mm: larger stack guard gap, between vmas

[linux-block.git] / Documentation / admin-guide / kernel-parameters.txt

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 0f5c3b4347c6f94a82385f193e76bc99dba19db5..7737ab5d04b2941621df23b7fc83a4cdba36e5ba 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3811,6 +3811,13 @@
                        expediting.  Set to zero to disable automatic
                        expediting.
 
+       stack_guard_gap=        [MM]
+                       override the default stack gap protection. The value
+                       is in page units and it defines how many pages prior
+                       to (for stacks growing down) resp. after (for stacks
+                       growing up) the main stack are reserved for no other
+                       mapping. Default value is 256 pages.
+
        stacktrace      [FTRACE]
                        Enabled the stack tracer on boot up.