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* NFSv4.2 add tracepoint to OFFLOAD_CANCELOlga Kornievskaia2021-11-041-0/+33
| | | | | | | Add tracepoint to OFFLOAD_CANCEL operation. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4.2 add tracepoint to COPY_NOTIFYOlga Kornievskaia2021-11-041-1/+57
| | | | | | | Add a tracepoint to COPY_NOTIFY operation. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4.2 add tracepoint to CB_OFFLOADOlga Kornievskaia2021-11-041-0/+44
| | | | | | | Add a tracepoint to the CB_OFFLOAD operation. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4.2 add tracepoint to CLONEOlga Kornievskaia2021-11-041-0/+73
| | | | | | | Add a tracepoint to the CLONE operation. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4.2 add tracepoint to COPYOlga Kornievskaia2021-11-041-0/+107
| | | | | | | Add a tracepoint to the COPY operation. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4.2 add tracepoints to FALLOCATE and DEALLOCATEOlga Kornievskaia2021-11-041-0/+56
| | | | | | | Add a tracepoint to the FALLOCATE/DEALLOCATE operations. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4.2 add tracepoint to SEEKOlga Kornievskaia2021-11-041-0/+74
| | | | | | | Add a tracepoint to the SEEK operation. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS: Move NFS protocol display macros to global headerChuck Lever2021-11-021-369/+34
| | | | | | | | | | | | | | | Refactor: surface useful show_ macros so they can be shared between the client and server trace code. Additional clean up: - Housekeeping: ensure the correct #include files are pulled in and add proper TRACE_DEFINE_ENUM where they are missing - Use a consistent naming scheme for the helpers - Store values to be displayed symbolically as unsigned long, as that is the type that the __print_yada() functions take Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS: Move generic FS show macros to global headerChuck Lever2021-11-021-48/+19
| | | | | | | | Refactor: Surface useful show_ macros for use by other trace subsystems. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* SUNRPC: Tracepoints should display tk_pid and cl_clid as a fixed-size fieldChuck Lever2021-10-201-4/+5
| | | | | | | | | | | | | | | | | | | | | | For certain special cases, RPC-related tracepoints record a -1 as the task ID or the client ID. It's ugly for a trace event to display 4 billion in these cases. To help keep SUNRPC tracepoints consistent, create a macro that defines the print format specifiers for tk_pid and cl_clid. At some point in the future we might try tk_pid with a wider range of values than 0..64K so this makes it easier to make that change. RPC tracepoints now look like this: <...>-1276 [009] 149.720358: rpc_clnt_new: client=00000005 peer=[192.168.2.55]:20049 program=nfs server=klimt.ib <...>-1342 [004] 149.921234: rpc_xdr_recvfrom: task:0000001a@00000005 head=[0xff1242d9ab6dc01c,144] page=0 tail=[(nil),0] len=144 <...>-1342 [004] 149.921235: xprt_release_cong: task:0000001a@00000005 snd_task:ffffffff cong=256 cwnd=16384 <...>-1342 [004] 149.921235: xprt_put_cong: task:0000001a@00000005 snd_task:ffffffff cong=0 cwnd=16384 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* treewide: Add missing semicolons to __assign_str usesJoe Perches2021-06-301-3/+3
| | | | | | | | | | | | | | | | | | | | | The __assign_str macro has an unusual ending semicolon but the vast majority of uses of the macro already have semicolon termination. $ git grep -P '\b__assign_str\b' | wc -l 551 $ git grep -P '\b__assign_str\b.*;' | wc -l 480 Add semicolons to the __assign_str() uses without semicolon termination and all the other uses without semicolon termination via additional defines that are equivalent to __assign_str() with the eventual goal of removing the semicolon from the __assign_str() macro definition. Link: https://lore.kernel.org/lkml/1e068d21106bb6db05b735b4916bb420e6c9842a.camel@perches.com/ Link: https://lkml.kernel.org/r/48a056adabd8f70444475352f617914cef504a45.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
* NFSv4: Catch and trace server filehandle encoding errorsTrond Myklebust2021-04-141-0/+1
| | | | | | | If the server returns a filehandle with an invalid length, then trace that, and return an EREMOTEIO error. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4: Convert nfs_xdr_status tracepoint to an event classTrond Myklebust2021-04-141-1/+10
| | | | | | | We would like the ability to record other XDR errors, particularly those that are due to server bugs. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4: Add tracing for COMPOUND errorsTrond Myklebust2021-04-141-0/+35
