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2011-06-02dmaengine: shdma: fix a regression: initialise DMA channels for memcpyGuennadi Liakhovetski1-1/+1
A recent patch has introduced a regression, where repeating a memcpy DMA test with shdma module unloading between them skips the DMA channel configuration. Fix this regression by always configuring the channel during its allocation. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31Merge branch 'sh/runtime-pm-misery' into sh-fixes-for-linusPaul Mundt3-21/+10
2011-05-31dmaengine: shdma: Fix up fallout from runtime PM changes.Paul Mundt1-1/+6
The runtime PM changes introduce sh_dmae_rst() wrapping via the runtime_resume helper, depending on dev_get_drvdata() to fetch the platform data needed for the DMAOR initialization default at a time where drvdata hasn't yet been established by the probe path, resulting in general probe misery: Unable to handle kernel NULL pointer dereference at virtual address 000000c4 pc = 8025adee *pde = 00000000 Oops: 0000 [#1] Modules linked in: Pid : 1, Comm: swapper CPU : 0 Not tainted (3.0.0-rc1-00012-g9436b4a-dirty #1456) PC is at sh_dmae_rst+0x28/0x86 PR is at sh_dmae_rst+0x22/0x86 PC : 8025adee SP : 9e803d10 SR : 400080f1 TEA : 000000c4 R0 : 000000c4 R1 : 0000fff8 R2 : 00000000 R3 : 00000040 R4 : 000000f0 R5 : 00000000 R6 : 00000000 R7 : 804f184c R8 : 00000000 R9 : 804dd0e8 R10 : 80283204 R11 : ffffffda R12 : 000000a0 R13 : 804dd18c R14 : 9e803d10 MACH: 00000000 MACL: 00008f20 GBR : 00000000 PR : 8025ade8 Call trace: [<8025ae70>] sh_dmae_runtime_resume+0x24/0x34 [<80283238>] pm_generic_runtime_resume+0x34/0x3c [<80283370>] rpm_callback+0x4a/0x7e [<80283efc>] rpm_resume+0x240/0x384 [<80283f54>] rpm_resume+0x298/0x384 [<8028428c>] __pm_runtime_resume+0x44/0x7c [<8038a358>] __ioremap_caller+0x0/0xec [<80284296>] __pm_runtime_resume+0x4e/0x7c [<8038a358>] __ioremap_caller+0x0/0xec [<80666254>] sh_dmae_probe+0x180/0x6a0 [<802803ae>] platform_drv_probe+0x26/0x2e Fix up the ordering accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31Revert "clocksource: sh_cmt: Runtime PM support"Paul Mundt1-10/+2
This reverts commit 01fa68b58492a5d6708a91c1f474b6a099a9509e. The same note as per the sh_tmu change applies here, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31Revert "clocksource: sh_tmu: Runtime PM support"Paul Mundt1-10/+2
This reverts commit 1b842e91fea9447eff5eb687e28ad61c02f5033e. There is a fundamental ordering race between the early and late probe paths and the runtime PM tie-in that results in __pm_runtime_resume() attempting to take a lock that hasn't been initialized yet (which by proxy also suggests that pm_runtime_init() hasn't yet been run on the device either, making the entire thing unsafe) -- resulting in instant death on SMP or on UP with spinlock debugging enabled: sh_tmu.0: used for clock events sh_tmu.0: used for periodic clock events BUG: spinlock trylock failure on UP on CPU#0, swapper/0 lock: 804db198, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 ... Revert it for now until the ordering issues can be resolved, or we can get some more help from the runtime PM framework to make this possible. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31sh: Fix up asm-generic/ptrace.h fallout.Paul Mundt1-2/+4
There was an ordering issue with regards to instruction_pointer() being used in profile_pc() prior to the asm-generic/ptrace.h include, which subsequently provided the instruction_pointer() definition. In the interest of simplicity we simply open-code the regs->pc deref for the profile_pc() definition instead. The FP functions were also broken due to a lack of a common regs->fp, so provide a common GET_FP() that is safe for both architectures in order to fix up the frame pointer helpers too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31sh64: Move from P1SEG to CAC_ADDR for consistent sync.Paul Mundt1-1/+1
sh64 doesn't define a P1SEGADDR, resulting in a build failure. The proper mapping can be attained for both sh32 and 64 via the CAC_ADDR macro, so switch to that instead. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31sh64: asm/pgtable.h needs asm/mmu.hPaul Mundt1-0/+1
