Frank van Maarseveen [Mon, 9 Jul 2007 20:25:29 +0000 (22:25 +0200)]
NLM: fix source address of callback to client
Use the destination address of the original NLM request as the
source address in callbacks to the client.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Frank van Maarseveen [Mon, 9 Jul 2007 20:23:35 +0000 (22:23 +0200)]
SUNRPC client: add interface for binding to a local address
In addition to binding to a local privileged port the NFS client should
allow binding to a specific local address. This is used by the server
for callbacks. The patch adds the necessary interface.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Frank van Maarseveen [Mon, 9 Jul 2007 20:21:39 +0000 (22:21 +0200)]
SUNRPC server: record the destination address of a request
Save the destination address of an incoming request over TCP like is
done already for UDP. It is necessary later for callbacks by the server.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Frank van Maarseveen [Sun, 8 Jul 2007 11:08:54 +0000 (13:08 +0200)]
SUNRPC: cleanup transport creation argument passing
Cleanup argument passing to functions for creating an RPC transport.
Signed-off-by: Frank van Maarseveen <frankvm@frankvm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Fri, 6 Jul 2007 14:53:21 +0000 (10:53 -0400)]
NFSv4: Make the NFS state model work with the nosharedcache mount option
Consider the case where the user has mounted the remote filesystem
server:/foo on the two local directories /bar and /baz using the
nosharedcache mount option. The files /bar/file and /baz/file are
represented by different inodes in the local namespace, but refer to the
same file /foo/file on the server.
Consider the case where a process opens both /bar/file and /baz/file, then
closes /bar/file: because the nfs4_state is not shared between /bar/file
and /baz/file, the kernel will see that the nfs4_state for /bar/file is no
longer referenced, so it will send off a CLOSE rpc call. Unless the
open_owners differ, then that CLOSE call will invalidate the open state on
/baz/file too.
Conclusion: we cannot share open state owners between two different
non-shared mount instances of the same filesystem.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 16 May 2007 20:53:28 +0000 (16:53 -0400)]
NFS: Error when mounting the same filesystem with different options
Unless the user sets the NFS_MOUNT_NOSHAREDCACHE mount flag, we should
return EBUSY if the filesystem is already mounted on a superblock that
has set conflicting mount options.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 16 May 2007 20:53:28 +0000 (16:53 -0400)]
NFS: Add the mount option "nosharecache"
Prior to David Howell's mount changes in 2.6.18, users who mounted
different directories which happened to be from the same filesystem on the
server would get different super blocks, and hence could choose different
mount options. As long as there were no hard linked files that crossed from
one subtree to another, this was quite safe.
Post the changes, if the two directories are on the same filesystem (have
the same 'fsid'), they will share the same super block, and hence the same
mount options.
Add a flag to allow users to elect not to share the NFS super block with
another mount point, even if the fsids are the same. This will allow
users to set different mount options for the two different super blocks, as
was previously possible. It is still up to the user to ensure that there
are no cache coherency issues when doing this, however the default
behaviour will be to share super blocks whenever two paths result in
the same fsid.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:59 +0000 (12:13 -0400)]
NFS: Add support for mounting NFSv4 file systems with string options
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:54 +0000 (12:13 -0400)]
NFS: Add final pieces to support in-kernel mount option parsing
Hook in final components required for supporting in-kernel mount option
parsing for NFSv2 and NFSv3 mounts.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:49 +0000 (12:13 -0400)]
NFS: Introduce generic mount client API
For NFSv2 and v3 mounts, the first step is to contact the server's MOUNTD
and request the file handle for the root of the mounted share. Add a
function to the NFS client that handles this operation.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:44 +0000 (12:13 -0400)]
NFS: Add enums and match tables for mount option parsing
This generic infrastructure works for both NFS and NFSv4 mounts.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:38 +0000 (12:13 -0400)]
NFS: Improve debugging output in NFS in-kernel mount client
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:33 +0000 (12:13 -0400)]
NFS: Clean up in-kernel NFS mount
Clean up white space and coding conventions.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:27 +0000 (12:13 -0400)]
NFS: Remake nfsroot_mount as a permanent part of NFS client
In preparation for supporting NFSv2 and NFSv3 mount option handling in the
kernel NFS client, convert mount_clnt.c to be a permanent part of the NFS
client, instead of built only when CONFIG_ROOT_NFS is enabled.
