* Re: [PATCH/RFC] s390: Hypervisor File System
[not found] ` <1145637630.6884.7.camel@localhost>
@ 2006-04-25 14:04 ` Pekka Enberg
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From: Pekka Enberg @ 2006-04-25 14:04 UTC (permalink / raw)
To: schwidefsky; +Cc: Michael Holzheu, linux-kernel, mschwid2, linux-fsdevel
Hi Martin,
On Fri, 2006-04-21 at 18:38 +0300, Pekka Enberg wrote:
> > The update-on-write to special file thing seems bit strange to me. What
> > if two processes ask for it at the same time?
On Fri, 2006-04-21 at 18:40 +0200, Martin Schwidefsky wrote:
> Yes, we had that discussion as well. Any sensible suggestion how to do
> it in a more clever way would be greatly appreciated. We haven't found
> something better so far.
The only way I can think of is via s_ops->remount_fs. That's bit safer
anyway, as sb->s_lock protects us from concurrent updates. I am cc'ing
fsdevel to see if they can come up with a better suggestion.
Pekka
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