diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/backing-dev.c | 3 | ||||
| -rw-r--r-- | mm/memory_hotplug.c | 9 | ||||
| -rw-r--r-- | mm/migrate.c | 59 | ||||
| -rw-r--r-- | mm/page_cgroup.c | 59 | ||||
| -rw-r--r-- | mm/slob.c | 2 | ||||
| -rw-r--r-- | mm/slub.c | 8 | ||||
| -rw-r--r-- | mm/sparse.c | 2 | ||||
| -rw-r--r-- | mm/swap.c | 20 | ||||
| -rw-r--r-- | mm/vmalloc.c | 22 | ||||
| -rw-r--r-- | mm/vmscan.c | 2 |
10 files changed, 124 insertions, 62 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index f2e574dbc30..801c08b046e 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -176,6 +176,9 @@ int bdi_register(struct backing_dev_info *bdi, struct device *parent, int ret = 0; struct device *dev; + if (bdi->dev) /* The driver needs to use separate queues per device */ + goto exit; + va_start(args, fmt); dev = device_create_vargs(bdi_class, parent, MKDEV(0, 0), bdi, fmt, args); va_end(args); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index b5b2b15085a..b1737118546 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -189,7 +189,7 @@ static void grow_pgdat_span(struct pglist_data *pgdat, unsigned long start_pfn, pgdat->node_start_pfn; } -static int __add_zone(struct zone *zone, unsigned long phys_start_pfn) +static int __meminit __add_zone(struct zone *zone, unsigned long phys_start_pfn) { struct pglist_data *pgdat = zone->zone_pgdat; int nr_pages = PAGES_PER_SECTION; @@ -216,7 +216,7 @@ static int __add_zone(struct zone *zone, unsigned long phys_start_pfn) return 0; } -static int __add_section(struct zone *zone, unsigned long phys_start_pfn) +static int __meminit __add_section(struct zone *zone, unsigned long phys_start_pfn) { int nr_pages = PAGES_PER_SECTION; int ret; @@ -273,7 +273,7 @@ static int __remove_section(struct zone *zone, struct mem_section *ms) * call this function after deciding the zone to which to * add the new pages. */ -int __add_pages(struct zone *zone, unsigned long phys_start_pfn, +int __ref __add_pages(struct zone *zone, unsigned long phys_start_pfn, unsigned long nr_pages) { unsigned long i; @@ -470,7 +470,8 @@ static void rollback_node_hotadd(int nid, pg_data_t *pgdat) } -int add_memory(int nid, u64 start, u64 size) +/* we are OK calling __meminit stuff here - we have CONFIG_MEMORY_HOTPLUG */ +int __ref add_memory(int nid, u64 start, u64 size) { pg_data_t *pgdat = NULL; int new_pgdat = 0; diff --git a/mm/migrate.c b/mm/migrate.c index 1e0d6b237f4..037b0967c1e 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -987,25 +987,18 @@ out: /* * Determine the nodes of an array of pages and store it in an array of status. */ -static int do_pages_stat(struct mm_struct *mm, unsigned long nr_pages, - const void __user * __user *pages, - int __user *status) +static void do_pages_stat_array(struct mm_struct *mm, unsigned long nr_pages, + const void __user **pages, int *status) { unsigned long i; - int err; down_read(&mm->mmap_sem); for (i = 0; i < nr_pages; i++) { - const void __user *p; - unsigned long addr; + unsigned long addr = (unsigned long)(*pages); struct vm_area_struct *vma; struct page *page; - - err = -EFAULT; - if (get_user(p, pages+i)) - goto out; - addr = (unsigned long) p; + int err = -EFAULT; vma = find_vma(mm, addr); if (!vma) @@ -1024,12 +1017,52 @@ static int do_pages_stat(struct mm_struct *mm, unsigned long nr_pages, err = page_to_nid(page); set_status: - put_user(err, status+i); + *status = err; + + pages++; + status++; + } + + up_read(&mm->mmap_sem); +} + +/* + * Determine the nodes of a user array of pages and store it in + * a user array of status. + */ +static int do_pages_stat(struct mm_struct *mm, unsigned long nr_pages, + const void __user * __user *pages, + int __user *status) +{ +#define DO_PAGES_STAT_CHUNK_NR 16 + const void __user *chunk_pages[DO_PAGES_STAT_CHUNK_NR]; + int chunk_status[DO_PAGES_STAT_CHUNK_NR]; + unsigned long i, chunk_nr = DO_PAGES_STAT_CHUNK_NR; + int err; + + for (i = 0; i < nr_pages; i += chunk_nr) { + if (chunk_nr + i > nr_pages) + chunk_nr = nr_pages - i; + + err = copy_from_user(chunk_pages, &pages[i], + chunk_nr * sizeof(*chunk_pages)); + if (err) { + err = -EFAULT; + goto out; + } + + do_pages_stat_array(mm, chunk_nr, chunk_pages, chunk_status); + + err = copy_to_user(&status[i], chunk_status, + chunk_nr * sizeof(*chunk_status)); + if (err) { + err = -EFAULT; + goto out; + } } err = 0; out: - up_read(&mm->mmap_sem); return err; } diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c index 1223d927904..ab27ff75051 100644 --- a/mm/page_cgroup.c +++ b/mm/page_cgroup.c @@ -21,7 +21,7 @@ static unsigned long total_usage; #if !defined(CONFIG_SPARSEMEM) -void __init pgdat_page_cgroup_init(struct pglist_data *pgdat) +void __meminit pgdat_page_cgroup_init(struct pglist_data *pgdat) { pgdat->node_page_cgroup = NULL; } @@ -49,6 +49,9 @@ static int __init alloc_node_page_cgroup(int nid) start_pfn = NODE_DATA(nid)->node_start_pfn; nr_pages = NODE_DATA(nid)->node_spanned_pages; + if (!nr_pages) + return 0; + table_size = sizeof(struct page_cgroup) * nr_pages; base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), @@ -97,7 +100,8 @@ struct page_cgroup *lookup_page_cgroup(struct page *page) return section->page_cgroup + pfn; } -int __meminit init_section_page_cgroup(unsigned long pfn) +/* __alloc_bootmem...() is protected by !slab_available() */ +int __init_refok init_section_page_cgroup(unsigned long pfn) { struct mem_section *section; struct page_cgroup *base, *pc; @@ -106,19 +110,29 @@ int __meminit init_section_page_cgroup(unsigned long pfn) section = __pfn_to_section(pfn); - if (section->page_cgroup) - return 0; - - nid = page_to_nid(pfn_to_page(pfn)); - - table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION; - if (slab_is_available()) { - base = kmalloc_node(table_size, GFP_KERNEL, nid); - if (!base) - base = vmalloc_node(table_size, nid); - } else { - base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), table_size, + if (!section->page_cgroup) { + nid = page_to_nid(pfn_to_page(pfn)); + table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION; + if (slab_is_available()) { + base = kmalloc_node(table_size, GFP_KERNEL, nid); + if (!base) + base = vmalloc_node(table_size, nid); + } else { + base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), + table_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); + } + } else { + /* + * We don't have to allocate page_cgroup again, but + * address of memmap may be changed. So, we have to initialize + * again. + */ + base = section->page_cgroup + pfn; + table_size = 0; + /* check address of memmap is changed or not. */ + if (base->page == pfn_to_page(pfn)) + return 0; } if (!base) { @@ -158,7 +172,7 @@ void __free_page_cgroup(unsigned long pfn) } } -int online_page_cgroup(unsigned long start_pfn, +int __meminit online_page_cgroup(unsigned