1. 10 Nov, 2018 2 commits
  2. 07 Nov, 2018 1 commit
  3. 14 May, 2018 1 commit
  4. 11 Mar, 2018 1 commit
  5. 08 Mar, 2018 1 commit
  6. 02 Nov, 2017 1 commit
    • Greg Kroah-Hartman's avatar
      License cleanup: add SPDX GPL-2.0 license identifier to files with no license · b2441318
      Greg Kroah-Hartman authored
      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: default avatarKate Stewart <kstewart@linuxfoundation.org>
      Reviewed-by: default avatarPhilippe Ombredanne <pombredanne@nexb.com>
      Reviewed-by: default avatarThomas Gleixner <tglx@linutronix.de>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b2441318
  7. 21 Jun, 2017 1 commit
    • Bart Van Assche's avatar
      block: Make most scsi_req_init() calls implicit · ca18d6f7
      Bart Van Assche authored
      Instead of explicitly calling scsi_req_init() after blk_get_request(),
      call that function from inside blk_get_request(). Add an
      .initialize_rq_fn() callback function to the block drivers that need
      it. Merge the IDE .init_rq_fn() function into .initialize_rq_fn()
      because it is too small to keep it as a separate function. Keep the
      scsi_req_init() call in ide_prep_sense() because it follows a
      blk_rq_init() call.
      
      References: commit 82ed4db4 ("block: split scsi_request out of struct request")
      Signed-off-by: default avatarBart Van Assche <bart.vanassche@sandisk.com>
      Cc: Christoph Hellwig <hch@lst.de>
      Cc: Hannes Reinecke <hare@suse.com>
      Cc: Omar Sandoval <osandov@fb.com>
      Cc: Nicholas Bellinger <nab@linux-iscsi.org>
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      ca18d6f7
  8. 20 Apr, 2017 1 commit
  9. 31 Jan, 2017 2 commits
    • Christoph Hellwig's avatar
      block: fold cmd_type into the REQ_OP_ space · aebf526b
      Christoph Hellwig authored
      Instead of keeping two levels of indirection for requests types, fold it
      all into the operations.  The little caveat here is that previously
      cmd_type only applied to struct request, while the request and bio op
      fields were set to plain REQ_OP_READ/WRITE even for passthrough
      operations.
      
      Instead this patch adds new REQ_OP_* for SCSI passthrough and driver
      private requests, althought it has to add two for each so that we
      can communicate the data in/out nature of the request.
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      aebf526b
    • Christoph Hellwig's avatar
      ide: don't abuse cmd_type · 2f5a8e80
      Christoph Hellwig authored
      Currently the legacy ide driver defines several request types of it's own,
      which is in the way of removing that field entirely.
      
      Instead add a type field to struct ide_request and use that to distinguish
      the different types of IDE-internal requests.
      
      It's a bit of a mess, but so is the surrounding code..
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      2f5a8e80
  10. 27 Jan, 2017 1 commit
  11. 24 Dec, 2016 1 commit
  12. 20 Jun, 2016 1 commit
    • Stephan Linz's avatar
      leds: convert IDE trigger to common disk trigger · eb25cb99
      Stephan Linz authored
      This patch converts the IDE specific LED trigger to a generic disk
      activity LED trigger. The libata core is now a trigger source just
      like before the IDE disk driver. It's merely a replacement of the
      string ide by disk.
      
      The patch is taken from http://dev.gentoo.org/~josejx/ata.patch and is
      widely used by any ibook/powerbook owners with great satisfaction.
      Likewise, it is very often used successfully on different ARM platforms.
      
      Unlike the original patch, the existing 'ide-disk' trigger is still
      available for backward compatibility. That reduce the amount of patches
      in affected device trees out of the mainline kernel. For further
      development, the new name 'disk-activity' should be used.
      
