From: Wei Yang <richard.weiyang@gmail.com>
Date: Thu, 8 Aug 2024 00:14:14 +0000 (+0000)
Subject: kernel/fork.c: get estimated free pages by memblock api
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=0910bf0ef85c5404aac94394cb31e076e4eb03f1;p=users%2Fwilly%2Flinux.git

kernel/fork.c: get estimated free pages by memblock api

Instead of getting estimated free pages from memblock directly, we have
introduced an API, memblock_estimated_nr_free_pages(), which is more
friendly for users.

Just replace it with new API, no functional change.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Mike Rapoport <rppt@kernel.org>
CC: David Hildenbrand <david@redhat.com>
CC: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20240808001415.6298-2-richard.weiyang@gmail.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
---

diff --git a/kernel/fork.c b/kernel/fork.c
index cc760491f201..d99f148d818b 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -997,7 +997,7 @@ void __init __weak arch_task_cache_init(void) { }
 static void __init set_max_threads(unsigned int max_threads_suggested)
 {
 	u64 threads;
-	unsigned long nr_pages = PHYS_PFN(memblock_phys_mem_size() - memblock_reserved_size());
+	unsigned long nr_pages = memblock_estimated_nr_free_pages();
 
 	/*
 	 * The number of threads shall be limited such that the thread