From: Matthew Wilcox <willy@infradead.org>
To: Ye Liu <ye.liu@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Ye Liu <liuye@kylinos.cn>,
Vlastimil Babka <vbabka@kernel.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/4] mm/vmstat: simplify folio stat APIs
Date: Wed, 15 Apr 2026 04:59:36 +0100 [thread overview]
Message-ID: <ad8NKAxUAP0RYP5h@casper.infradead.org> (raw)
In-Reply-To: <6c0ab55e-a687-4ad1-b18e-b4ca97305a44@linux.dev>
On Wed, Apr 15, 2026 at 08:47:24AM +0800, Ye Liu wrote:
> Thank you for your feedback, Matthew. I acknowledge that this change may
> introduce additional calls to folio_nr_pages() in some cases where the
> value was previously computed once and reused. However, the new
> add_folio/sub_folio functions provide clearer semantics, explicitly
> indicating that we're accounting for the entire folio rather than
> potentially partial pages. The overhead of recomputing folio_nr_pages()
> is minimal in most scenarios, and the improved readability and reduced
> argument passing outweigh this concern.
I disagree.
next prev parent reply other threads:[~2026-04-15 3:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-14 9:15 [PATCH 0/4] mm/vmstat: simplify folio stat APIs Ye Liu
2026-04-14 9:15 ` [PATCH 1/4] mm/vmstat: use node_stat_add_folio/sub_folio for folio_nr_pages operations Ye Liu
2026-04-14 17:52 ` David Hildenbrand (Arm)
2026-04-15 0:48 ` Ye Liu
2026-04-14 9:15 ` [PATCH 2/4] mm/vmstat: use zone_stat_add_folio/sub_folio " Ye Liu
2026-04-14 9:15 ` [PATCH 3/4] mm/vmstat: remove unused __node_stat_* wrappers Ye Liu
2026-04-14 14:59 ` Joshua Hahn
2026-04-15 0:50 ` Ye Liu
2026-04-15 2:29 ` Joshua Hahn
2026-04-15 5:51 ` Ye Liu
2026-04-14 9:15 ` [PATCH 4/4] mm/vmstat: remove unused __zone_stat_* wrappers Ye Liu
2026-04-14 13:18 ` [PATCH 0/4] mm/vmstat: simplify folio stat APIs Matthew Wilcox
2026-04-15 0:47 ` Ye Liu
2026-04-15 3:59 ` Matthew Wilcox [this message]
2026-04-15 5:54 ` Ye Liu
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