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| * | SUNRPC: Allow rpc_auth to run clean up before the rpc_client is destroyedTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | RPCSEC_GSS needs to be able to send NULL RPC calls to the server in order to free up any remaining GSS contexts. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Convert gss_ctx_lock to an RCU lockTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Convert the credential garbage collector into a shrinker callbackTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Give credential cache a local spinlockTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Convert the credcache lookup code to use RCUTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: cleanup rpc credential cache garbage collectionTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Enforce atomic updates of rpc_cred->cr_flagsTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | Convert to the use of atomic bitops... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: replace casts in auth_unix.c with container_of()Trond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Clean up rpc credential initialisationTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | Add a helper rpc_cred_init() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Mark auth and cred operation tables as constant.Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | Also do the same for gss_api operation tables. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Rename rpcauth_destroy() to rpcauth_release()Trond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add the helper function 'rpc_call_null()'Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | Does a NULL RPC call and returns a pointer to the resulting rpc_task. The call may be either synchronous or asynchronous. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Make rpc_ping() staticTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Fix races in rpcauth_createTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | See the FIXME: auth_flavors[] really needs a lock and module refcounting. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Fix a memory leak in gss_create()Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | Fix a memory leak in gss_create() whereby the rpc credcache was not being freed if the rpc_mkpipe() call failed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Fix a typo in unx_create()Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | We want to set the unix_cred_cache.nextgc on the first call to unx_create(), which should be when unix_auth.au_count === 1 Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Fix a memory leak in the auth credcache codeTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The leak only affects the RPCSEC_GSS caches, since they are the only ones that are dynamically allocated... Rename the existing rpcauth_free_credcache() to rpcauth_clear_credcache() in order to better describe its role, then add a new function rpcauth_destroy_credcache() that actually frees the cache in addition to clearing it out. Also move the call to destroy the credcache in gss_destroy() to come before the rpc upcall pipe is unlinked. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add a field to track the number of kernel users of an rpc_pipeTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | This allows us to correctly deduce when we need to remove the pipe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Clean up rpc_pipefs.Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a dentry_ops with a d_delete() method in order to ensure that dentries are removed as soon as the last reference is gone. Clean up rpc_depopulate() so that it only removes files that were created via rpc_populate(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Enable non-exclusive create in rpc_mkpipe()Trond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add a downcall queue to struct rpc_inodeTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | Currently, the downcall queue is tied to the struct gss_auth, which means that different RPCSEC_GSS pseudoflavours must use different upcall pipes. Add a list to struct rpc_inode that can be used instead. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Always match an upcall message in gss_pipe_downcall()Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It used to be possible for an rpc.gssd daemon to stuff the RPC credential cache for any rpc client simply by creating RPCSEC_GSS contexts and then doing downcalls. In practice, no daemons ever made use of this feature. Remove this feature now, since it will be impossible to figure out which mechanism a given context actually matches if we enable more than one gss mechanism to use the same upcall pipe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Remove the gss_auth spinlockTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | We're just as well off using the inode spinlock instead. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add a backpointer from the struct rpc_cred to the rpc_authTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | Cleans up an issue whereby rpcsec_gss uses the rpc_clnt->cl_auth. If we want to be able to add several rpc_auths to a single rpc_clnt, then this abuse must go. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: fix hang due to eventd deadlock...Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Brian Behlendorf writes: The root cause of the NFS hang we were observing appears to be a rare deadlock between the kernel provided usermodehelper API and the linux NFS client. The deadlock can arise because both of these services use the generic linux work queues. The usermodehelper API run the specified user application in the context of the work queue. And NFS submits both cleanup and reconnect work to the generic work queue for handling. Normally this is fine but a deadlock can result in the following situation. - NFS client is in a disconnected state - [events/0] runs a usermodehelper app with an NFS dependent operation, this triggers an NFS reconnect. - NFS reconnect happens to be submitted to [events/0] work queue. - Deadlock, the [events/0] work queue will never process the reconnect because it is blocked on the previous NFS dependent operation which will not complete.` The solution is simply to run reconnect requests on rpciod. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: clean up rpc_call_async/rpc_call_sync/rpc_run_taskTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Move rpc_register_client and friends into net/sunrpc/clnt.cTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Remove redundant calls to rpciod_up()/rpciod_down()Trond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Make create_client() take a reference to the rpciod workqueueTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | Ensures that an rpc_client always has the possibility to send asynchronous RPC calls. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Optimise rpciod_up()Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | Instead of taking the mutex every time we just need to increment/decrement rpciod_users, we can optmise by using atomic_inc_not_zero and atomic_dec_and_test. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Don't create an rpc_pipefs directory before rpc_clone is initialisedTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Remove rpc_clnt->cl_countTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The kref now does most of what cl_count + cl_user used to do. The only remaining role for cl_count is to tell us if we are in a 'shutdown' phase. We can provide that information using a single bit field instead of a full atomic counter. Also rename rpc_destroy_client() to rpc_close_client(), which reflects better what its role is these days. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Make rpc_clone take a reference instead of using cl_countTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Kill rpc_clnt->cl_oneshotTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | Replace it with explicit calls to rpc_shutdown_client() or rpc_destroy_client() (for the case of asynchronous calls). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Kill rpc_clnt->cl_deadTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | Its use is at best racy, and there is only one user (lockd), which has additional locking that makes the whole thing redundant. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Convert rpc_clnt->cl_users to a krefTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Clean up tk_pid allocation and make it locklessTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Add a per-rpc_clnt spinlockTrond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | | | | Use that to protect the rpc_clnt->cl_tasks list instead of using a global lock. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | SUNRPC: Move rpc_task->tk_task list into struct rpc_clntTrond Myklebust2007-07-10
| | | | | | | | | | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | NFSv4: Clean up nfs4_call_async()Trond Myklebust2007-07-10
| | | | | | | | | | | | | | | | | | Use rpc_run_task() instead of doing it ourselves. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* | | Merge branch 'ioat-md-accel-for-linus' of ↵Linus Torvalds2007-07-13
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://lost.foo-projects.org/~dwillia2/git/iop * 'ioat-md-accel-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop: (28 commits) ioatdma: add the unisys "i/oat" pci vendor/device id ARM: Add drivers/dma to arch/arm/Kconfig iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver iop13xx: surface the iop13xx adma units to the iop-adma driver dmaengine: driver for the iop32x, iop33x, and iop13xx raid engines md: remove raid5 compute_block and compute_parity5 md: handle_stripe5 - request io processing in raid5_run_ops md: handle_stripe5 - add request/completion logic for async expand ops md: handle_stripe5 - add request/completion logic for async read ops md: handle_stripe5 - add request/completion logic for async check ops md: handle_stripe5 - add request/completion logic for async compute ops md: handle_stripe5 - add request/completion logic for async write ops md: common infrastructure for running operations with raid5_run_ops md: raid5_run_ops - run stripe operations outside sh->lock raid5: replace custom debug PRINTKs with standard pr_debug raid5: refactor handle_stripe5 and handle_stripe6 (v3) async_tx: add the async_tx api xor: make 'xor_blocks' a library routine for use with async_tx dmaengine: make clients responsible for managing channels dmaengine: refactor dmaengine around dma_async_tx_descriptor ...
