Eric Lee / smarc-fsl-linux-kernel

29 Jan, 2018

1 commit

02 Nov, 2017

1 commit

  • b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

    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
     

18 Jun, 2017

2 commits

15 Jun, 2017

2 commits

  • a8fad9848   ufs_truncate_blocks(): fix the case when size is in the last direct block ... Browse Code »

    The logics when deciding whether we need to do anything with direct blocks
    is broken when new size is within the last direct block. It's better to
    find the path to the last byte _not_ to be removed and use that instead
    of the path to the beginning of the first block to be freed...

    Signed-off-by: Al Viro

    Al Viro
     
  • 09bf4f5b6   ufs: avoid grabbing ->truncate_mutex if possible ... Browse Code »

    tail unpacking is done in a wrong place; the deadlocks galore
    is best dealt with by doing that in ->write_iter() (and switching
    to iomap, while we are at it), but that's rather painful to
    backport. The trouble comes from grabbing pages that cover
    the beginning of tail from inside of ufs_new_fragments(); ongoing
    pageout of any of those is going to deadlock on ->truncate_mutex
    with process that got around to extending the tail holding that
    and waiting for page to get unlocked, while ->writepage() on
    that page is waiting on ->truncate_mutex.

    The thing is, we don't need ->truncate_mutex when the fragment
    we are trying to map is within the tail - the damn thing is
    allocated (tail can't contain holes).

    Let's do a plain lookup and if the fragment is present, we can
    just pretend that we'd won the race in almost all cases. The
    only exception is a fragment between the end of tail and the
    end of block containing tail.

    Protect ->i_lastfrag with ->meta_lock - read_seqlock_excl() is
    sufficient.

    Signed-off-by: Al Viro

    Al Viro
     

11 Jun, 2017

1 commit

10 Jun, 2017

4 commits

25 Dec, 2016

1 commit

23 Dec, 2016

1 commit

05 Nov, 2016

1 commit

  • e64855c6c   fs: Add helper to clean bdev aliases under a bh and use it ... Browse Code »

    Add a helper function that clears buffer heads from a block device
    aliasing passed bh. Use this helper function from filesystems instead of
    the original unmap_underlying_metadata() to save some boiler plate code
    and also have a better name for the functionalily since it is not
    unmapping anything for a *long* time.

    Signed-off-by: Jan Kara
    Signed-off-by: Jens Axboe

    Jan Kara
     

11 Oct, 2016

1 commit

  • 101105b17   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs ... Browse Code »

    Pull more vfs updates from Al Viro:
    ">rename2() work from Miklos + current_time() from Deepa"

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
    fs: Replace current_fs_time() with current_time()
    fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps
    fs: Replace CURRENT_TIME with current_time() for inode timestamps
    fs: proc: Delete inode time initializations in proc_alloc_inode()
    vfs: Add current_time() api
    vfs: add note about i_op->rename changes to porting
    fs: rename "rename2" i_op to "rename"
    vfs: remove unused i_op->rename
    fs: make remaining filesystems use .rename2
    libfs: support RENAME_NOREPLACE in simple_rename()
    fs: support RENAME_NOREPLACE for local filesystems
    ncpfs: fix unused variable warning

    Linus Torvalds
     

28 Sep, 2016

1 commit

  • 02027d42c   fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps ... Browse Code »

    CURRENT_TIME_SEC is not y2038 safe. current_time() will
    be transitioned to use 64 bit time along with vfs in a
    separate patch.
    There is no plan to transistion CURRENT_TIME_SEC to use
    y2038 safe time interfaces.

    current_time() will also be extended to use superblock
    range checking parameters when range checking is introduced.

    This works because alloc_super() fills in the the s_time_gran
    in super block to NSEC_PER_SEC.

    Signed-off-by: Deepa Dinamani
    Acked-by: Jan Kara
    Signed-off-by: Al Viro

    Deepa Dinamani
     

22 Sep, 2016

1 commit

  • 31051c85b   fs: Give dentry to inode_change_ok() instead of inode ... Browse Code »

    inode_change_ok() will be resposible for clearing capabilities and IMA
    extended attributes and as such will need dentry. Give it as an argument
    to inode_change_ok() instead of an inode. Also rename inode_change_ok()
    to setattr_prepare() to better relect that it does also some
    modifications in addition to checks.

    Reviewed-by: Christoph Hellwig
    Signed-off-by: Jan Kara

    Jan Kara
     

05 Apr, 2016

1 commit

  • 09cbfeaf1   mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros ... Browse Code »

    PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
    ago with promise that one day it will be possible to implement page
    cache with bigger chunks than PAGE_SIZE.

    This promise never materialized. And unlikely will.

    We have many places where PAGE_CACHE_SIZE assumed to be equal to
    PAGE_SIZE. And it's constant source of confusion on whether
    PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
    especially on the border between fs and mm.

    Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
    breakage to be doable.

    Let's stop pretending that pages in page cache are special. They are
    not.

    The changes are pretty straight-forward:

    - << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

    - >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> ;

    - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};

    - page_cache_get() -> get_page();

    - page_cache_release() -> put_page();

    This patch contains automated changes generated with coccinelle using
    script below. For some reason, coccinelle doesn't patch header files.
    I've called spatch for them manually.

    The only adjustment after coccinelle is revert of changes to
    PAGE_CAHCE_ALIGN definition: we are going to drop it later.

    There are few places in the code where coccinelle didn't reach. I'll
    fix them manually in a separate patch. Comments and documentation also
    will be addressed with the separate patch.

    virtual patch

    @@
    expression E;
    @@
    - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
    + E

    @@
    expression E;
    @@
    - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
    + E

    @@
    @@
    - PAGE_CACHE_SHIFT
    + PAGE_SHIFT

    @@
    @@
    - PAGE_CACHE_SIZE
    + PAGE_SIZE

    @@
    @@
    - PAGE_CACHE_MASK
    + PAGE_MASK

    @@
    expression E;
    @@
    - PAGE_CACHE_ALIGN(E)
    + PAGE_ALIGN(E)

    @@
    expression E;
    @@
    - page_cache_get(E)
    + get_page(E)

    @@
    expression E;
    @@
    - page_cache_release(E)
    + put_page(E)

    Signed-off-by: Kirill A. Shutemov
    Acked-by: Michal Hocko
    Signed-off-by: Linus Torvalds

    Kirill A. Shutemov
     

09 Dec, 2015

1 commit

  • 21fc61c73   don't put symlink bodies in pagecache into highmem ... Browse Code »

    kmap() in page_follow_link_light() needed to go - allowing to hold
    an arbitrary number of kmaps for long is a great way to deadlocking
    the system.

    new helper (inode_nohighmem(inode)) needs to be used for pagecache
    symlinks inodes; done for all in-tree cases. page_follow_link_light()
    instrumented to yell about anything missed.

    Signed-off-by: Al Viro

    Al Viro
     

07 Dec, 2015

1 commit

  • 9cdce3c07   ufs: get rid of ->setattr() for symlinks ... Browse Code »

    It was to needed for a couple of months in 2010, until UFS
    quota support got dropped. Since then it's equivalent to
    simple_setattr() (i.e. the default) for everything except the
    regular files. And dropping it there allows to convert all
    UFS symlinks to {page,simple}_symlink_inode_operations, getting
    rid of fs/ufs/symlink.c completely.

    Signed-off-by: Al Viro

    Al Viro
     

07 Jul, 2015

20 commits