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-rw-r--r--mm/Kconfig4
-rw-r--r--mm/allocpercpu.c2
-rw-r--r--mm/filemap.c3
-rw-r--r--mm/memory.c16
-rw-r--r--mm/mempolicy.c6
-rw-r--r--mm/migrate.c2
-rw-r--r--mm/mprotect.c10
-rw-r--r--mm/page-writeback.c13
-rw-r--r--mm/page_alloc.c95
-rw-r--r--mm/slab.c14
-rw-r--r--mm/slub.c26
-rw-r--r--mm/sparse-vmemmap.c2
12 files changed, 137 insertions, 56 deletions
diff --git a/mm/Kconfig b/mm/Kconfig
index 3aa819d628c..c4de85285bb 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -129,7 +129,7 @@ config MEMORY_HOTPLUG
bool "Allow for memory hot-add"
depends on SPARSEMEM || X86_64_ACPI_NUMA
depends on HOTPLUG && !HIBERNATION && ARCH_ENABLE_MEMORY_HOTPLUG
- depends on (IA64 || X86 || PPC64 || SUPERH)
+ depends on (IA64 || X86 || PPC64 || SUPERH || S390)
comment "Memory hotplug is currently incompatible with Software Suspend"
depends on SPARSEMEM && HOTPLUG && HIBERNATION
@@ -199,7 +199,7 @@ config BOUNCE
config NR_QUICK
int
depends on QUICKLIST
- default "2" if SUPERH
+ default "2" if SUPERH || AVR32
default "1"
config VIRT_TO_BUS
diff --git a/mm/allocpercpu.c b/mm/allocpercpu.c
index f4026bae6ee..05f2b4009cc 100644
--- a/mm/allocpercpu.c
+++ b/mm/allocpercpu.c
@@ -1,7 +1,7 @@
/*
* linux/mm/allocpercpu.c
*
- * Separated from slab.c August 11, 2006 Christoph Lameter <clameter@sgi.com>
+ * Separated from slab.c August 11, 2006 Christoph Lameter
*/
#include <linux/mm.h>
#include <linux/module.h>
diff --git a/mm/filemap.c b/mm/filemap.c
index 1e6a7d34874..65d9d9e2b75 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -236,11 +236,12 @@ int filemap_fdatawrite(struct address_space *mapping)
}
EXPORT_SYMBOL(filemap_fdatawrite);
-static int filemap_fdatawrite_range(struct address_space *mapping, loff_t start,
+int filemap_fdatawrite_range(struct address_space *mapping, loff_t start,
loff_t end)
{
return __filemap_fdatawrite_range(mapping, start, end, WB_SYNC_ALL);
}
+EXPORT_SYMBOL(filemap_fdatawrite_range);
/**
* filemap_flush - mostly a non-blocking flush
diff --git a/mm/memory.c b/mm/memory.c
index d14b251a25a..2302d228fe0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1151,7 +1151,7 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
* be processed until returning to user space.
*/
if (unlikely(test_tsk_thread_flag(tsk, TIF_MEMDIE)))
- return -ENOMEM;
+ return i ? i : -ENOMEM;
if (write)
foll_flags |= FOLL_WRITE;
@@ -1697,8 +1697,19 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
struct page *dirty_page = NULL;
old_page = vm_normal_page(vma, address, orig_pte);
- if (!old_page)
+ if (!old_page) {
+ /*
+ * VM_MIXEDMAP !pfn_valid() case
+ *
+ * We should not cow pages in a shared writeable mapping.
+ * Just mark the pages writable as we can't do any dirty
+ * accounting on raw pfn maps.
