Currently, a lot of filesystem mounting functions feature in
file_system_type only to be called from vfs mount_fs and call mount_bdev.
This patch adds fill_super function to that structure and lets vfs
call mount_bdev when no mount function is declared.
Signed-off-by: Fabian Frederick <f...@skynet.be>
---
fs/super.c | 6 +++++-
include/linux/fs.h | 2 ++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/fs/super.c b/fs/super.c
index a89d625..7c37355 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -1112,7 +1112,11 @@ mount_fs(struct file_system_type *type, int flags, const
char *name, void *data)
goto out_free_secdata;
}
- root = type->mount(type, flags, name, data);
+ if (type->mount)
+ root = type->mount(type, flags, name, data);
+ else
+ root = mount_bdev(type, flags, name, data, type->fill_super);
+
if (IS_ERR(root)) {
error = PTR_ERR(root);
goto out_free_secdata;
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 0bd9669..3e19349 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1846,8 +1846,10 @@ struct file_system_type {
#define FS_USERNS_MOUNT 8 /* Can be mounted by userns
root */
#define FS_USERNS_DEV_MOUNT 16 /* A userns mount does not imply MNT_NODEV */
#define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during
rename() internally. */
+ int (*fill_super)(struct super_block *, void *, int);
struct dentry *(*mount) (struct file_system_type *, int,
const char *, void *);
+
void (*kill_sb) (struct super_block *);
struct module *owner;
struct file_system_type * next;
--
1.9.3
--
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