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* NFSv4.2 copy do not allocate memory under the lockOlga Kornievskaia2018-11-221-9/+10
| | | | | | | | | Bruce pointed out that we shouldn't allocate memory while holding a lock in the nfs4_callback_offload() and handle_async_copy() that deal with a racing CB_OFFLOAD and reply to COPY case. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS recover from destination server reboot for copiesOlga Kornievskaia2018-08-131-3/+13
| | | | | | | | | | | | Mark the destination state to indicate a server-side copy is happening. On detecting a reboot and recovering open state check if any state is engaged in a server-side copy, if so, find the copy and mark it and then signal the waiting thread. Upon wakeup, if copy was marked then propage EAGAIN to the nfsd_copy_file_range and restart the copy from scratch. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS add a simple sync nfs4_proc_commit after async COPYOlga Kornievskaia2018-08-091-0/+31
| | | | | | | | | A COPY with unstable write data needs a simple sync commit. Filehandle value is gotten as a part of the inner loop so in case of a reboot retry it should get the new value. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS handle COPY ERR_OFFLOAD_NO_REQSOlga Kornievskaia2018-08-091-1/+5
| | | | | | | | If client sent async COPY and server replied with ERR_OFFLOAD_NO_REQS, client should retry with a synchronous copy. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS send OFFLOAD_CANCEL when COPY killedOlga Kornievskaia2018-08-091-1/+90
| | | | | | | | When COPY is killed by the user send OFFLOAD_CANCEL to server processing the copy. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS handle COPY reply CB_OFFLOAD call raceOlga Kornievskaia2018-08-091-2/+20
| | | | | | | | | | | | | It's possible that server replies back with CB_OFFLOAD call and COPY reply at the same time such that client will process CB_OFFLOAD before reply to COPY. For that keep a list of pending callback stateids received and then before waiting on completion check the pending list. Cleanup any pending copies on the client shutdown. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS add support for asynchronous COPYOlga Kornievskaia2018-08-091-5/+50
| | | | | | | | | | | | | | | Change xdr to always send COPY asynchronously. Keep the list copies send in a list under a server structure. Once copy is sent, it waits on a completion structure that will be signalled by the callback thread that receives CB_OFFLOAD. If CB_OFFLOAD returned an error and even if it returned partial bytes, ignore them (as we can't commit without a verifier to match) and return an error. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFSv4: Always clear the pNFS layout when handling ESTALETrond Myklebust2018-05-311-0/+4
| | | | | | | If we get an ESTALE error in response to an RPC call operating on the file on the MDS, we should immediately cancel the layout for that file. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS: Pass "privileged" value to nfs4_init_sequence()Anna Schumaker2018-05-311-1/+1
| | | | | | | | | We currently have a separate function just to set this, but I think it makes more sense to set it at the same time as the other values in nfs4_init_sequence() Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* NFSv4.2 fix size storage for nfs42_proc_copyOlga Kornievskaia2017-07-131-1/+1
| | | | | | | Return size of COPY is u64 but it was assigned to an "int" status. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS fix COMMIT after COPYOlga Kornievskaia2017-05-241-1/+1
| | | | | | | | | | | Fix a typo in the commit e092693443b995c8e3a565a73b5fdb05f1260f9b "NFS append COMMIT after synchronous COPY" Reported-by: Eryu Guan <eguan@redhat.com> Fixes: e092693443b ("NFS append COMMIT after synchronous COPY") Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Tested-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS append COMMIT after synchronous COPYOlga Kornievskaia2017-05-081-6/+15
| | | | | | | | | | | | Instead of messing with the commit path which has been causing issues, add a COMMIT op after the COPY and ask for stable copies in the first space. It saves a round trip, since after the COPY, the client sends a COMMIT anyway. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* pNFS: Ensure we commit the layout if it has been invalidatedTrond Myklebust2017-04-291-0/+1
