[PATCH] fix address_space.i_mmap comment

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/linux/fs.h

@@ -336,7 +336,7 @@ struct address_space {
 	struct radix_tree_root	page_tree;	/* radix tree of all pages */
 	spinlock_t		tree_lock;	/* and spinlock protecting it */
 	unsigned int		i_mmap_writable;/* count VM_SHARED mappings */
-	struct prio_tree_root	i_mmap;		/* tree of private mappings */
+	struct prio_tree_root	i_mmap;		/* tree of private and shared mappings */
 	struct list_head	i_mmap_nonlinear;/*list VM_NONLINEAR mappings */
 	spinlock_t		i_mmap_lock;	/* protect tree, count, list */
 	atomic_t		truncate_count;	/* Cover race condition with truncate */