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mm: rename page struct field helpers 

The function names page_xchg_last_nid(), page_last_nid() and
reset_page_last_nid() were judged to be inconsistent so rename them to a
struct_field_op style pattern.  As it looked jarring to have
reset_page_mapcount() and page_nid_reset_last() beside each other in
memmap_init_zone(), this patch also renames reset_page_mapcount() to
page_mapcount_reset().  There are others like init_page_count() but as
it is used throughout the arch code a rename would likely cause more
conflicts than it is worth.

[akpm@linux-foundation.org: fix zcache]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mel Gorman 2013-02-22 16:34:59 -08:00 committed by Linus Torvalds
parent e4715f01be
commit 22b751c3d0
10 changed files with 25 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/staging/zcache/zbud.c
View File

@ -404,7 +404,7 @@ static inline struct page *zbud_unuse_zbudpage(struct zbudpage *zbudpage,
else
zbud_pers_pageframes--;
zbudpage_spin_unlock(zbudpage);
reset_page_mapcount(page);
page_mapcount_reset(page);
init_page_count(page);
page->index = 0;
return page;

2
drivers/staging/zsmalloc/zsmalloc-main.c
View File

@ -472,7 +472,7 @@ static void reset_page(struct page *page)
set_page_private(page, 0);
page->mapping = NULL;
page->freelist = NULL;
reset_page_mapcount(page);
page_mapcount_reset(page);
}
static void free_zspage(struct page *first_page)

20
include/linux/mm.h
View File

@ -367,7 +367,7 @@ static inline struct page *compound_head(struct page *page)
* both from it and to it can be tracked, using atomic_inc_and_test
* and atomic_add_negative(-1).
*/
static inline void reset_page_mapcount(struct page *page)
static inline void page_mapcount_reset(struct page *page)
{
atomic_set(&(page)->_mapcount, -1);
}
@ -658,28 +658,28 @@ static inline int page_to_nid(const struct page *page)
#ifdef CONFIG_NUMA_BALANCING
#ifdef LAST_NID_NOT_IN_PAGE_FLAGS
static inline int page_xchg_last_nid(struct page *page, int nid)
static inline int page_nid_xchg_last(struct page *page, int nid)
{
return xchg(&page->_last_nid, nid);
}
static inline int page_last_nid(struct page *page)
static inline int page_nid_last(struct page *page)
{
return page->_last_nid;
}
static inline void reset_page_last_nid(struct page *page)
static inline void page_nid_reset_last(struct page *page)
{
page->_last_nid = -1;
}
#else
static inline int page_last_nid(struct page *page)
static inline int page_nid_last(struct page *page)
{
return (page->flags >> LAST_NID_PGSHIFT) & LAST_NID_MASK;
}
extern int page_xchg_last_nid(struct page *page, int nid);
extern int page_nid_xchg_last(struct page *page, int nid);
static inline void reset_page_last_nid(struct page *page)
static inline void page_nid_reset_last(struct page *page)
{
int nid = (1 << LAST_NID_SHIFT) - 1;
@ -688,17 +688,17 @@ static inline void reset_page_last_nid(struct page *page)
}
#endif /* LAST_NID_NOT_IN_PAGE_FLAGS */
#else
static inline int page_xchg_last_nid(struct page *page, int nid)
static inline int page_nid_xchg_last(struct page *page, int nid)
{
return page_to_nid(page);
}
static inline int page_last_nid(struct page *page)
static inline int page_nid_last(struct page *page)
{
return page_to_nid(page);
}
static inline void reset_page_last_nid(struct page *page)
static inline void page_nid_reset_last(struct page *page)
{
}
#endif

2
mm/huge_memory.c
View File

@ -1639,7 +1639,7 @@ static void __split_huge_page_refcount(struct page *page)
page_tail->mapping = page->mapping;
page_tail->index = page->index + i;
page_xchg_last_nid(page_tail, page_last_nid(page));
page_nid_xchg_last(page_tail, page_nid_last(page));
BUG_ON(!PageAnon(page_tail));
BUG_ON(!PageUptodate(page_tail));

