1 files changed, 7 insertions, 1 deletions

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index c4d6f19faf37..8a59f7ba30e6 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -148,6 +148,7 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
 {
         struct ext4_inode_info *ei = EXT4_I(inode);
         ext4_fsblk_t bg_start;
+        ext4_fsblk_t last_block;
         ext4_grpblk_t colour;
         int depth;
 
@@ -169,8 +170,13 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
         /* OK. use inode's group */
         bg_start = (ei->i_block_group * EXT4_BLOCKS_PER_GROUP(inode->i_sb)) +
                 le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_first_data_block);
-        colour = (current->pid % 16) *
+        last_block = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es) - 1;
+
+        if (bg_start + EXT4_BLOCKS_PER_GROUP(inode->i_sb) <= last_block)
+                colour = (current->pid % 16) *
                         (EXT4_BLOCKS_PER_GROUP(inode->i_sb) / 16);
+        else
+                colour = (current->pid % 16) * ((last_block - bg_start) / 16);
         return bg_start + colour + block;
 }