From: Zdenek Kabelac <zkabelac@redhat.com>
Date: Tue, 11 Oct 2011 09:13:39 +0000 (+0000)
Subject: Reduce preallocated stack size
X-Git-Tag: v2_02_91~431
X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=57f4dfc653906c8f57a7f9950dfc290e7df157a7;p=lvm2.git

Reduce preallocated stack size

Go with just 64KiB for stack.

Closer inspection should be made, whether we actually need to play with
settings at all.

Since default stack size is 8MB and gets mapped via page locking thus,
it seems there is no big help with preallocation of stack to some value.
---

diff --git a/doc/example.conf.in b/doc/example.conf.in
index d38f90ea2..3c08d1242 100644
--- a/doc/example.conf.in
+++ b/doc/example.conf.in
@@ -481,7 +481,8 @@ activation {
     missing_stripe_filler = "error"
 
     # How much stack (in KB) to reserve for use while devices suspended
-    reserved_stack = 256
+    # Prior to version 2.02.89 this used to be set to 256KB
+    reserved_stack = 64
 
     # How much memory (in KB) to reserve for use while devices suspended
     reserved_memory = 8192
diff --git a/lib/config/defaults.h b/lib/config/defaults.h
index 16b524db9..0583fd2be 100644
--- a/lib/config/defaults.h
+++ b/lib/config/defaults.h
@@ -116,7 +116,7 @@
 #ifdef DEVMAPPER_SUPPORT
 #  define DEFAULT_ACTIVATION 1
 #  define DEFAULT_RESERVED_MEMORY 8192
-#  define DEFAULT_RESERVED_STACK 256
+#  define DEFAULT_RESERVED_STACK 64 /* KB */
 #  define DEFAULT_PROCESS_PRIORITY -18
 #else
 #  define DEFAULT_ACTIVATION 0