Doug / smarc-fsl-linux-kernel

13 Sep, 2010

1 commit

11 Aug, 2010

1 commit

  • 5f248c9c2   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 ... Browse Code »

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: (96 commits)
    no need for list_for_each_entry_safe()/resetting with superblock list
    Fix sget() race with failing mount
    vfs: don't hold s_umount over close_bdev_exclusive() call
    sysv: do not mark superblock dirty on remount
    sysv: do not mark superblock dirty on mount
    btrfs: remove junk sb_dirt change
    BFS: clean up the superblock usage
    AFFS: wait for sb synchronization when needed
    AFFS: clean up dirty flag usage
    cifs: truncate fallout
    mbcache: fix shrinker function return value
    mbcache: Remove unused features
    add f_flags to struct statfs(64)
    pass a struct path to vfs_statfs
    update VFS documentation for method changes.
    All filesystems that need invalidate_inode_buffers() are doing that explicitly
    convert remaining ->clear_inode() to ->evict_inode()
    Make ->drop_inode() just return whether inode needs to be dropped
    fs/inode.c:clear_inode() is gone
    fs/inode.c:evict() doesn't care about delete vs. non-delete paths now
    ...

    Fix up trivial conflicts in fs/nilfs2/super.c

    Linus Torvalds
     

10 Aug, 2010

1 commit

03 Aug, 2010

3 commits

  • a534c8d15   fs/9p: Prevent parallel rename when doing fid_lookup ... Browse Code »

    During fid lookup we need to make sure that the dentry->d_parent doesn't
    change so that we can safely walk the parent dentries. To ensure that
    we need to prevent cross directory rename during fid_lookup. Add a
    per superblock rename_sem rw_semaphore to prevent parallel fid lookup and
    rename.

    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Venkateswararao Jujjuri
    Signed-off-by: Eric Van Hensbergen

    Aneesh Kumar K.V
     
  • ebf46264a   fs/9p: Add support user. xattr ... Browse Code »

    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Venkateswararao Jujjuri
    Signed-off-by: Eric Van Hensbergen

    Aneesh Kumar K.V
     
  • f08531220   9p: getattr client implementation for 9P2000.L protocol. ... Browse Code »

    SYNOPSIS

    size[4] Tgetattr tag[2] fid[4] request_mask[8]

    size[4] Rgetattr tag[2] lstat[n]

    DESCRIPTION

    The getattr transaction inquires about the file identified by fid.
    request_mask is a bit mask that specifies which fields of the
    stat structure is the client interested in.

    The reply will contain a machine-independent directory entry,
    laid out as follows:

    st_result_mask[8]
    Bit mask that indicates which fields in the stat structure
    have been populated by the server

    qid.type[1]
    the type of the file (directory, etc.), represented as a bit
    vector corresponding to the high 8 bits of the file's mode
    word.

    qid.vers[4]
    version number for given path

    qid.path[8]
    the file server's unique identification for the file

    st_mode[4]
    Permission and flags

    st_uid[4]
    User id of owner

    st_gid[4]
    Group ID of owner

    st_nlink[8]
    Number of hard links

    st_rdev[8]
    Device ID (if special file)

    st_size[8]
    Size, in bytes

    st_blksize[8]
    Block size for file system IO

    st_blocks[8]
    Number of file system blocks allocated

    st_atime_sec[8]
    Time of last access, seconds

    st_atime_nsec[8]
    Time of last access, nanoseconds

    st_mtime_sec[8]
    Time of last modification, seconds

    st_mtime_nsec[8]
    Time of last modification, nanoseconds

    st_ctime_sec[8]
    Time of last status change, seconds

    st_ctime_nsec[8]
    Time of last status change, nanoseconds

    st_btime_sec[8]
    Time of creation (birth) of file, seconds

    st_btime_nsec[8]
    Time of creation (birth) of file, nanoseconds

    st_gen[8]
    Inode generation

    st_data_version[8]
    Data version number

    request_mask and result_mask bit masks contain the following bits
    #define P9_STATS_MODE 0x00000001ULL
    #define P9_STATS_NLINK 0x00000002ULL
    #define P9_STATS_UID 0x00000004ULL
    #define P9_STATS_GID 0x00000008ULL
    #define P9_STATS_RDEV 0x00000010ULL
    #define P9_STATS_ATIME 0x00000020ULL
    #define P9_STATS_MTIME 0x00000040ULL
    #define P9_STATS_CTIME 0x00000080ULL
    #define P9_STATS_INO 0x00000100ULL
    #define P9_STATS_SIZE 0x00000200ULL
    #define P9_STATS_BLOCKS 0x00000400ULL

