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Commit 39b5637f authored by Yan's avatar Yan Committed by Chris Mason
Browse files

Btrfs: Fix "no csum found for inode" issue. 



A few codes were not properly updated for changes of extent map.  This
may be the causes of "no csum found for inode" issue.

Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
parent 9069218d

fs/btrfs/extent_io.c

+3 −2
Original line number Diff line number Diff line
@@ -2417,12 +2417,13 @@ int try_release_extent_mapping(struct extent_map_tree *map, 
	u64 end = start + PAGE_CACHE_SIZE - 1;

	u64 orig_start = start;

	int ret = 1;



	if ((mask & __GFP_WAIT) &&

	    page->mapping->host->i_size > 16 * 1024 * 1024) {

		u64 len;

		while (start <= end) {

			len = end - start + 1;

			spin_lock(&map->lock);

			em = lookup_extent_mapping(map, start, end);

			em = lookup_extent_mapping(map, start, len);

			if (!em || IS_ERR(em)) {

				spin_unlock(&map->lock);

				break;

fs/btrfs/file.c

+4 −1
Original line number Diff line number Diff line
@@ -357,10 +357,13 @@ int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end) 
{

	struct extent_map *em;

	struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;

	u64 len = end - start + 1;



	if (end == (u64)-1)

		len = (u64)-1;

	while(1) {

		spin_lock(&em_tree->lock);

		em = lookup_extent_mapping(em_tree, start, end);

		em = lookup_extent_mapping(em_tree, start, len);

		if (!em) {

			spin_unlock(&em_tree->lock);

			break;