      Cc: Joseph Jezak <josejx@gentoo.org>
      Cc: Jörg Sommer <joerg@alea.gnuu.de>
      Cc: Richard Purdie <rpurdie@rpsys.net>
      Signed-off-by: default avatarStephan Linz <linz@li-pro.net>
      Signed-off-by: default avatarJacek Anaszewski <j.anaszewski@samsung.com>
      eb25cb99
  13. 07 Jun, 2016 1 commit
  14. 12 Apr, 2016 1 commit
  15. 07 Nov, 2015 1 commit
  16. 04 Oct, 2014 1 commit
    • Mike Snitzer's avatar
      block: disable entropy contributions for nonrot devices · b277da0a
      Mike Snitzer authored
      Clear QUEUE_FLAG_ADD_RANDOM in all block drivers that set
      QUEUE_FLAG_NONROT.
      
      Historically, all block devices have automatically made entropy
      contributions.  But as previously stated in commit e2e1a148 ("block: add
      sysfs knob for turning off disk entropy contributions"):
          - On SSD disks, the completion times aren't as random as they
            are for rotational drives. So it's questionable whether they
            should contribute to the random pool in the first place.
          - Calling add_disk_randomness() has a lot of overhead.
      
      There are more reliable sources for randomness than non-rotational block
      devices.  From a security perspective it is better to err on the side of
      caution than to allow entropy contributions from unreliable "random"
      sources.
      Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      b277da0a
  17. 15 Apr, 2014 1 commit
    • Jens Axboe's avatar
      block: remove struct request buffer member · b4f42e28
      Jens Axboe authored
      This was used in the olden days, back when onions were proper
      yellow. Basically it mapped to the current buffer to be
      transferred. With highmem being added more than a decade ago,
      most drivers map pages out of a bio, and rq->buffer isn't
      pointing at anything valid.
      
      Convert old style drivers to just use bio_data().
      
      For the discard payload use case, just reference the page
      in the bio.
      Signed-off-by: default avatarJens Axboe <axboe@fb.com>
      b4f42e28
  18. 03 Oct, 2011 1 commit
  19. 10 Sep, 2010 1 commit
    • Tejun Heo's avatar
      block: deprecate barrier and replace blk_queue_ordered() with blk_queue_flush() · 4913efe4
      Tejun Heo authored
      Barrier is deemed too heavy and will soon be replaced by FLUSH/FUA
      requests.  Deprecate barrier.  All REQ_HARDBARRIERs are failed with
      -EOPNOTSUPP and blk_queue_ordered() is replaced with simpler
      blk_queue_flush().
      
      blk_queue_flush() takes combinations of REQ_FLUSH and FUA.  If a
      device has write cache and can flush it, it should set REQ_FLUSH.  If
      the device can handle FUA writes, it should also set REQ_FUA.
      
      All blk_queue_ordered() users are converted.
      
      * ORDERED_DRAIN is mapped to 0 which is the default value.
      * ORDERED_DRAIN_FLUSH is mapped to REQ_FLUSH.
      * ORDERED_DRAIN_FLUSH_FUA is mapped to REQ_FLUSH | REQ_FUA.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Acked-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
      Cc: Christoph Hellwig <hch@infradead.org>
      Cc: Nick Piggin <npiggin@kernel.dk>
      Cc: Michael S. Tsirkin <mst@redhat.com>
      Cc: Jeremy Fitzhardinge <jeremy@xensource.com>
      Cc: Chris Wright <chrisw@sous-sol.org>
      Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
      Cc: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
      Cc: David S. Miller <davem@davemloft.net>
      Cc: Alasdair G Kergon <agk@redhat.com>
      Cc: Pierre Ossman <drzeus@drzeus.cx>
      Cc: Stefan Weinhuber <wein@de.ibm.com>
      Signed-off-by: default avatarJens Axboe <jaxboe@fusionio.com>
      4913efe4
  20. 19 Aug, 2010 1 commit
  21. 07 Aug, 2010 3 commits
  22. 21 May, 2010 1 commit
    • Tejun Heo's avatar
      block,ide: simplify bdops->set_capacity() to ->unlock_native_capacity() · c3e33e04
      Tejun Heo authored
      bdops->set_capacity() is unnecessarily generic.  All that's required
      is a simple one way notification to lower level driver telling it to
      try to unlock native capacity.  There's no reason to pass in target
      capacity or return the new capacity.  The former is always the
      inherent native capacity and the latter can be handled via the usual
      device resize / revalidation path.  In fact, the current API is always
      used that way.
      