| | | | | | | When the server returns a different operation than we expected, then trace that. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4/pnfs: Add tracing for the deviceid cacheTrond Myklebust2020-12-161-0/+75
| | | | | | Add tracepoints to allow debugging of the deviceid cache. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4: Wait for stateid updates after CLOSE/OPEN_DOWNGRADEBenjamin Coddington2020-10-021-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 0e0cb35b417f ("NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE") the following livelock may occur if a CLOSE races with the update of the nfs_state: Process 1 Process 2 Server ========= ========= ======== OPEN file OPEN file Reply OPEN (1) Reply OPEN (2) Update state (1) CLOSE file (1) Reply OLD_STATEID (1) CLOSE file (2) Reply CLOSE (-1) Update state (2) wait for state change OPEN file wake CLOSE file OPEN file wake CLOSE file ... ... We can avoid this situation by not issuing an immediate retry with a bumped seqid when CLOSE/OPEN_DOWNGRADE receives NFS4ERR_OLD_STATEID. Instead, take the same approach used by OPEN and wait at least 5 seconds for outstanding stateid updates to complete if we can detect that we're out of sequence. Note that after this change it is still possible (though unlikely) that CLOSE waits a full 5 seconds, bumps the seqid, and retries -- and that attempt races with another OPEN at the same time. In order to avoid this race (which would result in the livelock), update nfs_need_update_open_stateid() to handle the case where: - the state is NFS_OPEN_STATE, and - the stateid doesn't match the current open stateid Finally, nfs_need_update_open_stateid() is modified to be idempotent and renamed to better suit the purpose of signaling that the stateid passed is the next stateid in sequence. Fixes: 0e0cb35b417f ("NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE") Cc: stable@vger.kernel.org # v5.4+ Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Add layout segment info to pnfs read/write/commit tracepointsTrond Myklebust2020-08-121-6/+36
| | | | | | | Allow the pnfs I/O tracepoints to trace which layout segment is being used. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS: Add tracepoints for layouterror and layoutstats.Trond Myklebust2020-08-051-0/+2
| | | | | | Allow tracing of the NFSv4.2 layouterror and layoutstats operations. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS: Report the stateid + status in trace_nfs4_layoutreturn_on_close()Trond Myklebust2020-08-051-1/+1
| | | | | | | Ensure we correctly report the stateid and status in the layoutreturn on close tracepoint. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFSv4: Add support for CB_RECALL_ANY for flexfiles layoutsTrond Myklebust2020-03-161-2/+6
| | | | | | | | | When we receive a CB_RECALL_ANY that asks us to return flexfiles layouts, we iterate through all the layouts and look at whether or not there are active open file descriptors that might need them for I/O. If there are no such descriptors, we return the layouts. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* pNFS/flexfiles: Add tracing for layout errorsTrond Myklebust2020-01-151-0/+109
| | | | | | | Trace layout errors for pNFS/flexfiles on read/write/commit operations. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* pNFS/flexfiles: Record resend attempts on I/O failureTrond Myklebust2020-01-151-1/+7
| | | | | | | | If the attempt to do pNFS fails, then record what action we take to recover (resend, reset to pnfs or reset to mds). Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Fix fix of show_nfs_errorsTrond Myklebust2020-01-151-16/+17
| | | | | | | | | Casting a negative value to an unsigned long is not the same as converting it to its absolute value. Fixes: 96650e2effa2 ("NFS: Fix show_nfs_errors macros again") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFSv4: Improve read/write/commit tracingTrond Myklebust2020-01-151-18/+34
| | | | | | | | Ensure we always return the number of bytes read/written. Also display the pnfs filehandle if it is in use. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS4: Report callback authentication errorsChuck Lever2020-01-151-0/+35
| | | | | | | | This seems to be a somewhat common issue with Kerberos NFSv4.0 set-ups. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS4: Trace lock reclaimsChuck Lever2019-11-181-0/+82
