diff --git a/[refs] b/[refs]
index d693ee152c81..ef622db218c9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 83d435dd6e24b17955f91480f633bb39f0a7c2b4
+refs/heads/master: 797f6a684f28dbb00f9e9719315574e344fcbf53
diff --git a/trunk/Documentation/kdump/kdump.txt b/trunk/Documentation/kdump/kdump.txt
index 13f1aa09b938..9c7fd988e299 100644
--- a/trunk/Documentation/kdump/kdump.txt
+++ b/trunk/Documentation/kdump/kdump.txt
@@ -297,6 +297,7 @@ Boot into System Kernel
    On ia64, 256M@256M is a generous value that typically works.
    The region may be automatically placed on ia64, see the
    dump-capture kernel config option notes above.
+   If use sparse memory, the size should be rounded to GRANULE boundaries.
 
    On s390x, typically use "crashkernel=xxM". The value of xx is dependent
    on the memory consumption of the kdump system. In general this is not