Eric Lee / smarc-fsl-linux-kernel

30 May, 2016

1 commit

02 May, 2016

1 commit

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
     

19 Apr, 2015

1 commit

  • dba94f215   Merge tag 'for-linus-4.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs ... Browse Code »

    Pull 9pfs updates from Eric Van Hensbergen:
    "Some accumulated cleanup patches for kerneldoc and unused variables as
    well as some lock bug fixes and adding privateport option for RDMA"

    * tag 'for-linus-4.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
    net/9p: add a privport option for RDMA transport.
    fs/9p: Initialize status in v9fs_file_do_lock.
    net/9p: Initialize opts->privport as it should be.
    net/9p: use memcpy() instead of snprintf() in p9_mount_tag_show()
    9p: use unsigned integers for nwqid/count
    9p: do not crash on unknown lock status code
    9p: fix error handling in v9fs_file_do_lock
    9p: remove unused variable in p9_fd_create()
    9p: kerneldoc warning fixes

    Linus Torvalds
     

12 Apr, 2015

6 commits

26 Mar, 2015

1 commit

20 Mar, 2015

1 commit

  • e8782e2fb   9p: kerneldoc warning fixes ... Browse Code »

    options argument was removed from v9fs_session_info in commit 4b53e4b50077
    ("9p: remove unnecessary v9fses->options which duplicates the mount string")

    iov and nr_segs were removed from v9fs_direct_IO
    in commit d8d3d94b80aa
    ("pass iov_iter to ->direct_IO()")

    Cc: Eric Van Hensbergen
    Cc: Ron Minnich
    Cc: Latchesar Ionkov
    Cc: v9fs-developer@lists.sourceforge.net
    Signed-off-by: Fabian Frederick
    Signed-off-by: Dominique Martinet
    Signed-off-by: Eric Van Hensbergen

    Fabian Frederick
     

09 Oct, 2014

1 commit

07 May, 2014

1 commit

10 Jan, 2014

1 commit

22 May, 2013

1 commit

  • d47992f86   mm: change invalidatepage prototype to accept length ... Browse Code »

    Currently there is no way to truncate partial page where the end
    truncate point is not at the end of the page. This is because it was not
    needed and the functionality was enough for file system truncate
    operation to work properly. However more file systems now support punch
    hole feature and it can benefit from mm supporting truncating page just
    up to the certain point.

    Specifically, with this functionality truncate_inode_pages_range() can
    be changed so it supports truncating partial page at the end of the
    range (currently it will BUG_ON() if 'end' is not at the end of the
    page).

    This commit changes the invalidatepage() address space operation
    prototype to accept range to be invalidated and update all the instances
    for it.

    We also change the block_invalidatepage() in the same way and actually
    make a use of the new length argument implementing range invalidation.

    Actual file system implementations will follow except the file systems
    where the changes are really simple and should not change the behaviour
    in any way .Implementation for truncate_page_range() which will be able
    to accept page unaligned ranges will follow as well.

    Signed-off-by: Lukas Czerner
    Cc: Andrew Morton
    Cc: Hugh Dickins

    Lukas Czerner
     

08 May, 2013

1 commit

  • a27bb332c   aio: don't include aio.h in sched.h ... Browse Code »

    Faster kernel compiles by way of fewer unnecessary includes.

    [akpm@linux-foundation.org: fix fallout]
    [akpm@linux-foundation.org: fix build]
    Signed-off-by: Kent Overstreet
    Cc: Zach Brown
    Cc: Felipe Balbi
    Cc: Greg Kroah-Hartman
    Cc: Mark Fasheh
    Cc: Joel Becker
    Cc: Rusty Russell
    Cc: Jens Axboe
    Cc: Asai Thambi S P
    Cc: Selvan Mani
    Cc: Sam Bradshaw
    Cc: Jeff Moyer
    Cc: Al Viro
    Cc: Benjamin LaHaise
    Reviewed-by: "Theodore Ts'o"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kent Overstreet
     

06 Jan, 2012

1 commit

  • 5d3851530   9p: Reduce object size with CONFIG_NET_9P_DEBUG ... Browse Code »

    Reduce object size by deduplicating formats.

    Use vsprintf extension %pV.
    Rename P9_DPRINTK uses to p9_debug, align arguments.
    Add function for _p9_debug and macro to add __func__.
    Add missing "\n"s to p9_debug uses.
    Remove embedded function names as p9_debug adds it.
    Remove P9_EPRINTK macro and convert use to pr_.
    Add and use pr_fmt and pr_.

    $ size fs/9p/built-in.o*
    text data bss dec hex filename
    62133 984 16000 79117 1350d fs/9p/built-in.o.new
    67342 984 16928 85254 14d06 fs/9p/built-in.o.old
    $ size net/9p/built-in.o*
    text data bss dec hex filename
    88792 4148 22024 114964 1c114 net/9p/built-in.o.new
    94072 4148 23232 121452 1da6c net/9p/built-in.o.old

    Signed-off-by: Joe Perches
    Signed-off-by: Eric Van Hensbergen

    Joe Perches
     

15 Mar, 2011

4 commits

28 Oct, 2010

1 commit

  • 3e24ad2ff   9p: Add a Direct IO support for non-cached operations. ... Browse Code »

    The presence of v9fs_direct_IO() in the address space ops vector
    allowes open() O_DIRECT flags which would have failed otherwise.

    In the non-cached mode, we shunt off direct read and write requests before
    the VFS gets them, so this method should never be called.