+ */
+ if ((vma->vm_flags & (VM_WRITE|VM_SHARED)) ==
+ (VM_WRITE|VM_SHARED))
+ goto reuse;
goto gotten;
+ }
/*
* Take out anonymous pages first, anonymous shared vmas are
@@ -1751,6 +1762,7 @@ static int do_wp_page(struct mm_struct *mm, struct vm_area_struct *vma,
}
if (reuse) {
+reuse:
flush_cache_page(vma, address, pte_pfn(orig_pte));
entry = pte_mkyoung(orig_pte);
entry = maybe_mkwrite(pte_mkdirty(entry), vma);
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index a37a5034f63..c94e58b192c 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -729,7 +729,11 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask,
} else {
*policy = pol == &default_policy ? MPOL_DEFAULT :
pol->mode;
- *policy |= pol->flags;
+ /*
+ * Internal mempolicy flags must be masked off before exposing
+ * the policy to userspace.
+ */
+ *policy |= (pol->flags & MPOL_MODE_FLAGS);
}
if (vma) {
diff --git a/mm/migrate.c b/mm/migrate.c
index 112bcaeaa10..55bd355d170 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -9,7 +9,7 @@
* IWAMOTO Toshihiro <iwamoto@valinux.co.jp>
* Hirokazu Takahashi <taka@valinux.co.jp>
* Dave Hansen <haveblue@us.ibm.com>
- * Christoph Lameter <clameter@sgi.com>
+ * Christoph Lameter
*/
#include <linux/migrate.h>
diff --git a/mm/mprotect.c b/mm/mprotect.c
index a5bf31c2737..acfe7c8d72f 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -47,19 +47,17 @@ static void change_pte_range(struct mm_struct *mm, pmd_t *pmd,
if (pte_present(oldpte)) {
pte_t ptent;
- /* Avoid an SMP race with hardware updated dirty/clean
- * bits by wiping the pte and then setting the new pte
- * into place.
- */
- ptent = ptep_get_and_clear(mm, addr, pte);
+ ptent = ptep_modify_prot_start(mm, addr, pte);
ptent = pte_modify(ptent, newprot);
+
/*
* Avoid taking write faults for pages we know to be
* dirty.
*/
if (dirty_accountable && pte_dirty(ptent))
ptent = pte_mkwrite(ptent);
- set_pte_at(mm, addr, pte, ptent);
+
+ ptep_modify_prot_commit(mm, addr, pte, ptent);
#ifdef CONFIG_MIGRATION
} else if (!pte_file(oldpte)) {
swp_entry_t entry = pte_to_swp_entry(oldpte);
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 789b6adbef3..94c6d8988ab 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -126,8 +126,6 @@ static void background_writeout(unsigned long _min_pages);
static struct prop_descriptor vm_completions;
static struct prop_descriptor vm_dirties;
-static unsigned long determine_dirtyable_memory(void);
-
/*
* couple the period to the dirty_ratio:
*
@@ -347,7 +345,13 @@ static unsigned long highmem_dirtyable_memory(unsigned long total)
#endif
}
-static unsigned long determine_dirtyable_memory(void)
+/**
+ * determine_dirtyable_memory - amount of memory that may be used
+ *
+ * Returns the numebr of pages that can currently be freed and used
+ * by the kernel for direct mappings.
+ */
+unsigned long determine_dirtyable_memory(void)
{
unsigned long x;
@@ -956,6 +960,9 @@ retry:
}
if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
mapping->writeback_index = index;
+
+ if (wbc->range_cont)
+ wbc->range_start = index << PAGE_CACHE_SHIFT;
return ret;
}
EXPORT_SYMBOL(write_cache_pages);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 53242344a77..79ac4afc908 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2328,7 +2328,6 @@ static void build_zonelists(pg_data_t *pgdat)
static void build_zonelist_cache(pg_data_t *pgdat)
{
pgdat->node_zonelists[0].zlcache_ptr = NULL;
- pgdat->node_zonelists[1].zlcache_ptr = NULL;
}
#endif /* CONFIG_NUMA */
@@ -2930,6 +2929,18 @@ void __init free_bootmem_with_active_regions(int nid,
}
}
+void __init work_with_active_regions(int nid, work_fn_t work_fn, void *data)
+{
+ int i;
+ int ret;
+
+ for_each_active_range_index_in_nid(i, nid) {
+ ret = work_fn(early_node_map[i].start_pfn,
+ early_node_map[i].end_pfn, data);
+ if (ret)
+ break;
+ }
+}
/**
* sparse_memory_present_with_active_regions - Call memory_present for each active range
* @nid: The node to call memory_present for. If MAX_NUMNODES, all nodes will be used.
