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* Merge git://git.linux-nfs.org/pub/linux/nfs-2.6Linus Torvalds2006-03-25
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.linux-nfs.org/pub/linux/nfs-2.6: (103 commits) SUNRPC,RPCSEC_GSS: spkm3--fix config dependencies SUNRPC,RPCSEC_GSS: spkm3: import contexts using NID_cast5_cbc LOCKD: Make nlmsvc_traverse_shares return void LOCKD: nlmsvc_traverse_blocks return is unused SUNRPC,RPCSEC_GSS: fix krb5 sequence numbers. NFSv4: Dont list system.nfs4_acl for filesystems that don't support it. SUNRPC,RPCSEC_GSS: remove unnecessary kmalloc of a checksum SUNRPC: Ensure rpc_call_async() always calls tk_ops->rpc_release() SUNRPC: Fix memory barriers for req->rq_received NFS: Fix a race in nfs_sync_inode() NFS: Clean up nfs_flush_list() NFS: Fix a race with PG_private and nfs_release_page() NFSv4: Ensure the callback daemon flushes signals SUNRPC: Fix a 'Busy inodes' error in rpc_pipefs NFS, NLM: Allow blocking locks to respect signals NFS: Make nfs_fhget() return appropriate error values NFSv4: Fix an oops in nfs4_fill_super lockd: blocks should hold a reference to the nlm_file NFSv4: SETCLIENTID_CONFIRM should handle NFS4ERR_DELAY/NFS4ERR_RESOURCE NFSv4: Send the delegation stateid for SETATTR calls ...
| * LOCKD: Make nlmsvc_traverse_shares return voidJ. Bruce Fields2006-03-20
| | | | | | | | | | | | | | The nlmsvc_traverse_shares return value is always zero, hence useless. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * LOCKD: nlmsvc_traverse_blocks return is unusedJ. Bruce Fields2006-03-20
| | | | | | | | | | | | | | Note that we never return non-zero. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: blocks should hold a reference to the nlm_fileTrond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Fix a typo in nlmsvc_grant_release()Trond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Add helper for *_RES callbacksTrond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NLM: Add nlmclnt_release_callTrond Myklebust2006-03-20
| | | | | | | | | | | | Add a helper function to simplify the freeing of NLM client requests. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NLM: Fix nlmclnt_test to not copy private part of locksTrond Myklebust2006-03-20
| | | | | | | | | | | | | | The struct file_lock does not carry a properly initialised lock, so don't copy it as if it were. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NLM: Simplify client locksTrond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NLM: nlmclnt_cancel_callback should accept NLM_LCK_DENIED errorsTrond Myklebust2006-03-20
| | | | | | | | | | | | | | NLM_LCK_DENIED is a valid error return for an NLM_CANCEL call by the client. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Fix Oopses due to list manipulation errors.Trond Myklebust2006-03-20
| | | | | | | | | | | | | | | | The patch "stop abusing file_lock_list introduces a couple of bugs since the locks may be copied and need to be removed from the lists when they are destroyed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: stop abusing file_lock_listChristoph Hellwig2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently lockd directly access the file_lock_list from fs/locks.c. It does so to mark locks granted or reclaimable. This is very suboptimal, because a) lockd needs to poke into locks.c internals, and b) it needs to iterate over all locks in the system for marking locks granted or reclaimable. This patch adds lists for granted and reclaimable locks to the nlm_host structure instead, and adds locks to those. nlmclnt_lock: now adds the lock to h_granted instead of setting the NFS_LCK_GRANTED, still O(1) nlmclnt_mark_reclaim: goes away completely, replaced by a list_splice_init. Complexity reduced from O(locks in the system) to O(1) reclaimer: iterates over h_reclaim now, complexity reduced from O(locks in the system) to O(locks per nlm_host) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Make lockd use rpc_new_client() instead of rpc_create_clientTrond Myklebust2006-03-20
| | | | | | | | | | | | | | | | When doing NLM_GRANTED requests, lockd may end up blocking if we use rpc_create_client() due to the synchronous call to rpc_ping(). Instead, use rpc_new_client(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Make nlmsvc_create_block() use nlmsvc_lookup_host()Trond Myklebust2006-03-20
| | | | | | | | | | | | | | Currently it uses nlmclnt_lookup_host(), which puts the resulting host structure on a different list. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Clean up of the server-side GRANTED codeTrond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Add refcounting to struct nlm_blockTrond Myklebust2006-03-20
