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f5a73672d1
linux/fs/nfs
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Neil Brown f5a73672d1 NFS: allow close-to-open cache semantics to apply to root of NFS filesystem 
To obey NFS cache semantics, the client must verify the cached
attributes when a file is opened.  In most cases this is done by a call to
d_validate as one of the last steps in path_walk.

However for the root of a filesystem, d_validate is only ever called
on the mounted-on filesystem (except when the path ends '.' or '..').
So NFS has no chance to validate the attributes.

So, in nfs_opendir, we revalidate the attributes if the opened
directory is the mountpoint.  This may cause double-validation for "."
and ".." lookups, but that is better than missing regular /path/name
lookups completely.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-10 10:20:05 -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_proc.c NFS: Fix the locking in nfs4_callback_getattr 2010-08-06 13:41:39 -04:00
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
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
client.c NFSv41: Cleanup for nfs4_alloc_session. 2010-06-22 13:24:03 -04:00
delegation.c NFS: Clean up the callers of nfs_wb_all() 2010-08-03 22:06:40 -04:00
delegation.h NFSv41: Fix nfs_async_inode_return_delegation() ugliness 2010-06-22 13:24:02 -04:00
dir.c NFS: allow close-to-open cache semantics to apply to root of NFS filesystem 2010-08-10 10:20:05 -04:00
direct.c NFSv4: Ensure that we track the NFSv4 lock state in read/write requests. 2010-07-30 14:41:56 -04:00
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 Merge branch 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2010-08-07 13:19:36 -07:00
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 NFS: Squelch compiler warning 2010-05-14 15:09:31 -04:00
fscache.h NFS: Propagate 'fsc' mount option through automounts 2009-09-23 14:36:39 -04:00
getroot.c nfs4 use mandatory attribute file type in nfs4_get_root 2010-06-22 13:17:43 -04:00
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: Clean up the callers of nfs_wb_all() 2010-08-03 22:06:40 -04:00
internal.h Merge branch 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2010-08-07 13:19:36 -07:00
iostat.h NFS: Squelch compiler warning in nfs_add_server_stats() 2010-05-14 15:09:31 -04:00
Kconfig NFS: NFSv4.1 is no longer a "developer only" feature 2010-08-06 13:41:41 -04:00
Makefile NFS: Add a dns resolver for use with NFSv4 referrals and migration 2009-08-19 18:22:15 -04:00
mount_clnt.c NFS: Fix the mapping of the NFSERR_SERVERFAULT error 2010-02-09 14:29:29 -05:00
namespace.c NFS: Reduce the stack footprint of nfs_follow_mountpoint() 2010-05-14 15:09:22 -04:00
nfs2xdr.c SUNRPC: Move the bound cred to struct rpc_rqst 2010-08-04 08:54:09 -04:00
nfs3acl.c NFS: Reduce stack footprint of nfs3_proc_getacl() and nfs3_proc_setacl() 2010-05-14 15:09:28 -04:00
nfs3proc.c NFS: Reduce the stack footprint of nfs_rmdir 2010-05-14 15:09:26 -04:00
nfs3xdr.c SUNRPC: Move the bound cred to struct rpc_rqst 2010-08-04 08:54:09 -04:00
nfs4_fs.h NFSv4: Ensure the lockowners are labelled using the fl_owner and/or fl_pid 2010-07-30 14:46:10 -04:00
nfs4namespace.c NFSv4: Fix up the documentation for nfs_do_refmount 2010-05-14 15:09:29 -04:00
nfs4proc.c NFS: Fix the NFS users of rpc_restart_call() 2010-08-03 22:06:44 -04:00
nfs4renewd.c NFSv41: Convert the various reboot recovery ops etc to minor version ops 2010-06-22 13:24:02 -04:00
nfs4state.c NFSv4: Ensure the lockowners are labelled using the fl_owner and/or fl_pid 2010-07-30 14:46:10 -04:00
nfs4xdr.c SUNRPC: Move the bound cred to struct rpc_rqst 2010-08-04 08:54:09 -04:00
nfsroot.c nfs: include space for the NUL in root path 2010-07-30 15:33:39 -04:00
pagelist.c NFSv4: Ensure that we track the NFSv4 lock state in read/write requests. 2010-07-30 14:41:56 -04:00
proc.c NFS: Reduce the stack footprint of nfs_proc_symlink() 2010-05-14 15:09:27 -04:00
read.c NFSv4: Ensure that we track the NFSv4 lock state in read/write requests. 2010-07-30 14:41:56 -04:00
super.c NFS: Fix /proc/mount for legacy binary interface 2010-08-06 13:41:39 -04:00
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 NFSv4.1: Make nfs4_setup_sequence take a nfs_server argument 2010-06-22 13:24:02 -04:00
write.c Merge branch 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 2010-08-07 13:19:36 -07:00