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-rw-r--r--mm/bootmem.c4
-rw-r--r--mm/fadvise.c15
-rw-r--r--mm/filemap.c2
-rw-r--r--mm/memory.c8
-rw-r--r--mm/memory_hotplug.c44
-rw-r--r--mm/mmzone.c6
-rw-r--r--mm/nommu.c2
-rw-r--r--mm/slab.c78
-rw-r--r--mm/swap.c20
-rw-r--r--mm/swapfile.c3
-rw-r--r--mm/vmalloc.c7
-rw-r--r--mm/vmstat.c1
12 files changed, 119 insertions, 71 deletions
diff --git a/mm/bootmem.c b/mm/bootmem.c
index d213feded10d..50353e0dac12 100644
--- a/mm/bootmem.c
+++ b/mm/bootmem.c
@@ -29,9 +29,7 @@ unsigned long max_low_pfn;
unsigned long min_low_pfn;
unsigned long max_pfn;
-EXPORT_SYMBOL(max_pfn); /* This is exported so
- * dma_get_required_mask(), which uses
- * it, can be an inline function */
+EXPORT_UNUSED_SYMBOL(max_pfn); /* June 2006 */
static LIST_HEAD(bdata_list);
#ifdef CONFIG_CRASH_DUMP
diff --git a/mm/fadvise.c b/mm/fadvise.c
index 0a03357a1f8e..168c78a121bb 100644
--- a/mm/fadvise.c
+++ b/mm/fadvise.c
@@ -23,18 +23,6 @@
/*
* POSIX_FADV_WILLNEED could set PG_Referenced, and POSIX_FADV_NOREUSE could
* deactivate the pages and clear PG_Referenced.
- *
- * LINUX_FADV_ASYNC_WRITE: start async writeout of any dirty pages between file
- * offsets `offset' and `offset+len' inclusive. Any pages which are currently
- * under writeout are skipped, whether or not they are dirty.
- *
- * LINUX_FADV_WRITE_WAIT: wait upon writeout of any dirty pages between file
- * offsets `offset' and `offset+len'.
- *
- * By combining these two operations the application may do several things:
- *
- * LINUX_FADV_ASYNC_WRITE: push some or all of the dirty pages at the disk.
- *
*/
asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
{
@@ -85,7 +73,6 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
file->f_ra.ra_pages = bdi->ra_pages * 2;
break;
case POSIX_FADV_WILLNEED:
- case POSIX_FADV_NOREUSE:
if (!mapping->a_ops->readpage) {
ret = -EINVAL;
break;
@@ -106,6 +93,8 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
if (ret > 0)
ret = 0;
break;
+ case POSIX_FADV_NOREUSE:
+ break;
case POSIX_FADV_DONTNEED:
if (!bdi_write_congested(mapping->backing_dev_info))
filemap_flush(mapping);
diff --git a/mm/filemap.c b/mm/filemap.c
index d087fc3d3281..b9a60c43b61a 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -849,8 +849,6 @@ static void shrink_readahead_size_eio(struct file *filp,
return;
ra->ra_pages /= 4;
- printk(KERN_WARNING "Reducing readahead size to %luK\n",
- ra->ra_pages << (PAGE_CACHE_SHIFT - 10));
}
/**
diff --git a/mm/memory.c b/mm/memory.c
index c1e14c9e67e4..109e9866237e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -47,6 +47,7 @@
#include <linux/pagemap.h>
#include <linux/rmap.h>
#include <linux/module.h>
+#include <linux/delayacct.h>
#include <linux/init.h>
#include <asm/pgalloc.h>
@@ -1549,9 +1550,9 @@ gotten:
flush_cache_page(vma, address, pte_pfn(orig_pte));
entry = mk_pte(new_page, vma->vm_page_prot);
entry = maybe_mkwrite(pte_mkdirty(entry), vma);
+ lazy_mmu_prot_update(entry);
