diff options
author | Chris Mason <chris.mason@oracle.com> | 2008-04-10 00:28:12 +0400 |
---|---|---|
committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 19:04:01 +0400 |
commit | 728131d8e40c2a47c59ca91a806299c4708029f9 (patch) | |
tree | 4b6023689d6f77fdf785d815a2ca986e73aeff1a /fs/btrfs/extent_io.c | |
parent | cea9e4452ebaf18dd0951e90dc84d82a5dee40b2 (diff) | |
download | linux-728131d8e40c2a47c59ca91a806299c4708029f9.tar.xz |
Btrfs: Add additional debugging for metadata checksum failures
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_io.c')
-rw-r--r-- | fs/btrfs/extent_io.c | 54 |
1 files changed, 51 insertions, 3 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 776c33f1e6fe..13cc2360e375 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2592,6 +2592,33 @@ static inline struct page *extent_buffer_page(struct extent_buffer *eb, 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 @@ EXPORT_SYMBOL(set_extent_buffer_uptodate); 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 @@ int read_extent_buffer_pages(struct extent_io_tree *tree, unsigned long num_pages; struct bio *bio = NULL; - if (eb->flags & EXTENT_UPTODATE) return 0; |