OpenAFS CVS Commit: openafs by shadow

[cvs@GRAND.CENTRAL.ORG]

Update of /cvs/openafs
In directory GRAND.CENTRAL.ORG:/data/sb/openafs

Modified Files:
	acinclude.m4 
Log Message:
DELTA linux26-defer-cred-changing-20090511
AUTHOR sxw@inf.ed.ac.uk
LICENSE IPL10
FIXES 124737

Newer Linux kernels differentiate between the real and effective
credentials of a process, and prevent a process's credentials from being 
change when the effective credentials have been set to a different value.
When AFS notices a keyring PAG exists but no group-based PAG does, the
attempt to rectify this, if done in a VFS call (which changes effective creds)
triggers this issue. We defer the change to the groups to avoid it.


--- DELTA config follows ---
linux26-defer-cred-changing-20090511 openafs/acinclude.m4 1.272 1.273