| | | | | | | | | | | | | | Otherwise, the block may disappear from underneath us when in nlmsvc_retry_blocked. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Fix server-side lock blocking codeTrond Myklebust2006-03-20
| | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Remove FL_LOCKD flagJ. Bruce Fields2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently lockd identifies its own locks using the FL_LOCKD flag. This doesn't scale well to multiple lock managers--if we did this in nfsv4 too, for example, we'd be left with only one free flag bit. Instead, we just check whether the file manager ops (fl_lmops) set on this lock are our own. The only use for this is in nlm_traverse_locks, which uses it to find locks that need cleaning up when freeing a host or a file. In the long run it might be nice to do reference counting instead of traversing all the locks like this.... Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * locks,lockd: fix race in nlmsvc_testlockAndy Adamson2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | posix_test_lock() returns a pointer to a struct file_lock which is unprotected and can be removed while in use by the caller. Move the conflicting lock from the return to a parameter, and copy the conflicting lock. In most cases the caller ends up putting the copy of the conflicting lock on the stack. On i386, sizeof(struct file_lock) appears to be about 100 bytes. We're assuming that's reasonable. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: make nlmsvc_lock use only posix_lock_fileAndy Adamson2006-03-20
| | | | | | | | | | | | | | | | | | | | Reorganize nlmsvc_lock() to make full use of posix_lock_file(), which does eveything nlmsvc_lock() needs - no need to call posix_test_lock(), posix_locks_deadlock(), or posix_block_lock() separately. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: simplify nlmsvc_grant_blockedAndy Adamson2006-03-20
| | | | | | | | | | | | | | | | | | | | Reorganize nlmsvc_grant_blocked() to make full use of posix_lock_file(). Note that there's no need for separate calls to posix_test_lock(), posix_locks_deadlock(), or posix_block_lock(). Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: clean up nlmsvc_lockAndy Adamson2006-03-20
| | | | | | | | | | | | | | | | Slightly more consistent dprintk error reporting, consolidate some up()'s. Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC: eliminate rpc_call()Chuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean-up: replace rpc_call() helper with direct call to rpc_call_sync. This makes NFSv2 and NFSv3 synchronous calls more computationally efficient, and reduces stack consumption in functions that used to invoke rpc_call more than once. Test plan: Compile kernel with CONFIG_NFS enabled. Connectathon on NFS version 2, version 3, and version 4 mount points. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * SUNRPC: display human-readable procedure name in rpc_iostats outputChuck Lever2006-03-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add fields to the rpc_procinfo struct that allow the display of a human-readable name for each procedure in the rpc_iostats output. Also fix it so that the NFSv4 stats are broken up correctly by sub-procedure number. NFSv4 uses only two real RPC procedures: NULL, and COMPOUND. Test plan: Mount with NFSv2, NFSv3, and NFSv4, and do "cat /proc/self/mountstats". Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * lockd: Don't expose the process pid to the NLM serverTrond Myklebust2006-03-20
| | | | | | | | | | | | Instead we use the nlm_lockowner->pid. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * NLM: nlm_alloc_call should not immediately fail on signalTrond Myklebust2006-03-20
| | | | | | | | | | | | | | | | Currently, nlm_alloc_call tests for a signal before it even tries to allocate memory. Fix it so that it tries at least once. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | [PATCH] fs: Use ARRAY_SIZE macroTobias Klauser2006-03-24
|/ | | | | | | | | | | | | | | | | Use ARRAY_SIZE macro instead of sizeof(x)/sizeof(x[0]) and remove a duplicate of ARRAY_SIZE. Some trailing whitespaces are also deleted. Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Cc: David Howells <dhowells@redhat.com> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@cse.unsw.edu.au> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Nathan Scott <nathans@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NLM: Ensure we do not Oops in the case of an unlockTrond Myklebust2006-03-14
| | | | | | | | | | | | In theory, NLM specs assure us that the server will only reply LCK_GRANTED or LCK_DENIED_GRACE_PERIOD to our NLM_UNLOCK request. In practice, we should not assume this to be the case, and the code will currently Oops if we do. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NLM: Fix the NLM_GRANTED callback checksTrond Myklebust2006-02-14