| * | | dmaengine: make clients responsible for managing channelsDan Williams2007-07-13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current implementation assumes that a channel will only be used by one client at a time. In order to enable channel sharing the dmaengine core is changed to a model where clients subscribe to channel-available-events. Instead of tracking how many channels a client wants and how many it has received the core just broadcasts the available channels and lets the clients optionally take a reference. The core learns about the clients' needs at dma_event_callback time. In support of multiple operation types, clients can specify a capability mask to only be notified of channels that satisfy a certain set of capabilities. Changelog: * removed DMA_TX_ARRAY_INIT, no longer needed * dma_client_chan_free -> dma_chan_release: switch to global reference counting only at device unregistration time, before it was also happening at client unregistration time * clients now return dma_state_client to dmaengine (ack, dup, nak) * checkpatch.pl fixes * fixup merge with git-ioat Cc: Chris Leech <christopher.leech@intel.com> Signed-off-by: Shannon Nelson <shannon.nelson@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: David S. Miller <davem@davemloft.net>
| * | | I/OAT: warning fixAndrew Morton2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | net/ipv4/tcp.c: In function 'tcp_recvmsg': net/ipv4/tcp.c:1111: warning: unused variable 'available' Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Chris Leech <christopher.leech@intel.com>
| * | | I/OAT: Only offload copies for TCP when there will be a context switchChris Leech2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The performance wins come with having the DMA copy engine doing the copies in parallel with the context switch. If there is enough data ready on the socket at recv time just use a regular copy. Signed-off-by: Chris Leech <christopher.leech@intel.com>
* | | | Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6Linus Torvalds2007-07-12
|\ \ \ \ | |_|_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (61 commits) sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes sysfs: make directory dentries and inodes reclaimable sysfs: implement sysfs_get_dentry() sysfs: move sysfs_drop_dentry() to dir.c and make it static sysfs: restructure add/remove paths and fix inode update sysfs: use sysfs_mutex to protect the sysfs_dirent tree sysfs: consolidate sysfs spinlocks sysfs: make kobj point to sysfs_dirent instead of dentry sysfs: implement sysfs_find_dirent() and sysfs_get_dirent() sysfs: implement SYSFS_FLAG_REMOVED flag sysfs: rename sysfs_dirent->s_type to s_flags and make room for flags sysfs: make sysfs_drop_dentry() access inodes using ilookup() sysfs: Fix oops in sysfs_drop_dentry on x86_64 sysfs: use singly-linked list for sysfs_dirent tree sysfs: slim down sysfs_dirent->s_active sysfs: move s_active functions to fs/sysfs/dir.c sysfs: fix root sysfs_dirent -> root dentry association sysfs: use iget_locked() instead of new_inode() sysfs: reorganize sysfs_new_indoe() and sysfs_create() sysfs: fix parent refcounting during rename and move ...
| * | | sysfs: add parameter "struct bin_attribute *" in .read/.write methods for ↵Zhang Rui2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sysfs binary attributes Well, first of all, I don't want to change so many files either. What I do: Adding a new parameter "struct bin_attribute *" in the .read/.write methods for the sysfs binary attributes. In fact, only the four lines change in fs/sysfs/bin.c and include/linux/sysfs.h do the real work. But I have to update all the files that use binary attributes to make them compatible with the new .read and .write methods. I'm not sure if I missed any. :( Why I do this: For a sysfs attribute, we can get a pointer pointing to the struct attribute in the .show/.store method, while we can't do this for the binary attributes. I don't know why this is different, but this does make it not so handy to use the binary attributes as the regular ones. So I think this patch is reasonable. :) Who benefits from it: The patch that exposes ACPI tables in sysfs requires such an improvement. All the table binary attributes share the same .read method. Parameter "struct bin_attribute *" is used to get the table signature and instance number which are used to distinguish different ACPI table binary attributes. Without this parameter, we need to offer different .read methods for different ACPI table binary attributes. This is impossible as there are various ACPI tables on different platforms, and we don't know what they are until they are loaded. Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| * | | sysfs: kill unnecessary attribute->ownerTejun Heo2007-07-11
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sysfs is now completely out of driver/module lifetime game. After deletion, a sysfs node doesn't access anything outside sysfs proper, so there's no reason to hold onto the attribute owners. Note that often the wrong modules were accounted for as owners leading to accessing removed modules. This patch kills now unnecessary attribute->owner. Note that with this change, userland holding a sysfs node does not prevent the backing module from being unloaded. For more info regarding lifetime rule cleanup, please read the following message. http://article.gmane.org/gmane.linux.kernel/510293 (tweaked by Greg to not delete the field just yet, to make it easier to merge things properly.) Signed-off-by: Tejun Heo <htejun@gmail.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | [NET_SCHED]: ematch: module autoloadingPatrick McHardy2007-07-11
| | | | | | | | | | | | | | | Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [TCP]: tcp probe wraparound handling and other changesStephen Hemminger2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Switch from formatting messages in probe routine and copying with kfifo, to using a small circular queue of information and formatting on read. This avoids wraparound issues with kfifo, and saves one copy. Also make sure to state correct license, rather than copying off some other driver I started with. Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | | [RTNETLINK]: rtnl_link: allow specifying initial device addressPatrick McHardy2007-07-11
| | | | | | | | | | | | | | | | | | | | | | | | Drivers need to validate the initial addresses in their netlink attribute validation function or manually reject them if they can't support this. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
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