Commit Graph

1617 Commits

Author SHA1 Message Date
Linus Torvalds 2897c684d1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [NFS] Set CONFIG_KEYS when CONFIG_NFS_USE_KERNEL_DNS is set
  AFS: Implement an autocell mount capability [ver #2]
  DNS: If the DNS server returns an error, allow that to be cached [ver #2]
  NFS: Use kernel DNS resolver [ver #2]
  cifs: update README to include details about 'fsc' option
2010-08-13 10:37:30 -07:00
Steve French 3f43231230 [NFS] Set CONFIG_KEYS when CONFIG_NFS_USE_KERNEL_DNS is set
Previous patch relied on DNS_RESOLVER setting CONFIG_KEYS
but needs to be selected in NFS config when using the new
DNS resolver

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
CC: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-08-12 18:16:45 +00:00
Bryan Schumaker c2e8139c9f NFS: Use kernel DNS resolver [ver #2]
Use the kernel DNS resolver to translate hostnames to IP addresses.  Create a
new config option to choose between the legacy DNS resolver and the new
resolver.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Acked-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2010-08-11 17:11:28 +00:00
Rusty Russell 9bbb9e5a33 param: use ops in struct kernel_param, rather than get and set fns directly
This is more kernel-ish, saves some space, and also allows us to
expand the ops without breaking all the callers who are happy for the
new members to be NULL.

The few places which defined their own param types are changed to the
new scheme (more which crept in recently fixed in following patches).

Since we're touching them anyway, we change get() and set() to take a
const struct kernel_param (which they really are).  This causes some
harmless warnings until we fix them (in following patches).

To reduce churn, module_param_call creates the ops struct so the callers
don't have to change (and casts the functions to reduce warnings).
The modern version which takes an ops struct is called module_param_cb.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Ville Syrjala <syrjala@sci.fi>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Alessandro Rubini <rubini@ipvvis.unipv.it>
Cc: Michal Januszewski <spock@gentoo.org>
Cc: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Neil Brown <neilb@suse.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: linux-fbdev-devel@lists.sourceforge.net
Cc: linux-nfs@vger.kernel.org
Cc: netdev@vger.kernel.org
2010-08-11 23:04:13 +09:30
Linus Torvalds 5f248c9c25 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits)
  no need for list_for_each_entry_safe()/resetting with superblock list
  Fix sget() race with failing mount
  vfs: don't hold s_umount over close_bdev_exclusive() call
  sysv: do not mark superblock dirty on remount
  sysv: do not mark superblock dirty on mount
  btrfs: remove junk sb_dirt change
  BFS: clean up the superblock usage
  AFFS: wait for sb synchronization when needed
  AFFS: clean up dirty flag usage
  cifs: truncate fallout
  mbcache: fix shrinker function return value
  mbcache: Remove unused features
  add f_flags to struct statfs(64)
  pass a struct path to vfs_statfs
  update VFS documentation for method changes.
  All filesystems that need invalidate_inode_buffers() are doing that explicitly
  convert remaining ->clear_inode() to ->evict_inode()
  Make ->drop_inode() just return whether inode needs to be dropped
  fs/inode.c:clear_inode() is gone
  fs/inode.c:evict() doesn't care about delete vs. non-delete paths now
  ...

