| From | Valerie Aurora <> | Subject | [PATCH 11/34] union-mount: Add union_find_dir() | Date | Thu, 16 Sep 2010 15:12:02 -0700 |
| |
union_find_dir() returns the path of the directory at the specified layer in a unioned directory.
Signed-off-by: Valerie Aurora <vaurora@redhat.com> --- fs/union.h | 10 ++++++++++ 1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/fs/union.h b/fs/union.h index 38b26fd..e242451 100644 --- a/fs/union.h +++ b/fs/union.h @@ -49,6 +49,16 @@ struct union_stack { struct path u_dirs[0]; }; +static inline struct path *union_find_dir(struct dentry *dentry, + unsigned int layer) { + BUG_ON(layer >= dentry->d_sb->s_union_count); + return &(dentry->d_union_stack->u_dirs[layer]); +} + +#else /* CONFIG_UNION_MOUNT */ + +#define union_find_dir(x, y) ({ BUG(); (NULL); }) + #endif /* CONFIG_UNION_MOUNT */ #endif /* __KERNEL__ */ #endif /* __LINUX_UNION_H */ -- 1.6.3.3
|