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path: root/fs/nfs/nfs4proc.c
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2008-07-15NFS: Remove BKL usage from open()Trond Myklebust
All the NFSv4 stateful operations are already protected by other locks (in particular by the rpc_sequence locks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09nfs: initialize timeout variable in nfs4_proc_setclientid_confirmBenny Halevy
gcc (4.3.0) rightfully warns about this: /usr0/export/dev/bhalevy/git/linux-pnfs-bh-nfs41/fs/nfs/nfs4proc.c: In function ‘nfs4_proc_setclientid_confirm’: /usr0/export/dev/bhalevy/git/linux-pnfs-bh-nfs41/fs/nfs/nfs4proc.c:2936: warning: ‘timeout’ may be used uninitialized in this function nfs4_delay that's passed a pointer to 'timeout' is looking at its value and sets it up to some value in the range: NFS4_POLL_RETRY_MIN..NFS4_POLL_RETRY_MAX if (*timeout <= 0) *timeout = NFS4_POLL_RETRY_MIN; if (*timeout > NFS4_POLL_RETRY_MAX) *timeout = NFS4_POLL_RETRY_MAX; Therefore it will end up set to some sane, though rather indeterministic, value. Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09NFS: Ensure we zap only the access and acl caches when setting new aclsTrond Myklebust
...and ensure that we obey the NFS_INO_INVALID_ACL flag when retrieving the acls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09NFS: Fix a warning in nfs4_async_handle_errorTrond Myklebust
We're not modifying the nfs_server when we call nfs_inc_server_stats and friends, so allow the compiler to pass 'const' pointers too. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09NFS: Remove the redundant file_open entry from struct nfs_rpc_opsTrond Myklebust
All instances are set to nfs_open(), so we should just remove the redundant indirection. Ditto for the file_release op Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09NFS: Fix the ftruncate() credential problemTrond Myklebust
ftruncate() access checking is supposed to be performed at open() time, just like reads and writes. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-07-09NFS: Reduce the stack usage in NFSv4 create operationsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-05-16nfs: path_{get,put}() cleanupsJan Blunck
Here are some more places where path_{get,put}() can be used instead of dput()/mntput() pair. Signed-off-by: Jan Blunck <jblunck@suse.de> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-05-16nfs: replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: "J. Bruce Fields" <bfields@fieldses.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-04-19NFSv4: Don't use cred->cr_ops->cr_name in nfs4_proc_setclientid()Trond Myklebust
With the recent change to generic creds, we can no longer use cred->cr_ops->cr_name to distinguish between RPCSEC_GSS principals and AUTH_SYS/AUTH_NULL identities. Replace it with the rpc_authops->au_name instead... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-04-19NFSv4: Ensure we don't corrupt fl->fl_flags in nfs4_proc_unlckTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-04-19NFSv4: Only increment the sequence id if the server saw itTrond Myklebust
It is quite possible that the OPEN, CLOSE, LOCK, LOCKU,... compounds fail before the actual stateful operation has been executed (for instance in the PUTFH call). There is no way to tell from the overall status result which operations were executed from the COMPOUND. The fix is to move incrementing of the sequence id into the XDR layer, so that we do it as we process the results from the stateful operation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-04-19NFSv4: Remove bogus call to nfs4_drop_state_owner() in _nfs4_open_expired()Trond Myklebust
There should be no need to invalidate a perfectly good state owner just because of a stale filehandle. Doing so can cause the state recovery code to break, since nfs4_get_renew_cred() and nfs4_get_setclientid_cred() rely on finding active state owners. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-03-14SUNRPC: Add a helper rpcauth_lookup_generic_cred()Trond Myklebust
The NFSv4 protocol allows clients to negotiate security protocols on the fly in the case where an administrator on the server changes the export settings and/or in the case where we may have a filesystem migration event. Instead of having the NFS client code cache credentials that are tied to a particular AUTH method it is therefore preferable to have a generic credential that can be converted into whatever AUTH is in use by the RPC client when the read/write/sillyrename/... is put on the wire. We do this by means of the new "generic" credential, which basically just caches the minimal information that is needed to look up an RPCSEC_GSS, AUTH_SYS, or AUTH_NULL credential. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25SUNRPC: Run rpc timeout functions as callbacks instead of in softirqsTrond Myklebust
An audit of the current RPC timeout functions shows that they don't really ever need to run in the softirq context. As long as the softirq is able to signal that the wakeup is due to a timeout (which it can do by setting task->tk_status to -ETIMEDOUT) then the callback functions can just run as standard task->tk_callback functions (in the rpciod/process context). The only possible border-line case would be xprt_timer() for the case of UDP, when the callback is used to reduce the size of the transport congestion window. In testing, however, the effect of moving that update to a callback would appear to be minor. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25SUNRPC: Convert users of rpc_wake_up_task to use rpc_wake_up_queued_taskTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2008-02-25NFS: Ensure that the asynchronous RPC calls complete on nfsiod.Trond Myklebust
We want to ensure that rpc_call_ops that involve mntput() are run on nfsiod rather than on rpciod, so that they don't deadlock when the resulting umount calls rpc_shutdown_client(). Hence we specify that read, write and commit calls must complete on nfsiod. Ditto for NFSv4 open, lock, locku and close asynchronous calls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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>
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