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

[safe/jmp/linux-2.6] / fs / btrfs / file.c

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index f893960..b0352b5 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -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;