[PATCH] gfp flags annotations - part 1

 - added typedef unsigned int __nocast gfp_t;

 - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
   the same warnings as far as sparse is concerned, doesn't change
   generated code (from gcc point of view we replaced unsigned int with
   typedef) and documents what's going on far better.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/page_io.c b/mm/page_io.c
index 2e605a1..330e00d 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -19,7 +19,7 @@
 #include <linux/writeback.h>
 #include <asm/pgtable.h>
 
-static struct bio *get_swap_bio(unsigned int __nocast gfp_flags, pgoff_t index,
+static struct bio *get_swap_bio(gfp_t gfp_flags, pgoff_t index,
 				struct page *page, bio_end_io_t end_io)
 {
 	struct bio *bio;