diff options
| -rw-r--r-- | arch/s390/appldata/appldata_mem.c | 3 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sunos.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sys_sunos32.c | 2 | ||||
| -rw-r--r-- | drivers/base/node.c | 2 | ||||
| -rw-r--r-- | fs/proc/proc_misc.c | 3 | ||||
| -rw-r--r-- | include/linux/mmzone.h | 2 | ||||
| -rw-r--r-- | include/linux/pagemap.h | 45 | ||||
| -rw-r--r-- | mm/filemap.c | 4 | ||||
| -rw-r--r-- | mm/mmap.c | 2 | ||||
| -rw-r--r-- | mm/nommu.c | 2 | ||||
| -rw-r--r-- | mm/page_alloc.c | 5 | ||||
| -rw-r--r-- | mm/swap_state.c | 4 | ||||
| -rw-r--r-- | mm/vmstat.c | 7 |
13 files changed, 16 insertions, 67 deletions
diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c index 7915a197..180ba79 100644 --- a/arch/s390/appldata/appldata_mem.c +++ b/arch/s390/appldata/appldata_mem.c @@ -130,7 +130,8 @@ static void appldata_get_mem_data(void *data) mem_data->totalhigh = P2K(val.totalhigh); mem_data->freehigh = P2K(val.freehigh); mem_data->bufferram = P2K(val.bufferram); - mem_data->cached = P2K(atomic_read(&nr_pagecache) - val.bufferram); + mem_data->cached = P2K(global_page_state(NR_FILE_PAGES) + - val.bufferram); si_swapinfo(&val); mem_data->totalswap = P2K(val.totalswap); diff --git a/arch/sparc/kernel/sys_sunos.c b/arch/sparc/kernel/sys_sunos.c index 288de27..aa0fb2e 100644 --- a/arch/sparc/kernel/sys_sunos.c +++ b/arch/sparc/kernel/sys_sunos.c @@ -196,7 +196,7 @@ asmlinkage int sunos_brk(unsigned long brk) * simple, it hopefully works in most obvious cases.. Easy to * fool it, but this should catch most mistakes. */ - freepages = get_page_cache_size(); + freepages = global_page_state(NR_FILE_PAGES); freepages >>= 1; freepages += nr_free_pages(); freepages += nr_swap_pages; diff --git a/arch/sparc64/kernel/sys_sunos32.c b/arch/sparc64/kernel/sys_sunos32.c index ae5b32f..87ebdf8 100644 --- a/arch/sparc64/kernel/sys_sunos32.c +++ b/arch/sparc64/kernel/sys_sunos32.c @@ -155,7 +155,7 @@ asmlinkage int sunos_brk(u32 baddr) * simple, it hopefully works in most obvious cases.. Easy to * fool it, but this should catch most mistakes. */ - freepages = get_page_cache_size(); + freepages = global_page_state(NR_FILE_PAGES); freepages >>= 1; freepages += nr_free_pages(); freepages += nr_swap_pages; diff --git a/drivers/base/node.c b/drivers/base/node.c index 8b12323..ae9e3fe 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -69,6 +69,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) "Node %d LowFree: %8lu kB\n" "Node %d Dirty: %8lu kB\n" "Node %d Writeback: %8lu kB\n" + "Node %d FilePages: %8lu kB\n" "Node %d Mapped: %8lu kB\n" "Node %d Slab: %8lu kB\n", nid, K(i.totalram), @@ -82,6 +83,7 @@ static ssize_t node_read_meminfo(struct sys_device * dev, char * buf) nid, K(i.freeram - i.freehigh), nid, K(ps.nr_dirty), nid, K(ps.nr_writeback), + nid, K(node_page_state(nid, NR_FILE_PAGES)), nid, K(node_page_state(nid, NR_FILE_MAPPED)), nid, K(ps.nr_slab)); n += hugetlb_report_node_meminfo(nid, buf + n); diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c index bc7d9ab..1af12fd7 100644 --- a/fs/proc/proc_misc.c +++ b/fs/proc/proc_misc.c @@ -142,7 +142,8 @@ static int meminfo_read_proc(char *page, char **start, off_t off, allowed = ((totalram_pages - hugetlb_total_pages()) * sysctl_overcommit_ratio / 100) + total_swap_pages; - cached = get_page_cache_size() - total_swapcache_pages - i.bufferram; + cached = global_page_state(NR_FILE_PAGES) - + total_swapcache_pages - i.bufferram; if (cached < 0) cached = 0; diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index eb42c12..08be91e 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -49,7 +49,7 @@ struct zone_padding { enum zone_stat_item { NR_FILE_MAPPED, /* mapped into pagetables. only modified from process context */ - + NR_FILE_PAGES, NR_VM_ZONE_STAT_ITEMS }; struct per_cpu_pages { diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 1245df7..0a2f5d2 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -113,51 +113,6 @@ int add_to_page_cache_lru(struct page *page, struct address_space *mapping, extern void remove_from_page_cache(struct page *page); extern void __remove_from_page_cache(struct