long start_pfn, unsigned long nr_pages, int nid) { @@ -183,7 +197,7 @@ int online_page_cgroup(unsigned long start_pfn, return -ENOMEM; } -int offline_page_cgroup(unsigned long start_pfn, +int __meminit offline_page_cgroup(unsigned long start_pfn, unsigned long nr_pages, int nid) { unsigned long start, end, pfn; @@ -197,7 +211,7 @@ int offline_page_cgroup(unsigned long start_pfn, } -static int page_cgroup_callback(struct notifier_block *self, +static int __meminit page_cgroup_callback(struct notifier_block *self, unsigned long action, void *arg) { struct memory_notify *mn = arg; @@ -207,18 +221,23 @@ static int page_cgroup_callback(struct notifier_block *self, ret = online_page_cgroup(mn->start_pfn, mn->nr_pages, mn->status_change_nid); break; - case MEM_CANCEL_ONLINE: case MEM_OFFLINE: offline_page_cgroup(mn->start_pfn, mn->nr_pages, mn->status_change_nid); break; + case MEM_CANCEL_ONLINE: case MEM_GOING_OFFLINE: break; case MEM_ONLINE: case MEM_CANCEL_OFFLINE: break; } - ret = notifier_from_errno(ret); + + if (ret) + ret = notifier_from_errno(ret); + else + ret = NOTIFY_OK; + return ret; } @@ -248,7 +267,7 @@ void __init page_cgroup_init(void) " want\n"); } -void __init pgdat_page_cgroup_init(struct pglist_data *pgdat) +void __meminit pgdat_page_cgroup_init(struct pglist_data *pgdat) { return; } diff --git a/mm/slob.c b/mm/slob.c index cb675d12679..bf7e8fc3aed 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -535,7 +535,7 @@ struct kmem_cache *kmem_cache_create(const char *name, size_t size, struct kmem_cache *c; c = slob_alloc(sizeof(struct kmem_cache), - flags, ARCH_KMALLOC_MINALIGN, -1); + GFP_KERNEL, ARCH_KMALLOC_MINALIGN, -1); if (c) { c->name = name; diff --git a/mm/slub.c b/mm/slub.c index 7ad489af956..a2cd47d89e0 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -2931,8 +2931,10 @@ static int slab_memory_callback(struct notifier_block *self, case MEM_CANCEL_OFFLINE: break; } - - ret = notifier_from_errno(ret); + if (ret) + ret = notifier_from_errno(ret); + else + ret = NOTIFY_OK; return ret; } @@ -3595,7 +3597,7 @@ static int list_locations(struct kmem_cache *s, char *buf, for (i = 0; i < t.count; i++) { struct location *l = &t.loc[i]; - if (len > PAGE_SIZE - 100) + if (len > PAGE_SIZE - KSYM_SYMBOL_LEN - 100) break; len += sprintf(buf + len, "%7ld ", l->count); diff --git a/mm/sparse.c b/mm/sparse.c index 39db301b920..083f5b63e7a 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -570,7 +570,7 @@ static void free_section_usemap(struct page *memmap, unsigned long *usemap) * set. If this is <=0, then that means that the passed-in * map was not consumed and must be freed. */ -int sparse_add_one_section(struct zone *zone, unsigned long start_pfn, +int __meminit sparse_add_one_section(struct zone *zone, unsigned long start_pfn, int nr_pages) { unsigned long section_nr = pfn_to_section_nr(start_pfn); diff --git a/mm/swap.c b/mm/swap.c index 2152e48a7b8..b135ec90cde 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -299,7 +299,6 @@ void lru_add_drain(void) put_cpu(); } -#if defined(CONFIG_NUMA) || defined(CONFIG_UNEVICTABLE_LRU) static void lru_add_drain_per_cpu(struct work_struct *dummy) { lru_add_drain(); @@ -313,18 +312,6 @@ int lru_add_drain_all(void) return schedule_on_each_cpu(lru_add_drain_per_cpu); } -#else - -/* - * Returns 0 for success - */ -int lru_add_drain_all(void) -{ - lru_add_drain(); - return 0; -} -#endif - /* * Batched