lkml.org 
[lkml]   [2023]   [Jan]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] mm/page_alloc: invert logic for early page initialisation checks
From


On 1/5/23 00:48, Mike Rapoport wrote:
> From: "Mike Rapoport (IBM)" <rppt@kernel.org>
>
> Rename early_page_uninitialised() to early_page_initialised() and invert
> its logic to make the code more readable.
>
> Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
> ---

LGTM

Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>

> mm/page_alloc.c | 16 ++++++++--------
> 1 file changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 0745aedebb37..a881f2d42b2c 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -443,15 +443,15 @@ static inline bool deferred_pages_enabled(void)
> return static_branch_unlikely(&deferred_pages);
> }
>
> -/* Returns true if the struct page for the pfn is uninitialised */
> -static inline bool __meminit early_page_uninitialised(unsigned long pfn)
> +/* Returns true if the struct page for the pfn is initialised */
> +static inline bool __meminit early_page_initialised(unsigned long pfn)
> {
> int nid = early_pfn_to_nid(pfn);
>
> if (node_online(nid) && pfn >= NODE_DATA(nid)->first_deferred_pfn)
> - return true;
> + return false;
>
> - return false;
> + return true;
> }
>
> /*
> @@ -498,9 +498,9 @@ static inline bool deferred_pages_enabled(void)
> return false;
> }
>
> -static inline bool early_page_uninitialised(unsigned long pfn)
> +static inline bool early_page_initialised(unsigned long pfn)
> {
> - return false;
> + return true;
> }
>
> static inline bool defer_init(int nid, unsigned long pfn, unsigned long end_pfn)
> @@ -1641,7 +1641,7 @@ static void __meminit init_reserved_page(unsigned long pfn)
> pg_data_t *pgdat;
> int nid, zid;
>
> - if (!early_page_uninitialised(pfn))
> + if (early_page_initialised(pfn))
> return;
>
> nid = early_pfn_to_nid(pfn);
> @@ -1804,7 +1804,7 @@ int __meminit early_pfn_to_nid(unsigned long pfn)
> void __init memblock_free_pages(struct page *page, unsigned long pfn,
> unsigned int order)
> {
> - if (early_page_uninitialised(pfn))
> + if (!early_page_initialised(pfn))
> return;
> if (!kmsan_memblock_free_pages(page, order)) {
> /* KMSAN will take care of these pages. */

\
 
 \ /
  Last update: 2023-03-26 23:28    [W:0.058 / U:0.424 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site