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* NFS: Fix rename of directory onto empty directoryTrond Myklebust2005-10-18
| | | | | | | | | | If someone tries to rename a directory onto an empty directory, we currently fail and return EBUSY. This patch ensures that we try the rename if both source and target are directories, and that we fail with a correct error of EISDIR if the source is not a directory. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Fix Connectathon locking test failureTrond Myklebust2005-10-18
| | | | | | | | We currently fail Connectathon test 6.10 in the case of 32-bit locks due to incorrect error checking. Also add support for l->l_len < 0 to 64-bit locks. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Ensure that we recover from the OPEN + OPEN_CONFIRM BAD_STATEID raceTrond Myklebust2005-10-18
| | | | | | | | | | | | | If the server is in the unconfirmed OPEN state for a given open owner and receives a second OPEN for the same open owner, it will cancel the state of the first request and set up an OPEN_CONFIRM for the second. This can cause a race that is discussed in rfc3530 on page 181. The following patch allows the client to recover by retrying the original open request. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: If a delegated open fails, ensure that we return the delegationTrond Myklebust2005-10-18
| | | | | | Unless of course the open fails due to permission issues. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Return delegations in case we're changing ACLsTrond Myklebust2005-10-18
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Return delegation upon rename or removal of file.Trond Myklebust2005-10-18
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* VFS: Make link_path_walk set LOOKUP_CONTINUE before calling permission().Trond Myklebust2005-10-18
| | | | | | | | This will allow nfs_permission() to perform additional optimizations when walking the path, by folding the ACCESS(MAY_EXEC) call on the directory into the lookup revalidation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [NFS]: Check that the server returns a valid regular file to our OPEN requestTrond Myklebust2005-10-18
| | | | | | Since it appears that some servers don't... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Eliminate nfsv4 open race...Trond Myklebust2005-10-18
| | | | | | | Make NFSv4 return the fully initialized file pointer with the stateid that it created in the lookup w/intent. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* VFS: Allow the filesystem to return a full file pointer on open intentTrond Myklebust2005-10-18
| | | | | | | | | This is needed by NFSv4 for atomicity reasons: our open command is in fact a lookup+open, so we need to be able to propagate open context information from lookup() into the resulting struct file's private_data field. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Fix up a race in the NFS implementation of GETLKTrond Myklebust2005-10-18
| | | | | | | ...and fix a memory corruption bug due to improper use of memcpy() on a struct file_lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Fix up handling of open_to_lock sequence idsTrond Myklebust2005-10-18
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Make NFS clean up byte range locks asynchronouslyTrond Myklebust2005-10-18
| | | | | | Currently we fail to do so if the process was signalled. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add missing handling of OPEN_CONFIRM requests on CLAIM_DELEGATE_CUR.Trond Myklebust2005-10-18
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Remove nfs4_client->cl_sem from close() pathTrond Myklebust2005-10-18
| | | | | | | | | | We no longer need to worry about collisions between close() and the state recovery code, since the new close will automatically recheck the file state once it is done waiting on its sequence slot. Ditto for the nfs4_proc_locku() procedure. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Remove obsolete state_owner and lock_owner semaphoresTrond Myklebust2005-10-18
| | | | | | | OPEN, CLOSE, etc no longer need these semaphores to ensure ordering of requests. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Fix a potential CLOSE raceTrond Myklebust2005-10-18
| | | | | | | | | | Once the state_owner and lock_owner semaphores get removed, it will be possible for other OPEN requests to reopen the same file if they have lower sequence ids than our CLOSE call. This patch ensures that we recheck the file state once nfs_wait_on_sequence() has completed waiting. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFSv4: Add functions to order RPC callsTrond Myklebust2005-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | NFSv4 file state-changing functions such as OPEN, CLOSE, LOCK,... are all labelled with "sequence identifiers" in order to prevent the server from reordering RPC requests, as this could cause its file state to become out of sync with the client. Currently the NFS client code enforces this ordering locally using semaphores to restrict access to structures until the RPC call is done. This, of course, only works with synchronous RPC calls, since the user process must first grab the semaphore. By dropping semaphores, and instead teaching the RPC engine to hold the RPC calls until they are ready to be sent, we can extend this process to work nicely with asynchronous RPC calls too. This patch adds a new list called "rpc_sequence" that defines the order of the RPC calls to be sent. We add one such list for each state_owner. When an RPC call is ready to be sent, it checks if it is top of the rpc_sequence list. If so, it proceeds. If not, it goes back to sleep, and loops until it hits top of the list. Once the RPC call has completed, it can then bump the sequence id counter, and remove itself from the rpc_sequence list, and then wake up the next sleeper. Note that the state_owner sequence ids and lock_owner sequence ids are all indexed to the same rpc_sequence list, so OPEN, LOCK,... requests are all ordered w.r.t. each other. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Merge /home/trondmy/scm/kernel/git/torvalds/linux-2.6Trond Myklebust2005-10-18
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| * [PATCH] aio: revert lock_kiocb()Zach Brown2005-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lock_kiocb() was introduced to serialize retrying and cancellation. In the process of doing so it tried to sleep waiting for KIF_LOCKED while holding the ctx_lock spinlock. Recent fixes have ensured that multiple concurrent retries won't be attempted for a given iocb. Cancel has other problems and has no significant in-tree users that have been complaining about it. So for the immediate future we'll revert sleeping with the lock held and will address proper cancellation and retry serialization in the future. Signed-off-by: Zach Brown <zach.brown@oracle.com> Acked-by: Benjamin LaHaise <bcrl@kvack.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] output of /proc/maps on nommu systems is incompleteDavid McCullough2005-10-17
| | | | | | | | | | | | | | | | | | Currently you do not get all the map entries on nommu systems because the start function doesn't index into the list using the value of "pos". Signed-off-by: David McCullough <davidm@snapgear.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] NFS: Fix Oopsable/unnecessary i_count manipulations in ↵Trond Myklebust2005-10-17
| | | | | | | | | | | | | | | | | | | | | | | | nfs_wait_on_inode() Oopsable since nfs_wait_on_inode() can get called as part of iput_final(). Unnecessary since the caller had better be damned sure that the inode won't disappear from underneath it anyway. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] NFS: Fix cache consistency racesTrond Myklebust2005-10-17
| | | | | | | | | | | | | | | | | | | | | | | | If the data cache has been marked as potentially invalid by nfs_refresh_inode, we should invalidate it rather than assume that changes are due to our own activity. Also ensure that we always start with a valid cache before declaring it to be protected by a delegation. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] nommu build error fixYoshinori Sato2005-10-14
| | | | | | | | | | | | | | | | "proc_smaps_operations" is not defined in case of "CONFIG_MMU=n". Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] binfmt_elf bss padding fixakpm@osdl.org2005-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Nir Tzachar <tzachar@cs.bgu.ac.il> points out that if an ELF file specifies a zero-length bss at a whacky address, we cannot load that binary because padzero() tries to zero out the end of the page at the whacky address, and that may not be writeable. See also http://bugzilla.kernel.org/show_bug.cgi?id=5411 So teach load_elf_binary() to skip the bss settng altogether if the elf file has a zero-length bss segment. Cc: Roland McGrath <roland@redhat.com> Cc: Daniel Jacobowitz <dan@debian.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] nfsacl: Solaris VxFS compatibility fixAndreas Gruenbacher2005-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is a compatibility fix between Linux and Solaris when used with VxFS filesystems: Solaris usually accepts acl entries in any order, but with VxFS it replies with NFSERR_INVAL when it sees a four-entry acl that is not in canonical form. It may also fail with other non-canonical acls -- I can't tell, because that case never triggers: We only send non-canonical acls when we fake up an ACL_MASK entry. Instead of adding fake ACL_MASK entries at the end, inserting them in the correct position makes Solaris+VxFS happy. The Linux client and server sides don't care about entry order. The three-entry-acl special case in which we need a fake ACL_MASK entry was handled in xdr_nfsace_encode. The patch moves this into nfsacl_encode. Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] v9fs: remove additional buffer allocation from v9fs_file_read and ↵Latchesar Ionkov2005-10-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | v9fs_file_write v9fs_file_read and v9fs_file_write use kmalloc to allocate buffers as big as the data buffer received as parameter. kmalloc cannot be used to allocate buffers bigger than 128K, so reading/writing data in chunks bigger than 128k fails. This patch reorganizes v9fs_file_read and v9fs_file_write to allocate only buffers as big as the maximum data that can be sent in one 9P message. Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] relayfs: fix bogus param value in call to vmapTom Zanussi2005-10-10
