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2006-09-22NFS: Add extra const qualifiersDavid Howells
Add some extra const qualifiers into NFS. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Use the dentry superblock directly in nfs_statfs()David Howells
Use the nominated dentry's superblock directly in the NFS statfs() op to get a file handle, rather than using s_root (which will become a dummy dentry in a future patch). Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Generalise the nfs_client structureDavid Howells
Generalise the nfs_client structure by: (1) Moving nfs_client to a more general place (nfs_fs_sb.h). (2) Renaming its maintenance routines to be non-NFS4 specific. (3) Move those maintenance routines to a new non-NFS4 specific file (client.c) and move the declarations to internal.h. (4) Make nfs_find/get_client() take a full sockaddr_in to include the port number (will be required for NFS2/3). (5) Make nfs_find/get_client() take the NFS protocol version (again will be required to differentiate NFS2, 3 & 4 client records). Also: (6) Make nfs_client construction proceed akin to inodes, marking them as under construction and providing a function to indicate completion. (7) Make nfs_get_client() wait interruptibly if it finds a client that it can share, but that client is currently being constructed. (8) Make nfs4_create_client() use (6) and (7) instead of locking cl_sem. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Add a server capabilities NFS RPC opDavid Howells
Add a set_capabilities NFS RPC op so that the server capabilities can be set. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Add a lookupfh NFS RPC opDavid Howells
Add a lookup filehandle NFS RPC op so that a file handle can be looked up without requiring dentries and inodes and other VFS stuff when doing an NFS4 pathwalk during mounting. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Return an error when starting the idmapping pipeDavid Howells
Return an error when starting the idmapping pipe so that we can detect it failing. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Rename nfs_server::nfs4_stateDavid Howells
Rename nfs_server::nfs4_state to nfs_client as it will be used to represent the client state for NFS2 and NFS3 also. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Rename struct nfs4_client to struct nfs_clientDavid Howells
Rename struct nfs4_client to struct nfs_client so that it can become the basis for a general client record for NFS2 and NFS3 in addition to NFS4. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Fix NFS4 callback up/down prototypesDavid Howells
Make the nfs_callback_up()/down() prototypes just do nothing if NFS4 is not enabled. Also make the down function void type since we can't really do anything if it fails. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Disambiguate nfs_stat_to_errno()David Howells
Rename the NFS4 version of nfs_stat_to_errno() so that it doesn't conflict with the common one used by NFS2 and NFS3. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Fix up split of fs/nfs/inode.cDavid Howells
Fix ups for the splitting of the superblock stuff out of fs/nfs/inode.c, including: (*) Move the callback tcpport module param into callback.c. (*) Move the idmap cache timeout module param into idmap.c. (*) Changes to internal.h: (*) namespace-nfs4.c was renamed to nfs4namespace.c. (*) nfs_stat_to_errno() is in nfs2xdr.c, not nfs4xdr.c. (*) nfs4xdr.c is contingent on CONFIG_NFS_V4. (*) nfs4_path() is only uses if CONFIG_NFS_V4 is set. Plus also: (*) The sec_flavours[] table should really be const. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Add dentry materialisation opDavid Howells
The attached patch adds a new directory cache management function that prepares a disconnected anonymous function to be connected into the dentry tree. The anonymous dentry is transferred the name and parentage from another dentry. The following changes were made in [try #2]: (*) d_materialise_dentry() now switches the parentage of the two nodes around correctly when one or other of them is self-referential. The following changes were made in [try #7]: (*) d_instantiate_unique() has had the interior part split out as function __d_instantiate_unique(). Callers of this latter function must be holding the appropriate locks. (*) _d_rehash() has been added as a wrapper around __d_rehash() to call it with the most obvious hash list (the one from the name). d_rehash() now calls _d_rehash(). (*) d_materialise_dentry() is now __d_materialise_dentry() and is static. (*) d_materialise_unique() added to perform the combination of d_find_alias(), d_materialise_dentry() and d_add_unique() that the NFS client was doing twice, all within a single dcache_lock critical section. This reduces the number of times two different spinlocks were being accessed. The following further changes were made: (*) Add the dentries onto their parents d_subdirs lists. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Add an ACCESS cache memory shrinkerTrond Myklebust