@@ -3462,6 +3473,11 @@ void __paginginit free_area_init_node(int nid, struct pglist_data *pgdat,
calculate_node_totalpages(pgdat, zones_size, zholes_size);
alloc_node_mem_map(pgdat);
+#ifdef CONFIG_FLAT_NODE_MEM_MAP
+ printk(KERN_DEBUG "free_area_init_node: node %d, pgdat %08lx, node_mem_map %08lx\n",
+ nid, (unsigned long)pgdat,
+ (unsigned long)pgdat->node_mem_map);
+#endif
free_area_init_core(pgdat, zones_size, zholes_size);
}
@@ -3504,7 +3520,7 @@ void __init add_active_range(unsigned int nid, unsigned long start_pfn,
{
int i;
- printk(KERN_DEBUG "Entering add_active_range(%d, %lu, %lu) "
+ printk(KERN_DEBUG "Entering add_active_range(%d, %#lx, %#lx) "
"%d entries of %d used\n",
nid, start_pfn, end_pfn,
nr_nodemap_entries, MAX_ACTIVE_REGIONS);
@@ -3548,27 +3564,68 @@ void __init add_active_range(unsigned int nid, unsigned long start_pfn,
}
/**
- * shrink_active_range - Shrink an existing registered range of PFNs
+ * remove_active_range - Shrink an existing registered range of PFNs
* @nid: The node id the range is on that should be shrunk
- * @old_end_pfn: The old end PFN of the range
- * @new_end_pfn: The new PFN of the range
+ * @start_pfn: The new PFN of the range
+ * @end_pfn: The new PFN of the range
*
* i386 with NUMA use alloc_remap() to store a node_mem_map on a local node.
- * The map is kept at the end physical page range that has already been
- * registered with add_active_range(). This function allows an arch to shrink
- * an existing registered range.
+ * The map is kept near the end physical page range that has already been
+ * registered. This function allows an arch to shrink an existing registered
+ * range.
*/
-void __init shrink_active_range(unsigned int nid, unsigned long old_end_pfn,
- unsigned long new_end_pfn)
+void __init remove_active_range(unsigned int nid, unsigned long start_pfn,
+ unsigned long end_pfn)
{
- int i;
+ int i, j;
+ int removed = 0;
+
+ printk(KERN_DEBUG "remove_active_range (%d, %lu, %lu)\n",
+ nid, start_pfn, end_pfn);
/* Find the old active region end and shrink */
- for_each_active_range_index_in_nid(i, nid)
- if (early_node_map[i].end_pfn == old_end_pfn) {
- early_node_map[i].end_pfn = new_end_pfn;
- break;
+ for_each_active_range_index_in_nid(i, nid) {
+ if (early_node_map[i].start_pfn >= start_pfn &&
+ early_node_map[i].end_pfn <= end_pfn) {
+ /* clear it */
+ early_node_map[i].start_pfn = 0;
+ early_node_map[i].end_pfn = 0;
+ removed = 1;
+ continue;
+ }
+ if (early_node_map[i].start_pfn < start_pfn &&
+ early_node_map[i].end_pfn > start_pfn) {
+ unsigned long temp_end_pfn = early_node_map[i].end_pfn;
+ early_node_map[i].end_pfn = start_pfn;
+ if (temp_end_pfn > end_pfn)
+ add_active_range(nid, end_pfn, temp_end_pfn);
+ continue;
}
+ if (early_node_map[i].start_pfn >= start_pfn &&
+ early_node_map[i].end_pfn > end_pfn &&
+ early_node_map[i].start_pfn < end_pfn) {
+ early_node_map[i].start_pfn = end_pfn;
+ continue;
+ }
+ }
+
+ if (!removed)
+ return;
+
+ /* remove the blank ones */
+ for (i = nr_nodemap_entries - 1; i > 0; i--) {
+ if (early_node_map[i].nid != nid)
