[PATCH 2/3] mm/page_owner: rename PAGE_EXT_OWNER flag

[Sergey Senozhatsky]

A cosmetic change:

PAGE_OWNER_TRACK_FREE will introduce one more page_owner
flag: PAGE_EXT_OWNER_FREE. To make names symmetrical, rename
PAGE_EXT_OWNER to PAGE_EXT_OWNER_ALLOC.

Signed-off-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
---
 include/linux/page_ext.h |  2 +-
 mm/page_owner.c          | 12 ++++++------
 mm/vmstat.c              |  2 +-
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/linux/page_ext.h b/include/linux/page_ext.h
index 03f2a3e..66ba2bb 100644
--- a/include/linux/page_ext.h
+++ b/include/linux/page_ext.h
@@ -26,7 +26,7 @@ struct page_ext_operations {
 enum page_ext_flags {
        PAGE_EXT_DEBUG_POISON,          /* Page is poisoned */
        PAGE_EXT_DEBUG_GUARD,
-       PAGE_EXT_OWNER,
+       PAGE_EXT_OWNER_ALLOC,
 #if defined(CONFIG_IDLE_PAGE_TRACKING) && !defined(CONFIG_64BIT)
        PAGE_EXT_YOUNG,
        PAGE_EXT_IDLE,
diff --git a/mm/page_owner.c b/mm/page_owner.c
index fde443a..4acccb7 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -94,7 +94,7 @@ void __page_owner_free_pages(struct page *page, unsigned int 
order)
                page_ext = lookup_page_ext(page + i);
                if (unlikely(!page_ext))
                        continue;
-               __clear_bit(PAGE_EXT_OWNER, &page_ext->flags);
+               __clear_bit(PAGE_EXT_OWNER_ALLOC, &page_ext->flags);
        }
 }
 
@@ -160,7 +160,7 @@ noinline void __page_owner_alloc_pages(struct page *page, 
unsigned int order,
        page_ext->gfp_mask = gfp_mask;
        page_ext->last_migrate_reason = -1;
 
-       __set_bit(PAGE_EXT_OWNER, &page_ext->flags);
+       __set_bit(PAGE_EXT_OWNER_ALLOC, &page_ext->flags);
 }
 
 void __set_page_owner_migrate_reason(struct page *page, int reason)
@@ -207,7 +207,7 @@ void __copy_page_owner(struct page *oldpage, struct page 
*newpage)
         * in that case we also don't need to explicitly clear the info from
         * the new page, which will be freed.
         */
-       __set_bit(PAGE_EXT_OWNER, &new_ext->flags);
+       __set_bit(PAGE_EXT_OWNER_ALLOC, &new_ext->flags);
 }
 
 static ssize_t
@@ -301,7 +301,7 @@ void __dump_page_owner(struct page *page)
        gfp_mask = page_ext->gfp_mask;
        mt = gfpflags_to_migratetype(gfp_mask);
 
-       if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags)) {
+       if (!test_bit(PAGE_EXT_OWNER_ALLOC, &page_ext->flags)) {
                pr_alert("page_owner info is not active (free page?)\n");
                return;
        }
@@ -374,7 +374,7 @@ read_page_owner(struct file *file, char __user *buf, size_t 
count, loff_t *ppos)
                 * Some pages could be missed by concurrent allocation or free,
                 * because we don't hold the zone lock.
                 */
-               if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags))
+               if (!test_bit(PAGE_EXT_OWNER_ALLOC, &page_ext->flags))
                        continue;
 
                /*
@@ -448,7 +448,7 @@ static void init_pages_in_zone(pg_data_t *pgdat, struct 
zone *zone)
                                continue;
 
                        /* Maybe overraping zone */
-                       if (test_bit(PAGE_EXT_OWNER, &page_ext->flags))
+                       if (test_bit(PAGE_EXT_OWNER_ALLOC, &page_ext->flags))
                                continue;
 
                        /* Found early allocated page */
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 7997f529..63ef65f 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1070,7 +1070,7 @@ static void pagetypeinfo_showmixedcount_print(struct 
seq_file *m,
                        if (unlikely(!page_ext))
                                continue;
 
-                       if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags))
+                       if (!test_bit(PAGE_EXT_OWNER_ALLOC, &page_ext->flags))
                                continue;
 
                        page_mt = gfpflags_to_migratetype(page_ext->gfp_mask);
-- 
2.9.0.37.g6d523a3