From: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 21 Nov 2016 00:45:28 +0000 (-0500)
Subject: namespace.c: constify struct path passed to a bunch of primitives
X-Git-Tag: v4.10-rc1~57^2~4
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=ca71cf71eeda04dc9ad18271504e499013af5415;p=linux-block.git

namespace.c: constify struct path passed to a bunch of primitives

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/internal.h b/fs/internal.h
index f4da3341b4a3..3e460159d835 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -62,7 +62,7 @@ extern int vfs_path_lookup(struct dentry *, struct vfsmount *,
 extern void *copy_mount_options(const void __user *);
 extern char *copy_mount_string(const void __user *);
 
-extern struct vfsmount *lookup_mnt(struct path *);
+extern struct vfsmount *lookup_mnt(const struct path *);
 extern int finish_automount(struct vfsmount *, struct path *);
 
 extern int sb_prepare_remount_readonly(struct super_block *);
diff --git a/fs/namespace.c b/fs/namespace.c
index 4d80a5066a1f..9ad88a45b3e3 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -678,7 +678,7 @@ out:
  *
  * lookup_mnt takes a reference to the found vfsmount.
  */
-struct vfsmount *lookup_mnt(struct path *path)
+struct vfsmount *lookup_mnt(const struct path *path)
 {
 	struct mount *child_mnt;
 	struct vfsmount *m;
@@ -1159,7 +1159,7 @@ struct vfsmount *mntget(struct vfsmount *mnt)
 }
 EXPORT_SYMBOL(mntget);
 
-struct vfsmount *mnt_clone_internal(struct path *path)
+struct vfsmount *mnt_clone_internal(const struct path *path)
 {
 	struct mount *p;
 	p = clone_mnt(real_mount(path->mnt), path->dentry, CL_PRIVATE);
@@ -1758,7 +1758,7 @@ out:
 
 /* Caller should check returned pointer for errors */
 
-struct vfsmount *collect_mounts(struct path *path)
+struct vfsmount *collect_mounts(const struct path *path)
 {
 	struct mount *tree;
 	namespace_lock();
@@ -1791,7 +1791,7 @@ void drop_collected_mounts(struct vfsmount *mnt)
  *
  * Release with mntput().
  */
-struct vfsmount *clone_private_mount(struct path *path)
+struct vfsmount *clone_private_mount(const struct path *path)
 {
 	struct mount *old_mnt = real_mount(path->mnt);
 	struct mount *new_mnt;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f96501b51c49..3056fe46f336 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2123,7 +2123,7 @@ extern int may_umount_tree(struct vfsmount *);
 extern int may_umount(struct vfsmount *);
 extern long do_mount(const char *, const char __user *,
 		     const char *, unsigned long, void *);
-extern struct vfsmount *collect_mounts(struct path *);
+extern struct vfsmount *collect_mounts(const struct path *);
 extern void drop_collected_mounts(struct vfsmount *);
 extern int iterate_mounts(int (*)(struct vfsmount *, void *), void *,
 			  struct vfsmount *);
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 1172cce949a4..cf2b5784b649 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -79,12 +79,12 @@ extern void mnt_drop_write(struct vfsmount *mnt);
 extern void mnt_drop_write_file(struct file *file);
 extern void mntput(struct vfsmount *mnt);
 extern struct vfsmount *mntget(struct vfsmount *mnt);
-extern struct vfsmount *mnt_clone_internal(struct path *path);
+extern struct vfsmount *mnt_clone_internal(const struct path *path);
 extern int __mnt_is_readonly(struct vfsmount *mnt);
 extern bool mnt_may_suid(struct vfsmount *mnt);
 
 struct path;
-extern struct vfsmount *clone_private_mount(struct path *path);
+extern struct vfsmount *clone_private_mount(const struct path *path);
 
 struct file_system_type;
 extern struct vfsmount *vfs_kern_mount(struct file_system_type *type,