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Trond Myklebust 0df5dd4aae NFSv4: fix delegated locking 
Arnaud Giersch reports that NFSv4 locking is broken when we hold a
delegation since commit 8e469ebd6d (NFSv4:
Don't allow posix locking against servers that don't support it).

According to Arnaud, the lock succeeds the first time he opens the file
(since we cannot do a delegated open) but then fails after we start using
delegated opens.

The following patch fixes it by ensuring that locking behaviour is
governed by a per-filesystem capability flag that is initially set, but
gets cleared if the server ever returns an OPEN without the
NFS4_OPEN_RESULT_LOCKTYPE_POSIX flag being set.

Reported-by: Arnaud Giersch <arnaud.giersch@iut-bm.univ-fcomte.fr>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
 		2010-04-12 07:55:15 -04:00
..
Kconfig Remove EXPERIMENTAL from NFS_FSCACHE 2010-02-26 17:22:35 -08:00
Makefile NFS: Add a dns resolver for use with NFSv4 referrals and migration 2009-08-19 18:22:15 -04:00
cache_lib.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
cache_lib.h NFS: Add a dns resolver for use with NFSv4 referrals and migration 2009-08-19 18:22:15 -04:00
callback.c SUNRPC: Bury "#ifdef IPV6" in svc_create_xprt() 2010-01-26 17:56:43 -05:00
callback.h nfs41: implement cb_recall_slot 2010-02-10 08:30:59 -05:00
callback_proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
callback_xdr.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
client.c NFSv4: fix delegated locking 2010-04-12 07:55:15 -04:00
delegation.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
delegation.h NFSv4: Don't ignore the NFS_INO_REVAL_FORCED flag in nfs_revalidate_inode() 2010-03-10 15:21:44 -05:00
dir.c NFSv4: Fall back to ordinary lookup if nfs4_atomic_open() returns EISDIR 2010-04-09 19:08:16 -04:00
direct.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dns_resolve.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
dns_resolve.h NFS: Add a dns resolver for use with NFSv4 referrals and migration 2009-08-19 18:22:15 -04:00
file.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
fscache-index.c NFS: Add read context retention for FS-Cache to call back with 2009-04-03 16:42:44 +01:00
fscache.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
fscache.h NFS: Propagate 'fsc' mount option through automounts 2009-09-23 14:36:39 -04:00
getroot.c headers: mnt_namespace.h redux 2009-07-08 09:31:56 -07:00
idmap.c SUNRPC: Replace rpc_client->cl_dentry and cl_mnt, with a cl_path 2009-08-09 15:14:24 -04:00
inode.c NFS: Fix the mode calculation in nfs_find_open_context 2010-04-09 19:08:16 -04:00
internal.h pass writeback_control to ->write_inode 2010-03-05 13:25:52 -05:00
iostat.h percpu: add __percpu sparse annotations to fs 2010-02-17 11:17:38 +09:00
mount_clnt.c NFS: Fix the mapping of the NFSERR_SERVERFAULT error 2010-02-09 14:29:29 -05:00
namespace.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfs2xdr.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfs3acl.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfs3proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfs3xdr.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfs4_fs.h nfs41: implement cb_recall_slot 2010-02-10 08:30:59 -05:00
nfs4namespace.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfs4proc.c NFSv4: fix delegated locking 2010-04-12 07:55:15 -04:00
nfs4renewd.c nfs: prevent backlogging of renewd requests 2010-03-02 12:44:07 -05:00
nfs4state.c NFSv4.1: Various fixes to the sequence flag error handling 2010-03-02 13:06:21 -05:00
nfs4xdr.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
nfsroot.c NFS: Update MNT and MNT3 reply decoding functions 2009-06-17 18:02:13 -07:00
pagelist.c NFS: Avoid a deadlock in nfs_release_page 2010-03-11 09:19:35 -05:00
proc.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
read.c NFS: Fix up the declaration of nfs4_restart_rpc when NFSv4 not configured 2009-12-07 09:00:24 -05:00
super.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
symlink.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
sysctl.c NFS: Avoid warnings when CONFIG_NFS_V4=n 2010-01-26 15:42:11 -05:00
unlink.c NFS: Fix up the declaration of nfs4_restart_rpc when NFSv4 not configured 2009-12-07 09:00:24 -05:00
write.c NFS: Ensure that the WRITE and COMMIT RPC calls are always uninterruptible 2010-04-09 19:54:50 -04:00