2 files changed, 14 insertions, 2 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;
 }
 
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index d3c6f58a9def..34f3eb615fd5 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -403,6 +403,7 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind)
         __le32 *start = ind->bh ? (__le32*) ind->bh->b_data : ei->i_data;
         __le32 *p;
         ext4_fsblk_t bg_start;
+        ext4_fsblk_t last_block;
         ext4_grpblk_t colour;
 
         /* Try to find previous block */
@@ -420,8 +421,13 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind)
          * into the same cylinder group then.
          */
         bg_start = ext4_group_first_block_no(inode->i_sb, ei->i_block_group);
-        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;
 }