Merge branch 'akpm' (patches from Andrew Morton)

Merge misc fixes from Andrew Morton.

* emailed patches from Andrew Morton akpm@linux-foundation.org>:
  MAINTAINERS: change mailing list address for Altera UART drivers
  Makefile: fix build with make 3.80 again
  MAINTAINERS: update L: misuses
  Makefile: fix extra parenthesis typo when CC_STACKPROTECTOR_REGULAR is enabled
  ipc,mqueue: remove limits for the amount of system-wide queues
  memcg: change oom_info_lock to mutex
  mm, thp: fix infinite loop on memcg OOM
  drivers/fmc/fmc-write-eeprom.c: fix decimal permissions
  drivers/iommu/omap-iommu-debug.c: fix decimal permissions
  mm, hwpoison: release page on PageHWPoison() in __do_fault()

10 files changed, 40 insertions, 38 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 85b3dd8008b7..df8869d49c3f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -538,7 +538,7 @@ F:	arch/alpha/
 ALTERA UART/JTAG UART SERIAL DRIVERS
 M:      Tobias Klauser <tklauser@distanz.ch>
 L:      linux-serial@vger.kernel.org
-L:      nios2-dev@sopc.et.ntust.edu.tw (moderated for non-subscribers)
+L:      nios2-dev@lists.rocketboards.org (moderated for non-subscribers)
 S:      Maintained
 F:      drivers/tty/serial/altera_uart.c
 F:      drivers/tty/serial/altera_jtaguart.c
@@ -2611,9 +2611,9 @@ DC395x SCSI driver
 M:      Oliver Neukum <oliver@neukum.org>
 M:      Ali Akcaagac <aliakc@web.de>
 M:      Jamie Lenehan <lenehan@twibble.org>
-W:      http://twibble.org/dist/dc395x/
 L:      dc395x@twibble.org
-L:      http://lists.twibble.org/mailman/listinfo/dc395x/
+W:      http://twibble.org/dist/dc395x/
+W:      http://lists.twibble.org/mailman/listinfo/dc395x/
 S:      Maintained
 F:      Documentation/scsi/dc395x.txt
 F:      drivers/scsi/dc395x.*
@@ -8443,8 +8443,8 @@ TARGET SUBSYSTEM
 M:      Nicholas A. Bellinger <nab@linux-iscsi.org>
 L:      linux-scsi@vger.kernel.org
 L:      target-devel@vger.kernel.org
-L:      http://groups.google.com/group/linux-iscsi-target-dev
 W:      http://www.linux-iscsi.org
+W:      http://groups.google.com/group/linux-iscsi-target-dev
 T:      git git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending.git master
 S:      Supported
 F:      drivers/target/
diff --git a/Makefile b/Makefile
index 831b36a6b0a1..81f1bf390310 100644
--- a/Makefile
+++ b/Makefile
@@ -605,10 +605,11 @@ endif
 ifdef CONFIG_CC_STACKPROTECTOR_REGULAR
   stackp-flag := -fstack-protector
   ifeq ($(call cc-option, $(stackp-flag)),)
-    $(warning Cannot use CONFIG_CC_STACKPROTECTOR: \
-              -fstack-protector not supported by compiler))
+    $(warning Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: \
+             -fstack-protector not supported by compiler)
   endif
-else ifdef CONFIG_CC_STACKPROTECTOR_STRONG
+else
+ifdef CONFIG_CC_STACKPROTECTOR_STRONG
   stackp-flag := -fstack-protector-strong
   ifeq ($(call cc-option, $(stackp-flag)),)
     $(warning Cannot use CONFIG_CC_STACKPROTECTOR_STRONG: \
@@ -618,6 +619,7 @@ else
   # Force off for distro compilers that enable stack protector by default.
   stackp-flag := $(call cc-option, -fno-stack-protector)
 endif
+endif
 KBUILD_CFLAGS += $(stackp-flag)
 
