Btrfs: Add additional debugging for metadata checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 776c33f..13cc236 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2592,6 +2592,33 @@
return p;
}
+int invalidate_extent_lru(struct extent_io_tree *tree, u64 start,
+ unsigned long len)
+{
+ struct list_head *lru = &tree->buffer_lru;
+ struct list_head *cur = lru->next;
+ struct extent_buffer *eb;
+ int found = 0;
+
+ spin_lock(&tree->lru_lock);
+ if (list_empty(lru))
+ goto out;
+
+ do {
+ eb = list_entry(cur, struct extent_buffer, lru);
+ if (eb->start <= start && eb->start + eb->len > start) {
+ eb->flags &= ~EXTENT_UPTODATE;
+ }
+ if (eb->start == start) {
+ eb->flags &= ~EXTENT_CSUM;
+ }
+ cur = cur->next;
+ } while (cur != lru);
+out:
+ spin_unlock(&tree->lru_lock);
+ return found;
+}
+
static struct extent_buffer *__alloc_extent_buffer(struct extent_io_tree *tree,
u64 start,
unsigned long len,
@@ -2909,10 +2936,32 @@
int extent_buffer_uptodate(struct extent_io_tree *tree,
struct extent_buffer *eb)
{
+ int ret = 0;
+ int ret2;
+ int num_pages;
+ int i;
+ struct page *page;
+ int pg_uptodate = 1;
+
if (eb->flags & EXTENT_UPTODATE)
- return 1;
- return test_range_bit(tree, eb->start, eb->start + eb->len - 1,
+ ret = 1;
+
+ ret2 = test_range_bit(tree, eb->start, eb->start + eb->len - 1,
EXTENT_UPTODATE, 1);
+
+ num_pages = num_extent_pages(eb->start, eb->len);
+ for (i = 0; i < num_pages; i++) {
+ page = extent_buffer_page(eb, i);
+ if (!PageUptodate(page)) {
+ pg_uptodate = 0;
+ break;
+ }
+ }
+ if ((ret || ret2) && !pg_uptodate) {
+printk("uptodate error2 eb %Lu ret %d ret2 %d pg_uptodate %d\n", eb->start, ret, ret2, pg_uptodate);
+ WARN_ON(1);
+ }
+ return (ret || ret2);
}
EXPORT_SYMBOL(extent_buffer_uptodate);
@@ -2929,7 +2978,6 @@
unsigned long num_pages;
struct bio *bio = NULL;
-
if (eb->flags & EXTENT_UPTODATE)
return 0;