      Replace ->set_capacity() with ->unlock_native_capacity() which take
      only @disk and doesn't return anything.  IDE which is the only current
      user of the API is converted accordingly.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Cc: Ben Hutchings <ben@decadent.org.uk>
      Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
      Acked-by: default avatarDavid S. Miller <davem@davemloft.net>
      Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
      c3e33e04
  23. 26 Feb, 2010 1 commit
  24. 22 Jul, 2009 1 commit
  25. 15 Jun, 2009 1 commit
  26. 07 Jun, 2009 2 commits
    • Bartlomiej Zolnierkiewicz's avatar
      ide: preserve Host Protected Area by default (v2) · 075affcb
      Bartlomiej Zolnierkiewicz authored
      From the perspective of most users of recent systems, disabling Host
      Protected Area (HPA) can break vendor RAID formats, GPT partitions and
      risks corrupting firmware or overwriting vendor system recovery tools.
      
      Unfortunately the original (kernels < 2.6.30) behavior (unconditionally
      disabling HPA and using full disk capacity) was introduced at the time
      when the main use of HPA was to make the drive look small enough for the
      BIOS to allow the system to boot with large capacity drives.
      
      Thus to allow the maximum compatibility with the existing setups (using
      HPA and partitioned with HPA disabled) we automically disable HPA if
      any partitions overlapping HPA are detected.  Additionally HPA can also
      be disabled using the "nohpa" module parameter (i.e. "ide_core.nohpa=0.0"
      to disable HPA on /dev/hda).
      
      v2:
      Fix ->resume HPA support.
      
      While at it:
      - remove stale "idebus=" entry from Documentation/kernel-parameters.txt
      
      Cc: Robert Hancock <hancockrwd@gmail.com>
      Cc: Frans Pop <elendil@planet.nl>
      Cc: "Andries E. Brouwer" <Andries.Brouwer@cwi.nl>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Acked-by: default avatarSergei Shtylyov <sshtylyov@ru.mvista.com>
      [patch description was based on input from Alan Cox and Frans Pop]
      Emphatically-Acked-by: default avatarAlan Cox <alan@linux.intel.com>
      Signed-off-by: Bartlomiej Zolnierkiewicz's avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
      075affcb
    • Bartlomiej Zolnierkiewicz's avatar
      ide-gd: implement block device ->set_capacity method (v2) · e957b60d
      Bartlomiej Zolnierkiewicz authored
      * Use ->probed_capacity to store native device capacity for ATA disks.
      
      * Add ->set_capacity method to struct ide_disk_ops.
      
      * Implement disk device ->set_capacity method for ATA disks.
      
      * Implement block device ->set_capacity method.
      
      v2:
      * Check if LBA and HPA are supported in ide_disk_set_capacity().
      
      * According to the spec the SET MAX ADDRESS command shall be
        immediately preceded by a READ NATIVE MAX ADDRESS command.
      
      * Add ide_disk_hpa_{get_native,set}_capacity() helpers.
      
      Together with the previous patch adding ->set_capacity block device
      method this allows automatic disabling of Host Protected Area (HPA)
      if any partitions overlapping HPA are detected.
      
      Cc: Robert Hancock <hancockrwd@gmail.com>
      Cc: Frans Pop <elendil@planet.nl>
      Cc: "Andries E. Brouwer" <Andries.Brouwer@cwi.nl>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Emphatically-Acked-by: default avatarAlan Cox <alan@linux.intel.com>
      Signed-off-by: Bartlomiej Zolnierkiewicz's avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
      e957b60d
  27. 23 May, 2009 1 commit
  28. 17 May, 2009 1 commit
  29. 11 May, 2009 1 commit
  30. 28 Apr, 2009 1 commit
  31. 18 Apr, 2009 1 commit
  32. 08 Apr, 2009 2 commits
  33. 31 Mar, 2009 1 commit
  34. 27 Mar, 2009 1 commit