7 files changed, 15 insertions, 81 deletions

diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h
index a9d6de4..3f2eb76 100644
--- a/arch/arm/include/asm/tlb.h
+++ b/arch/arm/include/asm/tlb.h
@@ -213,18 +213,17 @@ tlb_end_vma(struct mmu_gather *tlb, struct vm_area_struct *vma)
 
 static inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 {
+	tlb->pages[tlb->nr++] = page;
+	VM_WARN_ON(tlb->nr > tlb->max);
 	if (tlb->nr == tlb->max)
 		return true;
-	tlb->pages[tlb->nr++] = page;
 	return false;
 }
 
 static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 {
-	if (__tlb_remove_page(tlb, page)) {
+	if (__tlb_remove_page(tlb, page))
 		tlb_flush_mmu(tlb);
-		__tlb_remove_page(tlb, page);
-	}
 }
 
 static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
@@ -233,12 +232,6 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
 	return __tlb_remove_page(tlb, page);
 }
 
-static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb,
-					 struct page *page)
-{
-	return __tlb_remove_page(tlb, page);
-}
-
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
diff --git a/arch/ia64/include/asm/tlb.h b/arch/ia64/include/asm/tlb.h
index bfe6295..fced197 100644
--- a/arch/ia64/include/asm/tlb.h
+++ b/arch/ia64/include/asm/tlb.h
@@ -207,15 +207,15 @@ tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end)
  */
 static inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 {
-	if (tlb->nr == tlb->max)
-		return true;
-
 	tlb->need_flush = 1;
 
 	if (!tlb->nr && tlb->pages == tlb->local)
 		__tlb_alloc_page(tlb);
 
 	tlb->pages[tlb->nr++] = page;
+	VM_WARN_ON(tlb->nr > tlb->max);
+	if (tlb->nr == tlb->max)
+		return true;
 	return false;
 }
 
@@ -236,10 +236,8 @@ static inline void tlb_flush_mmu(struct mmu_gather *tlb)
 
 static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 {
-	if (__tlb_remove_page(tlb, page)) {
+	if (__tlb_remove_page(tlb, page))
 		tlb_flush_mmu(tlb);
-		__tlb_remove_page(tlb, page);
-	}
 }
 
 static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
@@ -248,12 +246,6 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
 	return __tlb_remove_page(tlb, page);
 }
 
-static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb,
-					 struct page *page)
-{
-	return __tlb_remove_page(tlb, page);
-}
-
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h
index 28b159c..853b2a3 100644
--- a/arch/s390/include/asm/tlb.h
+++ b/arch/s390/include/asm/tlb.h
@@ -104,12 +104,6 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
 	return __tlb_remove_page(tlb, page);
 }
 
-static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb,
-					 struct page *page)
-{
-	return __tlb_remove_page(tlb, page);
-}
-
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
diff --git a/arch/sh/include/asm/tlb.h b/arch/sh/include/asm/tlb.h
index 0f988b3..46e0d63 100644
--- a/arch/sh/include/asm/tlb.h
+++ b/arch/sh/include/asm/tlb.h
@@ -118,12 +118,6 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
 	return __tlb_remove_page(tlb, page);
 }
 
-static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb,
-					 struct page *page)
-{
-	return __tlb_remove_page(tlb, page);
-}
-
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
diff --git a/arch/um/include/asm/tlb.h b/arch/um/include/asm/tlb.h
index 8258dd4..600a2e9 100644
--- a/arch/um/include/asm/tlb.h
+++ b/arch/um/include/asm/tlb.h
@@ -116,12 +116,6 @@ static inline bool __tlb_remove_page_size(struct mmu_gather *tlb,
 	return __tlb_remove_page(tlb, page);
 }
 
-static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb,
-					 struct page *page)
-{
-	return __tlb_remove_page(tlb, page);
-}
-
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h
index 256c9de..7eed8cf 100644
--- a/include/asm-generic/tlb.h
+++ b/include/asm-generic/tlb.h
@@ -107,11 +107,6 @@ struct mmu_gather {
 	struct mmu_gather_batch	local;
 	struct page		*__pages[MMU_GATHER_BUNDLE];
 	unsigned int		batch_count;
-	/*
-	 * __tlb_adjust_range  will track the new addr here,
-	 * that that we can adjust the range after the flush
-	 */
-	unsigned long addr;
 	int page_size;
 };
 
