[bisect] NFS regression breaks X

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Original bug report, with hardware and software info:
http://lkml.org/lkml/2007/5/8/667

I love bisect :) bisect has identified the following commit as the one that causes my GNOME login to die, within 10 seconds of logging in:

	commit 2bea90d43a050bbc4021d44e59beb34f384438db
	Author: Chuck Lever <[email protected]>
	Date:   Thu Mar 29 16:47:53 2007 -0400

	SUNRPC: RPC buffer size estimates are too large

100% reproducible, verified regression. My home directory is an NFSv4 mount, and the problem appears on my client workstation, so this makes some sense:
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
pretzel:/ on /g type nfs4 (rw,noatime,proto=tcp,addr=10.10.10.1)



As an aside, let me express the hope that the NFS developers develop better patch creation methods. My bisect compile repeatedly died at

  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  CHK     include/linux/compile.h
fs/nfs/pagelist.c:239: error: conflicting types for ‘nfs_pageio_init’
include/linux/nfs_page.h:80: error: previous declaration of ‘nfs_pageio_init’ was here
make[2]: *** [fs/nfs/pagelist.o] Error 1
make[1]: *** [fs/nfs] Error 2
make: *** [fs] Error 2

which indicates that someone on the NFS team did not create wholly-contained patches when submitted to the kernel. Build breakage should not be fixed in a later commit (unless the breakage already went upstream), because -- as we see here -- it breaks bisection.

	Jeff, occasionally guilty of same, and trying to reform


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