ptep_establish(vma, address, page_table, entry);
update_mmu_cache(vma, address, entry);
- lazy_mmu_prot_update(entry);
lru_cache_add_active(new_page);
page_add_new_anon_rmap(new_page, vma, address);
@@ -1853,7 +1854,7 @@ int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end)
return 0;
}
-EXPORT_SYMBOL(vmtruncate_range);
+EXPORT_UNUSED_SYMBOL(vmtruncate_range); /* June 2006 */
/*
* Primitive swap readahead code. We simply read an aligned block of
@@ -1934,6 +1935,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
migration_entry_wait(mm, pmd, address);
goto out;
}
+ delayacct_set_flag(DELAYACCT_PF_SWAPIN);
page = lookup_swap_cache(entry);
if (!page) {
swapin_readahead(entry, address, vma);
@@ -1946,6 +1948,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
page_table = pte_offset_map_lock(mm, pmd, address, &ptl);
if (likely(pte_same(*page_table, orig_pte)))
ret = VM_FAULT_OOM;
+ delayacct_clear_flag(DELAYACCT_PF_SWAPIN);
goto unlock;
}
@@ -1955,6 +1958,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
grab_swap_token();
}
+ delayacct_clear_flag(DELAYACCT_PF_SWAPIN);
mark_page_accessed(page);
lock_page(page);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 01c9fb97c619..c37319542b70 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -52,6 +52,9 @@ static int __add_section(struct zone *zone, unsigned long phys_start_pfn)
int nr_pages = PAGES_PER_SECTION;
int ret;
+ if (pfn_valid(phys_start_pfn))
+ return -EEXIST;
+
ret = sparse_add_one_section(zone, phys_start_pfn, nr_pages);
if (ret < 0)
@@ -76,15 +79,22 @@ int __add_pages(struct zone *zone, unsigned long phys_start_pfn,
{
unsigned long i;
int err = 0;
+ int start_sec, end_sec;
+ /* during initialize mem_map, align hot-added range to section */
+ start_sec = pfn_to_section_nr(phys_start_pfn);
+ end_sec = pfn_to_section_nr(phys_start_pfn + nr_pages - 1);
- for (i = 0; i < nr_pages; i += PAGES_PER_SECTION) {
- err = __add_section(zone, phys_start_pfn + i);
+ for (i = start_sec; i <= end_sec; i++) {
+ err = __add_section(zone, i << PFN_SECTION_SHIFT);
- /* We want to keep adding the rest of the
- * sections if the first ones already exist
+ /*
+ * EEXIST is finally dealed with by ioresource collision
+ * check. see add_memory() => register_memory_resource()
+ * Warning will be printed if there is collision.
*/
if (err && (err != -EEXIST))
break;
+ err = 0;
}
return err;
@@ -156,7 +166,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
res.flags = IORESOURCE_MEM; /* we just need system ram */
section_end = res.end;
- while (find_next_system_ram(&res) >= 0) {
+ while ((res.start < res.end) && (find_next_system_ram(&res) >= 0)) {
start_pfn = (unsigned long)(res.start >> PAGE_SHIFT);
nr_pages = (unsigned long)
((res.end + 1 - res.start) >> PAGE_SHIFT);
@@ -213,10 +223,9 @@ static void rollback_node_hotadd(int nid, pg_data_t *pgdat)
}
/* add this memory to iomem resource */
-static void register_memory_resource(u64 start, u64 size)