+ continue;
+ if (early_node_map[i].end_pfn)
+ continue;
+ /* we found it, get rid of it */
+ for (j = i; j < nr_nodemap_entries - 1; j++)
+ memcpy(&early_node_map[j], &early_node_map[j+1],
+ sizeof(early_node_map[j]));
+ j = nr_nodemap_entries - 1;
+ memset(&early_node_map[j], 0, sizeof(early_node_map[j]));
+ nr_nodemap_entries--;
+ }
}
/**
@@ -3612,7 +3669,7 @@ static void __init sort_node_map(void)
}
/* Find the lowest pfn for a node */
-unsigned long __init find_min_pfn_for_node(unsigned long nid)
+unsigned long __init find_min_pfn_for_node(int nid)
{
int i;
unsigned long min_pfn = ULONG_MAX;
@@ -3623,7 +3680,7 @@ unsigned long __init find_min_pfn_for_node(unsigned long nid)
if (min_pfn == ULONG_MAX) {
printk(KERN_WARNING
- "Could not find start_pfn for node %lu\n", nid);
+ "Could not find start_pfn for node %d\n", nid);
return 0;
}
@@ -3879,7 +3936,7 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
for (i = 0; i < MAX_NR_ZONES; i++) {
if (i == ZONE_MOVABLE)
continue;
- printk(" %-8s %8lu -> %8lu\n",
+ printk(" %-8s %0#10lx -> %0#10lx\n",
zone_names[i],
arch_zone_lowest_possible_pfn[i],
arch_zone_highest_possible_pfn[i]);
@@ -3895,7 +3952,7 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn)
/* Print out the early_node_map[] */
printk("early_node_map[%d] active PFN ranges\n", nr_nodemap_entries);
for (i = 0; i < nr_nodemap_entries; i++)
- printk(" %3d: %8lu -> %8lu\n", early_node_map[i].nid,
+ printk(" %3d: %0#10lx -> %0#10lx\n", early_node_map[i].nid,
early_node_map[i].start_pfn,
early_node_map[i].end_pfn);
diff --git a/mm/slab.c b/mm/slab.c
index 0772abb412b..052e7d64537 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1901,15 +1901,7 @@ static void check_poison_obj(struct kmem_cache *cachep, void *objp)
#endif
#if DEBUG
-/**
- * slab_destroy_objs - destroy a slab and its objects
- * @cachep: cache pointer being destroyed
- * @slabp: slab pointer being destroyed
- *
- * Call the registered destructor for each object in a slab that is being
- * destroyed.
- */
-static void slab_destroy_objs(struct kmem_cache *cachep, struct slab *slabp)
+static void slab_destroy_debugcheck(struct kmem_cache *cachep, struct slab *slabp)
{
int i;
for (i = 0; i < cachep->num; i++) {
@@ -1938,7 +1930,7 @@ static void slab_destroy_objs(struct kmem_cache *cachep, struct slab *slabp)
}
}
#else
-static void slab_destroy_objs(struct kmem_cache *cachep, struct slab *slabp)
+static void slab_destroy_debugcheck(struct kmem_cache *cachep, struct slab *slabp)
{
}
#endif
@@ -1956,7 +1948,7 @@ static void slab_destroy(struct kmem_cache *cachep, struct slab *slabp)
{
void *addr = slabp->s_mem - slabp->colouroff;
- slab_destroy_objs(cachep, slabp);
+ slab_destroy_debugcheck(cachep, slabp);
if (unlikely(cachep->flags & SLAB_DESTROY_BY_RCU)) {
struct slab_rcu *slab_rcu;
diff --git a/mm/slub.c b/mm/slub.c
index 44715eb70c0..35ab38a94b4 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5,7 +5,7 @@
* The allocator synchronizes using per slab locks and only
* uses a centralized lock to manage a pool of partial slabs.
