From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Matthew Wilcox <willy@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, <linux-mm@kvack.org>,
<linux-fsdevel@vger.kernel.org>
Subject: Re: [PATCH 2/2] mm: filemap: batch mm counter updating in filemap_map_pages()
Date: Fri, 12 Apr 2024 11:49:37 +0800 [thread overview]
Message-ID: <4549178a-0168-4878-b4cd-db750d3ff6ac@huawei.com> (raw)
In-Reply-To: <Zhin5gNVk8NHjxPP@casper.infradead.org>
On 2024/4/12 11:17, Matthew Wilcox wrote:
> On Fri, Apr 12, 2024 at 10:57:04AM +0800, Kefeng Wang wrote:
>> } while ((folio = next_uptodate_folio(&xas, mapping, end_pgoff)) != NULL);
>> +
>> + add_mm_counter(vma->vm_mm, mm_counter_file(folio), rss);
>
> Can't folio be NULL here?
indeed, I need get mm counter type before while
>
next prev parent reply other threads:[~2024-04-12 3:49 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-12 2:57 [PATCH v2 0/2] mm: batch mm counter updating in filemap_map_pages() Kefeng Wang
2024-04-12 2:57 ` [PATCH 1/2] mm: move mm counter updating out of set_pte_range() Kefeng Wang
2024-04-12 2:33 ` Kefeng Wang
2024-04-12 2:57 ` [PATCH 2/2] mm: filemap: batch mm counter updating in filemap_map_pages() Kefeng Wang
2024-04-12 3:17 ` Matthew Wilcox
2024-04-12 3:49 ` Kefeng Wang [this message]
-- strict thread matches above, loose matches on Subject: below --
2024-04-11 13:09 [PATCH 0/2] mm: " Kefeng Wang
2024-04-11 13:09 ` [PATCH 2/2] mm: filemap: " Kefeng Wang
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