A pinned inode may in theory end up filling memory with cached ACCESS calls. This patch ensures that the VM may shrink away the cache in these particular cases. The shrinker works by iterating through the list of inodes on the global nfs_access_lru_list, and removing the least recently used access cache entry until it is done (or until the entire cache is empty). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Add a global LRU list for the ACCESS cacheTrond Myklebust
...in order to allow the addition of a memory shrinker. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22NFS: Add a new ACCESS rpc call cache to the linux nfs clientTrond Myklebust
The current access cache only allows one entry at a time to be cached for each inode. Add a per-inode red-black tree in order to allow more than one to be cached at a time. Should significantly cut down the time spent in path traversal for shared directories such as ${PATH}, /usr/share, etc. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-09-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: [CIFS] statfs for cifs unix extensions no longer experimental [CIFS] New POSIX locking code not setting rc properly to zero on successful [CIFS] Support deep tree mounts (e.g. mounts to //server/share/path)
2006-09-22Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgartLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart: [AGPGART] Rework AGPv3 modesetting fallback. [AGPGART] Add suspend callback for i965 [AGPGART] Fix number of aperture sizes in 830 gart structs. [AGPGART] Intel 965 Express support. [AGPGART] agp.h: constify struct agp_bridge_data::version [AGPGART] const'ify VIA AGP PCI table. [AGPGART] CONFIG_PM=n slim: drivers/char/agp/intel-agp.c [AGPGART] CONFIG_PM=n slim: drivers/char/agp/efficeon-agp.c [AGPGART] Const'ify the agpgart driver version. [AGPGART] remove private page protection map
2006-09-22Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreqLinus Torvalds
* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq: [CPUFREQ] sw_any_bug_dmi_table can be used on resume, so it isn't initdata [CPUFREQ] Fix some more CPU hotplug locking. [CPUFREQ] Workaround for BIOS bug in software coordination of frequency [CPUFREQ] Longhaul - Add voltage scaling to driver [CPUFREQ] Fix sparse warning in ondemand [CPUFREQ] make drivers/cpufreq/cpufreq_ondemand.c:powersave_bias_target() static [CPUFREQ] Longhaul - Add ignore_latency option [CPUFREQ] Longhaul - Disable arbiter [CPUFREQ][2/2] ondemand: updated add powersave_bias tunable [CPUFREQ][1/2] ondemand: updated tune for hardware coordination [CPUFREQ] Fix typo.
2006-09-22[PATCH] fallout from hcd-core patchAl Viro
missing le16_to_cpu() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] fix the survivors of fbcon_vbl_handler() renamingAl Viro
In |Author: James Simmons <jsimmons@kozmo.(none)> |Date: Thu Mar 13 22:37:08 2003 -0800 | | [FBCON] Cursor handling clean up. I nuked several static variables. we have -static void fbcon_vbl_handler(int irq, void *dummy, struct pt_regs *fp) +static void fb_vbl_handler(int irq, void *dev_id, struct pt_regs *fp) and 3 years later a couple of instances missed back then still remains there. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] sun4: fix sbus_setup_iommu()Al Viro
iommu_init() and iounit_init() are never called for sun4, but that's not enough - these calls should be ifdefed out since the functions in question simply do not exist for CONFIG_SUN4 kernel. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] asm/backlight.h is ppc-onlyAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] sanitize frv archcleanAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] aoa is pmac-onlyAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] memcpy_fromio() missing in istallionAl Viro
memcpy() from iomem is a bad thing... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] fix ancient breakage in ebus_init()Al Viro