In addition, we also replace the "struct sockaddr_in *" argument with
something more generic, to help support IPv6 at some later point.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:22 +0000 (12:13 -0400)]
SUNRPC: Add a convenient default for the hostname when calling rpc_create()
A couple of callers just use a stringified IP address for the rpc client's
hostname. Move the logic for constructing this into rpc_create(), so it can
be shared.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:17 +0000 (12:13 -0400)]
SUNRPC: Rename rpcb_getport to be consistent with new rpcb_getport_sync name
Clean up, for consistency. Rename rpcb_getport as rpcb_getport_async, to
match the naming scheme of rpcb_getport_sync.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:12 +0000 (12:13 -0400)]
SUNRPC: Rename rpcb_getport_external routine
In preparation for handling NFS mount option parsing in the kernel,
rename rpcb_getport_external as rpcb_get_port_sync, and make it available
always (instead of only when CONFIG_ROOT_NFS is enabled).
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:07 +0000 (12:13 -0400)]
SUNRPC: Allow rpcbind requests to be interrupted by a signal.
This allows NFS mount requests and RPC re-binding to be interruptible if the
server isn't responding.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:13:01 +0000 (12:13 -0400)]
NFS: Introduce nfs4_validate_mount_options
Refactor NFSv4 mount processing to break out mount data validation
in the same way it's broken out in the NFSv2/v3 mount path.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:56 +0000 (12:12 -0400)]
NFS: Clean up nfs_validate_mount_data
Move error handling code out of the main code path. The switch statement
was also improperly indented, according to Documentation/CodingStyle. This
prepares nfs_validate_mount_data for the addition of option string parsing.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:51 +0000 (12:12 -0400)]
NFS: Add a new NFS debugging flag just for mount processing
Note to self: fix up /usr/sbin/rpcdebug too
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:46 +0000 (12:12 -0400)]
NFS: Clean-up: Refactor IP address sanity checks in NFS client
NFS and NFSv4 mounts can now share server address sanity checking. And, it
provides an easy mechanism for adding IPv6 address checking at some later
point.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: Aurelien Charbon <aurelien.charbon@ext.bull.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:40 +0000 (12:12 -0400)]
NFS: Clean-up: fix a compiler warning in fs/nfs/super.c
/home/cel/linux/fs/nfs/super.c: In function 'nfs_pseudoflavour_to_name':
/home/cel/linux/fs/nfs/super.c:270: warning: comparison between signed and unsigned
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:35 +0000 (12:12 -0400)]
NFS: Clean up error handling in nfs_get_sb
The error return logic in nfs_get_sb now matches nfs4_get_sb, and is more maintainable.
A subsequent patch will take advantage of this simplification.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:30 +0000 (12:12 -0400)]
NFS: Clean-up: Replace nfs_copy_user_string with strndup_user
The new string utility function strndup_user can be used instead of
nfs_copy_user_string, eliminating an unnecessary duplication of function.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:24 +0000 (12:12 -0400)]
NFS: Clean-up: Define macros for maximum host and export path name lengths
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:19 +0000 (12:12 -0400)]
NFS: Clean-up: use correct type when converting NFS blocks to local blocks
inode->i_blocks is a blkcnt_t these days, which can be a u64 or unsigned
long, depending on the setting of CONFIG_LSF.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Sun, 1 Jul 2007 16:12:14 +0000 (12:12 -0400)]
NFS: Clean up nfs_size_to_loff_t()
Use the same file size limit that lockd uses.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 9 Jul 2007 14:45:42 +0000 (10:45 -0400)]
NFSv4: Fix up stateid locking...