| | | | | | | | | | | | | | | | | | | | If 2 threads attached to the same process are blocking on different locks on different files (maybe even on different servers) but have the same lock arguments (i.e. same offset+length - actually quite common, since most processes try to lock the entire file) then the first GRANTED call that wakes one up will also wake the other. Currently when the NLM_GRANTED callback comes in, lockd walks the list of blocked locks in search of a match to the lock that the NLM server has granted. Although it checks the lock pid, start and end, it fails to check the filehandle and the server address. By checking the filehandle and server IP address, we ensure that this only happens if the locks truly are referencing the same file. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* NLM: Ensure that nlmclnt_cancel_callback() doesn't loop foreverTrond Myklebust2006-02-01
| | | | | | | | | | | | If the server returns NLM_LCK_DENIED_NOLOCKS, we currently retry the entire NLM_CANCEL request. This may end up looping forever unless the server changes its mind (why would it do that, though?). Ensure that we limit the number of retries (to 3). See bug# 5957 in bugzilla.kernel.org. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: Fix arguments to NLM_CANCEL callTrond Myklebust2006-02-01
| | | | | | | | | | | The OpenGroup docs state that the arguments "block", "exclusive" and "alock" must exactly match the arguments for the lock call that we are trying to cancel. Currently, "block" is always set to false, which is wrong. See bug# 5956 on bugzilla.kernel.org. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] Unlinline a bunch of other functionsArjan van de Ven2006-01-14
| | | | | | | | | | | Remove the "inline" keyword from a bunch of big functions in the kernel with the goal of shrinking it by 30kb to 40kb Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Acked-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* SUNRPC: get rid of cl_chattyChuck Lever2006-01-06
| | | | | | | | | | | | Clean up: Every ULP that uses the in-kernel RPC client, except the NLM client, sets cl_chatty. There's no reason why NLM shouldn't set it, so just get rid of cl_chatty and always be verbose. Test-plan: Compile with CONFIG_NFS enabled. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: new interface to force an RPC rebindChuck Lever2006-01-06
| | | | | | | | | | | | | | | We'd like to hide fields in rpc_xprt and rpc_clnt from upper layer protocols. Start by creating an API to force RPC rebind, replacing logic that simply sets cl_port to zero. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. NFSv2/3 and NFSv4 mounting should be carefully checked. Probably need to rig a server where certain services aren't running, or that returns an error for some typical operation. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: fix parsing of sm notify procedureJ. Bruce Fields2006-01-06
| | | | | | | | | | The procedure that decodes statd sm_notify call seems to be skipping a few arguments. How did this ever work? >From folks at Polyserve. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: Further cancel fixesJ. Bruce Fields2006-01-06
| | | | | | | | | | | | | | | | | If the server receives an NLM cancel call and finds no waiting lock to cancel, then chances are the lock has already been applied, and the client just hadn't yet processed the NLM granted callback before it sent the cancel. The Open Group text, for example, perimts a server to return either success (LCK_GRANTED) or failure (LCK_DENIED) in this case. But returning an error seems more helpful; the client may be able to use it to recognize that a race has occurred and to recover from the race. So, modify the relevant functions to return an error in this case. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: clean up nlmsvc_delete_blockJ. Bruce Fields2006-01-06
| | | | | | | The fl_next check here is superfluous (and possibly a layering violation). Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: don't unlock on cancel requestsJ. Bruce Fields2006-01-06
| | | | | | | | | | | | | | | | | | | | Currently when lockd gets an NLM_CANCEL request, it also does an unlock for the same range. This is incorrect. The Open Group documentation says that "This procedure cancels an *outstanding* blocked lock request." (Emphasis mine.) Also, consider a client that holds a lock on the first byte of a file, and requests a lock on the entire file. If the client cancels that request (perhaps because the requesting process is signalled), the server shouldn't apply perform an unlock on the entire file, since that will also remove the previous lock that the client was already granted. Or consider a lock request that actually *downgraded* an exclusive lock to a shared lock. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: Clean up nlmsvc_grant_reply lockingJ. Bruce Fields2006-01-06