Back when pci_dev had base_address[], loop of form base = &...->base_address[0]; for (.....) { ... *base++ = addr; } was fine, but when that array got spread in ->resource[...].start replacing the initialization with base = &...->resource[0].start; was not a sufficient modification. IOW this code got broken for cases when there had been more than one resource to fill. All way back in 2.3.41-pre3... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[PATCH] fix missing ifdefs in syscall classes hookup for generic targetsAl Viro
several targets have no ....at() family and m32r calls its only chown variant chown32(), with __NR_chown being undefined. creat(2) is also absent in some targets. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-22[CPUFREQ] sw_any_bug_dmi_table can be used on resume, so it isn't initdataJeremy Fitzhardinge
sw_any_bug_dmi_table can be used on resume, so it isn't initdata. Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-22[CPUFREQ] Fix some more CPU hotplug locking.Dave Jones
Lukewarm IQ detected in hotplug locking BUG: warning at kernel/cpu.c:38/lock_cpu_hotplug() [<b0134a42>] lock_cpu_hotplug+0x42/0x65 [<b02f8af1>] cpufreq_update_policy+0x25/0xad [<b0358756>] kprobe_flush_task+0x18/0x40 [<b0355aab>] schedule+0x63f/0x68b [<b01377c2>] __link_module+0x0/0x1f [<b0119e7d>] __cond_resched+0x16/0x34 [<b03560bf>] cond_resched+0x26/0x31 [<b0355b0e>] wait_for_completion+0x17/0xb1 [<f965c547>] cpufreq_stat_cpu_callback+0x13/0x20 [cpufreq_stats] [<f9670074>] cpufreq_stats_init+0x74/0x8b [cpufreq_stats] [<b0137872>] sys_init_module+0x91/0x174 [<b0102c81>] sysenter_past_esp+0x56/0x79 As there are other places that call cpufreq_update_policy without the hotplug lock, it seems better to keep the hotplug locking at the lower level for the time being until this is revamped. Signed-off-by: Dave Jones <davej@redhat.com>
2006-09-22Merge branch 'for-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband: (65 commits) IB: Fix typo in kerneldoc for ib_set_client_data() IPoIB: Add some likely/unlikely annotations in hot path IPoIB: Remove unused include of vmalloc.h IPoIB: Rejoin all multicast groups after a port event IPoIB: Create MCGs with all attributes required by RFC IB/sa: fix ib_sa_selector names IB/iser: INFINIBAND_ISER depends on INET IB/mthca: Simplify calls to mthca_cq_clean() RDMA/cma: Document rdma_accept() error handling IB/mthca: Recover from catastrophic errors RDMA/cma: Document rdma_destroy_id() function IB/cm: Do not track remote QPN in timewait state IB/sa: Require SA registration IPoIB: Refactor completion handling IB/iser: Do not use FMR for a single dma entry sg IB/iser: fix some debug prints IB/iser: make FMR "page size" be 4K and not PAGE_SIZE IB/iser: Limit the max size of a scsi command IB/iser: fix a check of SG alignment for RDMA RDMA/cma: Protect against adding device during destruction ...
2006-09-22Merge branch 'upstream-linus' of ↵Linus Torvalds
master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: [netdrvr] mv643xx_eth: fix obvious typo, which caused build breakage [netdrvr] lp486e: fix typo
2006-09-22IB: Fix typo in kerneldoc for ib_set_client_data()Krishna Kumar
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IPoIB: Add some likely/unlikely annotations in hot pathEli Cohen
Signed-off-by: Eli Cohen <eli@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IPoIB: Remove unused include of vmalloc.hDotan Barak
IPoIB doesn't use anything from <linux/vmalloc.h>, so don't include it. Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IPoIB: Rejoin all multicast groups after a port eventEli Cohen
When ipoib_ib_dev_flush() is called because of a port event, the driver needs to rejoin all multicast groups, since the flush will call ipoib_mcast_dev_flush() (via ipoib_ib_dev_down()). Otherwise no (non-broadcast) multicast groups will be rejoined until the networking core calls ->set_multicast_list again, and so multicast reception will be broken for potentially a long time. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IPoIB: Create MCGs with all attributes required by RFCRoland Dreier
RFC 4391 ("Transmission of IP over InfiniBand (IPoIB)") says: If the IB multicast group does not already exist, one must be created first with the IPoIB link MTU. The MGID MUST use the same P_Key, Q_Key, SL, MTU, and HopLimit as those used in the broadcast-GID. The rest of attributes SHOULD follow the values used in the broadcast-GID as well. However, the current IPoIB driver is only setting the attributes required by the InfiniBand spec to create a multicast group, so in particular the MTU and HopLimit are not being set. Add these attributes when creating MCGs, and also set the Rate attribute, since IPoIB pays attention to that attribute as well. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/sa: fix ib_sa_selector namesMichael S. Tsirkin
