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

RichardWeiYang · rppt · commit 0910bf0ef85c · 2024-08-11T19:19:00.000+03:00
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
@@ -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

Original file line number	Diff line number	Diff line change
`@@ -997,7 +997,7 @@ void __init __weak arch_task_cache_init(void) { }`
`997`	`997`	`static void __init set_max_threads(unsigned int max_threads_suggested)`
`998`	`998`	`{`
`999`	`999`	`u64 threads;`
`1000`		`- unsigned long nr_pages = PHYS_PFN(memblock_phys_mem_size() - memblock_reserved_size());`
	`1000`	`+ unsigned long nr_pages = memblock_estimated_nr_free_pages();`
`1001`	`1001`
`1002`	`1002`	`/*`
`1003`	`1003`	`* The number of threads shall be limited such that the thread`