Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
authorLinus Torvalds <torvalds@linux-foundation.org>
Mon, 9 Mar 2009 16:14:17 +0000 (09:14 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Mon, 9 Mar 2009 16:14:17 +0000 (09:14 -0700)
* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  lguest: fix for CONFIG_SPARSE_IRQ=y
  lguest: fix crash 'unhandled trap 13 at <native_read_msr_safe>'

fs/btrfs/ctree.c
fs/btrfs/disk-io.c
fs/btrfs/extent-tree.c
fs/btrfs/locking.c
fs/btrfs/locking.h
kernel/tsacct.c

index 42491d728e9950f9c1f6f1cc4741e2997690f05f..37f31b5529aa0abe62a4e30ec7170c69c443eb0a 100644 (file)
@@ -277,7 +277,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
        if (*cow_ret == buf)
                unlock_orig = 1;
 
-       WARN_ON(!btrfs_tree_locked(buf));
+       btrfs_assert_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;
 
-       WARN_ON(!btrfs_tree_locked(path->nodes[1]));
+       btrfs_assert_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;
 
-       WARN_ON(!btrfs_tree_locked(path->nodes[1]));
+       btrfs_assert_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) {
-                       WARN_ON(!btrfs_tree_locked(c));
+                       btrfs_assert_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) {
-                       WARN_ON(!btrfs_tree_locked(path->nodes[level]));
+                       btrfs_assert_tree_locked(path->nodes[level]);
                        btrfs_tree_lock(next);
                        btrfs_set_lock_blocking(next);
                }
index adda739a0215345b99476435ad35f703174b1d26..3e18175248e030ce37aa8dcd1edd400cb7d79e1e 100644 (file)
@@ -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) {
-               WARN_ON(!btrfs_tree_locked(buf));
+               btrfs_assert_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);
 
-       WARN_ON(!btrfs_tree_locked(buf));
+       btrfs_assert_tree_locked(buf);
        if (transid != root->fs_info->generation) {
                printk(KERN_CRIT "btrfs transid mismatch buffer %llu, "
                       "found %llu running %llu\n",
index 6b5966aacf447bfd14fbd2a2a1ef3be8b1280c29..9abf81f71c46582db63b89c26d4e952651e3a1ee 100644 (file)
@@ -4418,13 +4418,13 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans,
        path = btrfs_alloc_path();
        BUG_ON(!path);
 
-       BUG_ON(!btrfs_tree_locked(parent));
+       btrfs_assert_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);
 
-       BUG_ON(!btrfs_tree_locked(node));
+       btrfs_assert_tree_locked(node);
        level = btrfs_header_level(node);
        extent_buffer_get(node);
        path->nodes[level] = node;
index 85506c4a3af7406c248b575149863ccdb8eb88f0..47b0a88c12a23a6d983eff4c3ff0e4bdf1347d2e 100644 (file)
@@ -220,8 +220,8 @@ int btrfs_tree_unlock(struct extent_buffer *eb)
        return 0;
 }
 
-int btrfs_tree_locked(struct extent_buffer *eb)
+void btrfs_assert_tree_locked(struct extent_buffer *eb)
 {
-       return test_bit(EXTENT_BUFFER_BLOCKING, &eb->bflags) ||
-                       spin_is_locked(&eb->lock);
+       if (!test_bit(EXTENT_BUFFER_BLOCKING, &eb->bflags))
+               assert_spin_locked(&eb->lock);
 }
index 6bb0afbff9287d4e841748f02d60eae488d7de7c..6c4ce457168cd41cc0b92a58453f5c8f2b2fe2f9 100644 (file)
 
 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
index 43f891b05a4b8911c13c5baa6420f63eb69aa3f6..00d59d048edfafdc7ec70462e0133c0ec620a6d8 100644 (file)
@@ -122,8 +122,10 @@ 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);
@@ -131,10 +133,12 @@ void acct_update_integrals(struct task_struct *tsk)
                delta = delta * USEC_PER_SEC + value.tv_usec;
 
                if (delta == 0)
-                       return;
+                       goto out;
                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);
        }
 }