Merge tag 'v3.11-rc5' into sched/core

Merge Linux 3.11-rc5, to pick up the latest fixes.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

9 files changed, 39 insertions, 39 deletions

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 243e710c6039..a92012a71702 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1620,7 +1620,9 @@ static void __split_huge_page_refcount(struct page *page,
                                      ((1L << PG_referenced) |
                                       (1L << PG_swapbacked) |
                                       (1L << PG_mlocked) |
-                                      (1L << PG_uptodate)));
+                                      (1L << PG_uptodate) |
+                                      (1L << PG_active) |
+                                      (1L << PG_unevictable)));
                 page_tail->flags |= (1L << PG_dirty);
 
                 /* clear PageTail before overwriting first_page */
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 00a7a664b9c1..c290a1cf3862 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6335,6 +6335,7 @@ static void mem_cgroup_css_offline(struct cgroup *cont)
         mem_cgroup_invalidate_reclaim_iterators(memcg);
         mem_cgroup_reparent_charges(memcg);
         mem_cgroup_destroy_all_caches(memcg);
+        vmpressure_cleanup(&memcg->vmpressure);
 }
 
 static void mem_cgroup_css_free(struct cgroup *cont)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 74310017296e..4baf12e534d1 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -732,7 +732,10 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
                 if (prev) {
                         vma = prev;
                         next = vma->vm_next;
-                        continue;
+                        if (mpol_equal(vma_policy(vma), new_pol))
+                                continue;
+                        /* vma_merge() joined vma && vma->next, case 8 */
+                        goto replace;
                 }
                 if (vma->vm_start != vmstart) {
                         err = split_vma(vma->vm_mm, vma, vmstart, 1);
@@ -744,6 +747,7 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
                         if (err)
                                 goto out;
                 }
+ replace:
                 err = vma_replace_policy(vma, new_pol);
                 if (err)
                         goto out;
diff --git a/mm/mmap.c b/mm/mmap.c
index fbad7b091090..1edbaa3136c3 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -865,7 +865,7 @@ again:			remove_next = 1 + (end > next->vm_end);
                 if (next->anon_vma)
                         anon_vma_merge(vma, next);
                 mm->map_count--;
-                vma_set_policy(vma, vma_policy(next));
+                mpol_put(vma_policy(next));
                 kmem_cache_free(vm_area_cachep, next);
                 /*
                  * In mprotect's case 6 (see comments on vma_merge),
diff --git a/mm/shmem.c b/mm/shmem.c
index a87990cf9f94..8335dbd3fc35 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1798,7 +1798,8 @@ static loff_t shmem_file_llseek(struct file *file, loff_t offset, int whence)
                 }
         }
 
-        offset = vfs_setpos(file, offset, MAX_LFS_FILESIZE);
+        if (offset >= 0)
+                offset = vfs_setpos(file, offset, MAX_LFS_FILESIZE);
         mutex_unlock(&inode->i_mutex);
         return offset;
 }
diff --git a/mm/slub.c b/mm/slub.c
index 2b02d666bf63..e3ba1f2cf60c 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1968,9 +1968,6 @@ static void put_cpu_partial(struct kmem_cache *s, struct page *page, int drain)
         int pages;
         int pobjects;
 
-        if (!s->cpu_partial)
-                return;
-
         do {
                 pages = 0;
                 pobjects = 0;
diff --git a/mm/swap.c b/mm/swap.c
index 4a1d0d2c52fa..62b78a6e224f 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -512,12 +512,7 @@ EXPORT_SYMBOL(__lru_cache_add);
  */
 void lru_cache_add(struct page *page)
 {
-        if (PageActive(page)) {
-                VM_BUG_ON(PageUnevictable(page));
-        } else if (PageUnevictable(page)) {
-                VM_BUG_ON(PageActive(page));
-        }
-
+        VM_BUG_ON(PageActive(page) && PageUnevictable(page));
         VM_BUG_ON(PageLRU(page));
         __lru_cache_add(page);
 }
@@ -539,6 +534,7 @@ void add_page_to_unevictable_list(struct page *page)
 
         spin_lock_irq(&zone->lru_lock);
         lruvec = mem_cgroup_page_lruvec(page, zone);
+        ClearPageActive(page);
         SetPageUnevictable(page);
         SetPageLRU(page);
         add_page_to_lru_list(page, lruvec, LRU_UNEVICTABLE);
@@ -774,8 +770,6 @@ EXPORT_SYMBOL(__pagevec_release);
 void lru_add_page_tail(struct page *page, struct page *page_tail,
                        struct lruvec *lruvec, struct list_head *list)
 {
-        int uninitialized_var(active);
-        enum lru_list lru;
         const int file = 0;
 