Fix up trivial conflicts in fs/nilfs2/super.c
2010-08-10 11:26:52 -07:00
Al Viro b57922d97f convert remaining ->clear_inode() to ->evict_inode()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-08-09 16:48:37 -04:00
Linus Torvalds 5df6b8e65a Merge branch 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'nfs-for-2.6.36' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (42 commits)
  NFS: NFSv4.1 is no longer a "developer only" feature
  NFS: NFS_V4 is no longer an EXPERIMENTAL feature
  NFS: Fix /proc/mount for legacy binary interface
  NFS: Fix the locking in nfs4_callback_getattr
  SUNRPC: Defer deleting the security context until gss_do_free_ctx()
  SUNRPC: prevent task_cleanup running on freed xprt
  SUNRPC: Reduce asynchronous RPC task stack usage
  SUNRPC: Move the bound cred to struct rpc_rqst
  SUNRPC: Clean up of rpc_bindcred()
  SUNRPC: Move remaining RPC client related task initialisation into clnt.c
  SUNRPC: Ensure that rpc_exit() always wakes up a sleeping task
  SUNRPC: Make the credential cache hashtable size configurable
  SUNRPC: Store the hashtable size in struct rpc_cred_cache
  NFS: Ensure the AUTH_UNIX credcache is allocated dynamically
  NFS: Fix the NFS users of rpc_restart_call()
  SUNRPC: The function rpc_restart_call() should return success/failure
  NFSv4: Get rid of the bogus RPC_ASSASSINATED(task) checks
  NFSv4: Clean up the process of renewing the NFSv4 lease
  NFSv4.1: Handle NFS4ERR_DELAY on SEQUENCE correctly
  NFS: nfs_rename() should not have to flush out writebacks
  ...
2010-08-07 13:19:36 -07:00
Trond Myklebust 3dce9a5c3a NFS: NFSv4.1 is no longer a "developer only" feature
Mark it as 'experimental' instead, since in practice, NFSv4.1 should now be
relatively stable.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06 13:41:41 -04:00
Trond Myklebust b3edc2bc19 NFS: NFS_V4 is no longer an EXPERIMENTAL feature
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06 13:41:40 -04:00
Bryan Schumaker d5eff1a341 NFS: Fix /proc/mount for legacy binary interface
Add a flag so we know if we mounted the NFS server using the legacy
binary interface.  If we used the legacy interface, then we should not
show the mountd options.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06 13:41:39 -04:00
Trond Myklebust 761fe93cdf NFS: Fix the locking in nfs4_callback_getattr
The delegation is protected by RCU now, so we need to replace the
nfsi->rwsem protection with an rcu protected section.

Reported-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-06 13:41:39 -04:00
Trond Myklebust a17c2153d2 SUNRPC: Move the bound cred to struct rpc_rqst
This will allow us to save the original generic cred in rpc_message, so
that if we migrate from one server to another, we can generate a new bound
cred without having to punt back to the NFS layer.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-04 08:54:09 -04:00
Trond Myklebust d05dd4e98f NFS: Fix the NFS users of rpc_restart_call()
Fix up those functions that depend on knowing whether or not
rpc_restart_call is successful or not.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:44 -04:00
Trond Myklebust a6f03393ec NFSv4: Get rid of the bogus RPC_ASSASSINATED(task) checks
There is no real reason to have RPC_ASSASSINATED() checks in the NFS code.
As far as it is concerned, this is just an RPC error...

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:43 -04:00
Trond Myklebust 452e93523d NFSv4: Clean up the process of renewing the NFSv4 lease
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:42 -04:00
Trond Myklebust 14516c3a30 NFSv4.1: Handle NFS4ERR_DELAY on SEQUENCE correctly
In RFC5661, an NFS4ERR_DELAY error on a SEQUENCE operation has the special
meaning that the server is not finished processing the request. In this
case we want to just retry the request without touching the slot.

