From: Mike Kravetz <mike.kravetz@oracle.com>
To: Baolin Wang <baolin.wang@linux.alibaba.com>, akpm@linux-foundation.org
Cc: mhocko@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/4] hugetlb: Remove redundant validation in has_same_uncharge_info()
Date: Fri, 22 Oct 2021 14:04:23 -0700 [thread overview]
Message-ID: <db6aaee8-f020-c93b-1c96-de9fcdc57e2d@oracle.com> (raw)
In-Reply-To: <97fc68d3f8d34f63c204645e10d7a718997e50b7.1634797639.git.baolin.wang@linux.alibaba.com>
On 10/20/21 11:31 PM, Baolin Wang wrote:
> The callers of has_same_uncharge_info() has accessed the original file_region
> and new file_region, and they are impossible to be NULL now. So we can remove
> the file_region validation in has_same_uncharge_info() to simplify the code.
>
> Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
> ---
> mm/hugetlb.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
Thanks!
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
--
Mike Kravetz
>
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index 8902b07..5922629 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -333,8 +333,7 @@ static bool has_same_uncharge_info(struct file_region *rg,
> struct file_region *org)
> {
> #ifdef CONFIG_CGROUP_HUGETLB
> - return rg && org &&
> - rg->reservation_counter == org->reservation_counter &&
> + return rg->reservation_counter == org->reservation_counter &&
> rg->css == org->css;
>
> #else
>
next prev parent reply other threads:[~2021-10-22 21:04 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-21 6:31 [PATCH 0/4] Some cleanups and improvements for hugetlb Baolin Wang
2021-10-21 6:31 ` [PATCH 1/4] hugetlb_cgroup: Remove unused hugetlb_cgroup_from_counter macro Baolin Wang
2021-10-22 20:16 ` Mike Kravetz
2021-10-21 6:31 ` [PATCH 2/4] hugetlb: Replace the obsolete hugetlb_instantiation_mutex in the comments Baolin Wang
2021-10-22 20:44 ` Mike Kravetz
2021-10-21 6:31 ` [PATCH 3/4] hugetlb: Remove redundant validation in has_same_uncharge_info() Baolin Wang
2021-10-22 21:04 ` Mike Kravetz [this message]
2021-10-21 6:31 ` [PATCH 4/4] hugetlb: Remove redundant VM_BUG_ON() in add_reservation_in_range() Baolin Wang
2021-10-22 23:57 ` Mike Kravetz
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