Merge drm/drm-next into drm-misc-next

Finally have a reason for a backmerge other than "it's been a while"!

Backmerging drm-next to -misc-next to facilitate Rob Herring's work on
Panfrost.

Signed-off-by: Sean Paul <seanpaul@chromium.org>

1 files changed, 10 insertions, 22 deletions

diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h
index e2d7039af6a3..bcf909d0de5f 100644
--- a/include/linux/pagemap.h
+++ b/include/linux/pagemap.h
@@ -164,7 +164,7 @@ void release_pages(struct page **pages, int nr);
  * will find the page or it will not. Likewise, the old find_get_page could run
  * either before the insertion or afterwards, depending on timing.
  */
-static inline int page_cache_get_speculative(struct page *page)
+static inline int __page_cache_add_speculative(struct page *page, int count)
 {
 #ifdef CONFIG_TINY_RCU
 # ifdef CONFIG_PREEMPT_COUNT
@@ -180,10 +180,10 @@ static inline int page_cache_get_speculative(struct page *page)
 	 * SMP requires.
 	 */
 	VM_BUG_ON_PAGE(page_count(page) == 0, page);
-	page_ref_inc(page);
+	page_ref_add(page, count);
 
 #else
-	if (unlikely(!get_page_unless_zero(page))) {
+	if (unlikely(!page_ref_add_unless(page, count, 0))) {
 		/*
 		 * Either the page has been freed, or will be freed.
 		 * In either case, retry here and the caller should
@@ -197,27 +197,14 @@ static inline int page_cache_get_speculative(struct page *page)
 	return 1;
 }
 
-/*
- * Same as above, but add instead of inc (could just be merged)
- */
-static inline int page_cache_add_speculative(struct page *page, int count)
+static inline int page_cache_get_speculative(struct page *page)
 {
-	VM_BUG_ON(in_interrupt());
-
-#if !defined(CONFIG_SMP) && defined(CONFIG_TREE_RCU)
-# ifdef CONFIG_PREEMPT_COUNT
-	VM_BUG_ON(!in_atomic() && !irqs_disabled());
-# endif
-	VM_BUG_ON_PAGE(page_count(page) == 0, page);
-	page_ref_add(page, count);
-
-#else
-	if (unlikely(!page_ref_add_unless(page, count, 0)))
-		return 0;
-#endif
-	VM_BUG_ON_PAGE(PageCompound(page) && page != compound_head(page), page);
+	return __page_cache_add_speculative(page, 1);
+}
 
-	return 1;
+static inline int page_cache_add_speculative(struct page *page, int count)
+{
+	return __page_cache_add_speculative(page, count);
 }
 
 #ifdef CONFIG_NUMA
@@ -252,6 +239,7 @@ pgoff_t page_cache_prev_miss(struct address_space *mapping,
 #define FGP_WRITE		0x00000008
 #define FGP_NOFS		0x00000010
 #define FGP_NOWAIT		0x00000020
+#define FGP_FOR_MMAP		0x00000040
 
 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t offset,
 		int fgp_flags, gfp_t cache_gfp_mask);