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2005-10-20NFSv4: Fix up locking for nfs4_state_ownerTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-20NFSv4: Final tweak to sequence idTrond Myklebust
Sacrifice queueing fairness for performance. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS: krb5 cleanupJ. Bruce Fields
Remove some senseless wrappers. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS remove all qop parametersJ. Bruce Fields
Not only are the qop parameters that are passed around throughout the gssapi unused by any currently implemented mechanism, but there appears to be some doubt as to whether they will ever be used. Let's just kill them off for now. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS: Add support for privacy to krb5 rpcsec_gss mechanism.J. Bruce Fields
Add support for privacy to the krb5 rpcsec_gss mechanism. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS: krb5 pre-privacy cleanupJ. Bruce Fields
The code this was originally derived from processed wrap and mic tokens using the same functions. This required some contortions, and more would be required with the addition of xdr_buf's, so it's better to separate out the two code paths. In preparation for adding privacy support, remove the last vestiges of the old wrap token code. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS: Simplify rpcsec_gss crypto codeJ. Bruce Fields
Factor out some code that will be shared by privacy crypto routines Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS: client-side privacy supportJ. Bruce Fields
Add the code to the client side to handle privacy. This is dead code until we actually add privacy support to krb5. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPCSEC_GSS: cleanup au_rslack calculationJ. Bruce Fields
Various xdr encode routines use au_rslack to guess where the reply argument will end up, so we can set up the xdr_buf to recieve data into the right place for zero copy. Currently we calculate the au_rslack estimate when we check the verifier. Normally this only depends on the verifier size. In the integrity case we add a few bytes to allow for a length and sequence number. It's a bit simpler to calculate only the verifier size when we check the verifier, and delay the full calculation till we unwrap. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18SUNRPC: Retry wrap in case of memory allocation failure.J. Bruce Fields
For privacy we need to allocate extra pages to hold encrypted page data when wrapping requests. This allocation may fail, and we handle that case by waiting and retrying. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18SUNRPC: Provide a callback to allow free pages allocated during xdr encodingJ. Bruce Fields
For privacy, we need to allocate pages to store the encrypted data (passed in pages can't be used without the risk of corrupting data in the page cache). So we need a way to free that memory after the request has been transmitted. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18SUNRPC: Add support for privacy to generic gss-api code.J. Bruce Fields
Add support for privacy to generic gss-api code. This is dead code until we have both a mechanism that supports privacy and code in the client or server that uses it. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix acl buffer sizeJ. Bruce Fields
resp_len is passed in as buffer size to decode routine; make sure it's set right in case where userspace provides less than a page's worth of buffer. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: handle no acl attrJ. Bruce Fields
Stop handing garbage to userspace in the case where a weird server clears the acl bit in the getattr return (despite the fact that they've already claimed acl support.) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18RPC: stops the release_pipe() funtion from being called twiceSteve Dickson
This patch stops the release_pipe() funtion from being called twice by invalidating the ops pointer in the rpc_inode when rpc_pipe_release() is called. Signed-off-by: Steve Dickson <steved@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix an oopsable condition in nfs_free_seqidTrond Myklebust
Storing a pointer to the struct rpc_task in the nfs_seqid is broken since the nfs_seqid may be freed well after the task has been destroyed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18Merge /home/trondmy/scm/kernel/git/torvalds/linux-2.6Trond Myklebust
2005-10-18NFS: Fix rename of directory onto empty directoryTrond Myklebust
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>
2005-10-18Fix Connectathon locking test failureTrond Myklebust
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>
2005-10-18NFSv4: Ensure that we recover from the OPEN + OPEN_CONFIRM BAD_STATEID raceTrond Myklebust
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>
2005-10-18NFSv4: If a delegated open fails, ensure that we return the delegationTrond Myklebust
Unless of course the open fails due to permission issues. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Return delegations in case we're changing ACLsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Return delegation upon rename or removal of file.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18VFS: Make link_path_walk set LOOKUP_CONTINUE before calling permission().Trond Myklebust
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>
2005-10-18[NFS]: Check that the server returns a valid regular file to our OPEN requestTrond Myklebust
Since it appears that some servers don't... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Eliminate nfsv4 open race...Trond Myklebust
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>
2005-10-18VFS: Allow the filesystem to return a full file pointer on open intentTrond Myklebust
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>
