The patch titled thp: fix anon memory statistics with transparent hugepages has been removed from the -mm tree. Its filename was thp-fix-anon-memory-statistics-with-transparent-hugepages.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: thp: fix anon memory statistics with transparent hugepages From: Rik van Riel <riel@xxxxxxxxxx> Count each transparent hugepage as HPAGE_PMD_NR pages in the LRU statistics, so the Active(anon) and Inactive(anon) statistics in /proc/meminfo are correct. Signed-off-by: Rik van Riel <riel@xxxxxxxxxx> Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/huge_mm.h | 8 ++++++++ include/linux/mm_inline.h | 8 +++++--- mm/huge_memory.c | 10 ++++++++++ mm/memcontrol.c | 2 +- mm/vmscan.c | 11 ++++++----- 5 files changed, 30 insertions(+), 9 deletions(-) diff -puN include/linux/huge_mm.h~thp-fix-anon-memory-statistics-with-transparent-hugepages include/linux/huge_mm.h --- a/include/linux/huge_mm.h~thp-fix-anon-memory-statistics-with-transparent-hugepages +++ a/include/linux/huge_mm.h @@ -117,11 +117,19 @@ static inline void vma_adjust_trans_huge return; __vma_adjust_trans_huge(vma, start, end, adjust_next); } +static inline int hpage_nr_pages(struct page *page) +{ + if (unlikely(PageTransHuge(page))) + return HPAGE_PMD_NR; + return 1; +} #else /* CONFIG_TRANSPARENT_HUGEPAGE */ #define HPAGE_PMD_SHIFT ({ BUG(); 0; }) #define HPAGE_PMD_MASK ({ BUG(); 0; }) #define HPAGE_PMD_SIZE ({ BUG(); 0; }) +#define hpage_nr_pages(x) 1 + #define transparent_hugepage_enabled(__vma) 0 #define transparent_hugepage_flags 0UL diff -puN include/linux/mm_inline.h~thp-fix-anon-memory-statistics-with-transparent-hugepages include/linux/mm_inline.h --- a/include/linux/mm_inline.h~thp-fix-anon-memory-statistics-with-transparent-hugepages +++ a/include/linux/mm_inline.h @@ -1,6 +1,8 @@ #ifndef LINUX_MM_INLINE_H #define LINUX_MM_INLINE_H +#include <linux/huge_mm.h> + /** * page_is_file_cache - should the page be on a file LRU or anon LRU? * @page: the page to test @@ -24,7 +26,7 @@ __add_page_to_lru_list(struct zone *zone struct list_head *head) { list_add(&page->lru, head); - __inc_zone_state(zone, NR_LRU_BASE + l); + __mod_zone_page_state(zone, NR_LRU_BASE + l, hpage_nr_pages(page)); mem_cgroup_add_lru_list(page, l); } @@ -38,7 +40,7 @@ static inline void del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l) { list_del(&page->lru); - __dec_zone_state(zone, NR_LRU_BASE + l); + __mod_zone_page_state(zone, NR_LRU_BASE + l, -hpage_nr_pages(page)); mem_cgroup_del_lru_list(page, l); } @@ -73,7 +75,7 @@ del_page_from_lru(struct zone *zone, str l += LRU_ACTIVE; } } - __dec_zone_state(zone, NR_LRU_BASE + l); + __mod_zone_page_state(zone, NR_LRU_BASE + l, -hpage_nr_pages(page)); mem_cgroup_del_lru_list(page, l); } diff -puN mm/huge_memory.c~thp-fix-anon-memory-statistics-with-transparent-hugepages mm/huge_memory.c --- a/mm/huge_memory.c~thp-fix-anon-memory-statistics-with-transparent-hugepages +++ a/mm/huge_memory.c @@ -1143,6 +1143,7 @@ static void __split_huge_page_refcount(s int i; unsigned long head_index = page->index; struct zone *zone = page_zone(page); + int zonestat; /* prevent PageLRU to go away from under us, and freeze lru stats */ spin_lock_irq(&zone->lru_lock); @@ -1207,6 +1208,15 @@ static void __split_huge_page_refcount(s __dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); __mod_zone_page_state(zone, NR_ANON_PAGES, HPAGE_PMD_NR); + /* + * A