Needed to satisfy the __in_29bit_mode() check. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31sh: asm/tlb.h needs linux/swap.hNobuhiro Iwamatsu1-0/+1
Commit 1e56a56410bb64bce62d44563e35a143fc2d515f introduced the mmu_gather rework for sh, but missed a linux/swap.h include: CC arch/sh/mm/tlb-urb.o In file included from arch/sh/mm/tlb-urb.c:14:0: arch/sh/include/asm/tlb.h: In function '__tlb_remove_page': arch/sh/include/asm/tlb.h:92:2: error: implicit declaration of function 'free_page_and_swap_cache' Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> CC: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-31Merge branch 'master' of ↵Paul Mundt2819-51417/+124392
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-fixes-for-linus
2011-05-29Linux 3.0-rc1Linus Torvalds1-5/+5
.. except there are various scripts that really know that there are three numbers, so it calls itself "3.0.0-rc1". Hopefully by the time the final 3.0 is out, we'll have that extra zero all figured out. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-29Merge branch 'for-linus' of ↵Linus Torvalds6-263/+220
git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ecryptfs/ecryptfs-2.6: eCryptfs: Remove ecryptfs_header_cache_2 eCryptfs: Cleanup and optimize ecryptfs_lookup_interpose() eCryptfs: Return useful code from contains_ecryptfs_marker eCryptfs: Fix new inode race condition eCryptfs: Cleanup inode initialization code eCryptfs: Consolidate inode functions into inode.c
2011-05-29Merge branch 'pnfs-submit' of git://git.open-osd.org/linux-open-osdLinus Torvalds32-279/+3907
* 'pnfs-submit' of git://git.open-osd.org/linux-open-osd: (32 commits) pnfs-obj: pg_test check for max_io_size NFSv4.1: define nfs_generic_pg_test NFSv4.1: use pnfs_generic_pg_test directly by layout driver NFSv4.1: change pg_test return type to bool NFSv4.1: unify pnfs_pageio_init functions pnfs-obj: objlayout_encode_layoutcommit implementation pnfs: encode_layoutcommit pnfs-obj: report errors and .encode_layoutreturn Implementation. pnfs: encode_layoutreturn pnfs: layoutret_on_setattr pnfs: layoutreturn pnfs-obj: osd raid engine read/write implementation pnfs: support for non-rpc layout drivers pnfs-obj: define per-inode private structure pnfs: alloc and free layout_hdr layoutdriver methods pnfs-obj: objio_osd device information retrieval and caching pnfs-obj: decode layout, alloc/free lseg pnfs-obj: pnfs_osd XDR client implementation pnfs-obj: pnfs_osd XDR definitions pnfs-obj: objlayoutdriver module skeleton ...
2011-05-29arm gpio drivers: make them 'depends on ARM'Linus Torvalds1-0/+4
We had a few drivers move from arch/arm into drivers/gpio, but they don't actually compile without the ARM platform headers etc. As a result they were messing up allyesconfig on x86. Make them depend on ARM. Reported-by: Ingo Molnar <mingo@elte.hu> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-29eCryptfs: Remove ecryptfs_header_cache_2Tyler Hicks3-13/+6
Now that ecryptfs_lookup_interpose() is no longer using ecryptfs_header_cache_2 to read in metadata, the kmem_cache can be removed and the ecryptfs_header_cache_1 kmem_cache can be renamed to ecryptfs_header_cache. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
2011-05-29eCryptfs: Cleanup and optimize ecryptfs_lookup_interpose()Tyler Hicks3-105/+88
ecryptfs_lookup_interpose() has turned into spaghetti code over the years. This is an effort to clean it up. - Shorten overly descriptive variable names such as ecryptfs_dentry - Simplify gotos and error paths - Create helper function for reading plaintext i_size from metadata It also includes an optimization when reading i_size from the metadata. A complete page-sized kmem_cache_alloc() was being done to read in 16 bytes of metadata. The buffer for that is now statically declared. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
2011-05-29eCryptfs: Return useful code from contains_ecryptfs_markerTyler Hicks1-16/+10
Instead of having the calling functions translate the true/false return code to either 0 or -EINVAL, have contains_ecryptfs_marker() return 0 or -EINVAL so that the calling functions can just reuse the return code. Also, rename the function to ecryptfs_validate_marker() to avoid callers mistakenly thinking that it returns true/false codes. Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>
