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s390/mmap: increase stack/mmap gap to 128MB

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This basically reverts commit 9e78a13bfb ("[S390] reduce miminum
gap between stack and mmap_base"). 32MB is not enough space
between stack and mmap for some programs. Given that compat
task aren't common these days, lets revert back to 128MB.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Sven Schnelle 2022-04-06 08:01:24 +02:00 committed by Heiko Carstens
parent 2004b57cde
commit f2f47d0ef7
1 changed files with 2 additions and 2 deletions
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4
arch/s390/mm/mmap.c
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@ -58,9 +58,9 @@ static inline unsigned long mmap_base(unsigned long rnd,
/*
* Top of mmap area (just below the process stack).
* Leave at least a ~32 MB hole.
* Leave at least a ~128 MB hole.
*/
gap_min = 32 * 1024 * 1024UL;
gap_min = SZ_128M;
gap_max = (STACK_TOP / 6) * 5;
if (gap < gap_min)