[PATCH] Remove d_path from sched.h

This patch from William Lee Irwin III privatizes __d_path() to dcache.c,
uninlines d_path(), moves its declaration to dcache.h, moves it to
dcache.c, and exports d_path() instead of __d_path().

fs/dcache.c

@@ -1085,9 +1085,9 @@ void d_move(struct dentry * dentry, struct dentry * target)
  *
  * "buflen" should be %PAGE_SIZE or more. Caller holds the dcache_lock.
  */
-char * __d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
-		struct dentry *root, struct vfsmount *rootmnt,
-		char *buffer, int buflen)
+static char * __d_path( struct dentry *dentry, struct vfsmount *vfsmnt,
+			struct dentry *root, struct vfsmount *rootmnt,
+			char *buffer, int buflen)
 {
 	char * end = buffer+buflen;
 	char * retval;
@@ -1140,6 +1140,25 @@ char * __d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
 	return retval;
 }
 
+/* write full pathname into buffer and return start of pathname */
+char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
+				char *buf, int buflen)
+{
+	char *res;
+	struct vfsmount *rootmnt;
+	struct dentry *root;
+	read_lock(&current->fs->lock);
+	rootmnt = mntget(current->fs->rootmnt);
+	root = dget(current->fs->root);
+	read_unlock(&current->fs->lock);
+	spin_lock(&dcache_lock);
+	res = __d_path(dentry, vfsmnt, root, rootmnt, buf, buflen);
+	spin_unlock(&dcache_lock);
+	dput(root);
+	mntput(rootmnt);
+	return res;
+}
+
 /*
  * NOTE! The user-level library version returns a
  * character pointer. The kernel system call just

include/linux/dcache.h

@@ -228,8 +228,7 @@ extern struct dentry * __d_lookup(struct dentry *, struct qstr *);
 /* validate "insecure" dentry pointer */
 extern int d_validate(struct dentry *, struct dentry *);
 
-extern char * __d_path(struct dentry *, struct vfsmount *, struct dentry *,
-	struct vfsmount *, char *, int);
+extern char * d_path(struct dentry *, struct vfsmount *, char *, int);
   
 /* Allocation counts.. */
 

include/linux/sched.h

@@ -848,26 +848,6 @@ static inline void task_unlock(struct task_struct *p)
 {
 	spin_unlock(&p->alloc_lock);
 }
-
-/* write full pathname into buffer and return start of pathname */
-static inline char * d_path(struct dentry *dentry, struct vfsmount *vfsmnt,
-				char *buf, int buflen)
-{
-	char *res;
-	struct vfsmount *rootmnt;
-	struct dentry *root;
-	read_lock(&current->fs->lock);
-	rootmnt = mntget(current->fs->rootmnt);
-	root = dget(current->fs->root);
-	read_unlock(&current->fs->lock);
-	spin_lock(&dcache_lock);
-	res = __d_path(dentry, vfsmnt, root, rootmnt, buf, buflen);
-	spin_unlock(&dcache_lock);
-	dput(root);
-	mntput(rootmnt);
-	return res;
-}
-
  
 /**
  * get_task_mm - acquire a reference to the task's mm

kernel/ksyms.c

@@ -166,7 +166,7 @@ EXPORT_SYMBOL(d_alloc);
 EXPORT_SYMBOL(d_alloc_anon);
 EXPORT_SYMBOL(d_splice_alias);
 EXPORT_SYMBOL(d_lookup);
-EXPORT_SYMBOL(__d_path);
+EXPORT_SYMBOL(d_path);
 EXPORT_SYMBOL(mark_buffer_dirty);
 EXPORT_SYMBOL(end_buffer_io_sync);
 EXPORT_SYMBOL(__mark_inode_dirty);