| | | | | | | | If the layout is being invalidated on the server, then we must invoke nfs_commit_inode() to ensure any commits to the DS get cleared out. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Clean up nfs42_layoutstat_done()Anna Schumaker2017-04-201-2/+0
| | | | | Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4: Fix reboot recovery in copy offloadTrond Myklebust2017-02-221-26/+37
| | | | | | | | | | | | Copy offload code needs to be hooked into the code for handling NFS4ERR_BAD_STATEID by ensuring that we set the "stateid" field in struct nfs4_exception. Reported-by: Olga Kornievskaia <aglo@umich.edu> Fixes: 2e72448b07dc3 ("NFS: Add COPY nfs operation") Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Use nfs4_setup_sequence() everywhereAnna Schumaker2017-01-301-2/+2
| | | | | | | This does the right thing depending on if we have a session, rather than needing to handle this manually in multiple places. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Change nfs4_get_session() to take an nfs_client structureAnna Schumaker2017-01-301-3/+2
| | | | | | | | pNFS only has access to the nfs_client structure, and not the nfs_server, so we need to make this change so the function can be used by pNFS as well. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Move nfs4_get_session() into nfs4_session.hAnna Schumaker2017-01-301-0/+1
| | | | | | | | This puts session related functions together in the same space. I only keep one version of this function, since this variable will always be NULL when using NFS v4.0. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* pNFS/flexfiles: Minor refactoring before adding iostats to layoutreturnTrond Myklebust2016-12-031-3/+6
| | | | Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4.2: Fix a reference leak in nfs42_proc_layoutstats_genericJeff Layton2016-10-041-0/+1
| | | | | | | | | The caller of rpc_run_task also gets a reference that must be put. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Cc: stable@vger.kernel.org # 4.2+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* pNFS: Handle NFS4ERR_OLD_STATEID correctly in LAYOUTSTAT callsTrond Myklebust2016-08-191-5/+29
| | | | | | We normally want to update the stateid and then retry, Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4.2: LAYOUTSTATS may return NFS4ERR_ADMIN/DELEG_REVOKEDTrond Myklebust2016-08-051-0/+2
| | | | | | | We should handle those errors in the same way we handle the other stateid errors: by invalidating the faulty layout stateid. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* Merge branch 'pnfs'Trond Myklebust2016-07-241-2/+1
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| * pNFS: Cleanup - don't open code pnfs_mark_layout_stateid_invalid()Trond Myklebust2016-07-241-2/+1
| | | | | | | | | | | | | | Ensure nfs42_layoutstat_done() layoutget don't open code layout stateid invalidation. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.2: llseek(SEEK_HOLE) and llseek(SEEK_DATA) don't require data syncTrond Myklebust2016-07-051-1/+5
| | | | | | | | | | | | | | | | We want to ensure that we write the cached data to the server, but don't require it be synced to disk. If the server reboots, we will get a stateid error, which will cause us to retry anyway. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.2: Fix writeback races in nfs4_copy_file_rangeTrond Myklebust2016-07-051-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | We need to ensure that any writes to the destination file are serialised with the copy, meaning that the writeback has to occur under the inode lock. Also relax the writeback requirement on the source, and rely on the stateid checking to tell us if the source rebooted. Add the helper nfs_filemap_write_and_wait_range() to call pnfs_sync_inode() as is appropriate for pNFS servers that may need a layoutcommit. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4.2: Fix a race in nfs42_proc_deallocate()Trond Myklebust2016-07-051-2/+4
|/ | | | | | | | When punching holes in a file, we want to ensure the operation is serialised w.r.t. other writes, meaning that we want to call nfs_sync_inode() while holding the inode lock. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* Merge tag 'nfs-for-4.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds2016-05-261-1/+106
