fs: ext4: Problem with ext4load and sparse files

[project/bcm63xx/u-boot.git] / fs / ext4 / ext4_common.c

diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index 59ad6c8f8c188562c2274a05618668fe152a2303..feffbfa9a9ebbd61b3c83fe69005f9a5ddaeaab0 100644 (file)
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -1547,8 +1547,12 @@ static struct ext4_extent_header *ext4fs_get_extent_block
                                break;
                } while (fileblock >= le32_to_cpu(index[i].ei_block));
 
-               if (--i < 0)
-                       return NULL;
+               /*
+                * If first logical block number is higher than requested fileblock,
+                * it is a sparse file. This is handled on upper layer.
+                */
+               if (i > 0)
+                       i--;
 
                block = le16_to_cpu(index[i].ei_leaf_hi);
                block = (block << 32) + le32_to_cpu(index[i].ei_leaf_lo);