Eric Lee / smarc-fsl-linux-kernel

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
     

26 Mar, 2006

2 commits

03 Mar, 2006

1 commit

  • 46f6dac25   [PATCH] v9fs: simplify fid mapping ... Browse Code »

    v9fs has been plagued by an over-complicated approach trying to map Linux
    dentry semantics to Plan 9 fid semantics. Our previous approach called for
    aggressive flushing of the dcache resulting in several problems (including
    wierd cwd behavior when running /bin/pwd).

    This patch dramatically simplifies our handling of this fid management. Fids
    will not be clunked as promptly, but the new approach is more functionally
    correct. We now clunk un-open fids only when their dentry ref_count reaches 0
    (and d_delete is called).

    Another simplification is we no longer seek to match fids to the process-id or
    uid of the action initiator. The uid-matching will need to be revisited when
    we fix the security model.

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

    Eric Van Hensbergen
     

09 Jan, 2006

2 commits

28 Sep, 2005

1 commit

  • 0b8dd1776   [PATCH] v9fs: fix races in fid allocation ... Browse Code »

    Fid management cleanup. The patch attempts to fix the races in dentry's
    fid management.

    Dentries don't keep the opened fids anymore, they are moved to the file
    structs. Ideally there should be no more than one fid with fidcreate equal
    to zero in the dentry's list of fids.

    v9fs_fid_create initializes the important fields (fid, fidcreated) before
    v9fs_fid is added to the list. v9fs_fid_lookup returns only fids that are
    not created by v9fs_create. v9fs_fid_get_created returns the fid created
    by the same process by v9fs_create (if any) and removes it from dentry's
    list

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

    Latchesar Ionkov
     

10 Sep, 2005

1 commit