Eric Lee / smarc-ti-linux-kernel

09 Oct, 2014

1 commit

30 Sep, 2013

1 commit

08 Sep, 2013

1 commit

06 Sep, 2013

1 commit

29 Jun, 2013

1 commit

23 Feb, 2013

1 commit

14 Jul, 2012

3 commits

04 Jan, 2012

2 commits

16 Jun, 2011

1 commit

28 May, 2011

1 commit

26 May, 2011

2 commits

16 Jan, 2011

1 commit

13 Jan, 2011

1 commit

07 Jan, 2011

3 commits

  • 34286d666   fs: rcu-walk aware d_revalidate method ... Browse Code »
    2

    Require filesystems be aware of .d_revalidate being called in rcu-walk
    mode (nd->flags & LOOKUP_RCU). For now do a simple push down, returning
    -ECHILD from all implementations.

    Signed-off-by: Nick Piggin

    Nick Piggin
     
  • fb045adb9   fs: dcache reduce branches in lookup path ... Browse Code »

    Reduce some branches and memory accesses in dcache lookup by adding dentry
    flags to indicate common d_ops are set, rather than having to check them.
    This saves a pointer memory access (dentry->d_op) in common path lookup
    situations, and saves another pointer load and branch in cases where we
    have d_op but not the particular operation.

    Patched with:

    git grep -E '[.>]([[:space:]])*d_op([[:space:]])*=' | xargs sed -e 's/\([^\t ]*\)->d_op = \(.*\);/d_set_d_op(\1, \2);/' -e 's/\([^\t ]*\)\.d_op = \(.*\);/d_set_d_op(\&\1, \2);/' -i

    Signed-off-by: Nick Piggin

    Nick Piggin
     
  • fe15ce446   fs: change d_delete semantics ... Browse Code »

    Change d_delete from a dentry deletion notification to a dentry caching
    advise, more like ->drop_inode. Require it to be constant and idempotent,
    and not take d_lock. This is how all existing filesystems use the callback
    anyway.

    This makes fine grained dentry locking of dput and dentry lru scanning
    much simpler.

    Signed-off-by: Nick Piggin

    Nick Piggin
     

26 Oct, 2010

1 commit

12 Aug, 2010

1 commit

  • bec5eb614   AFS: Implement an autocell mount capability [ver #2] ... Browse Code »

    Implement the ability for the root directory of a mounted AFS filesystem to
    accept lookups of arbitrary directory names, to interpet the names as the names
    of cells, to look the cell names up in the DNS for AFSDB records and to mount
    the root.cell volume of the nominated cell on the pseudo-directory created by
    lookup.

    This facility is requested by passing:

    -o autocell

    to the mountpoint for which this is desired, usually the /afs mount.

    To use this facility, a DNS upcall program is required for AFSDB records. This
    can be obtained from:

    http://people.redhat.com/~dhowells/afs/dns.afsdb.c

    It should be compiled with -lresolv and -lkeyutils and installed as, say:

    /usr/sbin/dns.afsdb

    Then the following line needs to be added to /sbin/request-key.conf:

    create dns_resolver afsdb:* * /usr/sbin/dns.afsdb %k

    This can be tested by mounting AFS, say:

    insmod dns_resolver.ko
    insmod af-rxrpc.ko
    insmod kafs.ko rootcell=grand.central.org
    mount -t afs "#grand.central.org:root.cell." /afs -o autocell

    and doing:

    ls /afs/grand.central.org/

    which should show:

    archive/ cvs/ doc/ local/ project/ service/ software/ user/ www/

    if it works.

    Signed-off-by: Wang Lei
    Signed-off-by: David Howells
    Signed-off-by: Steve French

    wanglei
     

22 May, 2010

1 commit

  • f6d335c08   AFS: Don't put struct file on the stack ... Browse Code »

    Don't put struct file on the stack as it takes up quite a lot of space
    and violates lifetime rules for struct file.

    Rather than calling afs_readpage() indirectly from the directory routines by
    way of read_mapping_page(), split afs_readpage() to have afs_page_filler()
    that's given a key instead of a file and call read_cache_page(), specifying the
    new function directly. Use it in afs_readpages() as well.

    Also make use of this in afs_mntpt_check_symlink() too for the same reason.

    Reported-by: Al Viro
    Signed-off-by: Al Viro
    Signed-off-by: David Howells

    Al Viro
     

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

13 Jul, 2009

1 commit

  • dd0d9a46f   AFS: Fix compilation warning ... Browse Code »

    Fix the following warning:

    fs/afs/dir.c: In function 'afs_d_revalidate':
    fs/afs/dir.c:567: warning: 'fid.vnode' may be used uninitialized in this function
    fs/afs/dir.c:567: warning: 'fid.unique' may be used uninitialized in this function

    by marking the 'fid' variable as an uninitialized_var. The problem is
    that gcc doesn't always manage to work out that fid is always set on the
    path through the function that uses it.

