ALSA: hda - Fix wrong gpio_dir & gpio_mask hint setups for IDT/STAC codecs

[pandora-kernel.git] / include / linux / mm_types.h

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 3e01a19..de3a321 100644 (file)
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -62,10 +62,23 @@ struct page {
                        struct {
 
                                union {
-                                       atomic_t _mapcount;     /* Count of ptes mapped in mms,
-                                                        * to show when page is mapped
-                                                        * & limit reverse map searches.
-                                                        */
+                                       /*
+                                        * Count of ptes mapped in
+                                        * mms, to show when page is
+                                        * mapped & limit reverse map
+                                        * searches.
+                                        *
+                                        * Used also for tail pages
+                                        * refcounting instead of
+                                        * _count. Tail pages cannot
+                                        * be mapped and keeping the
+                                        * tail page _count zero at
+                                        * all times guarantees
+                                        * get_page_unless_zero() will
+                                        * never succeed on tail
+                                        * pages.
+                                        */
+                                       atomic_t _mapcount;
 
                                        struct {
                                                unsigned inuse:16;
@@ -284,6 +297,7 @@ struct mm_struct {
        void (*unmap_area) (struct mm_struct *mm, unsigned long addr);
 #endif
        unsigned long mmap_base;                /* base of mmap area */
+       unsigned long mmap_legacy_base;         /* base of mmap area in bottom-up allocations */
        unsigned long task_size;                /* size of task vm space */
        unsigned long cached_hole_size;         /* if non-zero, the largest hole below free_area_cache */
        unsigned long free_area_cache;          /* first hole of size cached_hole_size or larger */