2
mm/mempolicy.c
View File

@ -2316,7 +2316,7 @@ int mpol_misplaced(struct page *page, struct vm_area_struct *vma, unsigned long
* it less likely we act on an unlikely task<->page
* relation.
*/
last_nid = page_xchg_last_nid(page, polnid);
last_nid = page_nid_xchg_last(page, polnid);
if (last_nid != polnid)
goto out;
}

4
mm/migrate.c
View File

@ -1497,7 +1497,7 @@ static struct page *alloc_misplaced_dst_page(struct page *page,
__GFP_NOWARN) &
~GFP_IOFS, 0);
if (newpage)
page_xchg_last_nid(newpage, page_last_nid(page));
page_nid_xchg_last(newpage, page_nid_last(page));
return newpage;
}
@ -1681,7 +1681,7 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
if (!new_page)
goto out_fail;
page_xchg_last_nid(new_page, page_last_nid(page));
page_nid_xchg_last(new_page, page_nid_last(page));
isolated = numamigrate_isolate_page(pgdat, page);
if (!isolated) {

4
mm/mmzone.c
View File

@ -98,14 +98,14 @@ void lruvec_init(struct lruvec *lruvec)
}
#if defined(CONFIG_NUMA_BALANCING) && !defined(LAST_NID_NOT_IN_PAGE_FLAGS)
int page_xchg_last_nid(struct page *page, int nid)
int page_nid_xchg_last(struct page *page, int nid)
{
unsigned long old_flags, flags;
int last_nid;
do {
old_flags = flags = page->flags;
last_nid = page_last_nid(page);
last_nid = page_nid_last(page);
flags &= ~(LAST_NID_MASK << LAST_NID_PGSHIFT);
flags |= (nid & LAST_NID_MASK) << LAST_NID_PGSHIFT;

10
mm/page_alloc.c
View File

@ -295,7 +295,7 @@ static void bad_page(struct page *page)
/* Don't complain about poisoned pages */
if (PageHWPoison(page)) {
reset_page_mapcount(page); /* remove PageBuddy */
page_mapcount_reset(page); /* remove PageBuddy */
return;
}
@ -327,7 +327,7 @@ static void bad_page(struct page *page)
dump_stack();
out:
/* Leave bad fields for debug, except PageBuddy could make trouble */
reset_page_mapcount(page); /* remove PageBuddy */
page_mapcount_reset(page); /* remove PageBuddy */
add_taint(TAINT_BAD_PAGE);
}
@ -613,7 +613,7 @@ static inline int free_pages_check(struct page *page)
bad_page(page);
return 1;
}
reset_page_last_nid(page);
page_nid_reset_last(page);
if (page->flags & PAGE_FLAGS_CHECK_AT_PREP)
page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
return 0;
@ -3894,8 +3894,8 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
set_page_links(page, zone, nid, pfn);
mminit_verify_page_links(page, zone, nid, pfn);
init_page_count(page);
reset_page_mapcount(page);
reset_page_last_nid(page);
page_mapcount_reset(page);
page_nid_reset_last(page);
SetPageReserved(page);
/*
* Mark the block movable so that blocks are reserved for

2
mm/slob.c
View File

@ -360,7 +360,7 @@ static void slob_free(void *block, int size)
clear_slob_page_free(sp);
spin_unlock_irqrestore(&slob_lock, flags);
__ClearPageSlab(sp);
reset_page_mapcount(sp);
page_mapcount_reset(sp);
slob_free_pages(b, 0);
return;
}

2
mm/slub.c
View File

@ -1408,7 +1408,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
__ClearPageSlab(page);
memcg_release_pages(s, order);
reset_page_mapcount(page);
page_mapcount_reset(page);
if (current->reclaim_state)
current->reclaim_state->reclaimed_slab += pages;
__free_memcg_kmem_pages(page, order);