 # This warning generated too much noise in a regular build.
diff --git a/drivers/fmc/fmc-write-eeprom.c b/drivers/fmc/fmc-write-eeprom.c
index ee5b47904130..9bb2cbd5c9f2 100644
--- a/drivers/fmc/fmc-write-eeprom.c
+++ b/drivers/fmc/fmc-write-eeprom.c
@@ -27,7 +27,7 @@ FMC_PARAM_BUSID(fwe_drv);
 /* The "file=" is like the generic "gateware=" used elsewhere */
 static char *fwe_file[FMC_MAX_CARDS];
 static int fwe_file_n;
-module_param_array_named(file, fwe_file, charp, &fwe_file_n, 444);
+module_param_array_named(file, fwe_file, charp, &fwe_file_n, 0444);
 
 static int fwe_run_tlv(struct fmc_device *fmc, const struct firmware *fw,
         int write)
diff --git a/drivers/iommu/omap-iommu-debug.c b/drivers/iommu/omap-iommu-debug.c
index d97fbe4fb9b1..80fffba7f12d 100644
--- a/drivers/iommu/omap-iommu-debug.c
+++ b/drivers/iommu/omap-iommu-debug.c
@@ -354,8 +354,8 @@ DEBUG_FOPS(mem);
                         return -ENOMEM;                                 \
         }
 
-#define DEBUG_ADD_FILE(name) __DEBUG_ADD_FILE(name, 600)
-#define DEBUG_ADD_FILE_RO(name) __DEBUG_ADD_FILE(name, 400)
+#define DEBUG_ADD_FILE(name) __DEBUG_ADD_FILE(name, 0600)
+#define DEBUG_ADD_FILE_RO(name) __DEBUG_ADD_FILE(name, 0400)
 
 static int iommu_debug_register(struct device *dev, void *data)
 {
diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index e7831d203737..35e7eca4e33b 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -118,9 +118,7 @@ extern int mq_init_ns(struct ipc_namespace *ns);
  *     the new maximum will handle anyone else.  I may have to revisit this
  *     in the future.
  */
-#define MIN_QUEUESMAX                   1
 #define DFLT_QUEUESMAX                256
-#define HARD_QUEUESMAX               1024
 #define MIN_MSGMAX                      1
 #define DFLT_MSG                       10U
 #define DFLT_MSGMAX                    10
diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
index 383d638340b8..5bb8bfe67149 100644
--- a/ipc/mq_sysctl.c
+++ b/ipc/mq_sysctl.c
@@ -22,6 +22,16 @@ static void *get_mq(ctl_table *table)
         return which;
 }
 
+static int proc_mq_dointvec(ctl_table *table, int write,
+                            void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+        struct ctl_table mq_table;
+        memcpy(&mq_table, table, sizeof(mq_table));
+        mq_table.data = get_mq(table);
+
+        return proc_dointvec(&mq_table, write, buffer, lenp, ppos);
+}
+
 static int proc_mq_dointvec_minmax(ctl_table *table, int write,
         void __user *buffer, size_t *lenp, loff_t *ppos)
 {
@@ -33,12 +43,10 @@ static int proc_mq_dointvec_minmax(ctl_table *table, int write,
                                         lenp, ppos);
 }
 #else
+#define proc_mq_dointvec NULL
 #define proc_mq_dointvec_minmax NULL
 #endif
 
-static int msg_queues_limit_min = MIN_QUEUESMAX;
-static int msg_queues_limit_max = HARD_QUEUESMAX;
-
 static int msg_max_limit_min = MIN_MSGMAX;
 static int msg_max_limit_max = HARD_MSGMAX;
 