2011-05-29eCryptfs: Fix new inode race conditionTyler Hicks5-28/+30
Only unlock and d_add() new inodes after the plaintext inode size has been read from the lower filesystem. This fixes a race condition that was sometimes seen during a multi-job kernel build in an eCryptfs mount. https://bugzilla.kernel.org/show_bug.cgi?id=36002 Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com> Reported-by: David <david@unsolicited.net> Tested-by: David <david@unsolicited.net>
2011-05-29Merge branch 'for_linus' of ↵Linus Torvalds35-1192/+1393
git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86: (43 commits) acer-wmi: support integer return type from WMI methods msi-laptop: fix section mismatch in reference from the function load_scm_model_init acer-wmi: support to set communication device state by new wmid method acer-wmi: allow 64-bits return buffer from WMI methods acer-wmi: check the existence of internal 3G device when set capability platform/x86:delete two unused variables support wlan hotkey on Acer Travelmate 5735Z platform-x86: intel_mid_thermal: Fix memory leak platform/x86: Fix Makefile for intel_mid_powerbtn platform/x86: Simplify intel_mid_powerbtn acer-wmi: Delete out-of-date documentation acerhdf: Clean up includes acerhdf: Drop pointless dependency on THERMAL_HWMON acer-wmi: Update MAINTAINERS wmi: Orphan ACPI-WMI driver tc1100-wmi: Orphan driver acer-wmi: does not allow negative number set to initial device state platform/oaktrail: ACPI EC Extra driver for Oaktrail thinkpad_acpi: Convert printks to pr_<level> thinkpad_acpi: Correct !CONFIG_THINKPAD_ACPI_VIDEO warning ...
2011-05-29mm: Fix boot crash in mm_alloc()Linus Torvalds4-36/+23
Thomas Gleixner reports that we now have a boot crash triggered by CONFIG_CPUMASK_OFFSTACK=y: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<c11ae035>] find_next_bit+0x55/0xb0 Call Trace: [<c11addda>] cpumask_any_but+0x2a/0x70 [<c102396b>] flush_tlb_mm+0x2b/0x80 [<c1022705>] pud_populate+0x35/0x50 [<c10227ba>] pgd_alloc+0x9a/0xf0 [<c103a3fc>] mm_init+0xec/0x120 [<c103a7a3>] mm_alloc+0x53/0xd0 which was introduced by commit de03c72cfce5 ("mm: convert mm->cpu_vm_cpumask into cpumask_var_t"), and is due to wrong ordering of mm_init() vs mm_init_cpumask Thomas wrote a patch to just fix the ordering of initialization, but I hate the new double allocation in the fork path, so I ended up instead doing some more radical surgery to clean it all up. Reported-by: Thomas Gleixner <tglx@linutronix.de> Reported-by: Ingo Molnar <mingo@elte.hu> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-29Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds3-16/+25
* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] mm: fix mmu_gather rework [S390] mm: fix storage key handling
2011-05-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tileLinus Torvalds7-28/+347
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: arch/tile: more /proc and /sys file support
2011-05-29Merge branch 'x86-platform-next' into x86-platformMatthew Garrett35-1192/+1393
2011-05-29Merge branch 'for-2.6.40' of git://linux-nfs.org/~bfields/linuxLinus Torvalds12-199/+323
* 'for-2.6.40' of git://linux-nfs.org/~bfields/linux: (22 commits) nfsd: make local functions static NFSD: Remove unused variable from nfsd4_decode_bind_conn_to_session() NFSD: Check status from nfsd4_map_bcts_dir() NFSD: Remove setting unused variable in nfsd_vfs_read() nfsd41: error out on repeated RECLAIM_COMPLETE nfsd41: compare request's opcnt with session's maxops at nfsd4_sequence nfsd v4.1 lOCKT clientid field must be ignored nfsd41: add flag checking for create_session nfsd41: make sure nfs server process OPEN with EXCLUSIVE4_1 correctly nfsd4: fix wrongsec handling for PUTFH + op cases nfsd4: make fh_verify responsibility of nfsd_lookup_dentry caller nfsd4: introduce OPDESC helper nfsd4: allow fh_verify caller to skip pseudoflavor checks nfsd: distinguish functions of NFSD_MAY_* flags svcrpc: complete svsk processing on cb receive failure svcrpc: take advantage of tcp autotuning SUNRPC: Don't wait for full record to receive tcp data svcrpc: copy cb reply instead of pages svcrpc: close connection if client sends short packet svcrpc: note network-order types in svc_process_calldir ...