Relevant SA queries are actually "greater than" / "less than", not "greater than or equal" / "less than or equal" as the names imply. (See IB spec 1.2 Vol 1, 15.2.5.16 PATHRECORD/Table 205 PathRecord) Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: INFINIBAND_ISER depends on INETRoland Dreier
iSER won't build without CONFIG_INET enabled, so make Kconfig reflect that. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/mthca: Simplify calls to mthca_cq_clean()Roland Dreier
If a QP has separate send and receive CQs, then the send CQ will never have receive completions from that QP in it. So when cleaning the send CQ, there's no need to pass in an SRQ pointer, even if the QP is attached to an SRQ. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22RDMA/cma: Document rdma_accept() error handlingOr Gerlitz
Document the reject sending and modifying QP to error done in rdma_accept(). Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/mthca: Recover from catastrophic errorsJack Morgenstein
Trigger device remove and then add when a catastrophic error is detected in hardware. This, in turn, will cause a device reset, which we hope will recover from the catastrophic condition. Since this might interefere with debugging the root cause, add a module option to suppress this behaviour. Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22RDMA/cma: Document rdma_destroy_id() functionOr Gerlitz
Clarify that rdma_destroy_id cancels outstanding asynchronous operations on the Associated id. Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/cm: Do not track remote QPN in timewait stateMichael S. Tsirkin
Do not track remote QPN in TimeWait state, since QP is not connected. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/sa: Require SA registrationMichael S. Tsirkin
Require users to register with SA module, to prevent the sa_query module text from going away while an SA query callback is still running. Update all in-tree users for the new interface. Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IPoIB: Refactor completion handlingRoland Dreier
Split up ipoib_ib_handle_wc() into ipoib_ib_handle_rx_wc() and ipoib_ib_handle_tx_wc() to make the code easier to read. This will also help implement NAPI in the future. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: Do not use FMR for a single dma entry sgErez Zilber
Fast Memory Registration (fmr) is used to register for rdma an sg whose elements are not linearly sequential after dma mapping. The IB verbs layer provides an "all dma memory MR (memory region)" which can be used for RDMA-ing a dma linearly sequential buffer. Change the code to use the dma mr instead of doing fmr when dma mapping produces a single dma entry sg. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: fix some debug printsErez Zilber
fix and add some debug prints related to iser handling of memory for rdma. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: make FMR "page size" be 4K and not PAGE_SIZEErez Zilber
As iser is able to use at most one rdma operation for the execution of a scsi command, and registration of the sg associated with scsi command has its restrictions, the code checks if an sg is "aligned for rdma". Alignment for rdma is measured in "fmr page" units whose possible resolutions are different between HCAs and can be smaller, equal or bigger to the system page size. When the system page size is bigger than 4KB (eg the default with ia64 kernels) there a bigger chance that an sg would be aligned for rdma if the fmr page size is 4KB. Change the code to create FMR whose pages are of size 4KB and to take that into account when processing the sg. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: Limit the max size of a scsi commandErez Zilber
Currently, the data length of a command coming down from scsi-ml is limited only by the size of its sg list (sg_tablesize). The max data length may be different for different page size values. By setting max_sectors, we limit the data length to max_sectors*512 bytes. Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2006-09-22IB/iser: fix a check of SG alignment for RDMAErez Zilber
dma mapping may include a "compaction" of the sg associated with scsi command. Hence, the size of the maximal prefix of the SG which is aligned for rdma must be compared against the length of the dma mapped sg (mem->dma_nents) and not against the size of it before it was mapped (mem->size). Signed-off-by: Erez Zilber <erezz@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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