+static struct resource *register_memory_resource(u64 start, u64 size)
{
struct resource *res;
-
res = kzalloc(sizeof(struct resource), GFP_KERNEL);
BUG_ON(!res);
@@ -228,7 +237,18 @@ static void register_memory_resource(u64 start, u64 size)
printk("System RAM resource %llx - %llx cannot be added\n",
(unsigned long long)res->start, (unsigned long long)res->end);
kfree(res);
+ res = NULL;
}
+ return res;
+}
+
+static void release_memory_resource(struct resource *res)
+{
+ if (!res)
+ return;
+ release_resource(res);
+ kfree(res);
+ return;
}
@@ -237,8 +257,13 @@ int add_memory(int nid, u64 start, u64 size)
{
pg_data_t *pgdat = NULL;
int new_pgdat = 0;
+ struct resource *res;
int ret;
+ res = register_memory_resource(start, size);
+ if (!res)
+ return -EEXIST;
+
if (!node_online(nid)) {
pgdat = hotadd_new_pgdat(nid, start);
if (!pgdat)
@@ -268,14 +293,13 @@ int add_memory(int nid, u64 start, u64 size)
BUG_ON(ret);
}
- /* register this memory as resource */
- register_memory_resource(start, size);
-
return ret;
error:
/* rollback pgdat allocation and others */
if (new_pgdat)
rollback_node_hotadd(nid, pgdat);
+ if (res)
+ release_memory_resource(res);
return ret;
}
diff --git a/mm/mmzone.c b/mm/mmzone.c
index 0959ee1a4795..febea1c98168 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c
@@ -14,7 +14,7 @@ struct pglist_data *first_online_pgdat(void)
return NODE_DATA(first_online_node);
}
-EXPORT_SYMBOL(first_online_pgdat);
+EXPORT_UNUSED_SYMBOL(first_online_pgdat); /* June 2006 */
struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
{
@@ -24,7 +24,7 @@ struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
return NULL;
return NODE_DATA(nid);
}
-EXPORT_SYMBOL(next_online_pgdat);
+EXPORT_UNUSED_SYMBOL(next_online_pgdat); /* June 2006 */
/*
@@ -45,5 +45,5 @@ struct zone *next_zone(struct zone *zone)
}
return zone;
}
-EXPORT_SYMBOL(next_zone);
+EXPORT_UNUSED_SYMBOL(next_zone); /* June 2006 */
diff --git a/mm/nommu.c b/mm/nommu.c
index 5151c44a8257..c576df71e3bb 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1070,6 +1070,7 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long from,
vma->vm_start = vma->vm_pgoff << PAGE_SHIFT;
return 0;
}
+EXPORT_SYMBOL(remap_pfn_range);
void swap_unplug_io_fn(struct backing_dev_info *bdi, struct page *page)
{
@@ -1090,6 +1091,7 @@ void unmap_mapping_range(struct address_space *mapping,
int even_cows)
{
}
+EXPORT_SYMBOL(unmap_mapping_range);
/*
* Check that a process has enough memory to allocate a new virtual
diff --git a/mm/slab.c b/mm/slab.c
index 85c2e03098a7..21ba06035700 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -674,6 +674,37 @@ static struct kmem_cache cache_cache = {
#endif
};
+#ifdef CONFIG_LOCKDEP
+
+/*
+ * Slab sometimes uses the kmalloc slabs to store the slab headers
+ * for other slabs "off slab".
+ * The locking for this is tricky in that it nests within the locks
+ * of all other slabs in a few places; to deal with this special
+ * locking we put on-slab caches into a separate lock-class.