2011-05-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dmLinus Torvalds11-124/+144
* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm: dm kcopyd: return client directly and not through a pointer dm kcopyd: reserve fewer pages dm io: use fixed initial mempool size dm kcopyd: alloc pages from the main page allocator dm kcopyd: add gfp parm to alloc_pl dm kcopyd: remove superfluous page allocation spinlock dm kcopyd: preallocate sub jobs to avoid deadlock dm kcopyd: avoid pointless job splitting dm mpath: do not fail paths after integrity errors dm table: reject devices without request fns dm table: allow targets to support discards internally
2011-05-29Merge branch 'nfs-for-2.6.40' of ↵Linus Torvalds12-66/+542
git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.40' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Support for RPC over AF_LOCAL transports SUNRPC: Remove obsolete comment SUNRPC: Use AF_LOCAL for rpcbind upcalls SUNRPC: Clean up use of curly braces in switch cases NFS: Revert NFSROOT default mount options SUNRPC: Rename xs_encode_tcp_fragment_header() nfs,rcu: convert call_rcu(nfs_free_delegation_callback) to kfree_rcu() nfs41: Correct offset for LAYOUTCOMMIT NFS: nfs_update_inode: print current and new inode size in debug output NFSv4.1: Fix the handling of NFS4ERR_SEQ_MISORDERED errors NFSv4: Handle expired stateids when the lease is still valid SUNRPC: Deal with the lack of a SYN_SENT sk->sk_state_change callback...
2011-05-29Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linusLinus Torvalds4-6/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus: Squashfs: Fix sanity check patches on big-endian systems
2011-05-29Merge branch 'release' of ↵Linus Torvalds36-498/+729
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: ACPI EC: remove redundant code ACPI: Add D3 cold state ACPI: processor: fix processor_physically_present in UP kernel ACPI: Split out custom_method functionality into an own driver ACPI: Cleanup custom_method debug stuff ACPI EC: enable MSI workaround for Quanta laptops ACPICA: Update to version 20110413 ACPICA: Execute an orphan _REG method under the EC device ACPICA: Move ACPI_NUM_PREDEFINED_REGIONS to a more appropriate place ACPICA: Update internal address SpaceID for DataTable regions ACPICA: Add more methods eligible for NULL package element removal ACPICA: Split all internal Global Lock functions to new file - evglock ACPI: EC: add another DMI check for ASUS hardware ACPI EC: remove dead code ACPICA: Fix code divergence of global lock handling ACPICA: Use acpi_os_create_lock interface ACPI: osl, add acpi_os_create_lock interface ACPI:Fix goto flows in thermal-sys
2011-05-29Merge branch 'idle-release' of ↵Linus Torvalds14-40/+102
git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6 * 'idle-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6: x86 idle: deprecate mwait_idle() and "idle=mwait" cmdline param x86 idle: deprecate "no-hlt" cmdline param x86 idle APM: deprecate CONFIG_APM_CPU_IDLE x86 idle floppy: deprecate disable_hlt() x86 idle: EXPORT_SYMBOL(default_idle, pm_idle) only when APM demands it x86 idle: clarify AMD erratum 400 workaround idle governor: Avoid lock acquisition to read pm_qos before entering idle cpuidle: menu: fixed wrapping timers at 4.294 seconds
2011-05-29cifs/ubifs: Fix shrinker API change falloutAl Viro3-3/+5
Commit 1495f230fa77 ("vmscan: change shrinker API by passing shrink_control struct") changed the API of ->shrink(), but missed ubifs and cifs instances. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-29pnfs-obj: pg_test check for max_io_sizeBoaz Harrosh1-1/+18
Implement pg_test vector to test for max IO sizes. We calculate a max_io_size member only once, and cache it in lseg so to not do so on every page insert. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [simplify logic] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: define nfs_generic_pg_testBoaz Harrosh1-24/+20
By default, unless pnfs is used coalesce pages until pg_bsize (rsize or wsize) is reached. pnfs layout drivers define their own pg_test methods that use pnfs_generic_pg_test and need to define their own I/O size limits (e.g. based on the file stripe size). [Move a check from nfs_pageio_do_add_request to nfs_generic_pg_test] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: use pnfs_generic_pg_test directly by layout driverBenny Halevy4-19/+17
