VFS: Unexport do_kern_mount() and clean up simple_pin_fs()

Replace all module uses with the new vfs_kern_mount() interface, and fix up
simple_pin_fs().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

14 files changed, 17 insertions, 16 deletions

diff --git a/Documentation/filesystems/automount-support.txt b/Documentation/filesystems/automount-support.txt
index 58c65a1..7cac200 100644
--- a/Documentation/filesystems/automount-support.txt
+++ b/Documentation/filesystems/automount-support.txt
@@ -19,7 +19,7 @@ following procedure:
 
  (2) Have the follow_link() op do the following steps:
 
-     (a) Call do_kern_mount() to call the appropriate filesystem to set up a
+     (a) Call vfs_kern_mount() to call the appropriate filesystem to set up a
          superblock and gain a vfsmount structure representing it.
 
      (b) Copy the nameidata provided as an argument and substitute the dentry
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c
index 3cf945c..695b90a 100644
--- a/drivers/usb/core/inode.c
+++ b/drivers/usb/core/inode.c
@@ -569,7 +569,7 @@ static int create_special_files (void)
 	ignore_mount = 1;
 
 	/* create the devices special file */
-	retval = simple_pin_fs("usbfs", &usbfs_mount, &usbfs_mount_count);
+	retval = simple_pin_fs(&usb_fs_type, &usbfs_mount, &usbfs_mount_count);
 	if (retval) {
 		err ("Unable to get usbfs mount");
 		goto exit;
diff --git a/fs/afs/mntpt.c b/fs/afs/mntpt.c
index 4e6eeb5..7b6dc03 100644
--- a/fs/afs/mntpt.c
+++ b/fs/afs/mntpt.c
@@ -210,7 +210,7 @@ static struct vfsmount *afs_mntpt_do_automount(struct dentry *mntpt)
 
 	/* try and do the mount */
 	kdebug("--- attempting mount %s -o %s ---", devname, options);
-	mnt = do_kern_mount("afs", 0, devname, options);
+	mnt = vfs_kern_mount(&afs_fs_type, 0, devname, options);
 	kdebug("--- mount result %p ---", mnt);
 
 	free_page((unsigned long) devname);
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 53c56e7..93a7821 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -48,7 +48,7 @@ static void afs_put_super(struct super_block *sb);
 
 static void afs_destroy_inode(struct inode *inode);
 
-static struct file_system_type afs_fs_type = {
+struct file_system_type afs_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "afs",
 	.get_sb		= afs_get_sb,
diff --git a/fs/afs/super.h b/fs/afs/super.h
index ac11362..32de8cc 100644
--- a/fs/afs/super.h
+++ b/fs/afs/super.h
@@ -38,6 +38,8 @@ static inline struct afs_super_info *AFS_FS_S(struct super_block *sb)
 	return sb->s_fs_info;
 }
 
+extern struct file_system_type afs_fs_type;
+
 #endif /* __KERNEL__ */
 
 #endif /* _LINUX_AFS_SUPER_H */
diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c
index d73d755..c0a909e 100644
--- a/fs/binfmt_misc.c
+++ b/fs/binfmt_misc.c
@@ -55,6 +55,7 @@ typedef struct {
 } Node;
 
 static DEFINE_RWLOCK(entries_lock);
+static struct file_system_type bm_fs_type;
 static struct vfsmount *bm_mnt;
 static int entry_count;
 
@@ -638,7 +639,7 @@ static ssize_t bm_register_write(struct file *file, const char __user *buffer,
 	if (!inode)
 		goto out2;
 
-	err = simple_pin_fs("binfmt_misc", &bm_mnt, &entry_count);
+	err = simple_pin_fs(&bm_fs_type, &bm_mnt, &entry_count);
 	if (err) {
 		iput(inode);
 		inode = NULL;
diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c
index f920d30..be5d86a 100644
--- a/fs/configfs/mount.c
+++ b/fs/configfs/mount.c
@@ -118,7 +118,7 @@ static struct file_system_type configfs_fs_type = {
 
 int configfs_pin_fs(void)
 {
-	return simple_pin_fs("configfs", &configfs_mount,
+	return simple_pin_fs(&configfs_fs_type, &configfs_mount,
 			     &configfs_mnt_count);
 }
 
