linux-kernel - Re: [PATCH] Allow SysRq emergency sync to thaw frozen filesystems

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Message-ID: <18022.1232121154@turing-police.cc.vt.edu>
Date:	Fri, 16 Jan 2009 10:52:34 -0500
From:	Valdis.Kletnieks@...edu
To:	Theodore Tso <tytso@....edu>
Cc:	Pavel Machek <pavel@...e.cz>, Eric Sandeen <sandeen@...hat.com>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Takashi Sato <t-sato@...jp.nec.com>
Subject: Re: [PATCH] Allow SysRq emergency sync to thaw frozen filesystems

On Fri, 16 Jan 2009 10:40:26 EST, Theodore Tso said:

> My biggest complaint is that the two operations are largely
> orthogonal.  Emergency sync and unfreeze are two very different
> operations, and while emergency sync is largely harmless, it just
> seems really unclean to combine the two.  For one thing, it'll be
> extremely non-obvious that emergency sync implies unfreeze, and
> changing the sysrq help to say emergency-Sync-and-unfreeze just
> screams "kludge"....

Fair enough - as it is, I usually end up doing sysrq-s, -s, -u, -s, -b
anyhow because each sysrq- does one little thing, adding another little
thing on some other control-meta-alt-cokebottle key *is* probably the
right choice, we still have a few keyscan codes left.. ;)

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