Btrfs: Add additional debugging for metadata checksum failures

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index bc5bd5abb28a..e444b99e02da 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -283,6 +283,7 @@ static int btree_releasepage(struct page *page, gfp_t gfp_flags)
         map = &BTRFS_I(page->mapping->host)->extent_tree;
         ret = try_release_extent_mapping(map, tree, page, gfp_flags);
         if (ret == 1) {
+                invalidate_extent_lru(tree, page_offset(page), PAGE_CACHE_SIZE);
                 ClearPagePrivate(page);
                 set_page_private(page, 0);
                 page_cache_release(page);
@@ -376,7 +377,6 @@ int btrfs_verify_block_csum(struct btrfs_root *root,
                 buf->flags |= EXTENT_CSUM;
                 return 0;
         }
-
         lock_extent(io_tree, buf->start, end, GFP_NOFS);
 
         if (test_range_bit(io_tree, buf->start, end, EXTENT_CSUM, 1)) {
@@ -384,6 +384,7 @@ int btrfs_verify_block_csum(struct btrfs_root *root,
                 ret = 0;
                 goto out_unlock;
         }
+WARN_ON(buf->flags & EXTENT_CSUM);
 
         ret = csum_tree_block(root, buf, 1);
         set_extent_bits(io_tree, buf->start, end, EXTENT_CSUM, GFP_NOFS);