We really don't need to grab both the state->so_owner and the
inode->i_lock.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 9 Jul 2007 01:04:15 +0000 (21:04 -0400)]
NFSv4: Clean up the callers of nfs4_open_recover_helper()
Rely on nfs4_try_open_cached() when appropriate.
Also fix an RCU violation in _nfs4_do_open_reclaim()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 8 Jul 2007 18:11:36 +0000 (14:11 -0400)]
NFSv4: Don't call OPEN if we already have an open stateid for a file
If we already have a stateid with the correct open mode for a given file,
then we can reuse that stateid instead of re-issuing an OPEN call without
violating the close-to-open caching semantics.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 5 Jul 2007 23:02:21 +0000 (19:02 -0400)]
NFSv4: Check for the existence of a delegation in nfs4_open_prepare()
We should not be calling open() on an inode that has a delegation unless
we're doing a reclaim.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 7 Jul 2007 17:19:59 +0000 (13:19 -0400)]
NFSv4: Clean up _nfs4_proc_open()
Use a flag instead of the 'data->rpc_status = -ENOMEM hack.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 7 Jul 2007 12:04:47 +0000 (08:04 -0400)]
NFSv4: Allow nfs4_opendata_to_nfs4_state to return errors.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 8 Jul 2007 20:49:11 +0000 (16:49 -0400)]
NFSv4: Improve the debugging of bad sequence id errors...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 5 Jul 2007 22:07:55 +0000 (18:07 -0400)]
NFSv4: Always use the delegation if we have one
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 8 Jul 2007 20:19:56 +0000 (16:19 -0400)]
NFSv4: Clean up confirmation of sequence ids...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 3 Jul 2007 20:10:55 +0000 (16:10 -0400)]
NFSv4: Defer inode revalidation when setting up a delegation
Currently we force a synchronous call to __nfs_revalidate_inode() in
nfs_inode_set_delegation(). This not only ensures that we cannot call
nfs_inode_set_delegation from an asynchronous context, but it also slows
down any call to open().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Fri, 6 Jul 2007 19:12:04 +0000 (15:12 -0400)]
NFSv4: Use RCU to protect delegations
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Fri, 6 Jul 2007 19:10:43 +0000 (15:10 -0400)]
NFSv4: Support recalling delegations by stateid part 2
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 5 Jul 2007 18:55:18 +0000 (14:55 -0400)]
NFSv4: Support recalling delegations by stateid
There appear to be some rogue servers out there that issue multiple
delegations with different stateids for the same file. Ensure that when we
return delegations, we do so on a per-stateid basis rather than a per-file
basis.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 4 Jul 2007 03:48:13 +0000 (23:48 -0400)]
NFSv4: Fix up a bug in nfs4_open_recover()
Don't clobber the delegation info...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 3 Jul 2007 20:42:45 +0000 (16:42 -0400)]
NFSv4: set the delegation in nfs4_opendata_to_nfs4_state
This ensures that nfs4_open_release() and nfs4_open_confirm_release()
can now handle an eventual delegation that was returned with out open.
As such, it fixes a delegation "leak" when the user breaks out of an open
call.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 3 Jul 2007 18:41:19 +0000 (14:41 -0400)]
NFSv4: Fix a bug in __nfs4_find_state_byowner
The test for state->state == 0 does not tell you that the stateid is in the
process of being freed. It really tells you that the stateid is not yet
initialised...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 3 Jul 2007 17:04:56 +0000 (13:04 -0400)]
NFSv4: Fix atomic open for execute...