hugepage counts for HPAGE_PMD_NR pages on the LRU statistics, + * so adjust those appropriately if this page is on the LRU. + */ + if (PageLRU(page)) { + zonestat = NR_LRU_BASE + page_lru(page); + __mod_zone_page_state(zone, zonestat, -(HPAGE_PMD_NR-1)); + } + ClearPageCompound(page); compound_unlock(page); spin_unlock_irq(&zone->lru_lock); diff -puN mm/memcontrol.c~thp-fix-anon-memory-statistics-with-transparent-hugepages mm/memcontrol.c --- a/mm/memcontrol.c~thp-fix-anon-memory-statistics-with-transparent-hugepages +++ a/mm/memcontrol.c @@ -1091,7 +1091,7 @@ unsigned long mem_cgroup_isolate_pages(u case 0: list_move(&page->lru, dst); mem_cgroup_del_lru(page); - nr_taken++; + nr_taken += hpage_nr_pages(page); break; case -EBUSY: /* we don't affect global LRU but rotate in our LRU */ diff -puN mm/vmscan.c~thp-fix-anon-memory-statistics-with-transparent-hugepages mm/vmscan.c --- a/mm/vmscan.c~thp-fix-anon-memory-statistics-with-transparent-hugepages +++ a/mm/vmscan.c @@ -1045,7 +1045,7 @@ static unsigned long isolate_lru_pages(u case 0: list_move(&page->lru, dst); mem_cgroup_del_lru(page); - nr_taken++; + nr_taken += hpage_nr_pages(page); break; case -EBUSY: @@ -1103,7 +1103,7 @@ static unsigned long isolate_lru_pages(u if (__isolate_lru_page(cursor_page, mode, file) == 0) { list_move(&cursor_page->lru, dst); mem_cgroup_del_lru(cursor_page); - nr_taken++; + nr_taken += hpage_nr_pages(page); nr_lumpy_taken++; if (PageDirty(cursor_page)) nr_lumpy_dirty++; @@ -1158,14 +1158,15 @@ static unsigned long clear_active_flags( struct page *page; list_for_each_entry(page, page_list, lru) { + int numpages = hpage_nr_pages(page); lru = page_lru_base_type(page); if (PageActive(page)) { lru += LRU_ACTIVE; ClearPageActive(page); - nr_active++; + nr_active += numpages; } if (count) - count[lru]++; + count[lru] += numpages; } return nr_active; @@ -1483,7 +1484,7 @@ static void move_active_pages_to_lru(str list_move(&page->lru, &zone->lru[lru].list); mem_cgroup_add_lru_list(page, lru); - pgmoved++; + pgmoved += hpage_nr_pages(page); if (!pagevec_add(&pvec, page) || list_empty(list)) { spin_unlock_irq(&zone->lru_lock); _ Patches currently in -mm which might be from riel@xxxxxxxxxx are origin.patch linux-next.patch writeback-io-less-balance_dirty_pages.patch writeback-consolidate-variable-names-in-balance_dirty_pages.patch writeback-per-task-rate-limit-on-balance_dirty_pages.patch writeback-per-task-rate-limit-on-balance_dirty_pages-fix.patch writeback-prevent-duplicate-balance_dirty_pages_ratelimited-calls.patch writeback-account-per-bdi-accumulated-written-pages.patch writeback-bdi-write-bandwidth-estimation.patch writeback-bdi-write-bandwidth-estimation-fix.patch writeback-show-bdi-write-bandwidth-in-debugfs.patch writeback-quit-throttling-when-bdi-dirty-pages-dropped-low.patch writeback-reduce-per-bdi-dirty-threshold-ramp-up-time.patch writeback-make-reasonable-gap-between-the-dirty-background-thresholds.patch writeback-scale-down-max-throttle-bandwidth-on-concurrent-dirtiers.patch writeback-add-trace-event-for-balance_dirty_pages.patch writeback-make-nr_to_write-a-per-file-limit.patch writeback-make-nr_to_write-a-per-file-limit-fix.patch mm-deactivate-invalidated-pages.patch mm-deactivate-invalidated-pages-fix.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html