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Anna Schumaker: "Highlights include: Features: - Add support for the NFS v4.2 COPY operation - Add support for NFS/RDMA over IPv6 Bugfixes and cleanups: - Avoid race that crashes nfs_init_commit() - Fix oops in callback path - Fix LOCK/OPEN race when unlinking an open file - Choose correct stateids when using delegations in setattr, read and write - Don't send empty SETATTR after OPEN_CREATE - xprtrdma: Prevent server from writing a reply into memory client has released - xprtrdma: Support using Read list and Reply chunk in one RPC call" * tag 'nfs-for-4.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (61 commits) pnfs: pnfs_update_layout needs to consider if strict iomode checking is on nfs/flexfiles: Use the layout segment for reading unless it a IOMODE_RW and reading is disabled nfs/flexfiles: Helper function to detect FF_FLAGS_NO_READ_IO nfs: avoid race that crashes nfs_init_commit NFS: checking for NULL instead of IS_ERR() in nfs_commit_file() pnfs: make pnfs_layout_process more robust pnfs: rework LAYOUTGET retry handling pnfs: lift retry logic from send_layoutget to pnfs_update_layout pnfs: fix bad error handling in send_layoutget flexfiles: add kerneldoc header to nfs4_ff_layout_prepare_ds flexfiles: remove pointless setting of NFS_LAYOUT_RETURN_REQUESTED pnfs: only tear down lsegs that precede seqid in LAYOUTRETURN args pnfs: keep track of the return sequence number in pnfs_layout_hdr pnfs: record sequence in pnfs_layout_segment when it's created pnfs: don't merge new ff lsegs with ones that have LAYOUTRETURN bit set pNFS/flexfiles: When initing reads or writes, we might have to retry connecting to DSes pNFS/flexfiles: When checking for available DSes, conditionally check for MDS io pNFS/flexfile: Fix erroneous fall back to read/write through the MDS NFS: Reclaim writes via writepage are opportunistic NFSv4: Use the right stateid for delegations in setattr, read and write ...
| * pnfs: only tear down lsegs that precede seqid in LAYOUTRETURN argsJeff Layton2016-05-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | LAYOUTRETURN is "special" in that servers and clients are expected to work with old stateids. When the client sends a LAYOUTRETURN with an old stateid in it then the server is expected to only tear down layout segments that were present when that seqid was current. Ensure that the client handles its accounting accordingly. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * NFS: Add COPY nfs operationAnna Schumaker2016-05-171-0/+105
|/ | | | | | | | This adds the copy_range file_ops function pointer used by the sys_copy_range() function call. This patch only implements sync copies, so if an async copy happens we decode the stateid and ignore it. Signed-off-by: Anna Schumaker <bjschuma@netapp.com>
* nfs4: fix stateid handling for the NFS v4.2 operationsChristoph Hellwig2016-02-171-43/+76
| | | | | | | | | | | | | | | | | | | | | | | The newly added NFS v4.2 operations (ALLOCATE, DEALLOCATE, SEEK and CLONE) use a helper called nfs42_set_rw_stateid to select a stateid that is sent to the server. But they don't set the inode and state fields in the nfs4_exception structure, and this don't partake in the stateid recovery protocol. Because of this they will simply return errors insted of trying to recover a stateid when the server return a BAD_STATEID error. Additionally CLONE has the problem that it operates on two files and thus two stateids, and thus needs to call the exception handler twice to recover stateids. While we're at it stop grabbing an addititional reference to the open context in all these operations - having the file open guarantees that the open context won't go away. All this can be produces with the generic/168 and generic/170 tests in xfstests which stress the CLONE stateid handling. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* wrappers for ->i_mutex accessAl Viro2016-01-221-4/+4
| | | | | | | | | | | parallel to mutex_{lock,unlock,trylock,is_locked,lock_nested}, inode_foo(inode) being mutex_foo(&inode->i_mutex). Please, use those for access to ->i_mutex; over the coming cycle ->i_mutex will become rwsem, with ->lookup() done with it held only shared. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* NFS42: handle layoutstats stateid errorPeng Tao2015-12-281-2/+27