page_cache_release(). Decrement the reference count on all the * passed pages. If it fell to zero then remove the page from the LRU and @@ -445,6 +432,7 @@ void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru) for (i = 0; i < pagevec_count(pvec); i++) { struct page *page = pvec->pages[i]; struct zone *pagezone = page_zone(page); + int file; if (pagezone != zone) { if (zone) @@ -456,8 +444,12 @@ void ____pagevec_lru_add(struct pagevec *pvec, enum lru_list lru) VM_BUG_ON(PageUnevictable(page)); VM_BUG_ON(PageLRU(page)); SetPageLRU(page); - if (is_active_lru(lru)) + file = is_file_lru(lru); + zone->recent_scanned[file]++; + if (is_active_lru(lru)) { SetPageActive(page); + zone->recent_rotated[file]++; + } add_page_to_lru_list(zone, page, lru); } if (zone) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 30f826d484f..1ddb77ba399 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -77,7 +77,6 @@ static void vunmap_page_range(unsigned long addr, unsigned long end) BUG_ON(addr >= end); pgd = pgd_offset_k(addr); - flush_cache_vunmap(addr, end); do { next = pgd_addr_end(addr, end); if (pgd_none_or_clear_bad(pgd)) @@ -543,9 +542,10 @@ static void purge_vmap_area_lazy(void) } /* - * Free and unmap a vmap area + * Free and unmap a vmap area, caller ensuring flush_cache_vunmap had been + * called for the correct range previously. */ -static void free_unmap_vmap_area(struct vmap_area *va) +static void free_unmap_vmap_area_noflush(struct vmap_area *va) { va->flags |= VM_LAZY_FREE; atomic_add((va->va_end - va->va_start) >> PAGE_SHIFT, &vmap_lazy_nr); @@ -553,6 +553,15 @@ static void free_unmap_vmap_area(struct vmap_area *va) try_purge_vmap_area_lazy(); } +/* + * Free and unmap a vmap area + */ +static void free_unmap_vmap_area(struct vmap_area *va) +{ + flush_cache_vunmap(va->va_start, va->va_end); + free_unmap_vmap_area_noflush(va); +} + static struct vmap_area *find_vmap_area(unsigned long addr) { struct vmap_area *va; @@ -734,7 +743,7 @@ static void free_vmap_block(struct vmap_block *vb) spin_unlock(&vmap_block_tree_lock); BUG_ON(tmp != vb); - free_unmap_vmap_area(vb->va); + free_unmap_vmap_area_noflush(vb->va); call_rcu(&vb->rcu_head, rcu_free_vb); } @@ -796,6 +805,9 @@ static void vb_free(const void *addr, unsigned long size) BUG_ON(size & ~PAGE_MASK); BUG_ON(size > PAGE_SIZE*VMAP_MAX_ALLOC); + + flush_cache_vunmap((unsigned long)addr, (unsigned long)addr + size); + order = get_order(size); offset = (unsigned long)addr & (VMAP_BLOCK_SIZE - 1); @@ -1705,7 +1717,7 @@ static int s_show(struct seq_file *m, void *p) v->addr, v->addr + v->size, v->size); if (v->caller) { - char buff[2 * KSYM_NAME_LEN]; + char buff[KSYM_SYMBOL_LEN]; seq_putc(m, ' '); sprint_symbol(buff, (unsigned long)v->caller); diff --git a/mm/vmscan.c b/mm/vmscan.c index 7ea1440b53d..62e7f62fb55 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1248,6 +1248,7 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone, list_add(&page->lru, &l_inactive); } + spin_lock_irq(&zone->lru_lock); /* * Count referenced pages from currently used mappings as * rotated, even though they are moved to the inactive list. @@ -1263,7 +1264,6 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone, pgmoved = 0; lru = LRU_BASE + file * LRU_FILE; - spin_lock_irq(&zone->lru_lock); while (!list_empty(&l_inactive)) { page = lru_to_page(&l_inactive); prefetchw_prev_lru_page(page, &l_inactive, flags); |