Merge commit 'v3.7-rc1' into stable/for-linus-3.7

* commit 'v3.7-rc1': (10892 commits)
  Linux 3.7-rc1
  x86, boot: Explicitly include autoconf.h for hostprogs
  perf: Fix UAPI fallout
  ARM: config: make sure that platforms are ordered by option string
  ARM: config: sort select statements alphanumerically
  UAPI: (Scripted) Disintegrate include/linux/byteorder
  UAPI: (Scripted) Disintegrate include/linux
  UAPI: Unexport linux/blk_types.h
  UAPI: Unexport part of linux/ppp-comp.h
  perf: Handle new rbtree implementation
  procfs: don't need a PATH_MAX allocation to hold a string representation of an int
  vfs: embed struct filename inside of names_cache allocation if possible
  audit: make audit_inode take struct filename
  vfs: make path_openat take a struct filename pointer
  vfs: turn do_path_lookup into wrapper around struct filename variant
  audit: allow audit code to satisfy getname requests from its names_list
  vfs: define struct filename and have getname() return it
  btrfs: Fix compilation with user namespace support enabled
  userns: Fix posix_acl_file_xattr_userns gid conversion
  userns: Properly print bluetooth socket uids
  ...

1 files changed, 73 insertions, 39 deletions

diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index 73709f7ce92..5829d2a950d 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -34,6 +34,11 @@
 #include <asm/mmu.h>
 #include <asm/spu.h>
 
+/* some sanity checks */
+#if (PGTABLE_RANGE >> 43) > SLICE_MASK_SIZE
+#error PGTABLE_RANGE exceeds slice_mask high_slices size
+#endif
+
 static DEFINE_SPINLOCK(slice_convert_lock);
 
 
@@ -42,7 +47,7 @@ int _slice_debug = 1;
 
 static void slice_print_mask(const char *label, struct slice_mask mask)
 {
-	char	*p, buf[16 + 3 + 16 + 1];
+	char	*p, buf[16 + 3 + 64 + 1];
 	int	i;
 
 	if (!_slice_debug)
@@ -54,7 +59,7 @@ static void slice_print_mask(const char *label, struct slice_mask mask)
 	*(p++) = '-';
 	*(p++) = ' ';
 	for (i = 0; i < SLICE_NUM_HIGH; i++)
-		*(p++) = (mask.high_slices & (1 << i)) ? '1' : '0';
+		*(p++) = (mask.high_slices & (1ul << i)) ? '1' : '0';
 	*(p++) = 0;
 
 	printk(KERN_DEBUG "%s:%s\n", label, buf);
@@ -84,8 +89,8 @@ static struct slice_mask slice_range_to_mask(unsigned long start,
 	}
 
 	if ((start + len) > SLICE_LOW_TOP)
-		ret.high_slices = (1u << (GET_HIGH_SLICE_INDEX(end) + 1))
-			- (1u << GET_HIGH_SLICE_INDEX(start));
+		ret.high_slices = (1ul << (GET_HIGH_SLICE_INDEX(end) + 1))
+			- (1ul << GET_HIGH_SLICE_INDEX(start));
 
 	return ret;
 }
@@ -135,26 +140,31 @@ static struct slice_mask slice_mask_for_free(struct mm_struct *mm)
 
 	for (i = 0; i < SLICE_NUM_HIGH; i++)
 		if (!slice_high_has_vma(mm, i))
-			ret.high_slices |= 1u << i;
+			ret.high_slices |= 1ul << i;
 
 	return ret;
 }
 
 static struct slice_mask slice_mask_for_size(struct mm_struct *mm, int psize)
 {
+	unsigned char *hpsizes;
+	int index, mask_index;
 	struct slice_mask ret = { 0, 0 };
 	unsigned long i;
-	u64 psizes;
+	u64 lpsizes;
 
-	psizes = mm->context.low_slices_psize;
+	lpsizes = mm->context.low_slices_psize;
 	for (i = 0; i < SLICE_NUM_LOW; i++)
-		if (((psizes >> (i * 4)) & 0xf) == psize)
+		if (((lpsizes >> (i * 4)) & 0xf) == psize)
 			ret.low_slices |= 1u << i;
 
-	psizes = mm->context.high_slices_psize;
-	for (i = 0; i < SLICE_NUM_HIGH; i++)
-		if (((psizes >> (i * 4)) & 0xf) == psize)
-			ret.high_slices |= 1u << i;
+	hpsizes = mm->context.high_slices_psize;
+	for (i = 0; i < SLICE_NUM_HIGH; i++) {
+		mask_index = i & 0x1;
+		index = i >> 1;
+		if (((hpsizes[index] >> (mask_index * 4)) & 0xf) == psize)
+			ret.high_slices |= 1ul << i;
+	}
 
 	return ret;
 }
@@ -183,8 +193,10 @@ static void slice_flush_segments(void *parm)
 
 static void slice_convert(struct mm_struct *mm, struct slice_mask mask, int psize)
 {
+	int index, mask_index;
 	/* Write the new slice psize bits */
-	u64 lpsizes, hpsizes;
+	unsigned char *hpsizes;
+	u64 lpsizes;
 	unsigned long i, flags;
 
 	slice_dbg("slice_convert(mm=%p, psize=%d)\n", mm, psize);
@@ -201,14 +213,18 @@ static void slice_convert(struct mm_struct *mm, struct slice_mask mask, int psiz
 			lpsizes = (lpsizes & ~(0xful << (i * 4))) |
 				(((unsigned long)psize) << (i * 4));
 