Currently we do not check for the FMODE_EXEC flag as we should. For that
particular case, we need to perform an ACCESS call to the server in order
to check that the file is executable.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 17:58:33 +0000 (13:58 -0400)]
NFSv4: Reduce the chances of an open_owner identifier collision
Currently we just use a 32-bit counter.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 18:03:03 +0000 (14:03 -0400)]
NFSv4: nfs_increment_open_seqid should not return a value
It is a void function...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 17:58:30 +0000 (13:58 -0400)]
NFSv4: Fix underestimate of NFSv4 lookup request size
Also fix up the underestimate of fs_locations
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 17:57:28 +0000 (13:57 -0400)]
NFSv4: Fix the underestimate of NFSv4 open request size
The maximum size depends on the filename size and a number of other
elements which are currently not being counted.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 8 Jul 2007 22:38:23 +0000 (18:38 -0400)]
NFSv4: Fix the NFSv4 owner and owner_group size estimates
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 16:49:23 +0000 (12:49 -0400)]
NFSv4: Don't reuse expired nfs4_state_owner structs
That just confuses certain NFSv4 servers.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 14:24:56 +0000 (10:24 -0400)]
NFSv4: Fix a credential reference leak in nfs4_get_state_owner()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 2 Jul 2007 13:57:54 +0000 (09:57 -0400)]
NFS: Replace NFS_I(inode)->req_lock with inode->i_lock
There is no justification for keeping a special spinlock for the exclusive
use of the NFS writeback code.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 1 Jul 2007 22:13:52 +0000 (18:13 -0400)]
NFSv4: Clean up _nfs4_proc_lookup() vs _nfs4_proc_lookupfh()
They differ only slightly in the arguments they take. Why have they not
been merged?
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 27 Jun 2007 22:30:26 +0000 (18:30 -0400)]
SUNRPC: Suppress some noisy and unnecessary printk() calls in call_verify()
Convert them into dprintk() calls.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 26 Jun 2007 21:04:57 +0000 (17:04 -0400)]
SUNRPC: Ensure RPCSEC_GSS destroys the security context when freeing a cred
Do so by set the gc_proc field to RPC_GSS_PROC_DESTROY, and then sending a
NULL RPC call.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 27 Jun 2007 18:29:12 +0000 (14:29 -0400)]
SUNRPC: Ensure that the struct gss_auth lifetime exceeds the credential's
Add a refcount in order to ensure that the gss_auth doesn't disappear from
underneath us while we're freeing up GSS contexts.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 27 Jun 2007 18:29:04 +0000 (14:29 -0400)]
SUNRPC: Remove the tk_auth macro...
We should almost always be deferencing the rpc_auth struct by means of the
credential's cr_auth field instead of the rpc_clnt->cl_auth anyway. Fix up
that historical mistake, and remove the macro that propagated it.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 26 Jun 2007 20:57:41 +0000 (16:57 -0400)]
SUNRPC: Allow rpc_auth to run clean up before the rpc_client is destroyed
RPCSEC_GSS needs to be able to send NULL RPC calls to the server in order
to free up any remaining GSS contexts.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 26 Jun 2007 23:18:38 +0000 (19:18 -0400)]
SUNRPC: Convert gss_ctx_lock to an RCU lock
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 25 Jun 2007 21:11:20 +0000 (17:11 -0400)]
SUNRPC: Convert the credential garbage collector into a shrinker callback
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 24 Jun 2007 19:57:57 +0000 (15:57 -0400)]
SUNRPC: Give credential cache a local spinlock
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 24 Jun 2007 19:55:26 +0000 (15:55 -0400)]
SUNRPC: Convert the credcache lookup code to use RCU
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 23 Jun 2007 23:45:36 +0000 (19:45 -0400)]
SUNRPC: cleanup rpc credential cache garbage collection
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 25 Jun 2007 14:15:15 +0000 (10:15 -0400)]
SUNRPC: Enforce atomic updates of rpc_cred->cr_flags
Convert to the use of atomic bitops...
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Mon, 25 Jun 2007 13:48:25 +0000 (09:48 -0400)]
SUNRPC: replace casts in auth_unix.c with container_of()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 23 Jun 2007 23:55:31 +0000 (19:55 -0400)]
SUNRPC: Clean up rpc credential initialisation
Add a helper rpc_cred_init()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 24 Jun 2007 00:17:58 +0000 (20:17 -0400)]
SUNRPC: Mark auth and cred operation tables as constant.