*
- * (C) 2007 SGI, Christoph Lameter <clameter@sgi.com>
+ * (C) 2007 SGI, Christoph Lameter
*/
#include <linux/mm.h>
@@ -411,7 +411,7 @@ static void set_track(struct kmem_cache *s, void *object,
if (addr) {
p->addr = addr;
p->cpu = smp_processor_id();
- p->pid = current ? current->pid : -1;
+ p->pid = current->pid;
p->when = jiffies;
} else
memset(p, 0, sizeof(struct track));
@@ -431,9 +431,8 @@ static void print_track(const char *s, struct track *t)
if (!t->addr)
return;
- printk(KERN_ERR "INFO: %s in ", s);
- __print_symbol("%s", (unsigned long)t->addr);
- printk(" age=%lu cpu=%u pid=%d\n", jiffies - t->when, t->cpu, t->pid);
+ printk(KERN_ERR "INFO: %s in %pS age=%lu cpu=%u pid=%d\n",
+ s, t->addr, jiffies - t->when, t->cpu, t->pid);
}
static void print_tracking(struct kmem_cache *s, void *object)
@@ -1628,9 +1627,11 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
void **object;
struct kmem_cache_cpu *c;
unsigned long flags;
+ unsigned int objsize;
local_irq_save(flags);
c = get_cpu_slab(s, smp_processor_id());
+ objsize = c->objsize;
if (unlikely(!c->freelist || !node_match(c, node)))
object = __slab_alloc(s, gfpflags, node, addr, c);
@@ -1643,7 +1644,7 @@ static __always_inline void *slab_alloc(struct kmem_cache *s,
local_irq_restore(flags);
if (unlikely((gfpflags & __GFP_ZERO) && object))
- memset(object, 0, c->objsize);
+ memset(object, 0, objsize);
return object;
}
@@ -2765,6 +2766,7 @@ void kfree(const void *x)
page = virt_to_head_page(x);
if (unlikely(!PageSlab(page))) {
+ BUG_ON(!PageCompound(page));
put_page(page);
return;
}
@@ -2995,8 +2997,6 @@ void __init kmem_cache_init(void)
create_kmalloc_cache(&kmalloc_caches[1],
"kmalloc-96", 96, GFP_KERNEL);
caches++;
- }
- if (KMALLOC_MIN_SIZE <= 128) {
create_kmalloc_cache(&kmalloc_caches[2],
"kmalloc-192", 192, GFP_KERNEL);
caches++;
@@ -3026,6 +3026,16 @@ void __init kmem_cache_init(void)
for (i = 8; i < KMALLOC_MIN_SIZE; i += 8)
size_index[(i - 1) / 8] = KMALLOC_SHIFT_LOW;
+ if (KMALLOC_MIN_SIZE == 128) {
+ /*
+ * The 192 byte sized cache is not used if the alignment
+ * is 128 byte. Redirect kmalloc to use the 256 byte cache
+ * instead.
+ */
+ for (i = 128 + 8; i <= 192; i += 8)
+ size_index[(i - 1) / 8] = 8;
+ }
+
slab_state = UP;
/* Provide the correct kmalloc names now that the caches are up */
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 99c4f36eb8a..a91b5f8fcaf 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -1,7 +1,7 @@
/*
* Virtual Memory Map support
*
- * (C) 2007 sgi. Christoph Lameter <clameter@sgi.com>.
+ * (C) 2007 sgi. Christoph Lameter.
*
* Virtual memory maps allow VM primitives pfn_to_page, page_to_pfn,
* virt_to_page, page_address() to be implemented as a base offset
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 13:34:28 +0000