@@ -51,9 +59,7 @@ static ctl_table mq_sysctls[] = {
                 .data           = &init_ipc_ns.mq_queues_max,
                 .maxlen         = sizeof(int),
                 .mode           = 0644,
-                .proc_handler   = proc_mq_dointvec_minmax,
-                .extra1         = &msg_queues_limit_min,
-                .extra2         = &msg_queues_limit_max,
+                .proc_handler   = proc_mq_dointvec,
         },
         {
                 .procname       = "msg_max",
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index ccf1f9fd263a..c3b31179122c 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -433,9 +433,9 @@ static int mqueue_create(struct inode *dir, struct dentry *dentry,
                 error = -EACCES;
                 goto out_unlock;
         }
-        if (ipc_ns->mq_queues_count >= HARD_QUEUESMAX ||
-            (ipc_ns->mq_queues_count >= ipc_ns->mq_queues_max &&
-             !capable(CAP_SYS_RESOURCE))) {
+
+        if (ipc_ns->mq_queues_count >= ipc_ns->mq_queues_max &&
+            !capable(CAP_SYS_RESOURCE)) {
                 error = -ENOSPC;
                 goto out_unlock;
         }
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index da23eb96779f..4df39b1bde91 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1166,8 +1166,10 @@ alloc:
                 } else {
                         ret = do_huge_pmd_wp_page_fallback(mm, vma, address,
                                         pmd, orig_pmd, page, haddr);
-                        if (ret & VM_FAULT_OOM)
+                        if (ret & VM_FAULT_OOM) {
                                 split_huge_page(page);
+                                ret |= VM_FAULT_FALLBACK;
+                        }
                         put_page(page);
                 }
                 count_vm_event(THP_FAULT_FALLBACK);
@@ -1179,9 +1181,10 @@ alloc:
                 if (page) {
                         split_huge_page(page);
                         put_page(page);
-                }
+                } else
+                        split_huge_page_pmd(vma, address, pmd);
+                ret |= VM_FAULT_FALLBACK;
                 count_vm_event(THP_FAULT_FALLBACK);
-                ret |= VM_FAULT_OOM;
                 goto out;
         }
 
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 53385cd4e6f0..ce7a8cc7b404 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1687,7 +1687,7 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
          * protects memcg_name and makes sure that parallel ooms do not
          * interleave
          */
-        static DEFINE_SPINLOCK(oom_info_lock);
+        static DEFINE_MUTEX(oom_info_lock);
         struct cgroup *task_cgrp;
         struct cgroup *mem_cgrp;
         static char memcg_name[PATH_MAX];
@@ -1698,7 +1698,7 @@ void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
         if (!p)
                 return;
 
-        spin_lock(&oom_info_lock);
+        mutex_lock(&oom_info_lock);
         rcu_read_lock();
 
         mem_cgrp = memcg->css.cgroup;
@@ -1767,7 +1767,7 @@ done:
 
                 pr_cont("\n");
         }
-        spin_unlock(&oom_info_lock);
+        mutex_unlock(&oom_info_lock);
 }
 
 /*
diff --git a/mm/memory.c b/mm/memory.c
index be6a0c0d4ae0..22dfa617bddb 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3348,6 +3348,7 @@ static int __do_fault(struct mm_struct *mm, struct vm_area_struct *vma,
                 if (ret & VM_FAULT_LOCKED)
                         unlock_page(vmf.page);
                 ret = VM_FAULT_HWPOISON;
+                page_cache_release(vmf.page);
                 goto uncharge_out;
         }
 
@@ -3703,7 +3704,6 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
         if (unlikely(is_vm_hugetlb_page(vma)))
                 return hugetlb_fault(mm, vma, address, flags);
 
-retry:
         pgd = pgd_offset(mm, address);
         pud = pud_alloc(mm, pgd, address);
         if (!pud)
@@ -3741,20 +3741,13 @@ retry:
                         if (dirty && !pmd_write(orig_pmd)) {
                                 ret = do_huge_pmd_wp_page(mm, vma, address, pmd,
                                                           orig_pmd);
-                                /*
-                                 * If COW results in an oom, the huge pmd will
-                                 * have been split, so retry the fault on the
-                                 * pte for a smaller charge.
-                                 */
-                                if (unlikely(ret & VM_FAULT_OOM))
-                                        goto retry;
-                                return ret;
+                                if (!(ret & VM_FAULT_FALLBACK))
+                                        return ret;
                         } else {
                                 huge_pmd_set_accessed(mm, vma, address, pmd,
                                                       orig_pmd, dirty);
+                                return 0;
                         }
-
-                        return 0;
                 }
         }