stgit@pluto.fritz.box>
Date:	Tue, 17 Mar 2015 10:45:09 +0800
From:	Ian Kent <raven@...maw.net>
To:	Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	David Howells <dhowells@...hat.com>,
	Oleg Nesterov <onestero@...hat.com>,
	Trond Myklebust <trond.myklebust@...marydata.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Benjamin Coddington <bcodding@...hat.com>,
	Al Viro <viro@...IV.linux.org.uk>,
	Jeff Layton <jeff.layton@...marydata.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [RFC PATCH v4 03/12] vfs - move mnt_namespace definition to
 linux/mount.h

From: Ian Kent <ikent@...hat.com>

The mnt_namespace definition will be needed by the usermode helper
contained execution implementation, move it to include/linux/mount.h.

Signed-off-by: Ian Kent <ikent@...hat.com>
Cc: Benjamin Coddington <bcodding@...hat.com>
Cc: Al Viro <viro@...IV.linux.org.uk>
Cc: J. Bruce Fields <bfields@...ldses.org>
Cc: David Howells <dhowells@...hat.com>
Cc: Trond Myklebust <trond.myklebust@...marydata.com>
Cc: Oleg Nesterov <onestero@...hat.com>
Cc: Eric W. Biederman <ebiederm@...ssion.com>
Cc: Jeff Layton <jeff.layton@...marydata.com>
---
 fs/mount.h            |   12 ------------
 include/linux/mount.h |   14 +++++++++++++-
 2 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/fs/mount.h b/fs/mount.h
index 6a61c2b..5b8423b 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -1,20 +1,8 @@
 #include <linux/mount.h>
 #include <linux/seq_file.h>
 #include <linux/poll.h>
-#include <linux/ns_common.h>
 #include <linux/fs_pin.h>
 
-struct mnt_namespace {
-	atomic_t		count;
-	struct ns_common	ns;
-	struct mount *	root;
-	struct list_head	list;
-	struct user_namespace	*user_ns;
-	u64			seq;	/* Sequence number to prevent loops */
-	wait_queue_head_t poll;
-	u64 event;
-};
-
 struct mnt_pcp {
 	int mnt_count;
 	int mnt_writers;
diff --git a/include/linux/mount.h b/include/linux/mount.h
index c2c561d..39dbcdf 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -15,11 +15,12 @@
 #include <linux/spinlock.h>
 #include <linux/seqlock.h>
 #include <linux/atomic.h>
+#include <linux/ns_common.h>
+#include <linux/wait.h>
 
 struct super_block;
 struct vfsmount;
 struct dentry;
-struct mnt_namespace;
 
 #define MNT_NOSUID	0x01
 #define MNT_NODEV	0x02
@@ -62,6 +63,17 @@ struct mnt_namespace;
 #define MNT_SYNC_UMOUNT		0x2000000
 #define MNT_MARKED		0x4000000
 
+struct mnt_namespace {
+	atomic_t		count;
+	struct ns_common	ns;
+	struct mount *	root;
+	struct list_head	list;
+	struct user_namespace	*user_ns;
+	u64			seq;	/* Sequence number to prevent loops */
+	wait_queue_head_t poll;
+	u64 event;
+};
+
 struct vfsmount {
 	struct dentry *mnt_root;	/* root of the mounted tree */
 	struct super_block *mnt_sb;	/* pointer to superblock */

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