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- From b668022f9b8aecf52109c9e0b7e5847054231361 Mon Sep 17 00:00:00 2001
- From: Zdenek Kabelac <zkabelac@redhat.com>
- Date: Fri, 19 Aug 2022 16:15:17 +0200
- Subject: [PATCH] mm: preallocate memory only with glibc
- Use mallinfo() only with glibc.
- Backported from: https://sourceware.org/git/?p=lvm2.git;a=commitdiff;h=8370d117d7ef8a472c95315a3cd085696c90b3be
- Signed-off-by: Simon Rowe <simon.rowe@nutanix.com>
- ---
- lib/mm/memlock.c | 7 ++++++-
- 1 file changed, 6 insertions(+), 1 deletion(-)
- diff --git a/lib/mm/memlock.c b/lib/mm/memlock.c
- index 3d1a3927c..efcc6d91f 100644
- --- a/lib/mm/memlock.c
- +++ b/lib/mm/memlock.c
- @@ -160,7 +160,12 @@ static void _touch_memory(void *mem, size_t size)
-
- static void _allocate_memory(void)
- {
- -#ifndef VALGRIND_POOL
- +#if defined(__GLIBC__) && !defined(VALGRIND_POOL)
- + /* Memory allocation is currently only tested with glibc
- + * for different C libraries, some other mechanisms might be needed
- + * meanwhile let users use lvm2 code without memory preallocation.
- + * Compilation for VALGRIND tracing also goes without preallocation.
- + */
- void *stack_mem;
- struct rlimit limit;
- int i, area = 0, missing = _size_malloc_tmp, max_areas = 32, hblks;
- --
- 2.22.3
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