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[S390] reduce miminum gap between stack and mmap_base

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Reduce minimum gap between stack and mmap_base to 32MB. That way there
is a bit more space for heap and mmap for tight 31 bit address spaces.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2011-01-12 09:55:23 +01:00 committed by Martin Schwidefsky
parent 9046e401e7
commit 9e78a13bfb
1 changed files with 2 additions and 2 deletions
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4
arch/s390/mm/mmap.c
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@ -42,9 +42,9 @@ static unsigned long stack_maxrandom_size(void)
/*
* Top of mmap area (just below the process stack).
*
* Leave an at least ~128 MB hole.
* Leave at least a ~32 MB hole.
*/
#define MIN_GAP (128*1024*1024)
#define MIN_GAP (32*1024*1024)
#define MAX_GAP (STACK_TOP/6*5)
static inline unsigned long mmap_base(void)