         VM_BUG_ON(!PageHead(page));
@@ -787,20 +781,6 @@ void lru_add_page_tail(struct page *page, struct page *page_tail,
         if (!list)
                 SetPageLRU(page_tail);
 
-        if (page_evictable(page_tail)) {
-                if (PageActive(page)) {
-                        SetPageActive(page_tail);
-                        active = 1;
-                        lru = LRU_ACTIVE_ANON;
-                } else {
-                        active = 0;
-                        lru = LRU_INACTIVE_ANON;
-                }
-        } else {
-                SetPageUnevictable(page_tail);
-                lru = LRU_UNEVICTABLE;
-        }
-
         if (likely(PageLRU(page)))
                 list_add_tail(&page_tail->lru, &page->lru);
         else if (list) {
@@ -816,13 +796,13 @@ void lru_add_page_tail(struct page *page, struct page *page_tail,
                  * Use the standard add function to put page_tail on the list,
                  * but then correct its position so they all end up in order.
                  */
-                add_page_to_lru_list(page_tail, lruvec, lru);
+                add_page_to_lru_list(page_tail, lruvec, page_lru(page_tail));
                 list_head = page_tail->lru.prev;
                 list_move_tail(&page_tail->lru, list_head);
         }
 
         if (!PageUnevictable(page))
-                update_page_reclaim_stat(lruvec, file, active);
+                update_page_reclaim_stat(lruvec, file, PageActive(page_tail));
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
@@ -833,7 +813,6 @@ static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec,
         int active = PageActive(page);
         enum lru_list lru = page_lru(page);
 
-        VM_BUG_ON(PageUnevictable(page));
         VM_BUG_ON(PageLRU(page));
 
         SetPageLRU(page);
diff --git a/mm/vmpressure.c b/mm/vmpressure.c
index 736a6011c2c8..0c1e37d829fa 100644
--- a/mm/vmpressure.c
+++ b/mm/vmpressure.c
@@ -180,12 +180,12 @@ static void vmpressure_work_fn(struct work_struct *work)
         if (!vmpr->scanned)
                 return;
 
-        mutex_lock(&vmpr->sr_lock);
+        spin_lock(&vmpr->sr_lock);
         scanned = vmpr->scanned;
         reclaimed = vmpr->reclaimed;
         vmpr->scanned = 0;
         vmpr->reclaimed = 0;
-        mutex_unlock(&vmpr->sr_lock);
+        spin_unlock(&vmpr->sr_lock);
 
         do {
                 if (vmpressure_event(vmpr, scanned, reclaimed))
@@ -240,13 +240,13 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg,
         if (!scanned)
                 return;
 
-        mutex_lock(&vmpr->sr_lock);
+        spin_lock(&vmpr->sr_lock);
         vmpr->scanned += scanned;
         vmpr->reclaimed += reclaimed;
         scanned = vmpr->scanned;
-        mutex_unlock(&vmpr->sr_lock);
+        spin_unlock(&vmpr->sr_lock);
 
-        if (scanned < vmpressure_win || work_pending(&vmpr->work))
+        if (scanned < vmpressure_win)
                 return;
         schedule_work(&vmpr->work);
 }
@@ -367,8 +367,24 @@ void vmpressure_unregister_event(struct cgroup *cg, struct cftype *cft,
  */
 void vmpressure_init(struct vmpressure *vmpr)
 {
-        mutex_init(&vmpr->sr_lock);
+        spin_lock_init(&vmpr->sr_lock);
         mutex_init(&vmpr->events_lock);
         INIT_LIST_HEAD(&vmpr->events);
         INIT_WORK(&vmpr->work, vmpressure_work_fn);
 }
+
+/**
+ * vmpressure_cleanup() - shuts down vmpressure control structure
+ * @vmpr:       Structure to be cleaned up
+ *
+ * This function should be called before the structure in which it is
+ * embedded is cleaned up.
+ */
+void vmpressure_cleanup(struct vmpressure *vmpr)
+{
+        /*
+         * Make sure there is no pending work before eventfd infrastructure
+         * goes away.
+         */
+        flush_work(&vmpr->work);
+}
diff --git a/mm/zbud.c b/mm/zbud.c
index 9bb4710e3589..ad1e781284fd 100644
--- a/mm/zbud.c
+++ b/mm/zbud.c
@@ -257,7 +257,7 @@ int zbud_alloc(struct zbud_pool *pool, int size, gfp_t gfp,
 
         if (size <= 0 || gfp & __GFP_HIGHMEM)
                 return -EINVAL;
-        if (size > PAGE_SIZE - ZHDR_SIZE_ALIGNED)
+        if (size > PAGE_SIZE - ZHDR_SIZE_ALIGNED - CHUNK_SIZE)
                 return -ENOSPC;
         chunks = size_to_chunks(size);
         spin_lock(&pool->lock);