    Direct IO is not 'yet' supported in the cached mode. Hence when
    this routine is called through generic_file_aio_read(), the read/write fails
    with an error.

    Signed-off-by: Venkateswararao Jujjuri
    Signed-off-by: Eric Van Hensbergen

    jvrao
     

24 Sep, 2009

1 commit

  • 60e78d2c9   9p: Add fscache support to 9p ... Browse Code »

    This patch adds a persistent, read-only caching facility for
    9p clients using the FS-Cache caching backend.

    When the fscache facility is enabled, each inode is associated
    with a corresponding vcookie which is an index into the FS-Cache
    indexing tree. The FS-Cache indexing tree is indexed at 3 levels:
    - session object associated with each mount.
    - inode/vcookie
    - actual data (pages)

    A cache tag is chosen randomly for each session. These tags can
    be read off /sys/fs/9p/caches and can be passed as a mount-time
    parameter to re-attach to the specified caching session.

    Signed-off-by: Abhishek Kulkarni
    Signed-off-by: Eric Van Hensbergen

    Abhishek Kulkarni
     

15 Jul, 2009

1 commit

18 Oct, 2008

1 commit

  • fbedadc16   9p: move readn meta-function from client to fs layer ... Browse Code »

    There are a couple of methods in the client code which aren't actually
    wire operations. To keep things organized cleaner, these operations are
    being moved to the fs layer.

    This patch moves the readn meta-function (which executes multiple wire
    reads until a buffer is full) to the fs layer.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     

15 May, 2008

1 commit

  • ee443996a   9p: Documentation updates ... Browse Code »

    The kernel-doc comments of much of the 9p system have been in disarray since
    reorganization. This patch fixes those problems, adds additional documentation
    and a template book which collects the 9p information.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     

15 Jul, 2007

1 commit

  • bd238fb43   9p: Reorganization of 9p file system code ... Browse Code »

    This patchset moves non-filesystem interfaces of v9fs from fs/9p to net/9p.
    It moves the transport, packet marshalling and connection layers to net/9p
    leaving only the VFS related files in fs/9p. This work is being done in
    preparation for in-kernel 9p servers as well as alternate 9p clients (other
    than VFS).

    Signed-off-by: Latchesar Ionkov
    Signed-off-by: Eric Van Hensbergen

    Latchesar Ionkov
     

22 May, 2007

1 commit

  • e8edc6e03   Detach sched.h from mm.h ... Browse Code »

    First thing mm.h does is including sched.h solely for can_do_mlock() inline
    function which has "current" dereference inside. By dealing with can_do_mlock()
    mm.h can be detached from sched.h which is good. See below, why.

    This patch
    a) removes unconditional inclusion of sched.h from mm.h
    b) makes can_do_mlock() normal function in mm/mlock.c
    c) exports can_do_mlock() to not break compilation
    d) adds sched.h inclusions back to files that were getting it indirectly.
    e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
    getting them indirectly

    Net result is:
    a) mm.h users would get less code to open, read, preprocess, parse, ... if
    they don't need sched.h
    b) sched.h stops being dependency for significant number of files:
    on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
    after patch it's only 3744 (-8.3%).

    Cross-compile tested on

    all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
    alpha alpha-up
    arm
    i386 i386-up i386-defconfig i386-allnoconfig
    ia64 ia64-up
    m68k
    mips
    parisc parisc-up
    powerpc powerpc-up
    s390 s390-up
    sparc sparc-up
    sparc64 sparc64-up
    um-x86_64
    x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig

    as well as my two usual configs.

    Signed-off-by: Alexey Dobriyan
    Signed-off-by: Linus Torvalds

    Alexey Dobriyan
     

09 May, 2007

1 commit

19 Feb, 2007

1 commit

  • e03abc0c9   9p: implement optional loose read cache ... Browse Code »

    While cacheing is generally frowned upon in the 9p world, it has its
    place -- particularly in situations where the remote file system is
    exclusive and/or read-only. The vacfs views of venti content addressable
    store are a real-world instance of such a situation. To facilitate higher
    performance for these workloads (and eventually use the fscache patches),
    we have enabled a "loose" cache mode which does not attempt to maintain
    any form of consistency on the page-cache or dcache. This results in over
    two orders of magnitude performance improvement for cacheable block reads
    in the Bonnie benchmark. The more aggressive use of the dcache also seems
    to improve metadata operational performance.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     

09 Dec, 2006

1 commit

01 Jul, 2006

1 commit

29 Jun, 2006

1 commit

26 Mar, 2006

1 commit

  • 42e8c509c   [PATCH] v9fs: update license boilerplate ... Browse Code »

    Update license boilerplate to specify GPLv2 and remove the (at your option
    clause). This change was agreed to by all the copyright holders (approvals
    can be found on v9fs-developer mailing list).

    Signed-off-by: Eric Van Hensbergen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Eric Van Hensbergen
     

19 Jan, 2006

1 commit

  • 147b31cf0   [PATCH] v9fs: add readpage support ... Browse Code »

    v9fs mmap support was originally removed from v9fs at Al Viro's request,
    but recently there have been requests from folks who want readpage
    functionality (primarily to enable execution of files mounted via 9P).
    This patch adds readpage support (but not writepage which contained most of
    the objectionable code). It passes fsx-linux (and other regressions) so it
    should be relatively safe.

    Signed-off-by: Eric Van Hensbergen
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Eric Van Hensbergen