apfs/linux-apfs
0
0
Fork 0
mirror of https://github.com/linux-apfs/linux-apfs.git synced 2026-05-01 15:00:59 -07:00
Code Issues Packages Projects Releases Wiki Activity

cma: fix counting of isolated pages

Browse Source 
Isolated free pages shouldn't be accounted to NR_FREE_PAGES counter.  Fix
it by properly decreasing/increasing NR_FREE_PAGES counter in
set_migratetype_isolate()/unset_migratetype_isolate() and removing counter
adjustment for isolated pages from free_one_page() and split_free_page().

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Michal Nazarewicz <mina86@mina86.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2012-10-08 16:32:00 -07:00
committed by Linus Torvalds
parent 770c8aaaf6
commit 2139cbe627
2 changed files with 16 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mm/page_isolation.c
+9 -3
View File
@@ -76,8 +76,12 @@ int set_migratetype_isolate(struct page *page)
out:
if (!ret) {
unsigned long nr_pages;
set_pageblock_isolate(page);
move_freepages_block(zone, page, MIGRATE_ISOLATE);
nr_pages = move_freepages_block(zone, page, MIGRATE_ISOLATE);
__mod_zone_page_state(zone, NR_FREE_PAGES, -nr_pages);
}
spin_unlock_irqrestore(&zone->lock, flags);
@@ -89,12 +93,14 @@ out:
void unset_migratetype_isolate(struct page *page, unsigned migratetype)
{
struct zone *zone;
unsigned long flags;
unsigned long flags, nr_pages;
zone = page_zone(page);
spin_lock_irqsave(&zone->lock, flags);
if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE)
goto out;
move_freepages_block(zone, page, migratetype);
nr_pages = move_freepages_block(zone, page, migratetype);
__mod_zone_page_state(zone, NR_FREE_PAGES, nr_pages);
restore_pageblock_isolate(page, migratetype);
out:
spin_unlock_irqrestore(&zone->lock, flags);