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| author | Ting Liu <liuting.0x7c00@bytedance.com> | 2022-01-14 14:09:28 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-15 16:30:31 +0200 |
| commit | cab0a7c115546a4865fb7439558af9077a569574 (patch) | |
| tree | 103efc6cd003f560fcffbd2e7cbf9a56eeb54c70 | |
| parent | 0b8f0d870020dbd7037bfacbb73a9b3213470f90 (diff) | |
| download | linux-stable-cab0a7c115546a4865fb7439558af9077a569574.tar.gz linux-stable-cab0a7c115546a4865fb7439558af9077a569574.tar.bz2 linux-stable-cab0a7c115546a4865fb7439558af9077a569574.zip | |
mm: make some vars and functions static or __init
"page_idle_ops" as a global var, but its scope of use within this
document. So it should be static.
"page_ext_ops" is a var used in the kernel initial phase. And other
functions are aslo used in the kernel initial phase. So they should be
__init or __initdata to reclaim memory.
Link: https://lkml.kernel.org/r/20211217095023.67293-1-liuting.0x7c00@bytedance.com
Signed-off-by: Ting Liu <liuting.0x7c00@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | include/linux/page_idle.h | 1 | ||||
| -rw-r--r-- | mm/page_ext.c | 4 | ||||
| -rw-r--r-- | mm/page_owner.c | 4 |
3 files changed, 4 insertions, 5 deletions
diff --git a/include/linux/page_idle.h b/include/linux/page_idle.h index 83abf95e9fa7..4663dfed1293 100644 --- a/include/linux/page_idle.h +++ b/include/linux/page_idle.h @@ -13,7 +13,6 @@ * If there is not enough space to store Idle and Young bits in page flags, use * page ext flags instead. */ -extern struct page_ext_operations page_idle_ops; static inline bool folio_test_young(struct folio *folio) { diff --git a/mm/page_ext.c b/mm/page_ext.c index bee3240604dc..2e66d934d63f 100644 --- a/mm/page_ext.c +++ b/mm/page_ext.c @@ -64,12 +64,12 @@ static bool need_page_idle(void) { return true; } -struct page_ext_operations page_idle_ops = { +static struct page_ext_operations page_idle_ops __initdata = { .need = need_page_idle, }; #endif -static struct page_ext_operations *page_ext_ops[] = { +static struct page_ext_operations *page_ext_ops[] __initdata = { #ifdef CONFIG_PAGE_OWNER &page_owner_ops, #endif diff --git a/mm/page_owner.c b/mm/page_owner.c index 4f924957ce7a..5eea061bb1e5 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -46,7 +46,7 @@ static int __init early_page_owner_param(char *buf) } early_param("page_owner", early_page_owner_param); -static bool need_page_owner(void) +static __init bool need_page_owner(void) { return page_owner_enabled; } @@ -75,7 +75,7 @@ static noinline void register_early_stack(void) early_handle = create_dummy_stack(); } -static void init_page_owner(void) +static __init void init_page_owner(void) { if (!page_owner_enabled) return; |