Btrfs: Add some extra debugging around file data checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 026bc9c..4845512 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -318,6 +318,7 @@
if (ret == -ENOENT || ret == -EFBIG)
ret = 0;
csum = 0;
+ printk("no csum found for inode %lu start %Lu\n", inode->i_ino, start);
goto out;
}
read_extent_buffer(path->nodes[0], &csum, (unsigned long)item,
@@ -336,7 +337,7 @@
struct inode *inode = page->mapping->host;
struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
char *kaddr;
- u64 private;
+ u64 private = ~(u32)0;
int ret;
struct btrfs_root *root = BTRFS_I(inode)->root;
u32 csum = ~(u32)0;
@@ -362,8 +363,9 @@
return 0;
zeroit:
- printk("btrfs csum failed ino %lu off %llu\n",
- page->mapping->host->i_ino, (unsigned long long)start);
+ printk("btrfs csum failed ino %lu off %llu csum %u private %Lu\n",
+ page->mapping->host->i_ino, (unsigned long long)start, csum,
+ private);
memset(kaddr + offset, 1, end - start + 1);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_IRQ0);