@@ -130,12 +125,6 @@ static inline void __tlb_adjust_range(struct mmu_gather *tlb,
 {
 	tlb->start = min(tlb->start, address);
 	tlb->end = max(tlb->end, address + range_size);
-	/*
-	 * Track the last address with which we adjusted the range. This
-	 * will be used later to adjust again after a mmu_flush due to
-	 * failed __tlb_remove_page
-	 */
-	tlb->addr = address;
 }
 
 static inline void __tlb_reset_range(struct mmu_gather *tlb)
@@ -151,15 +140,11 @@ static inline void __tlb_reset_range(struct mmu_gather *tlb)
 static inline void tlb_remove_page_size(struct mmu_gather *tlb,
 					struct page *page, int page_size)
 {
-	if (__tlb_remove_page_size(tlb, page, page_size)) {
+	if (__tlb_remove_page_size(tlb, page, page_size))
 		tlb_flush_mmu(tlb);
-		tlb->page_size = page_size;
-		__tlb_adjust_range(tlb, tlb->addr, page_size);
-		__tlb_remove_page_size(tlb, page, page_size);
-	}
 }
 
-static bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
+static inline bool __tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 {
 	return __tlb_remove_page_size(tlb, page, PAGE_SIZE);
 }
@@ -173,15 +158,6 @@ static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page)
 	return tlb_remove_page_size(tlb, page, PAGE_SIZE);
 }
 
-static inline bool __tlb_remove_pte_page(struct mmu_gather *tlb, struct page *page)
-{
-	/* active->nr should be zero when we call this */
-	VM_BUG_ON_PAGE(tlb->active->nr, page);
-	tlb->page_size = PAGE_SIZE;
-	__tlb_adjust_range(tlb, tlb->addr, PAGE_SIZE);
-	return __tlb_remove_page(tlb, page);
-}
-
 #ifndef tlb_remove_check_page_size_change
 #define tlb_remove_check_page_size_change tlb_remove_check_page_size_change
 static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
diff --git a/mm/memory.c b/mm/memory.c
index eae20eb..0a72f82 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -300,15 +300,14 @@ bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, int page_
 	struct mmu_gather_batch *batch;
 
 	VM_BUG_ON(!tlb->end);
-
-	if (!tlb->page_size)
-		tlb->page_size = page_size;
-	else {
-		if (page_size != tlb->page_size)
-			return true;
-	}
+	VM_WARN_ON(tlb->page_size != page_size);
 
 	batch = tlb->active;
+	/*
+	 * Add the page and check if we are full. If so
+	 * force a flush.
+	 */
+	batch->pages[batch->nr++] = page;
 	if (batch->nr == batch->max) {
 		if (!tlb_next_batch(tlb))
 			return true;
@@ -316,7 +315,6 @@ bool __tlb_remove_page_size(struct mmu_gather *tlb, struct page *page, int page_
 	}
 	VM_BUG_ON_PAGE(batch->nr > batch->max, page);
 
-	batch->pages[batch->nr++] = page;
 	return false;
 }
 
@@ -1122,7 +1120,6 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb,
 	pte_t *start_pte;
 	pte_t *pte;
 	swp_entry_t entry;
-	struct page *pending_page = NULL;
 
 	tlb_remove_check_page_size_change(tlb, PAGE_SIZE);
 again:
@@ -1177,7 +1174,6 @@ again:
 				print_bad_pte(vma, addr, ptent, page);
 			if (unlikely(__tlb_remove_page(tlb, page))) {
 				force_flush = 1;
-				pending_page = page;
 				addr += PAGE_SIZE;
 				break;
 			}
@@ -1218,11 +1214,6 @@ again:
 	if (force_flush) {
 		force_flush = 0;
 		tlb_flush_mmu_free(tlb);
-		if (pending_page) {
-			/* remove the page with new size */
-			__tlb_remove_pte_page(tlb, pending_page);
-			pending_page = NULL;
-		}
 		if (addr != end)
 			goto again;
 	}