From: Matthew Wilcox <willy@infradead.org>
To: Liu Shixin <liushixin2@huawei.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Chengming Zhou <chengming.zhou@linux.dev>,
Kefeng Wang <wangkefeng.wang@huawei.com>,
Nanyong Sun <sunnanyong@huawei.com>,
Muchun Song <muchun.song@linux.dev>,
Qi Zheng <zhengqi.arch@bytedance.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Yang Shi <yang@os.amperecomputing.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: khugepaged: fix call hpage_collapse_scan_file() for anonymous vma
Date: Thu, 9 Jan 2025 13:40:42 +0000 [thread overview]
Message-ID: <Z3_R2qWcvWxm6T83@casper.infradead.org> (raw)
In-Reply-To: <20250109070059.369257-1-liushixin2@huawei.com>
On Thu, Jan 09, 2025 at 03:00:59PM +0800, Liu Shixin wrote:
> Add vma_is_anonymous() check to make such vma be processed by
> hpage_collapse_scan_pmd().
Wouldn't it be better to replace the vm_file check with
vma_is_anonymous()? ie:
> - if (IS_ENABLED(CONFIG_SHMEM) && vma->vm_file) {
> + if (IS_ENABLED(CONFIG_SHMEM) && vma->vm_file &&
> + !vma_is_anonymous(vma)) {
+ if (IS_ENABLED(CONFIG_SHMEM) &&
+ !vma_is_anonymous(vma)) {
next prev parent reply other threads:[~2025-01-09 13:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-01-09 7:00 Liu Shixin
2025-01-09 13:40 ` Matthew Wilcox [this message]
2025-01-10 2:29 ` Liu Shixin
2025-01-09 17:00 ` Yang Shi
2025-01-10 2:08 ` Baolin Wang
2025-01-10 2:32 ` Liu Shixin
2025-01-10 4:31 ` Matthew Wilcox
2025-01-10 18:04 ` Yang Shi
2025-01-10 19:01 ` Matthew Wilcox
2025-01-10 19:40 ` Yang Shi
2025-01-11 3:54 ` Liu Shixin
2025-01-13 18:51 ` Yang Shi
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