Also do the same for gss_api operation tables.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 23 Jun 2007 14:46:47 +0000 (10:46 -0400)]
SUNRPC: Rename rpcauth_destroy() to rpcauth_release()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 23 Jun 2007 14:17:16 +0000 (10:17 -0400)]
SUNRPC: Add the helper function 'rpc_call_null()'
Does a NULL RPC call and returns a pointer to the resulting rpc_task. The
call may be either synchronous or asynchronous.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 23 Jun 2007 14:17:16 +0000 (10:17 -0400)]
SUNRPC: Make rpc_ping() static
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 9 Jun 2007 20:15:46 +0000 (16:15 -0400)]
SUNRPC: Fix races in rpcauth_create
See the FIXME: auth_flavors[] really needs a lock and module refcounting.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 9 Jun 2007 19:42:01 +0000 (15:42 -0400)]
SUNRPC: Fix a memory leak in gss_create()
Fix a memory leak in gss_create() whereby the rpc credcache was not being
freed if the rpc_mkpipe() call failed.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 24 Jun 2007 19:24:29 +0000 (15:24 -0400)]
SUNRPC: Fix a typo in unx_create()
We want to set the unix_cred_cache.nextgc on the first call to
unx_create(), which should be when unix_auth.au_count === 1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 9 Jun 2007 19:41:42 +0000 (15:41 -0400)]
SUNRPC: Fix a memory leak in the auth credcache code
The leak only affects the RPCSEC_GSS caches, since they are the only ones
that are dynamically allocated...
Rename the existing rpcauth_free_credcache() to rpcauth_clear_credcache()
in order to better describe its role, then add a new function
rpcauth_destroy_credcache() that actually frees the cache in addition to
clearing it out.
Also move the call to destroy the credcache in gss_destroy() to come before
the rpc upcall pipe is unlinked.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Fri, 8 Jun 2007 18:14:53 +0000 (14:14 -0400)]
SUNRPC: Add a field to track the number of kernel users of an rpc_pipe
This allows us to correctly deduce when we need to remove the pipe.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Fri, 8 Jun 2007 18:14:46 +0000 (14:14 -0400)]
SUNRPC: Clean up rpc_pipefs.
Add a dentry_ops with a d_delete() method in order to ensure that dentries
are removed as soon as the last reference is gone.
Clean up rpc_depopulate() so that it only removes files that were created
via rpc_populate().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 7 Jun 2007 22:28:02 +0000 (18:28 -0400)]
SUNRPC: Enable non-exclusive create in rpc_mkpipe()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 7 Jun 2007 19:31:36 +0000 (15:31 -0400)]
SUNRPC: Add a downcall queue to struct rpc_inode
Currently, the downcall queue is tied to the struct gss_auth, which means
that different RPCSEC_GSS pseudoflavours must use different upcall pipes.
Add a list to struct rpc_inode that can be used instead.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 7 Jun 2007 14:14:15 +0000 (10:14 -0400)]
SUNRPC: Always match an upcall message in gss_pipe_downcall()
It used to be possible for an rpc.gssd daemon to stuff the RPC credential
cache for any rpc client simply by creating RPCSEC_GSS contexts and then
doing downcalls. In practice, no daemons ever made use of this feature.
Remove this feature now, since it will be impossible to figure out which
mechanism a given context actually matches if we enable more
than one gss mechanism to use the same upcall pipe.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 7 Jun 2007 14:14:14 +0000 (10:14 -0400)]
SUNRPC: Remove the gss_auth spinlock
We're just as well off using the inode spinlock instead.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 7 Jun 2007 14:14:14 +0000 (10:14 -0400)]
SUNRPC: Add a backpointer from the struct rpc_cred to the rpc_auth
Cleans up an issue whereby rpcsec_gss uses the rpc_clnt->cl_auth. If we want
to be able to add several rpc_auths to a single rpc_clnt, then this abuse
must go.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 22:00:42 +0000 (18:00 -0400)]
SUNRPC: fix hang due to eventd deadlock...
Brian Behlendorf writes:
The root cause of the NFS hang we were observing appears to be a rare
deadlock between the kernel provided usermodehelper API and the linux NFS
client. The deadlock can arise because both of these services use the
generic linux work queues. The usermodehelper API run the specified user
application in the context of the work queue. And NFS submits both cleanup
and reconnect work to the generic work queue for handling. Normally this
is fine but a deadlock can result in the following situation.
- NFS client is in a disconnected state
- [events/0] runs a usermodehelper app with an NFS dependent operation,
this triggers an NFS reconnect.
- NFS reconnect happens to be submitted to [events/0] work queue.
- Deadlock, the [events/0] work queue will never process the
reconnect because it is blocked on the previous NFS dependent
operation which will not complete.`
The solution is simply to run reconnect requests on rpciod.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Tue, 12 Jun 2007 14:02:37 +0000 (10:02 -0400)]
SUNRPC: clean up rpc_call_async/rpc_call_sync/rpc_run_task
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 16 Jun 2007 18:18:40 +0000 (14:18 -0400)]
SUNRPC: Move rpc_register_client and friends into net/sunrpc/clnt.c
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 21:31:58 +0000 (17:31 -0400)]
SUNRPC: Remove redundant calls to rpciod_up()/rpciod_down()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 21:26:17 +0000 (17:26 -0400)]
SUNRPC: Make create_client() take a reference to the rpciod workqueue
Ensures that an rpc_client always has the possibility to send asynchronous
RPC calls.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 21:08:36 +0000 (17:08 -0400)]
SUNRPC: Optimise rpciod_up()
Instead of taking the mutex every time we just need to increment/decrement
rpciod_users, we can optmise by using atomic_inc_not_zero and
atomic_dec_and_test.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 17 Jun 2007 21:07:54 +0000 (17:07 -0400)]
SUNRPC: Don't create an rpc_pipefs directory before rpc_clone is initialised
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 20:40:32 +0000 (16:40 -0400)]
SUNRPC: Remove rpc_clnt->cl_count
The kref now does most of what cl_count + cl_user used to do. The only
remaining role for cl_count is to tell us if we are in a 'shutdown'
phase. We can provide that information using a single bit field instead
of a full atomic counter.
Also rename rpc_destroy_client() to rpc_close_client(), which reflects
better what its role is these days.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 20:40:32 +0000 (16:40 -0400)]
SUNRPC: Make rpc_clone take a reference instead of using cl_count
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 9 Jun 2007 23:49:36 +0000 (19:49 -0400)]
SUNRPC: Kill rpc_clnt->cl_oneshot
Replace it with explicit calls to rpc_shutdown_client() or
rpc_destroy_client() (for the case of asynchronous calls).
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 9 Jun 2007 23:39:12 +0000 (19:39 -0400)]
SUNRPC: Kill rpc_clnt->cl_dead
Its use is at best racy, and there is only one user (lockd), which has
additional locking that makes the whole thing redundant.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 20:40:31 +0000 (16:40 -0400)]
SUNRPC: Convert rpc_clnt->cl_users to a kref
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 16 Jun 2007 18:17:01 +0000 (14:17 -0400)]
SUNRPC: Clean up tk_pid allocation and make it lockless
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sat, 16 Jun 2007 18:17:01 +0000 (14:17 -0400)]
SUNRPC: Add a per-rpc_clnt spinlock
Use that to protect the rpc_clnt->cl_tasks list instead of using a global
lock.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Thu, 14 Jun 2007 20:40:14 +0000 (16:40 -0400)]
SUNRPC: Move rpc_task->tk_task list into struct rpc_clnt
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 17 Jun 2007 20:02:44 +0000 (16:02 -0400)]
NFSv4: Convert struct nfs4_opendata to use struct kref
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 17 Jun 2007 20:02:44 +0000 (16:02 -0400)]
NFS: Convert struct nfs_open_context to use a kref
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Sun, 17 Jun 2007 20:02:34 +0000 (16:02 -0400)]
NFS: reduce latency by using conditional rescheduling in nfs_scan_list
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
projects / firefly-linux-kernel-4.4.55.git / log