Merge branch 'akpm' (Andrew's patch-bomb)
Merge misc fixes from Andrew Morton.
* emailed from Andrew Morton <akpm@linux-foundation.org>: (8 patches)
MAINTAINERS: add maintainer for LED subsystem
mm: nobootmem: fix sign extend problem in __free_pages_memory()
drivers/leds: correct __devexit annotations
memcg: free spare array to avoid memory leak
namespaces, pid_ns: fix leakage on fork() failure
hugetlb: prevent BUG_ON in hugetlb_fault() -> hugetlb_cow()
mm: fix division by 0 in percpu_pagelist_fraction()
proc/pid/pagemap: correctly report non-present ptes and holes between vmas
diff --git a/MAINTAINERS b/MAINTAINERS
index 7071633..de4e280 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4034,6 +4034,7 @@
F: drivers/scsi/53c700*
LED SUBSYSTEM
+M: Bryan Wu <bryan.wu@canonical.com>
M: Richard Purdie <rpurdie@rpsys.net>
S: Maintained
F: drivers/leds/
diff --git a/drivers/leds/leds-netxbig.c b/drivers/leds/leds-netxbig.c
index d8433f2..73973fd 100644
--- a/drivers/leds/leds-netxbig.c
+++ b/drivers/leds/leds-netxbig.c
@@ -112,7 +112,7 @@
return err;
}
-static void __devexit gpio_ext_free(struct netxbig_gpio_ext *gpio_ext)
+static void gpio_ext_free(struct netxbig_gpio_ext *gpio_ext)
{
int i;
@@ -294,7 +294,7 @@
static DEVICE_ATTR(sata, 0644, netxbig_led_sata_show, netxbig_led_sata_store);
-static void __devexit delete_netxbig_led(struct netxbig_led_data *led_dat)
+static void delete_netxbig_led(struct netxbig_led_data *led_dat)
{
if (led_dat->mode_val[NETXBIG_LED_SATA] != NETXBIG_LED_INVALID_MODE)
device_remove_file(led_dat->cdev.dev, &dev_attr_sata);
diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c
index 2f0a144..01cf89e 100644
--- a/drivers/leds/leds-ns2.c
+++ b/drivers/leds/leds-ns2.c
@@ -255,7 +255,7 @@
return ret;
}
-static void __devexit delete_ns2_led(struct ns2_led_data *led_dat)
+static void delete_ns2_led(struct ns2_led_data *led_dat)
{
device_remove_file(led_dat->cdev.dev, &dev_attr_sata);
led_classdev_unregister(&led_dat->cdev);
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 2d60492..1030a71 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -747,6 +747,8 @@
else if (pte_present(pte))
*pme = make_pme(PM_PFRAME(pte_pfn(pte))
| PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT);
+ else
+ *pme = make_pme(PM_NOT_PRESENT);
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -761,6 +763,8 @@
if (pmd_present(pmd))
*pme = make_pme(PM_PFRAME(pmd_pfn(pmd) + offset)
| PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT);
+ else
+ *pme = make_pme(PM_NOT_PRESENT);
}
#else
static inline void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme,
@@ -801,8 +805,10 @@
/* check to see if we've left 'vma' behind
* and need a new, higher one */
- if (vma && (addr >= vma->vm_end))
+ if (vma && (addr >= vma->vm_end)) {
vma = find_vma(walk->mm, addr);
+ pme = make_pme(PM_NOT_PRESENT);
+ }
/* check that 'vma' actually covers this address,
* and that it isn't a huge page vma */
@@ -830,6 +836,8 @@
if (pte_present(pte))
*pme = make_pme(PM_PFRAME(pte_pfn(pte) + offset)
| PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT);
+ else
+ *pme = make_pme(PM_NOT_PRESENT);
}
/* This function walks within one hugetlb entry in the single call */
@@ -839,7 +847,7 @@
{
struct pagemapread *pm = walk->private;
int err = 0;
- pagemap_entry_t pme = make_pme(PM_NOT_PRESENT);
+ pagemap_entry_t pme;
for (; addr != end; addr += PAGE_SIZE) {
int offset = (addr & ~hmask) >> PAGE_SHIFT;
diff --git a/kernel/fork.c b/kernel/fork.c
index b9372a0..687a15d5 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -47,6 +47,7 @@
#include <linux/audit.h>
#include <linux/memcontrol.h>
#include <linux/ftrace.h>
+#include <linux/proc_fs.h>
#include <linux/profile.h>
#include <linux/rmap.h>
#include <linux/ksm.h>
@@ -1464,6 +1465,8 @@
if (p->io_context)
exit_io_context(p);
bad_fork_cleanup_namespaces:
+ if (unlikely(clone_flags & CLONE_NEWPID))
+ pid_ns_release_proc(p->nsproxy->pid_ns);
exit_task_namespaces(p);
bad_fork_cleanup_mm:
if (p->mm)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 5a16423..ae8f708 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2498,7 +2498,6 @@
if (outside_reserve) {
BUG_ON(huge_pte_none(pte));
if (unmap_ref_private(mm, vma, old_page, address)) {
- BUG_ON(page_count(old_page) != 1);
BUG_ON(huge_pte_none(pte));
spin_lock(&mm->page_table_lock);
ptep = huge_pte_offset(mm, address & huge_page_mask(h));
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 31ab9c3..b659260 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4507,6 +4507,12 @@
swap_buffers:
/* Swap primary and spare array */
thresholds->spare = thresholds->primary;
+ /* If all events are unregistered, free the spare array */
+ if (!new) {
+ kfree(thresholds->spare);
+ thresholds->spare = NULL;
+ }
+
rcu_assign_pointer(thresholds->primary, new);
/* To be sure that nobody uses thresholds */
diff --git a/mm/nobootmem.c b/mm/nobootmem.c
index e53bb8a..1983fb1 100644
--- a/mm/nobootmem.c
+++ b/mm/nobootmem.c
@@ -82,8 +82,7 @@
static void __init __free_pages_memory(unsigned long start, unsigned long end)
{
- int i;
- unsigned long start_aligned, end_aligned;
+ unsigned long i, start_aligned, end_aligned;
int order = ilog2(BITS_PER_LONG);
start_aligned = (start + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index a712fb9..b21b3db 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -105,7 +105,7 @@
*/
unsigned long dirty_balance_reserve __read_mostly;
-int percpu_pagelist_fraction;
+int percpu_pagelist_fraction = 8;
gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK;
#ifdef CONFIG_PM_SLEEP
@@ -5203,7 +5203,7 @@
int ret;
ret = proc_dointvec_minmax(table, write, buffer, length, ppos);
- if (!write || (ret == -EINVAL))
+ if (!write || (ret < 0))
return ret;
for_each_populated_zone(zone) {
for_each_possible_cpu(cpu) {