vfs: remove unused have_submounts() function

Now that path_has_submounts() has been added have_submounts() is no
longer used so remove it.

Link: http://lkml.kernel.org/r/20161011053428.27645.12310.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/dcache.c b/fs/dcache.c
index 8515875854b6dd91907e39e5c8b7b4773b6876b1..252378359a8f64eb69323dd88efa4747f20b488f 100644 (file)
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1273,39 +1273,6 @@ rename_retry:
        goto again;
 }
 
-/*
- * Search for at least 1 mount point in the dentry's subdirs.
- * We descend to the next level whenever the d_subdirs
- * list is non-empty and continue searching.
- */
-
-static enum d_walk_ret check_mount(void *data, struct dentry *dentry)
-{
-       int *ret = data;
-       if (d_mountpoint(dentry)) {
-               *ret = 1;
-               return D_WALK_QUIT;
-       }
-       return D_WALK_CONTINUE;
-}
-
-/**
- * have_submounts - check for mounts over a dentry
- * @parent: dentry to check.
- *
- * Return true if the parent or its subdirectories contain
- * a mount point
- */
-int have_submounts(struct dentry *parent)
-{
-       int ret = 0;
-
-       d_walk(parent, &ret, check_mount, NULL);
-
-       return ret;
-}
-EXPORT_SYMBOL(have_submounts);
-
 struct check_mount {
        struct vfsmount *mnt;
        unsigned int mounted;

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 0ffaf7aef9aece9a99a01973ca219e521d0a7289..c965e44694997ea0ea18ca17fd1a7eb1596b3a53 100644 (file)
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -254,7 +254,6 @@ extern struct dentry *d_find_alias(struct inode *);
 extern void d_prune_aliases(struct inode *);
 
 /* test whether we have any submounts in a subdir tree */
-extern int have_submounts(struct dentry *);
 extern int path_has_submounts(const struct path *);
 
 /*