Also fix a bug whereby we would fail to update the sequence id if the
server returned any error other than NFS_OK/NFS4ERR_DELAY.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:42 -04:00
Trond Myklebust 0a8ebba943 NFS: nfs_rename() should not have to flush out writebacks
We don't really support nfs servers that invalidate the file handle after a
rename, so precautions such as flushing out dirty data before renaming the
file are superfluous.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:41 -04:00
Trond Myklebust 1b924e5f87 NFS: Clean up the callers of nfs_wb_all()
There is no need to flush out writes before calling nfs_wb_all().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:40 -04:00
Trond Myklebust af7fa16506 NFS: Fix up the fsync code
Christoph points out that the VFS will always flush out data before calling
nfs_fsync(), so we can dispense with a full call to nfs_wb_all(), and
replace that with a simpler call to nfs_commit_inode().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-08-03 22:06:07 -04:00
Eric Paris 9cfcac810e vfs: re-introduce MAY_CHDIR
Currently MAY_ACCESS means that filesystems must check the permissions
right then and not rely on cached results or the results of future
operations on the object.  This can be because of a call to sys_access() or
because of a call to chdir() which needs to check search without relying on
any future operations inside that dir.  I plan to use MAY_ACCESS for other
purposes in the security system, so I split the MAY_ACCESS and the
MAY_CHDIR cases.

Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by:  Stephen D. Smalley <sds@tycho.nsa.gov>
Signed-off-by: James Morris <jmorris@namei.org>
2010-08-02 15:35:06 +10:00
Trond Myklebust 77a63f3d1e NFS: Fix a typo in include/linux/nfs_fs.h
nfs_commit_inode() needs to be defined irrespectively of whether or not
we are supporting NFSv3 and NFSv4.

Allow the compiler to optimise away code in the NFSv2-only case by
converting it into an inlined stub function.

Reported-and-tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-08-01 15:10:01 -07:00
Trond Myklebust cfb506e1d3 NFS: Ensure that writepage respects the nonblock flag
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30 15:38:56 -04:00
Trond Myklebust b608b283a9 NFS: kswapd must not block in nfs_release_page
See https://bugzilla.kernel.org/show_bug.cgi?id=16056

If other processes are blocked waiting for kswapd to free up some memory so
that they can make progress, then we cannot allow kswapd to block on those
processes.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-07-30 15:38:42 -04:00
Dan Carpenter 674b222292 nfs: include space for the NUL in root path
In root_nfs_name() it does the following:

        if (strlen(buf) + strlen(cp) > NFS_MAXPATHLEN) {
                printk(KERN_ERR "Root-NFS: Pathname for remote directory too long.\n");
                return -1;
        }
        sprintf(nfs_export_path, buf, cp);

In the original code if (strlen(buf) + strlen(cp) == NFS_MAXPATHLEN)
then the sprintf() would lead to an overflow.  Generally the rest of the
code assumes that the path can have NFS_MAXPATHLEN (1024) characters and
a NUL terminator so the fix is to add space to the nfs_export_path[]
buffer.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30 15:33:39 -04:00
Trond Myklebust 77041ed9b4 NFSv4: Ensure the lockowners are labelled using the fl_owner and/or fl_pid
flock locks want to be labelled using the process pid, while posix locks
want to be labelled using the fl_owner.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30 14:46:10 -04:00
Trond Myklebust d3c7b7ccc1 NFSv4: Add support for the RELEASE_LOCKOWNER operation
This is needed by NFSv4.0 servers in order to keep the number of locking
stateids at a manageable level.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30 14:46:10 -04:00
Trond Myklebust daccbded7f NFSv4: Clean up for lockowner XDR encoding
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30 14:46:09 -04:00
Trond Myklebust f11ac8db5d NFSv4: Ensure that we track the NFSv4 lock state in read/write requests.
This patch fixes bugzilla entry 14501:
  https://bugzilla.kernel.org/show_bug.cgi?id=14501

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-07-30 14:41:56 -04:00
Dave Chinner 7f8275d0d6 mm: add context argument to shrinker callback
The current shrinker implementation requires the registered callback
to have global state to work from. This makes it difficult to shrink
caches that are not global (e.g. per-filesystem caches). Pass the shrinker
structure to the callback so that users can embed the shrinker structure
in the context the shrinker needs to operate on and get back to it in the
callback via container_of().

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2010-07-19 14:56:17 +10:00
Trond Myklebust 1f0e890dba NFSv4: Clean up struct nfs4_state_owner
The 'so_delegations' list appears to be unused.

Also eliminate so_client. If we already have so_server, we can get to the
nfs_client structure.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-24 15:11:43 -04:00
Trond Myklebust 1055d76d91 NFSv4.1: There is no need to init the session more than once...
Set up a flag to ensure that is indeed the case.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:03 -04:00
Trond Myklebust fe74ba3a8d NFSv41: Cleanup for nfs4_alloc_session.
There is no reason to change the nfs_client state every time we allocate a
new session. Move that line into nfs4_init_client_minor_version.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:03 -04:00
Trond Myklebust d77d76ffb6 NFSv41: Clean up exclusive create
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:03 -04:00
Trond Myklebust a443234535 NFSv41: Deprecate nfs_client->cl_minorversion
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust e047a10c12 NFSv41: Fix nfs_async_inode_return_delegation() ugliness
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust c48f4f3541 NFSv41: Convert the various reboot recovery ops etc to minor version ops
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust 97dc135947 NFSv41: Clean up the NFSv4.1 minor version specific operations
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust a2118c33aa NFSv41: Don't store session state in the nfs_client->cl_state
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust df8964554a NFSv41: Further cleanup for nfs4_sequence_done
Instead of testing if the nfs_client has a session, we should be testing if
the struct nfs4_sequence_res was set up with one.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust 035168ab39 NFSv4.1: Make nfs4_setup_sequence take a nfs_server argument
In anticipation of the day when we have per-filesystem sessions, and also
in order to allow the session to change in the event of a filesystem
migration event.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:02 -04:00
Trond Myklebust 71ac6da994 NFSv4.1: Merge the nfs41_proc_async_sequence() and nfs4_proc_sequence()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust aa5190d0ed NFSv4: Kill nfs4_async_handle_error() abuses by NFSv4.1
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust d185a334c7 NFSv4.1: Simplify nfs41_sequence_done()
Nobody uses the rpc_status parameter.

It is not obvious why we need the struct nfs_client argument either, when
we already have that information in the session.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust 2a6e26cdb8 NFSv4.1: Clean up nfs4_setup_sequence
Firstly, there is little point in first zeroing out the entire struct
nfs4_sequence_res, and then initialising all fields save one. Just
initialise the last field to zero...

Secondly, nfs41_setup_sequence() has only 2 possible return values: 0, or
-EAGAIN, so there is no 'terminate rpc task' case.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust d5f8d3fe72 NFSv41: Fix a memory leak in nfs41_proc_async_sequence()
If the call to rpc_call_async() fails, then the arguments will not be
freed, since there will be no call to nfs41_sequence_call_done

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:24:01 -04:00
Trond Myklebust d3f6baaa34 NFSv4: Fix an embarassing typo in encode_attrs()
Apparently, we have never been able to set the atime correctly from the
NFSv4 client.

Reported-by: 小倉一夫 <ka-ogura@bd6.so-net.ne.jp>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-06-22 13:22:54 -04:00
Trond Myklebust 0be8189f2c NFSv4: Ensure that /proc/self/mountinfo displays the minor version number
Currently, we do not display the minor version mount parameter in the
/proc mount info.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-06-22 13:22:53 -04:00
Trond Myklebust 44950b67a6 NFSv4.1: Ensure that we initialise the session when following a referral
Put the code that is common to both the referral and ordinary mount cases
into a common helper routine.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2010-06-22 13:22:53 -04:00
Andy Adamson f799bdb355 nfs4 use mandatory attribute file type in nfs4_get_root
S_ISDIR(fsinfo.fattr->mode) checks the file type rather than the mode bits,
so we should be checking for the NFS_ATTR_FATTR_TYPE fattr property.

Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
2010-06-22 13:17:43 -04:00
Christoph Hellwig 7ea8085910 drop unused dentry argument to ->fsync
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2010-05-27 22:05:02 -04:00