Merge branch 'akpm' (incoming from Andrew)

Merge first patch-bomb from Andrew Morton:

 - a couple of misc things

 - inotify/fsnotify work from Jan

 - ocfs2 updates (partial)

 - about half of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (117 commits)
  mm/migrate: remove unused function, fail_migrate_page()
  mm/migrate: remove putback_lru_pages, fix comment on putback_movable_pages
  mm/migrate: correct failure handling if !hugepage_migration_support()
  mm/migrate: add comment about permanent failure path
  mm, page_alloc: warn for non-blockable __GFP_NOFAIL allocation failure
  mm: compaction: reset scanner positions immediately when they meet
  mm: compaction: do not mark unmovable pageblocks as skipped in async compaction
  mm: compaction: detect when scanners meet in isolate_freepages
  mm: compaction: reset cached scanner pfn's before reading them
  mm: compaction: encapsulate defer reset logic
  mm: compaction: trace compaction begin and end
  memcg, oom: lock mem_cgroup_print_oom_info
  sched: add tracepoints related to NUMA task migration
  mm: numa: do not automatically migrate KSM pages
  mm: numa: trace tasks that fail migration due to rate limiting
  mm: numa: limit scope of lock for NUMA migrate rate limiting
  mm: numa: make NUMA-migrate related functions static
  lib/show_mem.c: show num_poisoned_pages when oom
  mm/hwpoison: add '#' to hwpoison_inject
  mm/memblock: use WARN_ONCE when MAX_NUMNODES passed as input parameter
  ...

1 files changed, 34 insertions, 2 deletions

diff --git a/mm/util.c b/mm/util.c
index 808f375648e7..a24aa22f2473 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -404,13 +404,45 @@ struct address_space *page_mapping(struct page *page)
         return mapping;
 }
 
+int overcommit_ratio_handler(struct ctl_table *table, int write,
+                             void __user *buffer, size_t *lenp,
+                             loff_t *ppos)
+{
+        int ret;
+
+        ret = proc_dointvec(table, write, buffer, lenp, ppos);
+        if (ret == 0 && write)
+                sysctl_overcommit_kbytes = 0;
+        return ret;
+}
+
+int overcommit_kbytes_handler(struct ctl_table *table, int write,
+                             void __user *buffer, size_t *lenp,
+                             loff_t *ppos)
+{
+        int ret;
+
+        ret = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
+        if (ret == 0 && write)
+                sysctl_overcommit_ratio = 0;
+        return ret;
+}
+
 /*
  * Committed memory limit enforced when OVERCOMMIT_NEVER policy is used
  */
 unsigned long vm_commit_limit(void)
 {
-        return ((totalram_pages - hugetlb_total_pages())
-                * sysctl_overcommit_ratio / 100) + total_swap_pages;
+        unsigned long allowed;
+
+        if (sysctl_overcommit_kbytes)
+                allowed = sysctl_overcommit_kbytes >> (PAGE_SHIFT - 10);
+        else
+                allowed = ((totalram_pages - hugetlb_total_pages())
+                           * sysctl_overcommit_ratio / 100);
+        allowed += total_swap_pages;
+
+        return allowed;
 }