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: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index fcae999..9262ab3 100644 (file)
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -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;

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;