linux-kernel - Re: [PATCH v5 03/13] mm/shmem: Support memfile

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20220412131254.GF8013@chaop.bj.intel.com>
Date:   Tue, 12 Apr 2022 21:12:54 +0800
From:   Chao Peng <chao.p.peng@...ux.intel.com>
To:     "Kirill A. Shutemov" <kirill@...temov.name>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        linux-api@...r.kernel.org, qemu-devel@...gnu.org,
        Wanpeng Li <wanpengli@...cent.com>, jun.nakajima@...el.com,
        david@...hat.com, "J . Bruce Fields" <bfields@...ldses.org>,
        dave.hansen@...el.com, "H . Peter Anvin" <hpa@...or.com>,
        ak@...ux.intel.com, Jonathan Corbet <corbet@....net>,
        Joerg Roedel <joro@...tes.org>, x86@...nel.org,
        Hugh Dickins <hughd@...gle.com>,
        Steven Price <steven.price@....com>,
        Ingo Molnar <mingo@...hat.com>,
        "Maciej S . Szmigiero" <mail@...iej.szmigiero.name>,
        Borislav Petkov <bp@...en8.de>, luto@...nel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Jim Mattson <jmattson@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Jeff Layton <jlayton@...nel.org>,
        Yu Zhang <yu.c.zhang@...ux.intel.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vishal Annapurve <vannapurve@...gle.com>,
        Mike Rapoport <rppt@...nel.org>
Subject: Re: [PATCH v5 03/13] mm/shmem: Support memfile_notifier

On Mon, Apr 11, 2022 at 06:26:47PM +0300, Kirill A. Shutemov wrote:
> On Thu, Mar 10, 2022 at 10:09:01PM +0800, Chao Peng wrote:
> > diff --git a/mm/shmem.c b/mm/shmem.c
> > index 9b31a7056009..7b43e274c9a2 100644
> > --- a/mm/shmem.c
> > +++ b/mm/shmem.c
> > @@ -903,6 +903,28 @@ static struct folio *shmem_get_partial_folio(struct inode *inode, pgoff_t index)
> >  	return page ? page_folio(page) : NULL;
> >  }
> >  
> > +static void notify_fallocate(struct inode *inode, pgoff_t start, pgoff_t end)
> > +{
> > +#ifdef CONFIG_MEMFILE_NOTIFIER
> > +	struct shmem_inode_info *info = SHMEM_I(inode);
> > +
> > +	memfile_notifier_fallocate(&info->memfile_notifiers, start, end);
> > +#endif
> 
> All these #ifdefs look ugly. Could you provide dummy memfile_* for
> !MEMFILE_NOTIFIER case?
Sure.

Chao
> 
> -- 
>  Kirill A. Shutemov