| | | | | | | | | | One of the most frustrating messages our sustaining team sees is the "Lock reclaim failed!" message. Add some observability in the client's lock reclaim logic so we can capture better data the first time a problem occurs. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS4: Trace state recovery operationChuck Lever2019-11-181-0/+93
| | | | | | | | Add a trace point in the main state manager loop to observe state recovery operation. Help track down state recovery bugs. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* pnfs/flexfiles: Add tracepoints for detecting pnfs fallback to MDSTrond Myklebust2019-07-181-1/+75
| | | | | | | Add tracepoints to allow debugging of the event chain leading to a pnfs fallback to doing I/O through the MDS. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
* NFS: Record task, client ID, and XID in xdr_status trace pointsChuck Lever2019-07-091-2/+13
| | | | | | | | | | | When triggering an nfs_xdr_status trace point, record the task ID and XID of the failing RPC to better pinpoint the problem. This feels like a bit of a layering violation. Suggested-by: Trond Myklebust <trondmy@hammerspace.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Fix show_nfs_errors macros againChuck Lever2019-07-091-82/+82
| | | | | | | | | | | | | | | | | | | | | | I noticed that NFS status values stopped working again. trace_print_symbols_seq() takes an unsigned long. Passing a negative errno or negative NFSERR value just confuses it, and since we're using C macros here and not static inline functions, all bets are off due to implicit type conversion. Straight-line the calling conventions so that error codes are stored in the trace record as positive values in an unsigned long field, mapped to symbolic as an unsigned long, and displayed as a negative value, to continue to enable grepping on "error=-". It's often the case that an error value that is positive is a byte count but when it's negative, it's an error (e.g. nfs4_write). Fix those cases so that the value that is eventually stored in the error field is a positive NFS status or errno, or zero. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS4: Add a trace event to record invalid CB sequence IDsChuck Lever2019-07-091-0/+38
| | | | | | | Help debug NFSv4 callback failures. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Add trace events to report non-zero NFS status codesChuck Lever2019-02-131-0/+25
| | | | | | | | These can help field troubleshooting without needing the overhead of a full network capture (ie, tcpdump). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Fix NFSv4 symbolic trace point outputChuck Lever2019-01-021-143/+313
| | | | | | | | | These symbolic values were not being displayed in string form. TRACE_DEFINE_ENUM was missing in many cases. It also turns out that __print_symbolic wants an unsigned long in the first field... Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFSv4: Fix a tracepoint Oops in initiate_file_draining()Trond Myklebust2018-09-141-1/+1
| | | | | | | | | | Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to change the test in the tracepoint. Fixes: ce5624f7e6675 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Cc: stable@vger.kernel.org # v4.17+ Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFSv4: Fix a tracepoint Oops in initiate_file_draining()Trond Myklebust2018-09-141-1/+1
| | | | | | | | | | Now that the value of 'ino' can be NULL or an ERR_PTR(), we need to change the test in the tracepoint. Fixes: ce5624f7e6675 ("NFSv4: Return NFS4ERR_DELAY when a layout fails...") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Cc: stable@vger.kernel.org # v4.17+ Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* Merge tag 'nfs-for-4.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds2017-11-171-18/+8
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull NFS client updates from Anna Schumaker: "Stable bugfixes: - Revalidate "." and ".." correctly on open - Avoid RCU usage in tracepoints - Fix ugly referral attributes - Fix a typo in nomigration mount option - Revert "NFS: Move the flock open mode check into nfs_flock()" Features: - Implement a stronger send queue accounting system for NFS over RDMA - Switch some atomics to the new refcount_t type Other bugfixes and cleanups: - Clean up access mode bits - Remove special-case revalidations in nfs_opendir() - Improve invalidating NFS over RDMA memory for async operations that time out - Handle NFS over RDMA replies with a worqueue - Handle NFS over RDMA sends with a workqueue - Fix up replaying interrupted requests - Remove dead NFS over RDMA definitions - Update NFS over RDMA copyright information - Be more consistent with bool initialization