Messages in this thread Patch in this message | | | From | sxwjean@me ... | Subject | [PATCH v2 1/6] mm/util: Assign a meaningful value to mmap_legacy_base | Date | Mon, 11 Oct 2021 22:31:45 +0800 |
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From: Xiongwei Song <sxwjean@gmail.com>
Let's assign a value to mmap_legacy_base in case the mmap() of some archs needs mmap_legacy_base, like x86.
Signed-off-by: Xiongwei Song <sxwjean@gmail.com> --- mm/util.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/util.c b/mm/util.c index e58151a61255..40b1a8837c0b 100644 --- a/mm/util.c +++ b/mm/util.c @@ -414,7 +414,8 @@ void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack) random_factor = arch_mmap_rnd(); if (mmap_is_legacy(rlim_stack)) { - mm->mmap_base = TASK_UNMAPPED_BASE + random_factor; + mm->mmap_legacy_base = TASK_UNMAPPED_BASE + random_factor; + mm->mmap_base = mm->mmap_legacy_base; mm->get_unmapped_area = arch_get_unmapped_area; } else { mm->mmap_base = mmap_base(random_factor, rlim_stack); -- 2.30.2
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