From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>,
Linux-MM <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Johannes Weiner <hannes@cmpxchg.org>,
Steven Whitehouse <swhiteho@redhat.com>
Subject: Re: [PATCH] mm/filemap: do not allocate cache pages beyond end of file at read
Date: Wed, 30 Oct 2019 09:50:37 +0300 [thread overview]
Message-ID: <20191030065037.o3q6usc5vo3woif6@box> (raw)
In-Reply-To: <CAHk-=who0HS=NT8U7vFDT7er_CD7+ZreRJMxjYrRXs5G6dbpyw@mail.gmail.com>
On Tue, Oct 29, 2019 at 05:52:05PM +0100, Linus Torvalds wrote:
> But NFS, for example, has open/close consistency, so the metadata
> revalidation is at open() time, not at read time.
I don't know much about filesystems, but can't size of file change after
the open() under network filesystem? Revlidation on read looks like an
requirement anyway, no?
--
Kirill A. Shutemov
next prev parent reply other threads:[~2019-10-30 6:50 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-28 9:59 [PATCH] mm/filemap: do not allocate cache pages beyond end of file at read Konstantin Khlebnikov
2019-10-28 12:39 ` Linus Torvalds
2019-10-28 12:42 ` Kirill A. Shutemov
2019-10-28 12:47 ` Linus Torvalds
2019-10-28 12:57 ` Kirill A. Shutemov
2019-10-29 14:25 ` Konstantin Khlebnikov
2019-10-29 16:52 ` Linus Torvalds
2019-10-30 6:50 ` Kirill A. Shutemov [this message]
2019-10-30 7:02 ` Linus Torvalds
2019-10-30 10:34 ` Steven Whitehouse
2019-10-30 10:54 ` Linus Torvalds
2019-10-31 11:40 ` Steven Whitehouse
2019-11-22 23:59 ` Andreas Grünbacher
2019-11-25 10:52 ` Steven Whitehouse
2019-11-25 17:05 ` Linus Torvalds
2019-11-27 15:41 ` Steven Whitehouse
2019-11-27 16:29 ` Andreas Gruenbacher
2019-11-27 17:29 ` Linus Torvalds
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