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: change pg_test return type to boolBenny Halevy6-23/+22
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29NFSv4.1: unify pnfs_pageio_init functionsBenny Halevy5-54/+27
Use common code for pnfs_pageio_init_{read,write} and use a common generic pg_test function. Note that this function always assumes the the layout driver's pg_test method is implemented. [Fix BUG] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: objlayout_encode_layoutcommit implementationBoaz Harrosh3-0/+61
* Define API for io-engines to report delta_space_used in IOs * Encode the osd-layout specific information of the layoutcommit XDR buffer. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs: encode_layoutcommitBenny Halevy2-3/+17
Add a layout driver method to encode the layout type specific opaque part of layout commit in-line in the xdr stream. Currently, the pnfs-objects layout driver uses it to encode metadata hints to the MDS and the blocks layout driver to commit provisionally allocated extents to the file. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: report errors and .encode_layoutreturn Implementation.Boaz Harrosh3-2/+297
An io_state pre-allocates an error information structure for each possible osd-device that might error during IO. When IO is done if all was well the io_state is freed. (as today). If the I/O has ended with an error, the io_state is queued on a per-layout err_list. When eventually encode_layoutreturn() is called, each error is properly encoded on the XDR buffer and only then the io_state is removed from err_list and de-allocated. It is up to the io_engine to fill in the segment that fault and the type of osd_error that occurred. By calling objlayout_io_set_result() for each failing device. In objio_osd: * Allocate io-error descriptors space as part of io_state * Use generic objlayout error reporting at end of io. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs: encode_layoutreturnAndy Adamson2-2/+11
Add a layout driver method to encode the layout type specific opaque part of layout return in-line in the xdr stream. Currently the pnfs-objects layout driver uses it to encode i/o error information on LAYOUTRETURN. Signed-off-by: Andy Adamson <andros@netapp.com> [fixup layout header pointer for encode_layoutreturn] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs: layoutret_on_setattrBenny Halevy3-0/+26
With the objects layout security model, we have object capabilities that are associated with the layout and we anticipate that the server will issue a cb_layoutrecall for any setattr that changes security related attributes (user/group/mode/acl) or truncates the file. Therefore, the layout is returned before issuing the setattr to avoid the anticipated cb_layoutrecall. Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs: layoutreturnBenny Halevy7-7/+274
NFSv4.1 LAYOUTRETURN implementation Currently, does not support layout-type payload encoding. Signed-off-by: Alexandros Batsakis <batsakis@netapp.com> Signed-off-by: Andy Adamson <andros@citi.umich.edu> Signed-off-by: Andy Adamson <andros@netapp.com> Signed-off-by: Dean Hildebrand <dhildeb@us.ibm.com> Signed-off-by: Fred Isaman <iisaman@citi.umich.edu> Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Marc Eshel <eshel@almaden.ibm.com> Signed-off-by: Zhang Jingwang <zhangjingwang@nrchpc.ac.cn> [call pnfs_return_layout right before pnfs_destroy_layout] [remove assert_spin_locked from pnfs_clear_lseg_list] [remove wait parameter from the layoutreturn path.] [remove return_type field from nfs4_layoutreturn_args] [remove range from nfs4_layoutreturn_args] [no need to send layoutcommit from _pnfs_return_layout] [don't wait on sync layoutreturn] [fix layout stateid in layoutreturn args] [fixed NULL deref in _pnfs_return_layout] [removed recaim member of nfs4_layoutreturn_args] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: osd raid engine read/write implementationBoaz Harrosh3-0/+901
With the use of the in-kernel osd library. Implement read/write of data from/to osd-objects according to information specified in the objects-layout. Support for stripping over mirrors with a received stripe_unit. There are however a few constrains which are not supported: 1. Stripe Unit must be a multiple of PAGE_SIZE 2. stripe length (stripe_unit * number_of_stripes) can not be bigger then 32bit. Also support raid-groups and partial-layout. Partial-layout is when not all the groups are received on the line, addressing only a partial range of the file. TODO: Only raid0! raid 4/5/6 support will come at later stage A none supported layout will send IO through the MDS [Important fallout from the last rebase] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [gfp_flags] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs: support for non-rpc layout driversBenny Halevy5-4/+62