    Cc: linux-afs@lists.infradead.org
    Cc: linux-kernel@vger.kernel.org
    Signed-off-by: Artem Bityutskiy
    Signed-off-by: David Howells
    Signed-off-by: Linus Torvalds

    Artem Bityutskiy
     

28 Mar, 2009

1 commit

23 Oct, 2008

1 commit

30 Apr, 2008

1 commit

08 Feb, 2008

1 commit

29 Jan, 2008

1 commit

  • 7a224228e   vfs: Add 64 bit i_version support ... Browse Code »

    The i_version field of the inode is changed to be a 64-bit counter that
    is set on every inode creation and that is incremented every time the
    inode data is modified (similarly to the "ctime" time-stamp).
    The aim is to fulfill a NFSv4 requirement for rfc3530.
    This first part concerns the vfs, it converts the 32-bit i_version in
    the generic inode to a 64-bit, a flag is added in the super block in
    order to check if the feature is enabled and the i_version is
    incremented in the vfs.

    Signed-off-by: Mingming Cao
    Signed-off-by: Jean Noel Cordenner
    Signed-off-by: Kalpak Shah

    Jean Noel Cordenner
     

17 Jul, 2007

1 commit

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
     

11 May, 2007

1 commit

10 May, 2007

2 commits

  • 31143d5d5   AFS: implement basic file write support ... Browse Code »

    Implement support for writing to regular AFS files, including:

    (1) write

    (2) truncate

    (3) fsync, fdatasync

    (4) chmod, chown, chgrp, utime.

    AFS writeback attempts to batch writes into as chunks as large as it can manage
    up to the point that it writes back 65535 pages in one chunk or it meets a
    locked page.

    Furthermore, if a page has been written to using a particular key, then should
    another write to that page use some other key, the first write will be flushed
    before the second is allowed to take place. If the first write fails due to a
    security error, then the page will be scrapped and reread before the second
    write takes place.

    If a page is dirty and the callback on it is broken by the server, then the
    dirty data is not discarded (same behaviour as NFS).

    Shared-writable mappings are not supported by this patch.

    [akpm@linux-foundation.org: fix a bunch of warnings]
    Signed-off-by: David Howells
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     
  • 416351f28   AFS: AFS fixups ... Browse Code »

    Make some miscellaneous changes to the AFS filesystem:

    (1) Assert RCU barriers on module exit to make sure RCU has finished with
    callbacks in this module.

    (2) Correctly handle the AFS server returning a zero-length read.

    (3) Split out data zapping calls into one function (afs_zap_data).

    (4) Rename some afs_file_*() functions to afs_*() where they apply to
    non-regular files too.

    (5) Be consistent about the presentation of volume ID:vnode ID in debugging
    output.

    Signed-off-by: David Howells
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     

08 May, 2007

1 commit

  • 6fe6900e1   mm: make read_cache_page synchronous ... Browse Code »

    Ensure pages are uptodate after returning from read_cache_page, which allows
    us to cut out most of the filesystem-internal PageUptodate calls.

    I didn't have a great look down the call chains, but this appears to fixes 7
    possible use-before uptodate in hfs, 2 in hfsplus, 1 in jfs, a few in
    ecryptfs, 1 in jffs2, and a possible cleared data overwritten with readpage in
    block2mtd. All depending on whether the filler is async and/or can return
    with a !uptodate page.

    Signed-off-by: Nick Piggin
    Cc: Hugh Dickins
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Nick Piggin
     

27 Apr, 2007

4 commits

  • ba3e0e1ac   [AFS]: Fix u64 printing in debug logging. ... Browse Code »

    Need 'unsigned long long' casts to quiet warnings on
    64-bit platforms when using %ll on a u64.

    Signed-off-by: David S. Miller

    David S. Miller
     
  • 260a98031   [AFS]: Add "directory write" support. ... Browse Code »

    Add support for the create, link, symlink, unlink, mkdir, rmdir and
    rename VFS operations to the in-kernel AFS filesystem.

    Also:

    (1) Fix dentry and inode revalidation. d_revalidate should only look at
    state of the dentry. Revalidation of the contents of an inode pointed to
    by a dentry is now separate.

    (2) Fix afs_lookup() to hash negative dentries as well as positive ones.

    Signed-off-by: David Howells
    Signed-off-by: David S. Miller

    David Howells
     
  • 00d3b7a45   [AFS]: Add security support. ... Browse Code »

    Add security support to the AFS filesystem. Kerberos IV tickets are added as
    RxRPC keys are added to the session keyring with the klog program. open() and
    other VFS operations then find this ticket with request_key() and either use
    it immediately (eg: mkdir, unlink) or attach it to a file descriptor (open).

    Signed-off-by: David Howells
    Signed-off-by: David S. Miller

    David Howells
     
  • 08e0e7c82   [AF_RXRPC]: Make the in-kernel AFS filesystem use AF_RXRPC. ... Browse Code »
    14

    Make the in-kernel AFS filesystem use AF_RXRPC instead of the old RxRPC code.

    Signed-off-by: David Howells
    Signed-off-by: David S. Miller

    David Howells