1 files changed, 8 insertions, 4 deletions

diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index b41a7d7e20f0..f96c40a90e2e 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -1307,10 +1307,14 @@ ext3_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
                         if (!goal_in_my_reservation(&my_rsv->rsv_window,
                                                         grp_goal, group, sb))
                                 grp_goal = -1;
-                } else if (grp_goal > 0 &&
-                          (my_rsv->rsv_end-grp_goal+1) < *count)
-                        try_to_extend_reservation(my_rsv, sb,
-                                        *count-my_rsv->rsv_end + grp_goal - 1);
+                } else if (grp_goal > 0) {
+                        int curr = my_rsv->rsv_end -
+                                        (grp_goal + group_first_block) + 1;
+
+                        if (curr < *count)
+                                try_to_extend_reservation(my_rsv, sb,
+                                                        *count - curr);
+                }
 
                 if ((my_rsv->rsv_start > group_last_block) ||
                                 (my_rsv->rsv_end < group_first_block)) {