Non-rpc layout driver such as for objects and blocks implement their own I/O path and error handling logic. Therefore bypass NFS-based error handling for these layout drivers. [fix lseg ref-count bugs, and null de-refs] [Fall out from: non-rpc layout drivers] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [get rid of PNFS_USE_RPC_CODE] [get rid of __nfs4_write_done_cb] [revert useless change in nfs4_write_done_cb] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: define per-inode private structureBenny Halevy3-0/+46
allocate and deallocate per-inode private pnfs_layout_hdr in preparation for I/O implementation. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs: alloc and free layout_hdr layoutdriver methodsBenny Halevy2-3/+22
[gfp_flags] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: objio_osd device information retrieval and cachingBoaz Harrosh3-0/+233
When a new layout is received in objio_alloc_lseg all device_ids referenced are retrieved. The device information is queried for from MDS and then the osd_device is looked-up from the osd-initiator library. The devices are cached in a per-mount-point list, for later use. At unmount all devices are "put" back to the library. objlayout_get_deviceinfo(), objlayout_put_deviceinfo() middleware API for retrieving device information given a device_id. TODO: The device cache can get big. Cap its size. Keep an LRU and start to return devices which were not used, when list gets to big, or when new entries allocation fail. [pnfs-obj: Bugs in new global-device-cache code] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [gfp_flags] [use global device cache] [use layout driver in global device cache] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: decode layout, alloc/free lsegBoaz Harrosh4-2/+341
objlayout_alloc_lseg prepares an xdr_stream and calls the raid engins objio_alloc_lseg() to allocate a private pnfs_layout_segment. objio_osd.c::objio_alloc_lseg() uses passed xdr_stream to decode and store the layout_segment information in an objio_segment struct, using the pnfs_osd_xdr.h API for the actual parsing the layout xdr. objlayout_free_lseg calls objio_free_lseg() to free the allocated space. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [gfp_flags] [removed "extern" from function definitions] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: pnfs_osd XDR client implementationBoaz Harrosh2-1/+413
* Add the fs/nfs/objlayout/pnfs_osd_xdr_cli.c file, which will include the XDR encode/decode implementations for the pNFS client objlayout driver. [Wrong type in comments] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: pnfs_osd XDR definitionsBenny Halevy1-0/+345
* Add the pnfs_osd_xdr.h header * defintions the pnfs_osd_layout structure including all it's sub-types and constants. * Declare the pnfs_osd_xdr_decode_layout API + all needed inline helpers. * Define the pnfs_osd_deviceaddr structure and all its subtypes and constants. * Declare API for decoding of a pnfs_osd_deviceaddr from XDR stream. * Define the pnfs_osd_ioerr structure, its substructures and constants. * Declare API for encoding of a pnfs_osd_ioerr into XDR stream. * Define the pnfs_osd_layoutupdate structure and its substructures. * Declare API for encoding of a pnfs_osd_layoutupdate into XDR stream. [Remove server definitions] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com>
2011-05-29pnfs-obj: objlayoutdriver module skeletonBenny Halevy4-0/+93
* Define the PNFS_OBJLAYOUT Kconfig option in the nfs master Kconfig file. * Add the objlayout driver to the Kernel's Kbuild system. * Add the fs/nfs/objlayout/Kbuild file for building the objlayoutdriver.ko driver * Define fs/nfs/objlayout/objio_osd.c, register the driver on module initialization and unregister on exit. [pnfs-obj: remove of CONFIG_PNFS fallout] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> [added "unsure" clause] [depend on NFS_V4_1] Signed-off-by: Benny Halevy <bhalevy@panasas.com>
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