From: Dave Chinner <david@fromorbit.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Waiman Long <longman@redhat.com>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Vincent Guittot <vincent.guittot@linaro.org>,
linux-xfs@vger.kernel.org, linux-kernel@vger.kernel.org,
Qian Cai <cai@lca.pw>, Eric Sandeen <sandeen@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 2/2] xfs: Fix false positive lockdep warning with sb_internal & fs_reclaim
Date: Tue, 16 Jun 2020 09:28:02 +1000 [thread overview]
Message-ID: <20200615232802.GX2040@dread.disaster.area> (raw)
In-Reply-To: <20200615164351.GF11255@magnolia>
On Mon, Jun 15, 2020 at 09:43:51AM -0700, Darrick J. Wong wrote:
> Also: Why not set PF_MEMALLOC_NOFS at the start of the freeze call
> chain?
Because there's no guarantee that we are always going to do this
final work in the freeze syscall context? i.e. the state is specific
to the context in which we are running the transaction, not the
task context it is running in...
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
prev parent reply other threads:[~2020-06-15 23:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-15 16:08 [PATCH 0/2] sched, xfs: Add PF_MEMALLOC_NOLOCKDEP to fix lockdep problem in xfs Waiman Long
2020-06-15 16:08 ` [PATCH 1/2] sched: Add PF_MEMALLOC_NOLOCKDEP flag Waiman Long
2020-06-15 16:08 ` [PATCH 2/2] xfs: Fix false positive lockdep warning with sb_internal & fs_reclaim Waiman Long
2020-06-15 16:43 ` Darrick J. Wong
2020-06-15 20:53 ` Waiman Long
2020-06-16 16:29 ` Darrick J. Wong
2020-06-15 23:28 ` Dave Chinner [this message]
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=20200615232802.GX2040@dread.disaster.area \
--to=david@fromorbit.com \
--cc=akpm@linux-foundation.org \
--cc=cai@lca.pw \
--cc=darrick.wong@oracle.com \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-xfs@vger.kernel.org \
--cc=longman@redhat.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=sandeen@redhat.com \
--cc=vincent.guittot@linaro.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).