    #define P9_STATS_BTIME 0x00000800ULL
    #define P9_STATS_GEN 0x00001000ULL
    #define P9_STATS_DATA_VERSION 0x00002000ULL

    #define P9_STATS_BASIC 0x000007ffULL
    #define P9_STATS_ALL 0x00003fffULL

    This patch implements the client side of getattr implementation for
    9P2000.L. It introduces a new structure p9_stat_dotl for getting
    Linux stat information along with QID. The data layout is similar to
    stat structure in Linux user space with the following major
    differences:

    inode (st_ino) is not part of data. Instead qid is.

    device (st_dev) is not part of data because this doesn't make sense
    on the client.

    All time variables are 64 bit wide on the wire. The kernel seems to use
    32 bit variables for these variables. However, some of the architectures
    have used 64 bit variables and glibc exposes 64 bit variables to user
    space on some architectures. Hence to be on the safer side we have made
    these 64 bit in the protocol. Refer to the comments in
    include/asm-generic/stat.h

    There are some additional fields: st_btime_sec, st_btime_nsec, st_gen,
    st_data_version apart from the bitmask, st_result_mask. The bit mask
    is filled by the server to indicate which stat fields have been
    populated by the server. Currently there is no clean way for the
    server to obtain these additional fields, so it sends back just the
    basic fields.

    Signed-off-by: Sripathi Kodi
    Signed-off-by: Eric Van Hensbegren

    Sripathi Kodi
     

22 May, 2010

2 commits

  • bda8e7752   9p: add 9P2000.L statfs operation ... Browse Code »

    I made a V2 of this patch on top of my patches for VFS switches. The
    change was adding v9fs_statfs pointer to v9fs_super_ops_dotl
    instead of v9fs_super_ops.

    statfs - get file system statistics

    size[4] Tstatfs tag[2] fid[4]
    size[4] Rstatfs tag[2] type[4] bsize[4] blocks[8] bfree[8] bavail[8]
    files[8] ffree[8] fsid[8] namelen[4]

    The statfs message is used to request file system information returned
    by the statfs(2) system call, which is used by df(1) to report file
    system and disk space usage.

    Signed-off-by: Jim Garlick
    Signed-off-by: Sripathi Kodi
    Signed-off-by: Eric Van Hensbergen

    Sripathi Kodi
     
  • 9b6533c9b   9p: VFS switches for 9p2000.L: VFS switches ... Browse Code »

    Implements VFS switches for 9p2000.L protocol.

    Signed-off-by: Sripathi Kodi
    Signed-off-by: Eric Van Hensbergen

    Sripathi Kodi
     

22 Apr, 2010

1 commit

06 Apr, 2010

1 commit

  • 749d22976   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs ... Browse Code »

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
    9p: saving negative to unsigned char
    9p: return on mutex_lock_interruptible()
    9p: Creating files with names too long should fail with ENAMETOOLONG.
    9p: Make sure we are able to clunk the cached fid on umount
    9p: drop nlink remove
    fs/9p: Clunk the fid resulting from partial walk of the name
    9p: documentation update
    9p: Fix setting of protocol flags in v9fs_session_info structure.

    Linus Torvalds
     

05 Apr, 2010

1 commit

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
     

27 Jan, 2010

1 commit

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
     

18 Aug, 2009

4 commits

17 Jun, 2009

1 commit

09 May, 2009

3 commits

28 Mar, 2009

1 commit

  • a3ec947c8   vfs: simple_set_mnt() should return void ... Browse Code »

    simple_set_mnt() is defined as returning 'int' but always returns 0.
    Callers assume simple_set_mnt() never fails and don't properly cleanup if
    it were to _ever_ fail. For instance, get_sb_single() and get_sb_nodev()
    should:

    up_write(sb->s_unmount);
    deactivate_super(sb);

    if simple_set_mnt() fails.

    Since simple_set_mnt() never fails, would be cleaner if it did not
    return anything.

    [akpm@linux-foundation.org: fix build]
    Signed-off-by: Sukadev Bhattiprolu
    Acked-by: Serge Hallyn
    Cc: Al Viro
    Cc: Christoph Hellwig
    Signed-off-by: Andrew Morton
    Signed-off-by: Al Viro

    Sukadev Bhattiprolu
     

14 Nov, 2008

1 commit

  • f8b9d53a3   CRED: Wrap task credential accesses in 9P2000 filesystem ... Browse Code »

    Wrap access to task credentials so that they can be separated more easily from
    the task_struct during the introduction of COW creds.

    Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id().

    Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more
    sense to use RCU directly rather than a convenient wrapper; these will be
    addressed by later patches.

    Signed-off-by: David Howells
    Reviewed-by: James Morris
    Acked-by: Serge Hallyn
    Reviewed-by: Eric Van Hensbergen
    Cc: Ron Minnich
    Cc: Latchesar Ionkov
    Cc: v9fs-developer@lists.sourceforge.net
    Signed-off-by: James Morris

    David Howells
     

18 Oct, 2008

1 commit

15 May, 2008

2 commits

  • 887b3ece6   9p: fix error path during early mount ... Browse Code »

    There was some cleanup issues during early mount which would trigger
    a kernel bug for certain types of failure. This patch reorganizes the
    cleanup to get rid of the bad behavior.

    This also merges the 9pnet and 9pnet_fd modules for the purpose of
    configuration and initialization. Keeping the fd transport separate
    from the core 9pnet code seemed like a good idea at the time, but in
    practice has caused more harm and confusion than good.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     
  • 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
     

25 Apr, 2008

1 commit

06 Nov, 2007

1 commit

18 Oct, 2007

1 commit

  • a80d923e1   9p: Make transports dynamic ... Browse Code »

    This patch abstracts out the interfaces to underlying transports so that
    new transports can be added as modules. This should also allow kernel
    configuration of transports without ifdef-hell.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     

15 Jul, 2007

2 commits

  • 9e2f6688c   9p: re-enable mount time debug option ... Browse Code »

    During reorganization, the mount time debug option was removed in favor
    of module-load-time parameters. However, the mount time option is still
    a useful for feature during debug and for user-fault isolation when the
    module is compiled into the kernel.

    Signed-off-by: Eric Van Hensbergen

    Eric Van Hensbergen
     
  • 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

13 Feb, 2007

1 commit

01 Jul, 2006

1 commit

25 Jun, 2006

1 commit

23 Jun, 2006

1 commit

  • 454e2398b   [PATCH] VFS: Permit filesystem to override root dentry on mount ... Browse Code »

    Extend the get_sb() filesystem operation to take an extra argument that
    permits the VFS to pass in the target vfsmount that defines the mountpoint.

    The filesystem is then required to manually set the superblock and root dentry
    pointers. For most filesystems, this should be done with simple_set_mnt()
    which will set the superblock pointer and then set the root dentry to the
    superblock's s_root (as per the old default behaviour).

    The get_sb() op now returns an integer as there's now no need to return the
    superblock pointer.

    This patch permits a superblock to be implicitly shared amongst several mount
    points, such as can be done with NFS to avoid potential inode aliasing. In
    such a case, simple_set_mnt() would not be called, and instead the mnt_root
    and mnt_sb would be set directly.

    The patch also makes the following changes:

    (*) the get_sb_*() convenience functions in the core kernel now take a vfsmount
    pointer argument and return an integer, so most filesystems have to change
    very little.

    (*) If one of the convenience function is not used, then get_sb() should
    normally call simple_set_mnt() to instantiate the vfsmount. This will
    always return 0, and so can be tail-called from get_sb().

    (*) generic_shutdown_super() now calls shrink_dcache_sb() to clean up the
    dcache upon superblock destruction rather than shrink_dcache_anon().

    This is required because the superblock may now have multiple trees that
    aren't actually bound to s_root, but that still need to be cleaned up. The
    currently called functions assume that the whole tree is rooted at s_root,
    and that anonymous dentries are not the roots of trees which results in
    dentries being left unculled.

    However, with the way NFS superblock sharing are currently set to be
    implemented, these assumptions are violated: the root of the filesystem is
    simply a dummy dentry and inode (the real inode for '/' may well be
    inaccessible), and all the vfsmounts are rooted on anonymous[*] dentries
    with child trees.

    [*] Anonymous until discovered from another tree.

    (*) The documentation has been adjusted, including the additional bit of
    changing ext2_* into foo_* in the documentation.

    [akpm@osdl.org: convert ipath_fs, do other stuff]
    Signed-off-by: David Howells
    Acked-by: Al Viro
    Cc: Nathan Scott
    Cc: Roland Dreier
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Howells
     

09 Jun, 2006

1 commit

11 Apr, 2006

1 commit