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From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 3 Jul 2007 18:30:56 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Subject: cvs commit: src/sys/nfsclient nfs_bio.c
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jhb         2007-07-03 18:30:55 UTC

  FreeBSD src repository

  Modified files:
    sys/nfsclient        nfs_bio.c 
  Log:
  Fix up NFS client write error handling. Errors are split into
  recoverable and unrecoverable. For the former, we redirty the
  buffer and hang onto it for future retries. For the latter (eg.
  ESTALE), we discard the buffer and return the error back to the
  user on the next syscall. This fixes a number of vfs panics and
  fixes having a large number of dirty buffers (that cannot be
  written out and reclaimed) from hanging around. Thanks to ups@
  for discussions on this issue.
  
  Reported by:    kris, Kai, others
  Approved by:    re (kensmith)
  
  Revision  Changes    Path
  1.164     +15 -0     src/sys/nfsclient/nfs_bio.c