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btrfs: Panic on bad rbtree operations

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The ordered data and relocation trees have BUG_ONs to protect against
bad tree operations.

This patch replaces them with a panic that will report the problem.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
This commit is contained in:
Jeff Mahoney
2011-10-03 23:22:33 -04:00
committed by David Sterba
parent c2d904e086
commit 43c04fb1b8
2 changed files with 39 additions and 9 deletions
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12
fs/btrfs/ordered-data.c
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@@ -59,6 +59,14 @@ static struct rb_node *tree_insert(struct rb_root *root, u64 file_offset,
return NULL;
}
static void ordered_data_tree_panic(struct inode *inode, int errno,
u64 offset)
{
struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
btrfs_panic(fs_info, errno, "Inconsistency in ordered tree at offset "
"%llu\n", (unsigned long long)offset);
}
/*
* look for a given offset in the tree, and if it can't be found return the
* first lesser offset
@@ -207,7 +215,8 @@ static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
spin_lock(&tree->lock);
node = tree_insert(&tree->tree, file_offset,
&entry->rb_node);
BUG_ON(node);
if (node)
ordered_data_tree_panic(inode, -EEXIST, file_offset);
spin_unlock(&tree->lock);
spin_lock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
@@ -215,7 +224,6 @@ static int __btrfs_add_ordered_extent(struct inode *inode, u64 file_offset,
&BTRFS_I(inode)->root->fs_info->ordered_extents);
spin_unlock(&BTRFS_I(inode)->root->fs_info->ordered_extent_lock);
BUG_ON(node);
return 0;
}