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| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-07-25 00:17:56 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-10-29 04:15:06 -0400 |
| commit | c96e41e92b4aaf11e1f9775ecf0d1c8cbff829ed (patch) | |
| tree | 5c24ad8aa541018a51e1704dccfc370116bb932f | |
| parent | d893f1bc2a9f0f7dcb4b433452c59f9bedac0d7d (diff) | |
| download | linux-stable-c96e41e92b4aaf11e1f9775ecf0d1c8cbff829ed.tar.gz linux-stable-c96e41e92b4aaf11e1f9775ecf0d1c8cbff829ed.tar.bz2 linux-stable-c96e41e92b4aaf11e1f9775ecf0d1c8cbff829ed.zip | |
beginning of transtion: ->mount()
eventual replacement for ->get_sb() - does *not* get vfsmount,
return ERR_PTR(error) or root of subtree to be mounted.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | fs/super.c | 17 | ||||
| -rw-r--r-- | include/linux/fs.h | 2 |
2 files changed, 16 insertions, 3 deletions
diff --git a/fs/super.c b/fs/super.c index b9c9869165db..00a2c9662b55 100644 --- a/fs/super.c +++ b/fs/super.c @@ -918,6 +918,7 @@ struct vfsmount * vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void *data) { struct vfsmount *mnt; + struct dentry *root; char *secdata = NULL; int error; @@ -942,9 +943,19 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void goto out_free_secdata; } - error = type->get_sb(type, flags, name, data, mnt); - if (error < 0) - goto out_free_secdata; + if (type->mount) { + root = type->mount(type, flags, name, data); + if (IS_ERR(root)) { + error = PTR_ERR(root); + goto out_free_secdata; + } + mnt->mnt_root = root; + mnt->mnt_sb = root->d_sb; + } else { + error = type->get_sb(type, flags, name, data, mnt); + if (error < 0) + goto out_free_secdata; + } BUG_ON(!mnt->mnt_sb); WARN_ON(!mnt->mnt_sb->s_bdi); mnt->mnt_sb->s_flags |= MS_BORN; diff --git a/include/linux/fs.h b/include/linux/fs.h index 1c73b50e81ff..c6b474311690 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1772,6 +1772,8 @@ struct file_system_type { int fs_flags; int (*get_sb) (struct file_system_type *, int, const char *, void *, struct vfsmount *); + 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; |