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Date: Fri, 11 May 2001 10:36:07 -0400 (EDT)
From: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
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To: Kirk McKusick <mckusick@mckusick.com>
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Subject: Re: cvs commit: src/sys/ufs/ffs fs.h softdep.h ffs_softdep.c ...
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<<On Thu, 10 May 2001 19:27:42 -0700, Kirk McKusick <mckusick@mckusick.com> said:

> At the point that you know that there are no blocks currently available,
> you are deep in the allocation code holding a vnode locked.

For cases where a system call was interrupted by a signal and needs to
be restarted, an ``unwind and retry'' error (ERESTART) was invented
for internel kernel use.  It seems to me that the same sort of
approach (ECANTBLOCKNOW?) ought to work for this case as well.

-GAWollman



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