Btrfs: Add some extra debugging around file data checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 614176e..3ebbc05 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -261,6 +261,10 @@
found:
csum_result = btrfs_csum_data(root, data, csum_result, len);
btrfs_csum_final(csum_result, (char *)&csum_result);
+ if (csum_result == 0) {
+ printk("csum result is 0 for inode %lu offset %Lu\n", inode->i_ino, offset);
+ }
+
write_extent_buffer(leaf, &csum_result, (unsigned long)item,
BTRFS_CRC32_SIZE);
btrfs_mark_buffer_dirty(path->nodes[0]);