From: "Kani, Toshi" <toshi.kani@hpe.com>
To: "jmoyer@redhat.com" <jmoyer@redhat.com>
Cc: "linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>
Subject: Re: open sets ext4_da_aops for DAX existing files
Date: Mon, 10 Sep 2018 14:21:52 +0000 [thread overview]
Message-ID: <bd07c88ae9626ea1a66fb100113296d9d4033988.camel@hpe.com> (raw)
In-Reply-To: <x49zhwpfr6n.fsf@segfault.boston.devel.redhat.com>
On Mon, 2018-09-10 at 08:54 -0400, Jeff Moyer wrote:
> "Kani, Toshi" <toshi.kani@hpe.com> writes:
>
> > I noticed that both ext4_da_aops and ext4_dax_aops are used on DAX
> > mounted ext4 files. Looking at open() path:
>
> Eek. How did you notice this?
I tested sync path on DAX files to see if it flushes processor cache
properly. Then I noticed that it sometimes does, but sometimes doesn't.
Looking into function traces, I realized that ext4_dax_writepages() and
ext4_writepages() are called depending on their file status.
-Toshi
_______________________________________________
Linux-nvdimm mailing list
Linux-nvdimm@lists.01.org
https://lists.01.org/mailman/listinfo/linux-nvdimm
next prev parent reply other threads:[~2018-09-10 14:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-07 21:23 open sets ext4_da_aops for DAX existing files Kani, Toshi
2018-09-10 12:54 ` Jeff Moyer
2018-09-10 14:21 ` Kani, Toshi [this message]
2018-09-10 14:26 ` Dan Williams
2018-09-10 14:29 ` Jan Kara
2018-09-10 14:51 ` Kani, Toshi
2018-09-10 17:58 ` Elliott, Robert (Persistent Memory)
2018-09-11 15:27 ` Jan Kara
2018-09-11 16:34 ` Kani, Toshi
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=bd07c88ae9626ea1a66fb100113296d9d4033988.camel@hpe.com \
--to=toshi.kani@hpe.com \
--cc=jmoyer@redhat.com \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-nvdimm@lists.01.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).