and comparisons - Mark expected switch fall throughs - Various sunrpc tracepoint cleanups - Fix various OPEN races - Fix a typo in nfs_rename() - Use common error handling code in nfs_lock_and_join_request() - Check that some structures are properly cleaned up during net_exit() - Remove net pointer from dprintk()s" * tag 'nfs-for-4.15-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (62 commits) NFS: Revert "NFS: Move the flock open mode check into nfs_flock()" NFS: Fix typo in nomigration mount option nfs: Fix ugly referral attributes NFS: super: mark expected switch fall-throughs sunrpc: remove net pointer from messages nfs: remove net pointer from messages sunrpc: exit_net cleanup check added nfs client: exit_net cleanup check added nfs/write: Use common error handling code in nfs_lock_and_join_requests() NFSv4: Replace closed stateids with the "invalid special stateid" NFSv4: nfs_set_open_stateid must not trigger state recovery for closed state NFSv4: Check the open stateid when searching for expired state NFSv4: Clean up nfs4_delegreturn_done NFSv4: cleanup nfs4_close_done NFSv4: Retry NFS4ERR_OLD_STATEID errors in layoutreturn pNFS: Retry NFS4ERR_OLD_STATEID errors in layoutreturn-on-close NFSv4: Don't try to CLOSE if the stateid 'other' field has changed NFSv4: Retry CLOSE and DELEGRETURN on NFS4ERR_OLD_STATEID. NFS: Fix a typo in nfs_rename() NFSv4: Fix open create exclusive when the server reboots ...
| * NFSv4: Add a tracepoint to document open stateid updatesTrond Myklebust2017-11-171-0/+2
| | | | | | | | | | Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
| * NFS: Avoid RCU usage in tracepointsAnna Schumaker2017-11-171-18/+6
| | | | | | | | | | | | | | | | | | | | | | There isn't an obvious way to acquire and release the RCU lock during a tracepoint, so we can't use the rpc_peeraddr2str() function here. Instead, rely on the client's cl_hostname, which should have similar enough information without needing an rcu_dereference(). Reported-by: Dave Jones <davej@codemonkey.org.uk> Cc: stable@vger.kernel.org # v3.12 Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.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>
* nfs4: add NFSv4 LOOKUPP handlersJeff Layton2017-07-131-0/+29
| | | | | | | | This will be needed in order to implement the get_parent export op for nfsd. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* NFS: Make trace_nfs4_setup_sequence() available to NFS v4.0Anna Schumaker2017-01-301-32/+32
| | | | | | | | | This tracepoint displays information about the slot that was chosen for the RPC, in addition to session information. This could be useful information for debugging, and we can set the session id hash to 0 to indicate that there is no session. Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* tracing: Use __get_str() when manipulating stringsDaniel Bristot de Oliveira2016-07-151-2/+2
| | | | | | | | | | | | | | | | | | Use __get_str(str) rather than __get_dynamic_array(str) when deadling with strings. It is just a code cleanup, no changes on tracepoint ABI. Link: http://lkml.kernel.org/r/ea260df91817411cca2a1f3db2abd88860094788.1467407618.git.bristot@redhat.com Cc: Trond Myklebust <trond.myklebust@primarydata.com> Cc: Anna Schumaker <anna.schumaker@netapp.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-nfs@vger.kernel.org Suggested-by: Steven Rostedt <rostedt@goodmis.org> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Daniel Bristot de Oliveira <bristot@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
* pnfs: rework LAYOUTGET retry handlingJeff Layton2016-05-171-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are several problems in the way a stateid is selected for a LAYOUTGET operation: We pick a stateid to use in the RPC prepare op, but that makes it difficult to serialize LAYOUTGETs that use the open stateid. That serialization is done in pnfs_update_layout, which occurs well before the rpc_prepare operation. Between those two events, the i_lock is dropped and reacquired. pnfs_update_layout can find that the list has lsegs in it and not do any serialization, but then later pnfs_choose_layoutget_stateid ends up choosing the open stateid. This patch changes the client to select the stateid to use in the LAYOUTGET earlier, when we're searching for a usable layout segment. This way we can do it all while holding the i_lock the first time, and ensure that we serialize any LAYOUTGET call that uses a non-layout stateid. This also means a rework of how LAYOUTGET replies are handled, as we must now get the latest stateid if we want to retransmit