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mm: page_alloc: move is_check_pages_enabled() into page_alloc.c

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The is_check_pages_enabled() only used in page_alloc.c, move it into
page_alloc.c, also use it in free_tail_page_prepare().

Link: https://lkml.kernel.org/r/20230516063821.121844-14-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang
2023-05-16 14:38:21 +08:00
committed by Andrew Morton
parent e95d372c4c
commit ecbb490d8e
2 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
mm/internal.h
View File

@@ -208,11 +208,6 @@ extern char * const zone_names[MAX_NR_ZONES];
/* perform sanity checks on struct pages being allocated or freed */ /* perform sanity checks on struct pages being allocated or freed */
DECLARE_STATIC_KEY_MAYBE(CONFIG_DEBUG_VM, check_pages_enabled); DECLARE_STATIC_KEY_MAYBE(CONFIG_DEBUG_VM, check_pages_enabled);
static inline bool is_check_pages_enabled(void)
{
return static_branch_unlikely(&check_pages_enabled);
}
extern int min_free_kbytes; extern int min_free_kbytes;
void setup_per_zone_wmarks(void); void setup_per_zone_wmarks(void);

7
mm/page_alloc.c
View File

@@ -983,6 +983,11 @@ static inline bool free_page_is_bad(struct page *page)
return true; return true;
} }
static inline bool is_check_pages_enabled(void)
{
return static_branch_unlikely(&check_pages_enabled);
}
static int free_tail_page_prepare(struct page *head_page, struct page *page) static int free_tail_page_prepare(struct page *head_page, struct page *page)
{ {
struct folio *folio = (struct folio *)head_page; struct folio *folio = (struct folio *)head_page;
@@ -994,7 +999,7 @@ static int free_tail_page_prepare(struct page *head_page, struct page *page)
*/ */
BUILD_BUG_ON((unsigned long)LIST_POISON1 & 1); BUILD_BUG_ON((unsigned long)LIST_POISON1 & 1);
if (!static_branch_unlikely(&check_pages_enabled)) { if (!is_check_pages_enabled()) {
ret = 0; ret = 0;
goto out; goto out;
} }