lkml.org 
[lkml]   [2011]   [May]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH resend] mm: get rid of CONFIG_STACK_GROWSUP || CONFIG_IA64
Hi Andrew,
the patch bellow probably got lost in the huge "parisc crashes with slub"
thread triggered by my earlier clean up in this area so I am resending
it standalone.
---
From 2e79c7e73a39a09389a84a8f37eb2a2f2f2859f5 Mon Sep 17 00:00:00 2001
From: Michal Hocko <mhocko@suse.cz>
Date: Tue, 19 Apr 2011 11:11:41 +0200
Subject: [PATCH] mm: get rid of CONFIG_STACK_GROWSUP || CONFIG_IA64

IA64 needs some trickery for Register Backing Store so we have to
export expand_stack_upwards for it even though the architecture expands
its stack downwards normally.
We have defined VM_GROWSUP which is defined only for the above
configuration so let's use it everywhere rather than hardcoded
CONFIG_STACK_GROWSUP || CONFIG_IA64

Signed-off-by: Michal Hocko <mhocko@suse.cz>
---
mm/mmap.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/mmap.c b/mm/mmap.c
index 29c68b0..3ff9edf 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1726,7 +1726,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
return 0;
}

-#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64)
+#if VM_GROWSUP
/*
* PA-RISC uses this for its stack; IA64 for its Register Backing Store.
* vma is the last one with address > vma->vm_end. Have to extend vma.
@@ -1777,7 +1777,7 @@ int expand_stack_upwards(struct vm_area_struct *vma, unsigned long address)
khugepaged_enter_vma_merge(vma);
return error;
}
-#endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
+#endif /* VM_GROWSUP */

/*
* vma is the first one with address < vma->vm_start. Have to extend vma.
--
1.7.4.4
--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic


\
 
 \ /
  Last update: 2011-05-03 16:13    [W:0.041 / U:0.776 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site