2005-10-18 NFS: Fix up a race in the NFS implementation of GETLKTrond Myklebust
...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>
2005-10-18NFSv4: Fix up handling of open_to_lock sequence idsTrond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Make NFS clean up byte range locks asynchronouslyTrond Myklebust
Currently we fail to do so if the process was signalled. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Add missing handling of OPEN_CONFIRM requests on CLAIM_DELEGATE_CUR.Trond Myklebust
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Remove nfs4_client->cl_sem from close() pathTrond Myklebust
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>
2005-10-18NFSv4: Remove obsolete state_owner and lock_owner semaphoresTrond Myklebust
OPEN, CLOSE, etc no longer need these semaphores to ensure ordering of requests. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18NFSv4: Fix a potential CLOSE raceTrond Myklebust
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>
2005-10-18NFSv4: Add functions to order RPC callsTrond Myklebust
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>
2005-10-18RPC: allow call_encode() to delay transmission of an RPC call.Trond Myklebust
Currently, call_encode will cause the entire RPC call to abort if it returns an error. This is unnecessarily rigid, and gets in the way of attempts to allow the NFSv4 layer to order RPC calls that carry sequence ids. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18SUNRPC: Retry rpcbind requests if the server's portmapper isn't upChuck Lever
After a server crash/reboot, rebinding should always retry, otherwise requests on "hard" mounts will fail when they shouldn't. Test plan: Run a lock-intensive workload against a server while rebooting the server repeatedly. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2005-10-18Merge /home/trondmy/scm/kernel/git/torvalds/linux-2.6Trond Myklebust
2005-10-18[PATCH] vesafb: Fix display corruption on display blankAntonino A. Daplas
Reported by: Bob Tracy <rct@gherkin.frus.com> "...I've got a Toshiba notebook (730XCDT -- Pentium 150MMX) for which I'm using the Vesa FB driver. When the machine has been idle for some time and the driver attempts to powerdown the display, rather than the display going blank, it goes gray with several strange lines. When I hit the "shift" key or other-wise wake up the display, the old video state is not fully restored..." vesafb recently added a blank method which has only 2 states, powerup and powerdown. The powerdown state is used for all blanking levels, but in his case, powerdown does not work correctly for higher levels of display powersaving. Thus, for intermediate power levels, use software blanking, and use only hardware blanking for an explicit powerdown. Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-18Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
2005-10-18Merge master.kernel.org:/home/rmk/linux-2.6-serialLinus Torvalds
2005-10-18Add some basic .gitignore filesLinus Torvalds
This still leaves driver and architecture-specific subdirectories alone, but gets rid of the bulk of the "generic" generated files that we should ignore. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-18[ARM] 3021/1: Interrupt 0 bug fix for ixp4xxKenneth Tan
Patch from Kenneth Tan The get_irqnr_and_base subroutine of ixp4xx does not take interrupt 0 condition into account properly. We should not perform "subs" here. The Z flag will be set when interrupt 0 occur, which resulting "movne r1, sp" in the caller routine (irq_handler) not being executed. When interrupt 0 occur: o if CONFIG_CPU_IXP46X is not set, "subs" will set the Z flag and return o if CONFIG_CPU_IXP46X is set, codes in upper interrupt handling will be trigerred. But since this is not supper interrupt, the "cmp" in the upper interrupt handling portion will set the Z flag and return Signed-off-by: Kenneth Tan <chong.yin.tan@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18[ARM] 3020/1: Fixes typo error CONFIG_CPU_IXP465, which should be ↵Kenneth Tan
CONFIG_CPU_IXP46X Patch from Kenneth Tan The cpu_is_ixp465 macro in include/asm-arm/arch-ixp4xx/hardware.h is always returning 0 because #ifdef CONFIG_CPU_IXP465 is always false. Signed-off-by: Kenneth Tan <chong.yin.tan@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18[ARM] 3019/1: fix wrong commentsNicolas Pitre
Patch from Nicolas Pitre Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-18[ARM] 3018/1: S3C2410 - check de-referenced device is really a platform deviceBen Dooks
Patch from Ben Dooks Check that the device we are looking at is really a platform device before trying to cast it to one to find out the platform bus number. Thanks to RMK for pointing this out. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-10-17[PATCH] kbuild: Eliminate build error when KALLSYMS not definedMark Rustad
The following build error happens with 2.6.14-rc4 when CONFIG_KALLSYMS is not defined. The error message in a fragment of the output was: CC arch/i386/lib/usercopy.o AR arch/i386/lib/lib.a /bin/sh: line 1: +@: command not found make[3]: warning: jobserver unavailable: using -j1. Add `+' to parent make rule. CHK include/linux/compile.h Signed-off-by: Mark Rustad <mrustad@mac.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-17[PATCH] aio: revert lock_kiocb()Zach Brown
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>
2005-10-17[PATCH] uniput - fix crash on SMPDmitry Torokhov
Only signal completion after marking request slot as free, otherwise other processor can free request structure before we finish using it. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-17[PATCH] Fix /proc/acpi/events around suspendPavel Machek
Fix -EIO on /proc/acpi/events after suspends. This actually breaks suspending by power button in many setups. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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