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index b55b4ea..90f9417 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -199,7 +199,7 @@ struct dentry *debugfs_create_file(const char *name, mode_t mode,
 
 	pr_debug("debugfs: creating file '%s'\n",name);
 
-	error = simple_pin_fs("debugfs", &debugfs_mount, &debugfs_mount_count);
+	error = simple_pin_fs(&debug_fs_type, &debugfs_mount, &debugfs_mount_count);
 	if (error)
 		goto exit;
 
diff --git a/fs/libfs.c b/fs/libfs.c
index 7145ba7..4a3ec9a 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -424,13 +424,13 @@ out:
 
 static DEFINE_SPINLOCK(pin_fs_lock);
 
-int simple_pin_fs(char *name, struct vfsmount **mount, int *count)
+int simple_pin_fs(struct file_system_type *type, struct vfsmount **mount, int *count)
 {
 	struct vfsmount *mnt = NULL;
 	spin_lock(&pin_fs_lock);
 	if (unlikely(!*mount)) {
 		spin_unlock(&pin_fs_lock);
-		mnt = do_kern_mount(name, 0, name, NULL);
+		mnt = vfs_kern_mount(type, 0, type->name, NULL);
 		if (IS_ERR(mnt))
 			return PTR_ERR(mnt);
 		spin_lock(&pin_fs_lock);
diff --git a/fs/super.c b/fs/super.c
index 848be4f..15f2afd 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -864,11 +864,9 @@ do_kern_mount(const char *fstype, int flags, const char *name, void *data)
 	return mnt;
 }
 
-EXPORT_SYMBOL_GPL(do_kern_mount);
-
 struct vfsmount *kern_mount(struct file_system_type *type)
 {
-	return do_kern_mount(type->name, 0, type->name, NULL);
+	return vfs_kern_mount(type, 0, type->name, NULL);
 }
 
 EXPORT_SYMBOL(kern_mount);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f813bc8..eca70cf 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1763,7 +1763,7 @@ extern struct inode_operations simple_dir_inode_operations;
 struct tree_descr { char *name; const struct file_operations *ops; int mode; };
 struct dentry *d_alloc_name(struct dentry *, const char *);
 extern int simple_fill_super(struct super_block *, int, struct tree_descr *);
-extern int simple_pin_fs(char *name, struct vfsmount **mount, int *count);
+extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count);
 extern void simple_release_fs(struct vfsmount **mount, int *count);
 
 extern ssize_t simple_read_from_buffer(void __user *, size_t, loff_t *, const void *, size_t);
diff --git a/mm/shmem.c b/mm/shmem.c
index 4c5e68e..8184342 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2261,7 +2261,7 @@ static int __init init_tmpfs(void)
 #ifdef CONFIG_TMPFS
 	devfs_mk_dir("shm");
 #endif
-	shm_mnt = do_kern_mount(tmpfs_fs_type.name, MS_NOUSER,
+	shm_mnt = vfs_kern_mount(&tmpfs_fs_type, MS_NOUSER,
 				tmpfs_fs_type.name, NULL);
 	if (IS_ERR(shm_mnt)) {
 		error = PTR_ERR(shm_mnt);
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index cc673dd..a5226df 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -439,7 +439,7 @@ struct vfsmount *rpc_get_mount(void)
 {
 	int err;
 
-	err = simple_pin_fs("rpc_pipefs", &rpc_mount, &rpc_mount_count);
+	err = simple_pin_fs(&rpc_pipe_fs_type, &rpc_mount, &rpc_mount_count);
 	if (err != 0)
 		return ERR_PTR(err);
 	return rpc_mount;
diff --git a/security/inode.c b/security/inode.c
index 0f77b02..8bf4062 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -224,7 +224,7 @@ struct dentry *securityfs_create_file(const char *name, mode_t mode,
 
 	pr_debug("securityfs: creating file '%s'\n",name);
 
-	error = simple_pin_fs("securityfs", &mount, &mount_count);
+	error = simple_pin_fs(&fs_type, &mount, &mount_count);
 	if (error) {
 		dentry = ERR_PTR(error);
 		goto exit;