drm/i915: Perform execbuffer object locking as a separate step

[linux-2.6-microblaze.git] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index ef5f336..2f11829 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -96,26 +96,6 @@ static inline void set_page_refcounted(struct page *page)
        set_page_count(page, 1);
 }
 
-/*
- * When kernel touch the user page, the user page may be have been marked
- * poison but still mapped in user space, if without this page, the kernel
- * can guarantee the data integrity and operation success, the kernel is
- * better to check the posion status and avoid touching it, be good not to
- * panic, coredump for process fatal signal is a sample case matching this
- * scenario. Or if kernel can't guarantee the data integrity, it's better
- * not to call this function, let kernel touch the poison page and get to
- * panic.
- */
-static inline bool is_page_poisoned(struct page *page)
-{
-       if (PageHWPoison(page))
-               return true;
-       else if (PageHuge(page) && PageHWPoison(compound_head(page)))
-               return true;
-
-       return false;
-}
-
 extern unsigned long highest_memmap_pfn;
 
 /*
@@ -244,7 +224,13 @@ struct compact_control {
        unsigned int nr_freepages;      /* Number of isolated free pages */
        unsigned int nr_migratepages;   /* Number of pages to migrate */
        unsigned long free_pfn;         /* isolate_freepages search base */
-       unsigned long migrate_pfn;      /* isolate_migratepages search base */
+       /*
+        * Acts as an in/out parameter to page isolation for migration.
+        * isolate_migratepages uses it as a search base.
+        * isolate_migratepages_block will update the value to the next pfn
+        * after the last isolated one.
+        */
+       unsigned long migrate_pfn;
        unsigned long fast_start_pfn;   /* a pfn to start linear scan from */
        struct zone *zone;
        unsigned long total_migrate_scanned;
@@ -280,7 +266,7 @@ struct capture_control {
 unsigned long
 isolate_freepages_range(struct compact_control *cc,
                        unsigned long start_pfn, unsigned long end_pfn);
-unsigned long
+int
 isolate_migratepages_range(struct compact_control *cc,
                           unsigned long low_pfn, unsigned long end_pfn);
 int find_suitable_fallback(struct free_area *area, unsigned int order,
@@ -328,7 +314,7 @@ static inline bool is_exec_mapping(vm_flags_t flags)
 }
 
 /*
- * Stack area - atomatically grows in one direction
+ * Stack area - automatically grows in one direction
  *
  * VM_GROWSUP / VM_GROWSDOWN VMAs are always private anonymous:
  * do_mmap() forbids all other combinations.