Merge tag 'v3.10.17' into dev-kernel-3.10

This is the 3.10.17 stable release

Conflicts:
	drivers/usb/host/xhci.c

Change-Id: I6bd3b15ff92a0b94568b9d02e9bb1036becfca20

7 files changed, 68 insertions, 35 deletions

diff --git a/mm/bounce.c b/mm/bounce.c
index c9f0a4339a7d..5a7d58fb883b 100644
--- a/mm/bounce.c
+++ b/mm/bounce.c
@@ -204,6 +204,8 @@ static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
 	struct bio_vec *to, *from;
 	unsigned i;
 
+	if (force)
+		goto bounce;
 	bio_for_each_segment(from, *bio_orig, i)
 		if (page_to_pfn(from->bv_page) > queue_bounce_pfn(q))
 			goto bounce;
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 362c329b83fe..b92d0ce428b1 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2286,6 +2286,8 @@ static void collapse_huge_page(struct mm_struct *mm,
 		goto out;
 
 	vma = find_vma(mm, address);
+	if (!vma)
+		goto out;
 	hstart = (vma->vm_start + ~HPAGE_PMD_MASK) & HPAGE_PMD_MASK;
 	hend = vma->vm_end & HPAGE_PMD_MASK;
 	if (address < hstart || address + HPAGE_PMD_SIZE > hend)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index a14d5541a101..d8902c85b956 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5653,7 +5653,13 @@ static int compare_thresholds(const void *a, const void *b)
 	const struct mem_cgroup_threshold *_a = a;
 	const struct mem_cgroup_threshold *_b = b;
 
-	return _a->threshold - _b->threshold;
+	if (_a->threshold > _b->threshold)
+		return 1;
+
+	if (_a->threshold < _b->threshold)
+		return -1;
+
+	return 0;
 }
 
 static int mem_cgroup_oom_notify_cb(struct mem_cgroup *memcg)
diff --git a/mm/migrate.c b/mm/migrate.c
index 6f0c24438bba..25ca7caf9092 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -103,7 +103,7 @@ void putback_movable_pages(struct list_head *l)
 		list_del(&page->lru);
 		dec_zone_page_state(page, NR_ISOLATED_ANON +
 				page_is_file_cache(page));
-		if (unlikely(balloon_page_movable(page)))
+		if (unlikely(isolated_balloon_page(page)))
 			balloon_page_putback(page);
 		else
 			putback_lru_page(page);
diff --git a/mm/shmem.c b/mm/shmem.c
index 695db3b6216b..6019778b951b 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2879,14 +2879,8 @@ EXPORT_SYMBOL_GPL(shmem_truncate_range);
 
 /* common code */
 
-static char *shmem_dname(struct dentry *dentry, char *buffer, int buflen)
-{
-	return dynamic_dname(dentry, buffer, buflen, "/%s (deleted)",
-				dentry->d_name.name);
-}
-
 static struct dentry_operations anon_ops = {
-	.d_dname = shmem_dname
+	.d_dname = simple_dname
 };
 
 /**
diff --git a/mm/swap.c b/mm/swap.c
index dfd7d71d6841..9f2225f2b5b0 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -31,6 +31,7 @@
 #include <linux/memcontrol.h>
 #include <linux/gfp.h>
 #include <linux/uio.h>
+#include <linux/hugetlb.h>
 
 #include "internal.h"
 
@@ -78,6 +79,19 @@ static void __put_compound_page(struct page *page)
 
 static void put_compound_page(struct page *page)
 {
+	/*
+	 * hugetlbfs pages cannot be split from under us.  If this is a
+	 * hugetlbfs page, check refcount on head page and release the page if
+	 * the refcount becomes zero.
+	 */
+	if (PageHuge(page)) {
+		page = compound_head(page);
+		if (put_page_testzero(page))
+			__put_compound_page(page);
+
+		return;
+	}
+
 	if (unlikely(PageTail(page))) {
 		/* __split_huge_page_refcount can run under us */
 		struct page *page_head = compound_trans_head(page);
@@ -181,38 +195,51 @@ bool __get_page_tail(struct page *page)
 	 * proper PT lock that already serializes against
 	 * split_huge_page().
 	 */
-	unsigned long flags;
 	bool got = false;
-	struct page *page_head = compound_trans_head(page);
+	struct page *page_head;
 
-	if (likely(page != page_head && get_page_unless_zero(page_head))) {
+	/*
+	 * If this is a hugetlbfs page it cannot be split under us.  Simply
+	 * increment refcount for the head page.
+	 */
+	if (PageHuge(page)) {
+		page_head = compound_head(page);
+		atomic_inc(&page_head->_count);
+		got = true;
+	} else {
+		unsigned long flags;
+
+		page_head = compound_trans_head(page);
+		if (likely(page != page_head &&
+					get_page_unless_zero(page_head))) {
+
+			/* Ref to put_compound_page() comment. */
+			if (PageSlab(page_head)) {
+				if (likely(PageTail(page))) {
+					__get_page_tail_foll(page, false);
+					return true;
+				} else {
+					put_page(page_head);
+					return false;
+				}
+			}
 
-		/* Ref to put_compound_page() comment. */
-		if (PageSlab(page_head)) {
+			/*
+			 * page_head wasn't a dangling pointer but it
+			 * may not be a head page anymore by the time
+			 * we obtain the lock. That is ok as long as it
+			 * can't be freed from under us.
+			 */
+			flags = compound_lock_irqsave(page_head);
+			/* here __split_huge_page_refcount won't run anymore */
 			if (likely(PageTail(page))) {
 				__get_page_tail_foll(page, false);
-				return true;
-			} else {
-				put_page(page_head);
-				return false;
+				got = true;
 			}
+			compound_unlock_irqrestore(page_head, flags);
+			if (unlikely(!got))
+				put_page(page_head);
 		}
-
-		/*
-		 * page_head wasn't a dangling pointer but it
-		 * may not be a head page anymore by the time
-		 * we obtain the lock. That is ok as long as it
-		 * can't be freed from under us.
-		 */
-		flags = compound_lock_irqsave(page_head);
-		/* here __split_huge_page_refcount won't run anymore */
-		if (likely(PageTail(page))) {
-			__get_page_tail_foll(page, false);
-			got = true;
-		}
-		compound_unlock_irqrestore(page_head, flags);
-		if (unlikely(!got))
-			put_page(page_head);
 	}
 	return got;
 }
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 80c0b17373f7..c052bffff636 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -49,6 +49,7 @@
 #include <asm/div64.h>
 
 #include <linux/swapops.h>
+#include <linux/balloon_compaction.h>
 
 #include "internal.h"
 
@@ -1022,7 +1023,8 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
 	LIST_HEAD(clean_pages);
 
 	list_for_each_entry_safe(page, next, page_list, lru) {
-		if (page_is_file_cache(page) && !PageDirty(page)) {
+		if (page_is_file_cache(page) && !PageDirty(page) &&
+		    !isolated_balloon_page(page)) {
 			ClearPageActive(page);
 			list_move(&page->lru, &clean_pages);
 		}