diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/madvise.c | 8 | ||||
| -rw-r--r-- | mm/mmzone.c | 15 | ||||
| -rw-r--r-- | mm/page-writeback.c | 6 | ||||
| -rw-r--r-- | mm/pdflush.c | 31 | ||||
| -rw-r--r-- | mm/slob.c | 5 | ||||
| -rw-r--r-- | mm/slub.c | 6 | ||||
| -rw-r--r-- | mm/vmstat.c | 19 |
7 files changed, 43 insertions, 47 deletions
diff --git a/mm/madvise.c b/mm/madvise.c index 36d6ea2b634..b9ce574827c 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -112,14 +112,6 @@ static long madvise_willneed(struct vm_area_struct * vma, if (!file) return -EBADF; - /* - * Page cache readahead assumes page cache pages are order-0 which - * is not the case for hugetlbfs. Do not give a bad return value - * but ignore the advice. - */ - if (vma->vm_flags & VM_HUGETLB) - return 0; - if (file->f_mapping->a_ops->get_xip_mem) { /* no bad return value, but ignore advice */ return 0; diff --git a/mm/mmzone.c b/mm/mmzone.c index 16ce8b955dc..f5b7d176021 100644 --- a/mm/mmzone.c +++ b/mm/mmzone.c @@ -6,6 +6,7 @@ #include <linux/stddef.h> +#include <linux/mm.h> #include <linux/mmzone.h> #include <linux/module.h> @@ -72,3 +73,17 @@ struct zoneref *next_zones_zonelist(struct zoneref *z, *zone = zonelist_zone(z); return z; } + +#ifdef CONFIG_ARCH_HAS_HOLES_MEMORYMODEL +int memmap_valid_within(unsigned long pfn, + struct page *page, struct zone *zone) +{ + if (page_to_pfn(page) != pfn) + return 0; + + if (page_zone(page) != zone) + return 0; + + return 1; +} +#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */ diff --git a/mm/page-writeback.c b/mm/page-writeback.c index 30351f0063a..bb553c3e955 100644 --- a/mm/page-writeback.c +++ b/mm/page-writeback.c @@ -94,12 +94,12 @@ unsigned long vm_dirty_bytes; /* * The interval between `kupdate'-style writebacks */ -unsigned int dirty_writeback_interval = 5 * 100; /* sentiseconds */ +unsigned int dirty_writeback_interval = 5 * 100; /* centiseconds */ /* * The longest time for which data is allowed to remain dirty */ -unsigned int dirty_expire_interval = 30 * 100; /* sentiseconds */ +unsigned int dirty_expire_interval = 30 * 100; /* centiseconds */ /* * Flag that makes the machine dump writes/reads and block dirtyings. @@ -770,7 +770,7 @@ static void wb_kupdate(unsigned long arg) sync_supers(); - oldest_jif = jiffies - msecs_to_jiffies(dirty_expire_interval); + oldest_jif = jiffies - msecs_to_jiffies(dirty_expire_interval * 10); start_jif = jiffies; next_jif = start_jif + msecs_to_jiffies(dirty_writeback_interval * 10); nr_to_write = global_page_state(NR_FILE_DIRTY) + diff --git a/mm/pdflush.c b/mm/pdflush.c index f2caf96993f..235ac440c44 100644 --- a/mm/pdflush.c +++ b/mm/pdflush.c @@ -58,14 +58,6 @@ static DEFINE_SPINLOCK(pdflush_lock); int nr_pdflush_threads = 0; /* - * The max/min number of pdflush threads. R/W by sysctl at - * /proc/sys/vm/nr_pdflush_threads_max/min - */ -int nr_pdflush_threads_max __read_mostly = MAX_PDFLUSH_THREADS; -int nr_pdflush_threads_min __read_mostly = MIN_PDFLUSH_THREADS; - - -/* * The time at which the pdflush thread pool last went empty */ static unsigned long last_empty_jifs; @@ -76,7 +68,7 @@ static unsigned long last_empty_jifs; * Thread pool management algorithm: * * - The minimum and maximum number of pdflush instances are bound - * by nr_pdflush_threads_min and nr_pdflush_threads_max. + * by MIN_PDFLUSH_THREADS and MAX_PDFLUSH_THREADS. * * - If there have been no idle pdflush instances for 1 second, create * a new one. @@ -142,13 +134,14 @@ static int __pdflush(struct pdflush_work *my_work) * To throttle creation, we reset last_empty_jifs. */ if (time_after(jiffies, last_empty_jifs + 1 * HZ)) { - if (list_empty(&pdflush_list) && - nr_pdflush_threads < nr_pdflush_threads_max) { - last_empty_jifs = jiffies; - nr_pdflush_threads++; - spin_unlock_irq(&pdflush_lock); - start_one_pdflush_thread(); - spin_lock_irq(&pdflush_lock); + if (list_empty(&pdflush_list)) { + if (nr_pdflush_threads < MAX_PDFLUSH_THREADS) { + last_empty_jifs = jiffies; + nr_pdflush_threads++; + spin_unlock_irq(&pdflush_lock); + start_one_pdflush_thread(); + spin_lock_irq(&pdflush_lock); + } } } @@ -160,7 +153,7 @@ static int __pdflush(struct pdflush_work *my_work) */ if (list_empty(&pdflush_list)) continue; - if (nr_pdflush_threads <= nr_pdflush_threads_min) + if (nr_pdflush_threads <= MIN_PDFLUSH_THREADS) continue; pdf = list_entry(pdflush_list.prev, struct pdflush_work, list); if (time_after(jiffies, pdf->when_i_went_to_sleep + 1 * HZ)) { @@ -266,9 +259,9 @@ static int __init pdflush_init(void) * Pre-set nr_pdflush_threads... If we fail to create, * the count will be decremented. */ - nr_pdflush_threads = nr_pdflush_threads_min; + nr_pdflush_threads = MIN_PDFLUSH_THREADS; - for (i = 0; i < nr_pdflush_threads_min; i++) + for (i = 0; i < MIN_PDFLUSH_THREADS; i++) start_one_pdflush_thread(); return 0; } diff --git a/mm/slob.c b/mm/slob.c index a2d4ab32198..f92e66d558b 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -60,6 +60,7 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/mm.h> +#include <linux/swap.h> /* struct reclaim_state */ #include <linux/cache.h> #include <linux/init.h> #include <linux/module.h> @@ -255,6 +256,8 @@ static void *slob_new_pages(gfp_t gfp, int order, int node) static void slob_free_pages(void *b, int order) { + if (current->reclaim_state) + current->reclaim_state->reclaimed_slab += 1 << order; free_pages((unsigned long)b, order); } @@ -407,7 +410,7 @@ static void slob_free(void *block, int size) spin_unlock_irqrestore(&slob_lock, flags); clear_slob_page(sp); free_slob_page(sp); - free_page((unsigned long)b); + slob_free_pages(b, 0); return; } diff --git a/mm/slub.c b/mm/slub.c index 7ab54ecbd3f..65ffda5934b 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -9,6 +9,7 @@ */ #include <linux/mm.h> +#include <linux/swap.h> /* struct reclaim_state */ #include <linux/module.h> #include <linux/bit_spinlock.h> #include <linux/interrupt.h> @@ -1170,6 +1171,8 @@ static void __free_slab(struct kmem_cache *s, struct page *page) __ClearPageSlab(page); reset_page_mapcount(page); + if (current->reclaim_state) + current->reclaim_state->reclaimed_slab += pages; __free_pages(page, order); } @@ -1909,7 +1912,7 @@ static inline int calculate_order(int size) * Doh this slab cannot be placed using slub_max_order. */ order = slab_order(size, 1, MAX_ORDER, 1); - if (order <= MAX_ORDER) + if (order < MAX_ORDER) return order; return -ENOSYS; } @@ -2522,6 +2525,7 @@ __setup("slub_min_order=", setup_slub_min_order); static int __init setup_slub_max_order(char *str) { get_option(&str, &slub_max_order); + slub_max_order = min(slub_max_order, MAX_ORDER - 1); return 1; } diff --git a/mm/vmstat.c b/mm/vmstat.c index 66f6130976c..74d66dba0cb 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -509,22 +509,11 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m, continue; page = pfn_to_page(pfn); -#ifdef CONFIG_ARCH_FLATMEM_HAS_HOLES - /* - * Ordinarily, memory holes in flatmem still have a valid - * memmap for the PFN range. However, an architecture for - * embedded systems (e.g. ARM) can free up the memmap backing - * holes to save memory on the assumption the memmap is - * never used. The page_zone linkages are then broken even - * though pfn_valid() returns true. Skip the page if the - * linkages are broken. Even if this test passed, the impact - * is that the counters for the movable type are off but - * fragmentation monitoring is likely meaningless on small - * systems. - */ - if (page_zone(page) != zone) + + /* Watch for unexpected holes punched in the memmap */ + if (!memmap_valid_within(pfn, page, zone)) continue; -#endif + mtype = get_pageblock_migratetype(page); if (mtype < MIGRATE_TYPES) |