From: "Pankaj Raghav (Samsung)" <kernel@pankajraghav.com>
To: Kiryl Shutsemau <kirill@shutemov.name>
Cc: David Hildenbrand <david@redhat.com>,
Suren Baghdasaryan <surenb@google.com>,
Ryan Roberts <ryan.roberts@arm.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Vlastimil Babka <vbabka@suse.cz>, Zi Yan <ziy@nvidia.com>,
Mike Rapoport <rppt@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Michal Hocko <mhocko@suse.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Nico Pache <npache@redhat.com>, Dev Jain <dev.jain@arm.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Jens Axboe <axboe@kernel.dk>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
willy@infradead.org, Ritesh Harjani <ritesh.list@gmail.com>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
"Darrick J . Wong" <djwong@kernel.org>,
mcgrof@kernel.org, gost.dev@samsung.com, hch@lst.de,
Pankaj Raghav <p.raghav@samsung.com>
Subject: Re: [PATCH v3 0/5] add persistent huge zero folio support
Date: Mon, 11 Aug 2025 12:19:51 +0200 [thread overview]
Message-ID: <p6ciia5cm5re4paau3tqhcdk3cdjmnwjuc2l5rv6ztb6kcgvyp@2g6ei7okvuw5> (raw)
In-Reply-To: <rr6kkjxizlpruc46hjnx72jl5625rsw3mcpkc5h4bvtp3wbmjf@g45yhep3ogjo>
> > Sorry, RFC v2 I think. It got a bit confusing with series names/versions.
>
> Well, my worry is that 2M can be a high tax for smaller machines.
> Compile-time might be cleaner, but it has downsides.
>
> It is also not clear if these users actually need physical HZP or virtual
> is enough. Virtual is cheap.
We do need physical as the main usecase was for block IO where we will
be DMAing. The main reason I was seeing an improvement in perf was we
were sending bigger chunks of memory in a single bio_vec instead of
using multiple bio_vec.
--
Pankaj
next prev parent reply other threads:[~2025-08-11 10:20 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-11 8:41 Pankaj Raghav (Samsung)
2025-08-11 8:41 ` [PATCH v3 1/5] mm: rename huge_zero_page to huge_zero_folio Pankaj Raghav (Samsung)
2025-08-11 8:41 ` [PATCH v3 2/5] mm: rename MMF_HUGE_ZERO_PAGE to MMF_HUGE_ZERO_FOLIO Pankaj Raghav (Samsung)
2025-08-11 8:41 ` [PATCH v3 3/5] mm: add persistent huge zero folio Pankaj Raghav (Samsung)
2025-08-11 8:41 ` [PATCH v3 4/5] mm: add largest_zero_folio() routine Pankaj Raghav (Samsung)
2025-08-11 8:41 ` [PATCH v3 5/5] block: use largest_zero_folio in __blkdev_issue_zero_pages() Pankaj Raghav (Samsung)
2025-08-11 9:35 ` Pankaj Raghav
2025-08-11 9:44 ` David Hildenbrand
2025-08-11 9:43 ` [PATCH v3 0/5] add persistent huge zero folio support Kiryl Shutsemau
2025-08-11 9:49 ` David Hildenbrand
2025-08-11 9:52 ` David Hildenbrand
2025-08-11 10:07 ` Kiryl Shutsemau
2025-08-11 10:09 ` Lorenzo Stoakes
2025-08-11 10:17 ` Kiryl Shutsemau
2025-08-11 10:21 ` David Hildenbrand
2025-08-11 10:36 ` Kiryl Shutsemau
2025-08-11 10:38 ` Lorenzo Stoakes
2025-08-11 10:43 ` David Hildenbrand
2025-08-18 6:57 ` Hannes Reinecke
2025-08-11 10:19 ` Pankaj Raghav (Samsung) [this message]
2025-08-11 10:12 ` Pankaj Raghav (Samsung)
2025-08-12 3:52 ` Ritesh Harjani
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=p6ciia5cm5re4paau3tqhcdk3cdjmnwjuc2l5rv6ztb6kcgvyp@2g6ei7okvuw5 \
--to=kernel@pankajraghav.com \
--cc=Liam.Howlett@oracle.com \
--cc=akpm@linux-foundation.org \
--cc=axboe@kernel.dk \
--cc=baolin.wang@linux.alibaba.com \
--cc=dave.hansen@linux.intel.com \
--cc=david@redhat.com \
--cc=dev.jain@arm.com \
--cc=djwong@kernel.org \
--cc=gost.dev@samsung.com \
--cc=hch@lst.de \
--cc=kirill@shutemov.name \
--cc=linux-block@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=mcgrof@kernel.org \
--cc=mhocko@suse.com \
--cc=npache@redhat.com \
--cc=p.raghav@samsung.com \
--cc=ritesh.list@gmail.com \
--cc=rppt@kernel.org \
--cc=ryan.roberts@arm.com \
--cc=surenb@google.com \
--cc=tglx@linutronix.de \
--cc=vbabka@suse.cz \
--cc=willy@infradead.org \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox