02 Nov, 2017

1 commit

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

    Greg Kroah-Hartman
     

22 Apr, 2008

1 commit


09 Jul, 2007

1 commit

  • New features: lock timeouts and time warnings. If the DLM_LKF_TIMEOUT
    flag is set, then the request/conversion will be canceled after waiting
    the specified number of centiseconds (specified per lock). This feature
    is only available for locks requested through libdlm (can be enabled for
    kernel dlm users if there's a use for it.)

    If the new DLM_LSFL_TIMEWARN flag is set when creating the lockspace, then
    a warning message will be sent to userspace (using genetlink) after a
    request/conversion has been waiting for a given number of centiseconds
    (configurable per node). The time warnings will be used in the future
    to do deadlock detection in userspace.

    Signed-off-by: David Teigland
    Signed-off-by: Steven Whitehouse

    David Teigland
     

01 May, 2007

1 commit

  • This patch consolidates the TCP & SCTP protocols for the DLM into a single file
    and makes it switchable at run-time (well, at least before the DLM actually
    starts up!)

    For RHEL5 this patch requires Neil Horman's patch that expands the in-kernel
    socket API but that has already been twice ACKed so it should be OK.

    The patch adds a new lowcomms.c file that replaces the existing lowcomms-sctp.c
    & lowcomms-tcp.c files.

    Signed-off-By: Patrick Caulfield
    Signed-off-by: Steven Whitehouse

    Patrick Caulfield
     

30 Nov, 2006

1 commit

  • The following patch adds a TCP based communications layer
    to the DLM which is compile time selectable. The existing SCTP
    layer gives the advantage of allowing multihoming, whereas
    the TCP layer has been heavily tested in previous versions of
    the DLM and is known to be robust and therefore can be used as
    a baseline for performance testing.

    Signed-off-by: Patrick Caulfield
    Signed-off-by: Steven Whitehouse

    Patrick Caulfield
     

13 Jul, 2006

1 commit

  • This changes the way the dlm handles user locks. The core dlm is now
    aware of user locks so they can be dealt with more efficiently. There is
    no more dlm_device module which previously managed its own duplicate copy
    of every user lock.

    Signed-off-by: Patrick Caulfield
    Signed-off-by: David Teigland
    Signed-off-by: Steven Whitehouse

    David Teigland
     

18 Jan, 2006

1 commit

  • This is the core of the distributed lock manager which is required
    to use GFS2 as a cluster filesystem. It is also used by CLVM and
    can be used as a standalone lock manager independantly of either
    of these two projects.

    It implements VAX-style locking modes.

    Signed-off-by: David Teigland
    Signed-off-by: Steve Whitehouse

    David Teigland