kernel/drivers/target/tcm_fc, branch linux-4.16.y

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02T10:10:55Z

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 Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

2017-03-02T22:52:05Z

Pull SCSI target updates from Nicholas Bellinger: "The highlights this round include: - enable dual mode (initiator + target) qla2xxx operation. (Quinn + Himanshu) - add a framework for qla2xxx async fabric discovery. (Quinn + Himanshu) - enable iscsi PDU DDP completion offload in cxgbit/T6 NICs. (Varun) - fix target-core handling of aborted failed commands. (Bart) - fix a long standing target-core issue NULL pointer dereference with active I/O LUN shutdown. (Rob Millner + Bryant + nab)" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (44 commits) target: Add counters for ABORT_TASK success + failure iscsi-target: Fix early login failure statistics misses target: Fix NULL dereference during LUN lookup + active I/O shutdown target: Delete tmr from list before processing target: Fix handling of aborted failed commands uapi: fix linux/target_core_user.h userspace compilation errors target: export protocol identifier qla2xxx: Fix a warning reported by the "smatch" static checker target/iscsi: Fix unsolicited data seq_end_offset calculation target/cxgbit: add T6 iSCSI DDP completion feature target/cxgbit: Enable DDP for T6 only if data sequence and pdu are in order target/cxgbit: Use T6 specific macros to get ETH/IP hdr len target/cxgbit: use cxgb4_tp_smt_idx() to get smt idx target/iscsi: split iscsit_check_dataout_hdr() target: Remove command flag CMD_T_DEV_ACTIVE target: Remove command flag CMD_T_BUSY target: Move session check from target_put_sess_cmd() into target_release_cmd_kref() target: Inline transport_cmd_check_stop() target: Remove an overly chatty debug message target: Stop execution if CMD_T_STOP has been set ...

target/tcm_fc: Remove a set-but-not-used variable

2017-02-09T08:39:06Z

This was detected by building with W=1. Signed-off-by: Bart Van Assche Reviewed-by: Hannes Reinecke Reviewed-by: Christoph Hellwig Cc: Johannes Thumshirn Signed-off-by: Nicholas Bellinger

locking/atomic, kref: Add kref_read()

2017-01-14T10:37:18Z

Since we need to change the implementation, stop exposing internals. Provide kref_read() to read the current reference count; typically used for debug messages. Kills two anti-patterns: atomic_read(&kref->refcount) kref->refcount.counter Signed-off-by: Peter Zijlstra (Intel) Cc: Andrew Morton Cc: Greg Kroah-Hartman Cc: Linus Torvalds Cc: Paul E. McKenney Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

Merge branch 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux

2016-12-21T18:16:05Z

Pull scsi target cleanups from Bart Van Assche: "The changes here are: - a few small bug fixes for the iSCSI and user space target drivers. - minimize the target build time by about 30% by rearranging #include directives - fix the second argument passed to percpu_ida_alloc() - reduce the number of false positive warnings reported by sparse These patches pass Wu Fengguang's build bot tests and also the linux-next tests" * 'scsi-target-for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/bvanassche/linux: iscsi-target: Return error if unable to add network portal target: Fix spelling mistake and unwrap multi-line text target/iscsi: Fix double free in lio_target_tiqn_addtpg() target/user: Fix use-after-free of tcmu_cmds if they are expired target: Minimize #include directives target/user: Add an #include directive cxgbit: Add an #include directive ibmvscsi_tgt: Add two #include directives sbp-target: Add an #include directive qla2xxx: Add an #include directive configfs: Minimize #include directives usb: gadget: Fix second argument of percpu_ida_alloc() sbp-target: Fix second argument of percpu_ida_alloc() target/user: Fix a data type in tcmu_queue_cmd() target: Use NULL instead of 0 to represent a pointer

target: Minimize #include directives

2016-12-09T18:22:28Z

Remove superfluous #include directives from the include/target/*.h files. Add missing #include directives to other *.h and *.c files. Use forward declarations for structures where possible. This change reduces the build time for make M=drivers/target on my laptop from 27.1s to 18.7s or by about 30%. Signed-off-by: Bart Van Assche Cc: Christoph Hellwig Cc: Bryant G. Ly

scsi: libfc: Replace ->seq_release callback with function call

2016-11-08T22:29:56Z

The ->seq_release callback only ever had one implementation, so call the function directly and drop the callback. Signed-off-by: Hannes Reinecke Acked-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen

scsi: libfc: Replace ->seq_assign callback with function call

2016-11-08T22:29:56Z

The ->seq_assign callback only ever had one implementation, so call the function directly and drop the callback. Signed-off-by: Hannes Reinecke Acked-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen

scsi: libfc: Replace ->seq_set_resp callback with direct function call

2016-11-08T22:29:56Z

The ->seq_set_resp callback only ever had one implementation, so call it directly and drop the callback. Signed-off-by: Hannes Reinecke Acked-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen

scsi: libfc: Replace ->seq_start_next callback with function call

2016-11-08T22:29:56Z

The ->seq_start_next callback only ever had one implementation, so call the function directly and drop the callback. Signed-off-by: Hannes Reinecke Acked-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen