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path: root/fs/nfs/nfs4proc.c
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2008-02-14Embed a struct path into struct nameidata instead of nd->{dentry,mnt}Jan Blunck
This is the central patch of a cleanup series. In most cases there is no good reason why someone would want to use a dentry for itself. This series reflects that fact and embeds a struct path into nameidata. Together with the other patches of this series - it enforced the correct order of getting/releasing the reference count on <dentry,vfsmount> pairs - it prepares the VFS for stacking support since it is essential to have a struct path in every place where the stack can be traversed - it reduces the overall code size: without patch series: text data bss dec hex filename 5321639 858418 715768 6895825 6938d1 vmlinux with patch series: text data bss dec hex filename 5320026 858418 715768 6894212 693284 vmlinux This patch: Switch from nd->{dentry,mnt} to nd->path.{dentry,mnt} everywhere. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix cifs] [akpm@linux-foundation.org: fix smack] Signed-off-by: Jan Blunck <jblunck@suse.de> Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-01Merge branch 'task_killable' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'task_killable' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: (22 commits) Remove commented-out code copied from NFS NFS: Switch from intr mount option to TASK_KILLABLE Add wait_for_completion_killable Add wait_event_killable Add schedule_timeout_killable Use mutex_lock_killable in vfs_readdir Add mutex_lock_killable Use lock_page_killable Add lock_page_killable Add fatal_signal_pending Add TASK_WAKEKILL exit: Use task_is_* signal: Use task_is_* sched: Use task_contributes_to_load, TASK_ALL and TASK_NORMAL ptrace: Use task_is_* power: Use task_is_* wait: Use TASK_NORMAL proc/base.c: Use task_is_* proc/array.c: Use TASK_REPORT perfmon: Use task_is_* ... Fixed up conflicts in NFS/sunrpc manually..
2008-01-30NFS: Add an asynchronous delegreturn operation for use in nfs_clear_inodeTrond Myklebust
Otherwise, there is a potential deadlock if the last dput() from an NFSv4 close() or other asynchronous operation leads to nfs_clear_inode calling the synchronous delegreturn. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30nfs4: allow nfsv4 acls on non-regular-filesJ. Bruce Fields
The rfc doesn't give any reason it shouldn't be possible to set an attribute on a non-regular file. And if the server supports it, then it shouldn't be up to us to prevent it. Thanks to Erez for the report and Trond for further analysis. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Tested-by: Erez Zadok <ezk@cs.sunysb.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30NFSv4: Add socket proto argument to setclientidTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30NFS: Enable NFS client to generate CLIENTID strings with IPv6 addressesChuck Lever
We recently added methods to RPC transports that provide string versions of the remote peer address information. Convert the NFSv4 SETCLIENTID procedure to use those methods instead of building the client ID out of whole cloth. 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>
2008-01-30NFS: define a function to update nfsi->cache_change_attributeTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30NFS/SUNRPC: Convert all users of rpc_call_setup()Trond Myklebust
Replace use of rpc_call_setup() with rpc_init_task(), and in cases where we need to initialise task->tk_action, with rpc_call_start(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30NFS: Clean up the (commit|read|write)_setup() callback routinesTrond Myklebust
Move the common code for setting up the nfs_write_data and nfs_read_data structures into fs/nfs/read.c, fs/nfs/write.c and fs/nfs/direct.c. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30SUNRPC: Clean up rpc_run_taskTrond Myklebust
Make it use the new task initialiser structure instead of acting as a wrapper. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-30NFSv4: Clean up the OPEN/CLOSE serialisation codeTrond Myklebust
Reduce the time spent locking the rpc_sequence structure by queuing the nfs_seqid only when we are ready to take the lock (when calling nfs_wait_on_sequence). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-03NFSv4: Fix open_to_lock_owner sequenceid allocation...Trond Myklebust
NFSv4 file locking is currently completely broken since it doesn't respect the OPEN sequencing when it is given an unconfirmed lock_owner and needs to do an open_to_lock_owner. Worse: it breaks the sunrpc rules by doing a GFP_KERNEL allocation inside an rpciod callback. Fix is to preallocate the open seqid structure in nfs4_alloc_lockdata if we see that the lock_owner is unconfirmed. Then, in nfs4_lock_prepare() we wait for either the open_seqid, if the lock_owner is still unconfirmed, or else fall back to waiting on the standard lock_seqid. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-01-03NFSv4: nfs4_open_confirm must not set the open_owner as confirmed on errorTrond Myklebust
RFC3530 states that the open_owner is confirmed if and only if the client sends an OPEN_CONFIRM request with the appropriate sequence id and stateid within the lease period. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-12-06NFS: Switch from intr mount option to TASK_KILLABLEMatthew Wilcox
By using the TASK_KILLABLE infrastructure, we can get rid of the 'intr' mount option. We have to use _killable everywhere instead of _interruptible as we get rid of rpc_clnt_sigmask/sigunmask. Signed-off-by: Liam R. Howlett <howlett@gmail.com> Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2007-10-19NFSv4: Ensure that we wait for the CLOSE request to completeTrond Myklebust
Otherwise, we do end up breaking close-to-open semantics. We also end up breaking some of the silly-rename tests in Connectathon on some setups. Please refer to the bug-report at http://bugzilla.linux-nfs.org/show_bug.cgi?id=150 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-19NFS: Fix a race in sillyrenameTrond Myklebust
lookup() and sillyrename() can race one another because the sillyrename() completion cannot take the parent directory's inode->i_mutex since the latter may be held by whoever is calling dput(). We therefore have little option but to add extra locking to ensure that nfs_lookup() and nfs_atomic_open() do not race with the sillyrename completion. If somebody has looked up the sillyrenamed file in the meantime, we just transfer the sillydelete information to the new dentry. Please refer to the bug-report at http://bugzilla.linux-nfs.org/show_bug.cgi?id=150 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Fix a connectathon regression in NFSv3 and NFSv4Trond Myklebust
We're failing basic test6 against Linux servers because they lack a correct change attribute. The fix is to assume that we always want to invalidate the readdir caches when we call update_changeattr and/or nfs_post_op_update_inode on a directory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Use nfs_refresh_inode() in ops that aren't expected to change the inodeTrond Myklebust
nfs_post_op_update_inode() is really only meant to be used if we expect the inode and its attributes to have changed in some way. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFSv4: Fix nfs_atomic_open() to set the verifier on negative dentries tooTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Don't hash the negative dentry when optimising for an O_EXCL openTrond Myklebust
We don't want to leave an unverified hashed negative dentry if the exclusive create fails to complete. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Fake up 'wcc' attributes to prevent cache invalidation after writeTrond Myklebust
NFSv2 and v4 don't offer weak cache consistency attributes on WRITE calls. In NFSv3, returning wcc data is optional. In all cases, we want to prevent the client from invalidating our cached data whenever ->write_done() attempts to update the inode attributes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Fix atime revalidation in read()Trond Myklebust
NFSv3 will correctly update atime on a read() call, so there is no need to set the NFS_INO_INVALID_ATIME flag unless the call to nfs_refresh_inode() fails. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Fix atime revalidation in readdir()Trond Myklebust
NFSv3 will correctly update atime on a readdir call, so there is no need to set the NFS_INO_INVALID_ATIME flag unless the call to nfs_refresh_inode() fails. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Don't force a dcache revalidation if nfs_wcc_update_inode succeedsTrond Myklebust
The reason is that if the weak cache consistency update was successful, then we know that our client must be the only one that changed the directory, and we've already updated the dcache to reflect the change. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFSv4: Make NFSv4 ACCESS calls return attributes too...Trond Myklebust
It doesn't really make sense to cache an access call without also revalidating the attributes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFSv4: Simplify _nfs4_do_access()Trond Myklebust
Currently, _nfs4_do_access() is just a copy of nfs_do_access() with added conversion of the open flags into an access mask. This patch merges the duplicate functionality. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-09NFS: Replace file->private_data with calls to nfs_file_open_context()Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-10-0964 bit ino support for NFS clientPeter Staubach
Hi. Attached is a patch to modify the NFS client code to support 64 bit ino's, as appropriate for the system and the NFS protocol version. The code basically just expand the NFS interfaces for routines which handle ino's from using ino_t to u64 and then uses the fileid in the nfs_inode instead of i_ino in the inode. The code paths that were updated are in the getattr method and the readdir methods. This should be no real change on 64 bit platforms. Since the ino_t is an unsigned long, it would already be 64 bits wide. Thanx... ps Signed-off-by: Peter Staubach <staubach@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-09-01NFSv4: Ensure that we pass the correct dentry to nfs4_intent_set_fileTrond Myklebust
This patch fixes an Oops that was reported by Gabriel Barazer. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-09-01NFSv4: Fix a typo in _nfs4_do_open_reclaimTrond Myklebust
This should fix the following Oops reported by Jeff Garzik: kernel BUG at fs/nfs/nfs4xdr.c:1040! invalid opcode: 0000 [1] SMP CPU 0 Modules linked in: nfs lockd sunrpc af_packet ipv6 cpufreq_ondemand acpi_cpufreq battery floppy nvram sg snd_hda_intel ata_generic snd_pcm_oss snd_mixer_oss snd_pcm i2c_i801 snd_page_alloc e1000 firewire_ohci ata_piix i2c_core sr_mod cdrom sata_sil ahci libata sd_mod scsi_mod ext3 jbd ehci_hcd uhci_hcd Pid: 16353, comm: 10.10.10.1-recl Not tainted 2.6.23-rc3 #1 RIP: 0010:[<ffffffff88240980>] [<ffffffff88240980>] :nfs:encode_open+0x1c0/0x330 RSP: 0018:ffff8100467c5c60 EFLAGS: 00010202 RAX: ffff81000f89b8b8 RBX: 00000000697a6f6d RCX: ffff81000f89b8b8 RDX: 0000000000000004 RSI: 0000000000000004 RDI: ffff8100467c5c80 RBP: ffff8100467c5c80 R08: ffff81000f89bc30 R09: ffff81000f89b83f R10: 0000000000000001 R11: ffffffff881e79e0 R12: ffff81003cbd1808 R13: ffff81000f89b860 R14: ffff81005fc984e0 R15: ffffffff88240af0 FS: 0000000000000000(0000) GS:ffffffff8052a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00002adb9e51a030 CR3: 000000007ea7e000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process 10.10.10.1-recl (pid: 16353, threadinfo ffff8100467c4000, task ffff8100038ce780) Stack: ffff81004aeb6a40 ffff81003cbd1808 ffff81003cbd1808 ffffffff88240b5d ffff81000f89b8bc ffff81005fc984e8 ffff81000f89bc30 ffff81005fc984e8 0000000300000000 0000000000000000 0000000000000000 ffff81003cbd1800 Call Trace: [<ffffffff88240b5d>] :nfs:nfs4_xdr_enc_open_noattr+0x6d/0x90 [<ffffffff881e74b7>] :sunrpc:rpcauth_wrap_req+0x97/0xf0 [<ffffffff88240af0>] :nfs:nfs4_xdr_enc_open_noattr+0x0/0x90 [<ffffffff881df57a>] :sunrpc:call_transmit+0x18a/0x290 [<ffffffff881e5e7b>] :sunrpc:__rpc_execute+0x6b/0x290 [<ffffffff881dff76>] :sunrpc:rpc_do_run_task+0x76/0xd0 [<ffffffff882373f6>] :nfs:_nfs4_proc_open+0x76/0x230 [<ffffffff88237a2e>] :nfs:nfs4_open_recover_helper+0x5e/0xc0 [<ffffffff88237b74>] :nfs:nfs4_open_recover+0xe4/0x120 [<ffffffff88238e14>] :nfs:nfs4_open_reclaim+0xa4/0xf0 [<ffffffff882413c5>] :nfs:nfs4_reclaim_open_state+0x55/0x1b0 [<ffffffff882417ea>] :nfs:reclaimer+0x2ca/0x390 [<ffffffff88241520>] :nfs:reclaimer+0x0/0x390 [<ffffffff8024e59b>] kthread+0x4b/0x80 [<ffffffff8020cad8>] child_rip+0xa/0x12 [<ffffffff8024e550>] kthread+0x0/0x80 [<ffffffff8020cace>] child_rip+0x0/0x12 Code: 0f 0b eb fe 48 89 ef c7 00 00 00 00 02 be 08 00 00 00 e8 79 RIP [<ffffffff88240980>] :nfs:encode_open+0x1c0/0x330 RSP <ffff8100467c5c60> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-08-07NFS: Fix NFSv4 open stateid regressionsTrond Myklebust
Do not allow cached open for O_RDONLY or O_WRONLY unless the file has been previously opened in these modes. Also Fix the calculation of the mode in nfs4_close_prepare. We should only issue an OPEN_DOWNGRADE if we're sure that we will still be holding the correct open modes. This may not be the case if we've been doing delegated opens. Finally, there is no need to adjust the open mode bit flags in nfs4_close_done(): that has already been done in nfs4_close_prepare(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19SUNRPC: Clean up the sillyrename codeTrond Myklebust
Fix a couple of bugs: - Don't rely on the parent dentry still being valid when the call completes. Fixes a race with shrink_dcache_for_umount_subtree() - Don't remove the file if the filehandle has been labelled as stale. Fix a couple of inefficiencies - Remove the global list of sillyrenamed files. Instead we can cache the sillyrename information in the dentry->d_fsdata - Move common code from unlink_setup/unlink_done into fs/nfs/unlink.c Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19NFS: Introduce struct nfs_removeargs+nfs_removeresTrond Myklebust
We need a common structure for setting up an unlink() rpc call in order to fix the asynchronous unlink code. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19NFSv4: Try to recover from getfh failures in nfs4_xdr_dec_openTrond Myklebust
Try harder to recover the open state if the server failed to return a filehandle. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19NFSv4: 'constify' lookup arguments.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-19NFSv4: Fix open state recoveryTrond Myklebust
Ensure that opendata->state is always initialised when we do state recovery. Ensure that we set the filehandle in the case where we're doing an "OPEN_CLAIM_PREVIOUS" call due to a server reboot. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Make sure unlock is really an unlock when cancelling a lockFrank Filz
I ran into a curious issue when a lock is being canceled. The cancellation results in a lock request to the vfs layer instead of an unlock request. This is particularly insidious when the process that owns the lock is exiting. In that case, sometimes the erroneous lock is applied AFTER the process has entered zombie state, preventing the lock from ever being released. Eventually other processes block on the lock causing a slow degredation of the system. In the 2.6.16 kernel this was investigated on, the problem is compounded by the fact that the cl_sem is held while blocking on the vfs lock, which results in most processes accessing the nfs file system in question hanging. In more detail, here is how the situation occurs: first _nfs4_do_setlk(): static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int reclaim) ... ret = nfs4_wait_for_completion_rpc_task(task); if (ret == 0) { ... } else data->cancelled = 1; then nfs4_lock_release(): static void nfs4_lock_release(void *calldata) ... if (data->cancelled != 0) { struct rpc_task *task; task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp, data->arg.lock_seqid); The problem is the same file_lock that was passed in to _nfs4_do_setlk() gets passed to nfs4_do_unlck() from nfs4_lock_release(). So the type is still F_RDLCK or FWRLCK, not F_UNLCK. At some point, when cancelling the lock, the type needs to be changed to F_UNLCK. It seemed easiest to do that in nfs4_do_unlck(), but it could be done in nfs4_lock_release(). The concern I had with doing it there was if something still needed the original file_lock, though it turns out the original file_lock still needs to be modified by nfs4_do_unlck() because nfs4_do_unlck() uses the original file_lock to pass to the vfs layer, and a copy of the original file_lock for the RPC request. It seems like the simplest solution is to force all situations where nfs4_do_unlck() is being used to result in an unlock, so with that in mind, I made the following change: Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Fix up stateid locking...Trond Myklebust
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>
2007-07-10NFSv4: Clean up the callers of nfs4_open_recover_helper()Trond Myklebust
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>
2007-07-10NFSv4: Don't call OPEN if we already have an open stateid for a fileTrond Myklebust
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>
2007-07-10NFSv4: Check for the existence of a delegation in nfs4_open_prepare()Trond Myklebust
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>
2007-07-10NFSv4: Clean up _nfs4_proc_open()Trond Myklebust
Use a flag instead of the 'data->rpc_status = -ENOMEM hack. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Allow nfs4_opendata_to_nfs4_state to return errors.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Improve the debugging of bad sequence id errors...Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Always use the delegation if we have oneTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Clean up confirmation of sequence ids...Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Support recalling delegations by stateid part 2Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: Fix up a bug in nfs4_open_recover()Trond Myklebust
Don't clobber the delegation info... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2007-07-10NFSv4: set the delegation in nfs4_opendata_to_nfs4_stateTrond Myklebust
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>
2007-07-10NFSv4: Fix atomic open for execute...Trond Myklebust
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>
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