[PATCH 11/13] Make __d_path() to take a struct path argument

[Bharata B Rao <bharata@linux.vnet.ibm.com>]

From: Andreas Gruenbacher <agruen@suse.de>

One less argument to __d_path.

All callers to __d_path pass the dentry and vfsmount of a struct
path to __d_path. Pass the struct path directly, instead.

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Acked-by: Christoph Hellwig <hch@lst.de>
---
 fs/dcache.c |   10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1779,8 +1779,7 @@ shouldnt_be_hashed:
  * "buflen" should be positive. Caller holds the dcache_lock.
  */
 static char * __d_path( struct dentry *dentry, struct vfsmount *vfsmnt,
-			struct dentry *root, struct vfsmount *rootmnt,
-			char *buffer, int buflen)
+			struct path *root, char *buffer, int buflen)
 {
 	char * end = buffer+buflen;
 	char * retval;
@@ -1805,7 +1804,7 @@ static char * __d_path( struct dentry *d
 	for (;;) {
 		struct dentry * parent;
 
-		if (dentry == root && vfsmnt == rootmnt)
+		if (dentry == root->dentry && vfsmnt == root->mnt)
 			break;
 		if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
 			/* Global root? */
@@ -1868,7 +1867,7 @@ char * d_path(struct dentry *dentry, str
 	path_get(&current->fs->root);
 	read_unlock(&current->fs->lock);
 	spin_lock(&dcache_lock);
-	res = __d_path(dentry, vfsmnt, root.dentry, root.mnt, buf, buflen);
+	res = __d_path(dentry, vfsmnt, &root, buf, buflen);
 	spin_unlock(&dcache_lock);
 	path_put(&root);
 	return res;
@@ -1936,8 +1935,7 @@ asmlinkage long sys_getcwd(char __user *
 		unsigned long len;
 		char * cwd;
 
-		cwd = __d_path(pwd.dentry, pwd.mnt, root.dentry, root.mnt,
-			       page, PAGE_SIZE);
+		cwd = __d_path(pwd.dentry, pwd.mnt, &root, page, PAGE_SIZE);
 		spin_unlock(&dcache_lock);
 
 		error = PTR_ERR(cwd);