d_path: Make d_path() use a struct path

d_path() is used on a <dentry,vfsmount> pair.  Lets use a struct path to
reflect this.

[akpm@linux-foundation.org: fix build in mm/memory.c]
Signed-off-by: Jan Blunck <jblunck@suse.de>
Acked-by: Bryan Wu <bryan.wu@analog.com>
Acked-by: Christoph Hellwig <hch@infradead.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/blackfin/kernel/traps.c b/arch/blackfin/kernel/traps.c
index 58717cb..56a67ab 100644
--- a/arch/blackfin/kernel/traps.c
+++ b/arch/blackfin/kernel/traps.c
@@ -126,15 +126,13 @@
 			struct vm_area_struct *vma = vml->vma;
 
 			if (address >= vma->vm_start && address < vma->vm_end) {
+				char _tmpbuf[256];
 				char *name = p->comm;
 				struct file *file = vma->vm_file;
-				if (file) {
-					char _tmpbuf[256];
-					name = d_path(file->f_dentry,
-					              file->f_vfsmnt,
-					              _tmpbuf,
-					              sizeof(_tmpbuf));
-				}
+
+				if (file)
+					name = d_path(&file->f_path, _tmpbuf,
+						      sizeof(_tmpbuf));
 
 				/* FLAT does not have its text aligned to the start of
 				 * the map while FDPIC ELF does ...