All of lore.kernel.org
 help / color / mirror / Atom feed
From: Miklos Szeredi <miklos@szeredi.hu>
To: Chengguang Xu <cgxu519@mykernel.net>
Cc: linux-unionfs <linux-unionfs@vger.kernel.org>
Subject: Re: [PATCH] ovl: check VM_DENYWRITE mappings in copy-up
Date: Thu, 8 Apr 2021 13:29:55 +0200	[thread overview]
Message-ID: <CAJfpegt5vVAtik=SXL26G0Tjh8yzZ6DvD6wLtfbXTinqpkxVeg@mail.gmail.com> (raw)
In-Reply-To: <178b13dbf0a.c5d5924718458.7870418673694557579@mykernel.net>

On Thu, Apr 8, 2021 at 1:28 PM Chengguang Xu <cgxu519@mykernel.net> wrote:
>
>  ---- 在 星期四, 2021-04-08 19:20:42 Chengguang Xu <cgxu519@mykernel.net> 撰写 ----
>  > In overlayfs copy-up, if open flag has O_TRUNC then upper
>  > file will truncate to zero size, in this case we should check
>  > VM_DENYWRITE mappings to keep compatibility with other filesystems.

Can you provide a test case for the bug that this is fixing?

Thanks,
Miklos

  reply	other threads:[~2021-04-08 11:30 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-08 11:20 [PATCH] ovl: check VM_DENYWRITE mappings in copy-up Chengguang Xu
2021-04-08 11:28 ` 回复:[PATCH] " Chengguang Xu
2021-04-08 11:29   ` Miklos Szeredi [this message]
2021-04-08 11:40     ` [PATCH] " Chengguang Xu
2021-04-08 15:03       ` Miklos Szeredi
2021-04-13  3:26         ` Chengguang Xu
2021-04-13  8:47           ` Miklos Szeredi
2021-04-20 11:14             ` Chengguang Xu

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='CAJfpegt5vVAtik=SXL26G0Tjh8yzZ6DvD6wLtfbXTinqpkxVeg@mail.gmail.com' \
    --to=miklos@szeredi.hu \
    --cc=cgxu519@mykernel.net \
    --cc=linux-unionfs@vger.kernel.org \
    /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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.