+ */
+static struct lock_class_key on_slab_key;
+
+static inline void init_lock_keys(struct cache_sizes *s)
+{
+ int q;
+
+ for (q = 0; q < MAX_NUMNODES; q++) {
+ if (!s->cs_cachep->nodelists[q] || OFF_SLAB(s->cs_cachep))
+ continue;
+ lockdep_set_class(&s->cs_cachep->nodelists[q]->list_lock,
+ &on_slab_key);
+ }
+}
+
+#else
+static inline void init_lock_keys(struct cache_sizes *s)
+{
+}
+#endif
+
+
+
/* Guard access to the cache-chain. */
static DEFINE_MUTEX(cache_chain_mutex);
static struct list_head cache_chain;
@@ -1021,8 +1052,7 @@ static void drain_alien_cache(struct kmem_cache *cachep,
}
}
-static inline int cache_free_alien(struct kmem_cache *cachep, void *objp,
- int nesting)
+static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
{
struct slab *slabp = virt_to_slab(objp);
int nodeid = slabp->nodeid;
@@ -1040,7 +1070,7 @@ static inline int cache_free_alien(struct kmem_cache *cachep, void *objp,
STATS_INC_NODEFREES(cachep);
if (l3->alien && l3->alien[nodeid]) {
alien = l3->alien[nodeid];
- spin_lock_nested(&alien->lock, nesting);
+ spin_lock(&alien->lock);
if (unlikely(alien->avail == alien->limit)) {
STATS_INC_ACOVERFLOW(cachep);
__drain_alien_cache(cachep, alien, nodeid);
@@ -1069,15 +1099,14 @@ static inline void free_alien_cache(struct array_cache **ac_ptr)
{
}
-static inline int cache_free_alien(struct kmem_cache *cachep, void *objp,
- int nesting)
+static inline int cache_free_alien(struct kmem_cache *cachep, void *objp)
{
return 0;
}
#endif
-static int __devinit cpuup_callback(struct notifier_block *nfb,
+static int __cpuinit cpuup_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
long cpu = (long)hcpu;
@@ -1393,6 +1422,7 @@ void __init kmem_cache_init(void)
ARCH_KMALLOC_FLAGS|SLAB_PANIC,
NULL, NULL);
}
+ init_lock_keys(sizes);
sizes->cs_dmacachep = kmem_cache_create(names->name_dma,
sizes->cs_size,
@@ -1760,8 +1790,6 @@ static void slab_destroy_objs(struct kmem_cache *cachep, struct slab *slabp)
}
#endif
-static void __cache_free(struct kmem_cache *cachep, void *objp, int nesting);
-
/**
* slab_destroy - destroy and release all objects in a slab
* @cachep: cache pointer being destroyed
@@ -1785,17 +1813,8 @@ static void slab_destroy(struct kmem_cache *cachep, struct slab *slabp)
call_rcu(&slab_rcu->head, kmem_rcu_free);
} else {
kmem_freepages(cachep, addr);
- if (OFF_SLAB(cachep)) {
- unsigned long flags;
-
- /*
- * lockdep: we may nest inside an already held
- * ac->lock, so pass in a nesting flag:
- */
- local_irq_save(flags);
- __cache_free(cachep->slabp_cache, slabp, 1);
- local_irq_restore(flags);
- }
+ if (OFF_SLAB(cachep))
+ kmem_cache_free(cachep->slabp_cache, slabp);
}
}
@@ -3100,16 +3119,7 @@ static void free_block(struct kmem_cache *cachep, void **objpp, int nr_objects,
if (slabp->inuse == 0) {
if (l3->free_objects > l3->free_limit) {
l3->free_objects -= cachep->num;
- /*
- * It is safe to drop the lock. The slab is
- * no longer linked to the cache. cachep
- * cannot disappear - we are using it and
- * all destruction of caches must be
- * serialized properly by the user.
- */
- spin_unlock(&l3->list_lock);
slab_destroy(cachep, slabp);
- spin_lock(&l3->list_lock);
} else {
list_add(&slabp->list, &l3->slabs_free);
}
@@ -3135,7 +3145,7 @@ static void cache_flusharray(struct kmem_cache *cachep, struct array_cache *ac)
#endif
check_irq_off();
l3 = cachep->nodelists[node];
- spin_lock_nested(&l3->list_lock, SINGLE_DEPTH_NESTING);
+ spin_lock(&l3->list_lock);
if (l3->shared) {
struct array_cache *shared_array = l3->shared;
int max = shared_array->limit - shared_array->avail;
@@ -3178,14 +3188,14 @@ free_done:
* Release an obj back to its cache. If the obj has a constructed state, it must
* be in this state _before_ it is released. Called with disabled ints.
*/
-static void __cache_free(struct kmem_cache *cachep, void *objp, int nesting)
+static inline void __cache_free(struct kmem_cache *cachep, void *objp)
{
struct array_cache *ac = cpu_cache_get(cachep);
check_irq_off();
objp = cache_free_debugcheck(cachep, objp, __builtin_return_address(0));
- if (cache_free_alien(cachep, objp, nesting))
+ if (cache_free_alien(cachep, objp))
return;
if (likely(ac->avail < ac->limit)) {
@@ -3214,7 +3224,7 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags)
EXPORT_SYMBOL(kmem_cache_alloc);
/**
- * kmem_cache_alloc - Allocate an object. The memory is set to zero.
+ * kmem_cache_zalloc - Allocate an object. The memory is set to zero.
* @cache: The cache to allocate from.
* @flags: See kmalloc().
*
@@ -3424,7 +3434,7 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp)
BUG_ON(virt_to_cache(objp) != cachep);
local_irq_save(flags);
- __cache_free(cachep, objp, 0);
+ __cache_free(cachep, objp);
local_irq_restore(flags);
}
EXPORT_SYMBOL(kmem_cache_free);
@@ -3449,7 +3459,7 @@ void kfree(const void *objp)
kfree_debugcheck(objp);
c = virt_to_cache(objp);
debug_check_no_locks_freed(objp, obj_size(c));
- __cache_free(c, (void *)objp, 0);
+ __cache_free(c, (void *)objp);
local_irq_restore(flags);
}
EXPORT_SYMBOL(kfree);
diff --git a/mm/swap.c b/mm/swap.c
index 8fd095c4ae51..687686a61f7c 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -54,6 +54,26 @@ void put_page(struct page *page)
}
EXPORT_SYMBOL(put_page);
+/**
+ * put_pages_list(): release a list of pages
+ *
+ * Release a list of pages which are strung together on page.lru. Currently
+ * used by read_cache_pages() and related error recovery code.
+ *
+ * @pages: list of pages threaded on page->lru
+ */
+void put_pages_list(struct list_head *pages)
+{
+ while (!list_empty(pages)) {
+ struct page *victim;
+
+ victim = list_entry(pages->prev, struct page, lru);
+ list_del(&victim->lru);
+ page_cache_release(victim);
+ }
+}
+EXPORT_SYMBOL(put_pages_list);
+
/*
* Writeback is about to end against a page which has been marked for immediate
* reclaim. If it still appears to be reclaimable, move it to the tail of the
diff --git a/mm/swapfile.c b/mm/swapfile.c
index e70d6c6d6fee..f1f5ec783781 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -442,11 +442,12 @@ int swap_type_of(dev_t device)
if (!(swap_info[i].flags & SWP_WRITEOK))
continue;
+
if (!device) {
spin_unlock(&swap_lock);
return i;
}
- inode = swap_info->swap_file->f_dentry->d_inode;
+ inode = swap_info[i].swap_file->f_dentry->d_inode;
if (S_ISBLK(inode->i_mode) &&
device == MKDEV(imajor(inode), iminor(inode))) {
spin_unlock(&swap_lock);
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 7b450798b458..266162d2ba28 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -340,7 +340,7 @@ void __vunmap(void *addr, int deallocate_pages)
__free_page(area->pages[i]);
}
- if (area->nr_pages > PAGE_SIZE/sizeof(struct page *))
+ if (area->flags & VM_VPAGES)
vfree(area->pages);
else
kfree(area->pages);
@@ -427,9 +427,10 @@ void *__vmalloc_area_node(struct vm_struct *area, gfp_t gfp_mask,
area->nr_pages = nr_pages;
/* Please note that the recursion is strictly bounded. */
- if (array_size > PAGE_SIZE)
+ if (array_size > PAGE_SIZE) {
pages = __vmalloc_node(array_size, gfp_mask, PAGE_KERNEL, node);
- else
+ area->flags |= VM_VPAGES;
+ } else
pages = kmalloc_node(array_size, (gfp_mask & ~__GFP_HIGHMEM), node);
area->pages = pages;
if (!area->pages) {
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 73b83d67bab6..dfdf24133901 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -81,6 +81,7 @@ void all_vm_events(unsigned long *ret)
{
sum_vm_events(ret, &cpu_online_map);
}
+EXPORT_SYMBOL_GPL(all_vm_events);
#ifdef CONFIG_HOTPLUG
/*
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.