Subject: Re: wd, disk write cache, sync cache, and softdep.
To: Bill Studenmund <>
From: Steven M. Bellovin <>
List: tech-kern
Date: 12/16/2004 13:35:43
In message <>, Bill Studenmund writes:

>I think it'd be better to add a "Force Unit Access" attribute to writes,
>and have them set when we need the write to bypass the cache. Among other
>things, this action will directly map to SCSI command semantics (i.e. you
>fix the problem for both SCSI and IDE drives).

But under what conditions should higher layers set this flag?

		--Steve Bellovin,