-	hpsizes = mm->context.high_slices_psize;
-	for (i = 0; i < SLICE_NUM_HIGH; i++)
-		if (mask.high_slices & (1u << i))
-			hpsizes = (hpsizes & ~(0xful << (i * 4))) |
-				(((unsigned long)psize) << (i * 4));
-
+	/* Assign the value back */
 	mm->context.low_slices_psize = lpsizes;
-	mm->context.high_slices_psize = hpsizes;
+
+	hpsizes = mm->context.high_slices_psize;
+	for (i = 0; i < SLICE_NUM_HIGH; i++) {
+		mask_index = i & 0x1;
+		index = i >> 1;
+		if (mask.high_slices & (1ul << i))
+			hpsizes[index] = (hpsizes[index] &
+					  ~(0xf << (mask_index * 4))) |
+				(((unsigned long)psize) << (mask_index * 4));
+	}
 
 	slice_dbg(" lsps=%lx, hsps=%lx\n",
 		  mm->context.low_slices_psize,
@@ -587,18 +603,19 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp,
 
 unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr)
 {
-	u64 psizes;
-	int index;
+	unsigned char *hpsizes;
+	int index, mask_index;
 
 	if (addr < SLICE_LOW_TOP) {
-		psizes = mm->context.low_slices_psize;
+		u64 lpsizes;
+		lpsizes = mm->context.low_slices_psize;
 		index = GET_LOW_SLICE_INDEX(addr);
-	} else {
-		psizes = mm->context.high_slices_psize;
-		index = GET_HIGH_SLICE_INDEX(addr);
+		return (lpsizes >> (index * 4)) & 0xf;
 	}
-
-	return (psizes >> (index * 4)) & 0xf;
+	hpsizes = mm->context.high_slices_psize;
+	index = GET_HIGH_SLICE_INDEX(addr);
+	mask_index = index & 0x1;
+	return (hpsizes[index >> 1] >> (mask_index * 4)) & 0xf;
 }
 EXPORT_SYMBOL_GPL(get_slice_psize);
 
@@ -618,7 +635,9 @@ EXPORT_SYMBOL_GPL(get_slice_psize);
  */
 void slice_set_user_psize(struct mm_struct *mm, unsigned int psize)
 {
-	unsigned long flags, lpsizes, hpsizes;
+	int index, mask_index;
+	unsigned char *hpsizes;
+	unsigned long flags, lpsizes;
 	unsigned int old_psize;
 	int i;
 
@@ -639,15 +658,21 @@ void slice_set_user_psize(struct mm_struct *mm, unsigned int psize)
 		if (((lpsizes >> (i * 4)) & 0xf) == old_psize)
 			lpsizes = (lpsizes & ~(0xful << (i * 4))) |
 				(((unsigned long)psize) << (i * 4));
+	/* Assign the value back */
+	mm->context.low_slices_psize = lpsizes;
 
 	hpsizes = mm->context.high_slices_psize;
-	for (i = 0; i < SLICE_NUM_HIGH; i++)
-		if (((hpsizes >> (i * 4)) & 0xf) == old_psize)
-			hpsizes = (hpsizes & ~(0xful << (i * 4))) |
-				(((unsigned long)psize) << (i * 4));
+	for (i = 0; i < SLICE_NUM_HIGH; i++) {
+		mask_index = i & 0x1;
+		index = i >> 1;
+		if (((hpsizes[index] >> (mask_index * 4)) & 0xf) == old_psize)
+			hpsizes[index] = (hpsizes[index] &
+					  ~(0xf << (mask_index * 4))) |
+				(((unsigned long)psize) << (mask_index * 4));
+	}
+
+
 
-	mm->context.low_slices_psize = lpsizes;
-	mm->context.high_slices_psize = hpsizes;
 
 	slice_dbg(" lsps=%lx, hsps=%lx\n",
 		  mm->context.low_slices_psize,
@@ -660,18 +685,27 @@ void slice_set_user_psize(struct mm_struct *mm, unsigned int psize)
 void slice_set_psize(struct mm_struct *mm, unsigned long address,
 		     unsigned int psize)
 {
+	unsigned char *hpsizes;
 	unsigned long i, flags;
-	u64 *p;
+	u64 *lpsizes;
 
 	spin_lock_irqsave(&slice_convert_lock, flags);
 	if (address < SLICE_LOW_TOP) {
 		i = GET_LOW_SLICE_INDEX(address);
-		p = &mm->context.low_slices_psize;
+		lpsizes = &mm->context.low_slices_psize;
+		*lpsizes = (*lpsizes & ~(0xful << (i * 4))) |
+			((unsigned long) psize << (i * 4));
 	} else {
+		int index, mask_index;
 		i = GET_HIGH_SLICE_INDEX(address);
-		p = &mm->context.high_slices_psize;
+		hpsizes = mm->context.high_slices_psize;
+		mask_index = i & 0x1;
+		index = i >> 1;
+		hpsizes[index] = (hpsizes[index] &
+				  ~(0xf << (mask_index * 4))) |
+			(((unsigned long)psize) << (mask_index * 4));
 	}
-	*p = (*p & ~(0xful << (i * 4))) | ((unsigned long) psize << (i * 4));
+
 	spin_unlock_irqrestore(&slice_convert_lock, flags);
 
 #ifdef CONFIG_SPU_BASE