Rick Macklem 7af1242a34 PR# 165923 reported intermittent write failures for dirty ... memory mapped pages being written back on an NFS mount. Since any thread can call VOP_PUTPAGES() to write back a dirty page, the credentials of that thread may not have write access to the file on an NFS server. (Often the uid is 0, which may be mapped to "nobody" in the NFS server.) Although there is no completely correct fix for this (NFS servers check access on every write RPC instead of at open/mmap time), this patch avoids the common cases by holding onto a credential that recently opened the file for writing and uses that credential for the write RPCs being done by VOP_PUTPAGES() for both NFS clients. Tested by: Joel Ray Holveck (joelh at juniper.net) PR: kern/165923 Reviewed by: kib MFC after: 2 weeks		2012-05-12 12:02:51 +00:00
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nfs_bio.c	PR# 165923 reported intermittent write failures for dirty	2012-05-12 12:02:51 +00:00
nfs_kdtrace.c
nfs_krpc.c
nfs_nfsiod.c
nfs_node.c	PR# 165923 reported intermittent write failures for dirty	2012-05-12 12:02:51 +00:00
nfs_subs.c	Fix mount mutex handling missed in r234386.	2012-05-10 21:38:48 +00:00
nfs_vfsops.c	Fix mount mutex handling missed in r234386.	2012-05-05 09:34:35 +00:00
nfs_vnops.c	PR# 165923 reported intermittent write failures for dirty	2012-05-12 12:02:51 +00:00
nfs.h
nfsargs.h
nfsm_subs.h
nfsmount.h
nfsnode.h	PR# 165923 reported intermittent write failures for dirty	2012-05-12 12:02:51 +00:00
nfsstats.h
nlminfo.h