| | | | | | | | | When server returns layoutstats stateid error, we should invalidate client's layout so that next IO can trigger new layoutget. Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Properly set NFS v4.2 NFSDBG_FACILITYAnna Schumaker2015-11-231-1/+1
| | | | | | | | NFS v4.2 operations can work outside of pNFS, so dprintk() output shouldn't be placed under NFSDBG_PNFS. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* nfs: pass on count for CLONE operationsChristoph Hellwig2015-11-231-0/+1
| | | | | | | | | Currently we pass uninitialized stack garbage in the count parameter. The value is usually large enought to clone whole files and thus let simple tests pass, but it makes the tests for range clones very unhappy. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* nfs42: add CLONE proc functionsPeng Tao2015-10-151-0/+71
| | | | | Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* nfs: fix v4.2 SEEK on files over 2 gigsJ. Bruce Fields2015-09-171-1/+3
| | | | | | | | | | | | We're incorrectly assigning a loff_t return to an int. If SEEK_HOLE or SEEK_DATA returns an offset over 2^31 then the application will see a weird lseek() result (usually -EIO). Cc: stable@vger.kernel.org Fixes: bdcc2cd14e4e "NFSv4.2: handle NFS-specific llseek errors" Signed-off-by: J. Bruce Fields <bfields@redhat.com> Reviewed-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4.2: handle NFS-specific llseek errorsJ. Bruce Fields2015-07-271-1/+18
| | | | | | | | | Handle NFS-specific llseek errors instead of letting them leak out to userspace. Reported-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv4.2: LAYOUTSTATS is optional to implementTrond Myklebust2015-06-271-2/+8
| | | | | | | Make it so, by checking the return value for NFS4ERR_MOTSUPP and caching the information as a server capability. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* nfs42: serialize LAYOUTSTATS calls of the same filePeng Tao2015-06-241-0/+3
| | | | | | | | There is no need to report concurrently. Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* pnfs: add pnfs_report_layoutstat helper functionPeng Tao2015-06-241-0/+4
| | | | | | Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* pNFS: fill in nfs42_layoutstat_opsPeng Tao2015-06-241-0/+47
| | | | | | Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFSv.2/pnfs Add a LAYOUTSTATS rpc functionTrond Myklebust2015-06-241-0/+27
| | | | | | | Reviewed-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Reduce time spent holding the i_mutex during fallocate()Anna Schumaker2015-04-231-0/+8
| | | | | | | | | At the very least, we should not be taking the i_mutex until after checking if the server even supports ALLOCATE or DEALLOCATE, allowing v4.0 or v4.1 to exit without potentially waiting on a lock. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Don't zap caches on fallocate()Anna Schumaker2015-04-231-4/+19
| | | | | | | | | | | This patch adds a GETATTR to the end of ALLOCATE and DEALLOCATE operations so we can set the updated inode size and change attribute directly. DEALLOCATE will still need to release pagecache pages, so nfs42_proc_deallocate() now calls truncate_pagecache_range() before contacting the server. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* nfs: Add DEALLOCATE supportAnna Schumaker2014-11-251-0/+17
| | | | | | | | This patch adds support for using the NFS v4.2 operation DEALLOCATE to punch holes in a file. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* nfs: Add ALLOCATE supportAnna Schumaker2014-11-251-0/+58
| | | | | | | | This patch adds support for using the NFS v4.2 operation ALLOCATE to preallocate data in a file. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Use nfs_server_capable() for checknig NFS_CAP_SEEKAnna Schumaker2014-11-241-1/+1
| | | | | | | This should make the code easier to maintain in the future. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* NFS: Implement SEEKAnna Schumaker2014-09-301-0/+69
The SEEK operation is used when an application makes an lseek call with either the SEEK_HOLE or SEEK_DATA flags set. I fall back on nfs_file_llseek() if the server does not have SEEK support. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 16:31:03 +0000