summaryrefslogtreecommitdiffstats
path: root/Documentation/filesystems/vfs.rst
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/filesystems/vfs.rst')
-rw-r--r--Documentation/filesystems/vfs.rst16
1 files changed, 7 insertions, 9 deletions
diff --git a/Documentation/filesystems/vfs.rst b/Documentation/filesystems/vfs.rst
index eebcc0f9e2..6e903a903f 100644
--- a/Documentation/filesystems/vfs.rst
+++ b/Documentation/filesystems/vfs.rst
@@ -1264,7 +1264,7 @@ defined:
char *(*d_dname)(struct dentry *, char *, int);
struct vfsmount *(*d_automount)(struct path *);
int (*d_manage)(const struct path *, bool);
- struct dentry *(*d_real)(struct dentry *, const struct inode *);
+ struct dentry *(*d_real)(struct dentry *, enum d_real_type type);
};
``d_revalidate``
@@ -1419,16 +1419,14 @@ defined:
the dentry being transited from.
``d_real``
- overlay/union type filesystems implement this method to return
- one of the underlying dentries hidden by the overlay. It is
- used in two different modes:
+ overlay/union type filesystems implement this method to return one
+ of the underlying dentries of a regular file hidden by the overlay.
- Called from file_dentry() it returns the real dentry matching
- the inode argument. The real dentry may be from a lower layer
- already copied up, but still referenced from the file. This
- mode is selected with a non-NULL inode argument.
+ The 'type' argument takes the values D_REAL_DATA or D_REAL_METADATA
+ for returning the real underlying dentry that refers to the inode
+ hosting the file's data or metadata respectively.
- With NULL inode the topmost real underlying dentry is returned.
+ For non-regular files, the 'dentry' argument is returned.
Each dentry has a pointer to its parent dentry, as well as a hash list
of child dentries. Child dentries are basically like files in a