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From: Andrew Morton <akpm@digeo.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC] how to fix is_local_disk()?
Date: Sun, 4 May 2003 00:30:21 -0700	[thread overview]
Message-ID: <20030504003021.077e8819.akpm@digeo.com> (raw)
In-Reply-To: <20030504090003.A7285@lst.de>

Christoph Hellwig <hch@lst.de> wrote:
>
> In drivers/char/sysrq.c we have this nice piece of code:
> 

Suggest you chainsaw the whole lot and simply do a wakeup_bdflush(0) from
interrupt context.

The only functional change I can see with this is that it could cause pdflush
to get stuck if there are dead NFS/SMBFS/etc mounts.

But if that happens, we need to fix it anyway.  Those filesystems should
avoid getting stuck if called with writeback_control.sync_mode != WB_SYNC_ALL,
especially if current_is_pdflush() returns true.


  reply	other threads:[~2003-05-04  7:16 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-05-04  7:00 [RFC] how to fix is_local_disk()? Christoph Hellwig
2003-05-04  7:30 ` Andrew Morton [this message]
2003-05-04  7:53   ` Christoph Hellwig
2003-05-04  8:00   ` Andrew Morton
2003-05-04 17:10     ` Christoph Hellwig
2003-05-04 21:05       ` Andrew Morton
2003-05-05  7:41         ` viro

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