| | | | | | | | | | | | | | | | | | The third param in this call to vmap shouldn't be GFP_KERNEL, which makes no sense, but rather VM_MAP. Thanks to Al Viro for spotting this. Signed-off-by: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] gfp flags annotations - part 1Al Viro2005-10-08
| | | | | | | | | | | | | | | | | | | | | | | | - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Avoid 'names_cache' memory leak with CONFIG_AUDITSYSCALLLinus Torvalds2005-10-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nameidata "last.name" is always allocated with "__getname()", and should always be free'd with "__putname()". Using "putname()" without the underscores will leak memory, because the allocation will have been hidden from the AUDITSYSCALL code. Arguably the real bug is that the AUDITSYSCALL code is really broken, but in the meantime this fixes the problem people see. Reported by Robert Derr, patch by Rick Lindsley. Acked-by: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] bfs iget() abusesAl Viro2005-10-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | bfs_fill_super() walks the inode table to get the bitmap of free inodes and collect stats. It has no business using iget() for that - it's a lot of extra work, extra icache pollution and more complex code. Switched to walking the damn thing directly. Note: that also allows to kill ->i_dsk_ino in there - separate patch if Tigran can confirm that this field can be zero only for deleted inodes (i.e. something that could only be found during that scan and not by normal lookups). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] bfs endianness annotationsAlexey Dobriyan2005-10-04
| | | | | | | | | | | | Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * NTFS: Fix a 64-bitness bug where a left-shift could overflow a 32-bit variableAnton Altaparmakov2005-10-04
| | | | | | | | | | | | which we now cast to 64-bit first (fs/ntfs/mft.c::map_mft_record_page(). Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
| * NTFS: Fix a stupid bug in __ntfs_bitmap_set_bits_in_run() which caused theAnton Altaparmakov2005-10-04
| | | | | | | | | | | | | | count to become negative and hence we had a wild memset() scribbling all over the system's ram. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
| * [PATCH] fuse: check O_DIRECTMiklos Szeredi2005-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | Check O_DIRECT and return -EINVAL error in open. dentry_open() also checks this but only after the open method is called. This patch optimizes away the unnecessary upcalls in this case. It could be a correctness issue too: if filesystem has open() with side effect, then it should fail before doing the open, not after. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] uml: remove empty hostfs_truncate methodPaolo 'Blaisorblade' Giarrusso2005-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Calling truncate() on hostfs spits a kernel warning "Something isn't implemented here", but it still works fine. Indeed, hostfs i_op->truncate doesn't do anything. But hostfs_setattr() -> set_attr() correctly detects ATTR_SIZE and calls truncate() on the host. So we should be safe (using ftruncate() may be better, in case the file is unlinked on the host, but we aren't sure to have the file open for writing, and reopening it would cause the same races; plus nobody should expect UML to be so careful). So, the warning is wrong, because the current implementation is working. Al, am I correct, and can the warning be therefore dropped? CC: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] aio: avoid extra aio_{read,write} call when ki_left == 0Zach Brown2005-09-30
| | | | | | | | | | | | | | | | | | | | | | | | Recently aio_p{read,write} changed to perform retries internally rather than returning -EIOCBRETRY. This inadvertantly resulted in always calling aio_{read,write} with ki_left at 0 which would in turn immediately return 0. Harmless, but we can avoid this call by checking in the caller. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] aio: remove unlocked task_list test and resulting raceZach Brown2005-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only one of the run or kick path is supposed to put an iocb on the run list. If both of them do it than one of them can end up referencing a freed iocb. The kick path could delete the task_list item from the wait queue before getting the ctx_lock and putting the iocb on the run list. The run path was testing the task_list item outside the lock so that it could catch ki_retry methods that return -EIOCBRETRY *without* putting the iocb on a wait queue and promising to call kick_iocb. This unlocked check could then race with the kick path to cause both to try and put the iocb on the run list. The patch stops the run path from testing task_list by requring that any ki_retry that returns -EIOCBRETRY *must* guarantee that kick_iocb() will be called in the future. aio_p{read,write}, the only in-tree -EIOCBRETRY users, are updated. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] aio: lock around kiocbTryKick()Zach Brown2005-09-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Only one of the run or kick path is supposed to put an iocb on the run list. If both of them do it than one of them can end up referencing a freed iocb. The kick patch could set the Kicked bit before acquiring the ctx_lock and putting the iocb on the run list. The run path, while holding the ctx_lock, could see this partial kick and mistake it for a kick that was deferred while it was doing work with the run_list NULLed out. It would then race with the kick thread to add the iocb to the run list. This patch moves the kick setting under the ctx_lock so that only one of the kick or run path queues the iocb on the run list, as intended. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Benjamin LaHaise <bcrl@linux.intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] missing ERR_PTR in 9fsAl Viro2005-09-30
| | | | | | | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] readv/writev syscalls are not checked by lsmKostik Belousov2005-09-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | it seems that readv(2)/writev(2) syscalls do not call file_permission callback. Looks like this is overlook. I have filled the issue into redhat bugzilla as https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169433 and got the recommendation to post this on lsm mailing list. The following trivial patch solves the problem. Signed-off-by: Kostik Belousov <kostikbel@gmail.com> Signed-off-by: Chris Wright <chrisw@osdl.org>
| * [PATCH] epoll: handle timeout overflowDavide Libenzi2005-09-28
| | | | | | | | | | | | | | | | Handle the timeout upper boundary for epoll. Signed-off-by: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] v9fs: fix races in fid allocationLatchesar Ionkov2005-09-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fid management cleanup. The patch attempts to fix the races in dentry's fid management. Dentries don't keep the opened fids anymore, they are moved to the file structs. Ideally there should be no more than one fid with fidcreate equal to zero in the dentry's list of fids. v9fs_fid_create initializes the important fields (fid, fidcreated) before v9fs_fid is added to the list. v9fs_fid_lookup returns only fids that are not created by v9fs_create. v9fs_fid_get_created returns the fid created by the same process by v9fs_create (if any) and removes it from dentry's list Signed-off-by: Latchesar Ionkov <lucho@ionkov.net> Cc: Eric Van Hensbergen <ericvh@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] Fix ext3_new_inode() failure pathsChris Sykes2005-09-28
| | | | | | | | | | | | | | | | | | | | | | Fix failure paths in ext3_new_inode() and clean up duplicated code: - DQUOT_DROP() was not being called if ext3_init_security() failed. Signed-off-by: Chris Sykes <chris@sigsegv.plus.com> Cc: Stephen Smalley <sds@epoch.ncsc.mil> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] Fix ext2_new_inode() failure pathsChris Sykes2005-09-28
| | | | | | | | | | | | | | | | | | | | | | Fix failure paths in ext2_new_inode() and clean up duplicated code: - DQUOT_DROP() was not being called if ext2_init_security() failed. Signed-off-by: Chris Sykes <chris@sigsegv.plus.com> Cc: Stephen Smalley <sds@epoch.ncsc.mil> Cc: Jan Kara <jack@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] fuse: check reserved node ID valuesMiklos Szeredi2005-09-28
| | | | | | | | | | | | | | | | | | This patch checks reserved node ID values returned by lookup and creation operations. In case one of the reserved values is sent, return -EIO. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] fuse: add required version infoMiklos Szeredi2005-09-28
| | | | | | | | | | | | | | | | | | | | | | | | Add information about required version of the userspace library/utilities to Documentation/Changes. Also add pointer to this and to FUSE documentation from Kconfig. Thanks to Anton Altaparmakov for the reminder. Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * NTFS: Re-fix sparse warnings in a more correct way, i.e. don't use an enum withAnton Altaparmakov2005-09-26
| | | | | | | | | | | | different types in it but #define the two constants instead. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
| * Merge branch 'master' of /home/src/linux-2.6/Anton Altaparmakov2005-09-26
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| | * [PATCH] cifs: Add support for suspendSteve French2005-09-23
| | | | | | | | | | | | | | | | | | | | | | | | cifsd had been preventing software suspend from completing. Signed-off-by: pavel@suse.de Signed-off-by: Steve French <sfrench@us.ibm.com> lightly modified Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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