---

yaml
---
r: 132123
b: refs/heads/master
c: cbd88c8
h: refs/heads/master
i:
  132121: c2325f4
  132119: fa3cd19
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1c91ffc896cf839a3a0923c0062ff61c930a21e0
+refs/heads/master: cbd88c8e6f5cdb8d4b9af01df825305200240382

trunk/arch/x86/lguest/boot.c

@@ -343,6 +343,11 @@ static void lguest_cpuid(unsigned int *ax, unsigned int *bx,
 		 * flush_tlb_user() for both user and kernel mappings unless
 		 * the Page Global Enable (PGE) feature bit is set. */
 		*dx |= 0x00002000;
+		/* We also lie, and say we're family id 5.  6 or greater
+		 * leads to a rdmsr in early_init_intel which we can't handle.
+		 * Family ID is returned as bits 8-12 in ax. */
+		*ax &= 0xFFFFF0FF;
+		*ax |= 0x00000500;
 		break;
 	case 0x80000000:
 		/* Futureproof this a little: if they ask how much extended

trunk/fs/btrfs/ctree.c

@@ -277,7 +277,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 	if (*cow_ret == buf)
 		unlock_orig = 1;
 
-	btrfs_assert_tree_locked(buf);
+	WARN_ON(!btrfs_tree_locked(buf));
 
 	if (parent)
 		parent_start = parent->start;
@@ -2365,7 +2365,7 @@ static int push_leaf_right(struct btrfs_trans_handle *trans, struct btrfs_root
 	if (slot >= btrfs_header_nritems(upper) - 1)
 		return 1;
 
-	btrfs_assert_tree_locked(path->nodes[1]);
+	WARN_ON(!btrfs_tree_locked(path->nodes[1]));
 
 	right = read_node_slot(root, upper, slot + 1);
 	btrfs_tree_lock(right);
@@ -2562,7 +2562,7 @@ static int push_leaf_left(struct btrfs_trans_handle *trans, struct btrfs_root
 	if (right_nritems == 0)
 		return 1;
 
-	btrfs_assert_tree_locked(path->nodes[1]);
+	WARN_ON(!btrfs_tree_locked(path->nodes[1]));
 
 	left = read_node_slot(root, path->nodes[1], slot - 1);
 	btrfs_tree_lock(left);
@@ -4101,7 +4101,7 @@ int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path)
 
 		next = read_node_slot(root, c, slot);
 		if (!path->skip_locking) {
-			btrfs_assert_tree_locked(c);
+			WARN_ON(!btrfs_tree_locked(c));
 			btrfs_tree_lock(next);
 			btrfs_set_lock_blocking(next);
 		}
@@ -4126,7 +4126,7 @@ int btrfs_next_leaf(struct btrfs_root *root, struct btrfs_path *path)
 			reada_for_search(root, path, level, slot, 0);
 		next = read_node_slot(root, next, 0);
 		if (!path->skip_locking) {
-			btrfs_assert_tree_locked(path->nodes[level]);
+			WARN_ON(!btrfs_tree_locked(path->nodes[level]));
 			btrfs_tree_lock(next);
 			btrfs_set_lock_blocking(next);
 		}

trunk/fs/btrfs/disk-io.c

@@ -857,7 +857,7 @@ int clean_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 	struct inode *btree_inode = root->fs_info->btree_inode;
 	if (btrfs_header_generation(buf) ==
 	    root->fs_info->running_transaction->transid) {
-		btrfs_assert_tree_locked(buf);
+		WARN_ON(!btrfs_tree_locked(buf));
 
 		/* ugh, clear_extent_buffer_dirty can be expensive */
 		btrfs_set_lock_blocking(buf);
@@ -2361,7 +2361,7 @@ void btrfs_mark_buffer_dirty(struct extent_buffer *buf)
 
 	btrfs_set_lock_blocking(buf);
 
-	btrfs_assert_tree_locked(buf);
+	WARN_ON(!btrfs_tree_locked(buf));
 	if (transid != root->fs_info->generation) {
 		printk(KERN_CRIT "btrfs transid mismatch buffer %llu, "
 		       "found %llu running %llu\n",

trunk/fs/btrfs/extent-tree.c

@@ -4418,13 +4418,13 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
 	path = btrfs_alloc_path();
 	BUG_ON(!path);
 
-	btrfs_assert_tree_locked(parent);
+	BUG_ON(!btrfs_tree_locked(parent));
 	parent_level = btrfs_header_level(parent);
 	extent_buffer_get(parent);
 	path->nodes[parent_level] = parent;
 	path->slots[parent_level] = btrfs_header_nritems(parent);
 
-	btrfs_assert_tree_locked(node);
+	BUG_ON(!btrfs_tree_locked(node));
 	level = btrfs_header_level(node);
 	extent_buffer_get(node);
 	path->nodes[level] = node;

trunk/fs/btrfs/locking.c

@@ -220,8 +220,8 @@ int btrfs_tree_unlock(struct extent_buffer *eb)
 	return 0;
 }
 
-void btrfs_assert_tree_locked(struct extent_buffer *eb)
+int btrfs_tree_locked(struct extent_buffer *eb)
 {
-	if (!test_bit(EXTENT_BUFFER_BLOCKING, &eb->bflags))
-		assert_spin_locked(&eb->lock);
+	return test_bit(EXTENT_BUFFER_BLOCKING, &eb->bflags) ||
+			spin_is_locked(&eb->lock);
 }

trunk/fs/btrfs/locking.h

@@ -21,11 +21,11 @@
 
 int btrfs_tree_lock(struct extent_buffer *eb);
 int btrfs_tree_unlock(struct extent_buffer *eb);
+int btrfs_tree_locked(struct extent_buffer *eb);
 
 int btrfs_try_tree_lock(struct extent_buffer *eb);
 int btrfs_try_spin_lock(struct extent_buffer *eb);
 
 void btrfs_set_lock_blocking(struct extent_buffer *eb);
 void btrfs_clear_lock_blocking(struct extent_buffer *eb);
-void btrfs_assert_tree_locked(struct extent_buffer *eb);
 #endif

trunk/kernel/tsacct.c

@@ -122,23 +122,19 @@ void acct_update_integrals(struct task_struct *tsk)
 	if (likely(tsk->mm)) {
 		cputime_t time, dtime;
 		struct timeval value;
-		unsigned long flags;
 		u64 delta;
 
-		local_irq_save(flags);
 		time = tsk->stime + tsk->utime;
 		dtime = cputime_sub(time, tsk->acct_timexpd);
 		jiffies_to_timeval(cputime_to_jiffies(dtime), &value);
 		delta = value.tv_sec;
 		delta = delta * USEC_PER_SEC + value.tv_usec;
 
 		if (delta == 0)
-			goto out;
+			return;
 		tsk->acct_timexpd = time;
 		tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
 		tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
-	out:
-		local_irq_restore(flags);
 	}
 }