linux-kernel - [PATCH 4/4] fs - remove unused have

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Message-ID: <20160914061450.24714.99912.stgit@pluto.themaw.net>
Date:   Wed, 14 Sep 2016 14:14:50 +0800
From:   Ian Kent <raven@...maw.net>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     autofs mailing list <autofs@...r.kernel.org>,
        Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Al Viro <viro@...IV.linux.org.uk>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Omar Sandoval <osandov@...ndov.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>
Subject: [PATCH 4/4] fs - remove unused have_submounts() function

Having added the have_local_submounts() function there are no
remaining users of have_submounts() so remove it.

Signed-off-by: Ian Kent <raven@...maw.net>
Cc: Al Viro <viro@...IV.linux.org.uk>
Cc: Eric W. Biederman <ebiederm@...ssion.com>
Cc: Omar Sandoval <osandov@...ndov.com>
---
 fs/dcache.c            |   33 ---------------------------------
 include/linux/dcache.h |    1 -
 2 files changed, 34 deletions(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index 218166b..ad36f23 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1279,39 +1279,6 @@ rename_retry:
  * 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);
-
-/*
- * 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_local_mount(void *data, struct dentry *dentry)
 {
 	int *ret = data;
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 796b358..7220683 100644
--- 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 have_local_submounts(struct dentry *);
 
 /*