From: David Hildenbrand <david@redhat.com>
To: Gavin Shan <gshan@redhat.com>, linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, osalvador@suse.de,
gregkh@linuxfoundation.org, rafael@kernel.org, dakr@kernel.org,
akpm@linux-foundation.org
Subject: Re: [PATCH 1/2] drivers/base/memory: Simplify add_boot_memory_block()
Date: Fri, 14 Feb 2025 08:53:48 +0100 [thread overview]
Message-ID: <bfad9746-689e-4275-9d68-f8d062526412@redhat.com> (raw)
In-Reply-To: <20250214063504.617906-2-gshan@redhat.com>
On 14.02.25 07:35, Gavin Shan wrote:
> It's unnecessary to keep the variable @section_count in the function
> because the device for the specific memory block will be added if
> any of its memory section is present. The variable @section_count
> records the number of present memory sections in the specific memory
> block, which isn't needed.
>
> Simplify the function by dropping the variable @section_count. No
> functional change intended.
>
> Signed-off-by: Gavin Shan <gshan@redhat.com>
> ---
> drivers/base/memory.c | 15 +++++++--------
> 1 file changed, 7 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/base/memory.c b/drivers/base/memory.c
> index 348c5dbbfa68..208b9b544012 100644
> --- a/drivers/base/memory.c
> +++ b/drivers/base/memory.c
> @@ -822,18 +822,17 @@ static int add_memory_block(unsigned long block_id, unsigned long state,
>
> static int __init add_boot_memory_block(unsigned long base_section_nr)
> {
> - int section_count = 0;
> unsigned long nr;
>
> for (nr = base_section_nr; nr < base_section_nr + sections_per_block;
> - nr++)
> - if (present_section_nr(nr))
> - section_count++;
> + nr++) {
> + if (present_section_nr(nr)) {
> + return add_memory_block(memory_block_id(base_section_nr),
> + MEM_ONLINE, NULL, NULL);
> + }
Superfluous set of braces for the if statement.
Not sure I count this while thing here as a "simplifcation" -- the code
is IMHO easier to read without the nested return in the loop body.
No strong opinion, though.
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2025-02-14 7:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-14 6:35 [PATCH 0/2] drivers/base/memory: Two cleanups Gavin Shan
2025-02-14 6:35 ` [PATCH 1/2] drivers/base/memory: Simplify add_boot_memory_block() Gavin Shan
2025-02-14 7:53 ` David Hildenbrand [this message]
2025-02-14 23:48 ` Gavin Shan
2025-02-14 22:57 ` Andrew Morton
2025-02-14 23:45 ` Gavin Shan
2025-02-14 6:35 ` [PATCH 2/2] drivers/base/memory: Correct the field name in the header Gavin Shan
2025-02-14 7:54 ` David Hildenbrand
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