in response to a retryable error. Most of those errors boil down to the fact that the layout state has changed in some fashion. Thus, what we really want to do is to re-search for a layout when it fails with a retryable error, so that we can avoid reissuing the RPC at all if possible. While the LAYOUTGET RPC is async, the initiating thread always waits for it to complete, so it's effectively synchronous anyway. Currently, when we need to retry a LAYOUTGET because of an error, we drive that retry via the rpc state machine. This means that once the call has been submitted, it runs until it completes. So, we must move the error handling for this RPC out of the rpc_call_done operation and into the caller. In order to handle errors like NFS4ERR_DELAY properly, we must also pass a pointer to the sliding timeout, which is now moved to the stack in pnfs_update_layout. The complicating errors are -NFS4ERR_RECALLCONFLICT and -NFS4ERR_LAYOUTTRYLATER, as those involve a timeout after which we give up and return NULL back to the caller. So, there is some special handling for those errors to ensure that the layers driving the retries can handle that appropriately. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
* Merge branch 'bugfixes'Trond Myklebust2016-01-071-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bugfixes: SUNRPC: Fixup socket wait for memory SUNRPC: Fix a missing break in rpc_anyaddr() pNFS/flexfiles: Fix an Oopsable typo in ff_mirror_match_fh() NFS: Fix attribute cache revalidation NFS: Ensure we revalidate attributes before using execute_ok() NFS: Flush reclaim writes using FLUSH_COND_STABLE NFS: Background flush should not be low priority NFSv4.1/pnfs: Fixup an lo->plh_block_lgets imbalance in layoutreturn NFSv4: Don't perform cached access checks before we've OPENed the file NFS: Allow the combination pNFS and labeled NFS NFS42: handle layoutstats stateid error nfs: Fix race in __update_open_stateid() nfs: fix missing assignment in nfs4_sequence_done tracepoint
| * nfs: fix missing assignment in nfs4_sequence_done tracepointAndrew Elble2015-12-281-0/+1
| | | | | | | | | | | | | | status_flags not set Signed-off-by: Andrew Elble <aweits@rit.edu> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | NFSv4: List stateid information in the callback tracepointsTrond Myklebust2015-12-281-2/+67
| | | | | | | | | | | | The stateid is extremely valuable when debugging. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | pNFS: Modify pnfs_update_layout tracepoints to use layout stateidTrond Myklebust2015-12-281-6/+17
| | | | | | | | | | | | | | | | Instead of displaying a layout segment pointer in these tracepoints, let's use the layout stateid, now that Olga gave us a set of tools for displaying them. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | nfs: add new tracepoint for pnfs_update_layoutJeff Layton2015-12-281-0/+56
| | | | | | | | | | | | | | | | | | | | pnfs_update_layout is really the "nexus" of layout handling. If it returns NULL then we end up going through the MDS. This patch adds some tracepoints to that function that allow us to determine the cause when we end up going through the MDS unexpectedly. Signed-off-by: Jeff Layton <jeff.layton@primarydata.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | Adding tracepoint to cached openOlga Kornievskaia2015-12-281-0/+39
| | | | | | | | | | Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
* | Adding stateid information to tracepointsOlga Kornievskaia2015-12-281-25/+230
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | Operations to which stateid information is added: close, delegreturn, open, read, setattr, layoutget, layoutcommit, test_stateid, write, lock, locku, lockt Format is "stateid=<seqid>:<crc32 hash stateid.other>", also "openstateid=", "layoutstateid=", and "lockstateid=" for open_file, layoutget, set_lock tracepoints. New function is added to internal.h, nfs_stateid_hash(), to compute the hash trace_nfs4_setattr() is moved from nfs4_do_setattr() to _nfs4_do_setattr() to get access to stateid. trace_nfs4_setattr and trace_nfs4_delegreturn are changed from INODE_EVENT to new event type, INODE_STATEID_EVENT which is same as INODE_EVENT but adds stateid information for locking tracepoints, moved trace_nfs4_set_lock() into _nfs4_do_setlk() to get access to stateid information, and removed trace_nfs4_lock_reclaim(), trace_nfs4_lock_expired() as they call into _nfs4_do_setlk() and both were previously same LOCK_EVENT type. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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