| | | | | | | | | Slightly simpler logic here makes it more trivial to verify that the up's and down's are balanced here. Break out an assignment from a conditional while we're at it. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* SUNRPC: Ensure that SIGKILL will always terminate a synchronous RPC call.Trond Myklebust2006-01-06
| | | | | | | ...and make sure that the "intr" flag also enables SIGHUP and SIGTERM to interrupt RPC calls too (as per the Solaris implementation). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* RPC: Clean up RPC task structureTrond Myklebust2006-01-06
| | | | | | | | | | Shrink the RPC task structure. Instead of storing separate pointers for task->tk_exit and task->tk_release, put them in a structure. Also pass the user data pointer as a parameter instead of passing it via task->tk_calldata. This enables us to nest callbacks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NLM: Fix Oops in nlmclnt_mark_reclaim()Trond Myklebust2005-12-19
| | | | | | | When mixing -olock and -onolock mounts on the same client, we have to check that fl->fl_u.nfs_fl.owner is set before dereferencing it. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] kfree cleanup: fsJesper Juhl2005-11-07
| | | | | | | | | | This is the fs/ part of the big kfree cleanup patch. Remove pointless checks for NULL prior to calling kfree() in fs/. Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* NFS,SUNRPC,NLM: fix unused variable warnings when CONFIG_SYSCTL is disabledChuck Lever2005-11-04
| | | | | | | | | | | Fix some dprintk's so that NLM, NFS client, and RPC client compile cleanly if CONFIG_SYSCTL is disabled. Test plan: Compile kernel with CONFIG_NFS enabled and CONFIG_SYSCTL disabled. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] RPC: remove xprt->nocongChuck Lever2005-09-23
| | | | | | | | | | | Get rid of the "xprt->nocong" variable. Test-plan: Use WAN simulation to cause sporadic bursty packet loss with UDP mounts. Look for significant regression in performance or client stability. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] RPC: get rid of xprt->streamChuck Lever2005-09-23
| | | | | | | | | | | | Now we can fix up the last few places that use the "xprt->stream" variable, and get rid of it from the rpc_xprt structure. Test-plan: Destructive testing (unplugging the network temporarily). Connectathon with UDP and TCP. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] fs: fix-up schedule_timeout() usageNishanth Aravamudan2005-09-10
| | | | | | | | | | | Use schedule_timeout_{,un}interruptible() instead of set_current_state()/schedule_timeout() to reduce kernel size. Also use helper functions to convert between human time units and jiffies rather than constant HZ division to avoid rounding errors. Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] NFS: procfs/sysctl interfaces for lockd do not work on x86_64Steve Dickson2005-07-13
| | | | | | | | | | | Allow the setting of NLM timeouts and grace periods through the proc and sysclt interfaces on x86_64 architectures Signed-off-by: Steve Dickson <steved@redhat.com> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Cleanup patch for process freezingChristoph Lameter2005-06-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Establish a simple API for process freezing defined in linux/include/sched.h: frozen(process) Check for frozen process freezing(process) Check if a process is being frozen freeze(process) Tell a process to freeze (go to refrigerator) thaw_process(process) Restart process frozen_process(process) Process is frozen now 2. Remove all references to PF_FREEZE and PF_FROZEN from all kernel sources except sched.h 3. Fix numerous locations where try_to_freeze is manually done by a driver 4. Remove the argument that is no longer necessary from two function calls. 5. Some whitespace cleanup 6. Clear potential race in refrigerator (provides an open window of PF_FREEZE cleared before setting PF_FROZEN, recalc_sigpending does not check PF_FROZEN). This patch does not address the problem of freeze_processes() violating the rule that a task may only modify its own flags by setting PF_FREEZE. This is not clean in an SMP environment. freeze(process) is therefore not SMP safe! Signed-off-by: Christoph Lameter <christoph@lameter.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] knfsd: lockd: flush signals on shutdownNeilBrown2005-06-24
| | | | | | | | | Silence another annoying "failed to contact portmap (errno -512)" on shutdown. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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