page *page); -extern atomic_t nr_pagecache; - -#ifdef CONFIG_SMP - -#define PAGECACHE_ACCT_THRESHOLD max(16, NR_CPUS * 2) -DECLARE_PER_CPU(long, nr_pagecache_local); - -/* - * pagecache_acct implements approximate accounting for pagecache. - * vm_enough_memory() do not need high accuracy. Writers will keep - * an offset in their per-cpu arena and will spill that into the - * global count whenever the absolute value of the local count - * exceeds the counter's threshold. - * - * MUST be protected from preemption. - * current protection is mapping->page_lock. - */ -static inline void pagecache_acct(int count) -{ - long *local; - - local = &__get_cpu_var(nr_pagecache_local); - *local += count; - if (*local > PAGECACHE_ACCT_THRESHOLD || *local < -PAGECACHE_ACCT_THRESHOLD) { - atomic_add(*local, &nr_pagecache); - *local = 0; - } -} - -#else - -static inline void pagecache_acct(int count) -{ - atomic_add(count, &nr_pagecache); -} -#endif - -static inline unsigned long get_page_cache_size(void) -{ - int ret = atomic_read(&nr_pagecache); - if (unlikely(ret < 0)) - ret = 0; - return ret; -} - /* * Return byte-offset into filesystem object for page. */ diff --git a/mm/filemap.c b/mm/filemap.c index 648f2c0..87d62c4 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -120,7 +120,7 @@ void __remove_from_page_cache(struct page *page) radix_tree_delete(&mapping->page_tree, page->index); page->mapping = NULL; mapping->nrpages--; - pagecache_acct(-1); + __dec_zone_page_state(page, NR_FILE_PAGES); } void remove_from_page_cache(struct page *page) @@ -449,7 +449,7 @@ int add_to_page_cache(struct page *page, struct address_space *mapping, page->mapping = mapping; page->index = offset; mapping->nrpages++; - pagecache_acct(1); + __inc_zone_page_state(page, NR_FILE_PAGES); } write_unlock_irq(&mapping->tree_lock); radix_tree_preload_end(); @@ -96,7 +96,7 @@ int __vm_enough_memory(long pages, int cap_sys_admin) if (sysctl_overcommit_memory == OVERCOMMIT_GUESS) { unsigned long n; - free = get_page_cache_size(); + free = global_page_state(NR_FILE_PAGES); free += nr_swap_pages; /* @@ -1122,7 +1122,7 @@ int __vm_enough_memory(long pages, int cap_sys_admin) if (sysctl_overcommit_memory == OVERCOMMIT_GUESS) { unsigned long n; - free = get_page_cache_size(); + free = global_page_state(NR_FILE_PAGES); free += nr_swap_pages; /* diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 04dd2b0..8350720 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2124,16 +2124,11 @@ static int page_alloc_cpu_notify(struct notifier_block *self, unsigned long action, void *hcpu) { int cpu = (unsigned long)hcpu; - long *count; unsigned long *src, *dest; if (action == CPU_DEAD) { int i; - /* Drain local pagecache count. */ - count = &per_cpu(nr_pagecache_local, cpu); - atomic_add(*count, &nr_pagecache); - *count = 0; local_irq_disable(); __drain_pages(cpu); diff --git a/mm/swap_state.c b/mm/swap_state.c index 7535211..fccbd9b 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -87,7 +87,7 @@ static int __add_to_swap_cache(struct page *page, swp_entry_t entry, SetPageSwapCache(page); set_page_private(page, entry.val); total_swapcache_pages++; - pagecache_acct(1); + __inc_zone_page_state(page, NR_FILE_PAGES); } write_unlock_irq(&swapper_space.tree_lock); radix_tree_preload_end(); @@ -132,7 +132,7 @@ void __delete_from_swap_cache(struct page *page) set_page_private(page, 0); ClearPageSwapCache(page); total_swapcache_pages--; - pagecache_acct(-1); + __dec_zone_page_state(page, NR_FILE_PAGES); INC_CACHE_INFO(del_total); } diff --git a/mm/vmstat.c b/mm/vmstat.c index 4800091..f16b33e 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -20,12 +20,6 @@ */ DEFINE_PER_CPU(struct page_state, page_states) = {0}; -atomic_t nr_pagecache = ATOMIC_INIT(0); -EXPORT_SYMBOL(nr_pagecache); -#ifdef CONFIG_SMP -DEFINE_PER_CPU(long, nr_pagecache_local) = 0; -#endif - static void __get_page_state(struct page_state *ret, int nr, cpumask_t *cpumask) { unsigned cpu; @@ -402,6 +396,7 @@ struct seq_operations fragmentation_op = { static char *vmstat_text[] = { /* Zoned VM counters */ "nr_mapped", + "nr_file_pages", /* Page state */ "nr_dirty", |
