Eric Lee / smarc-fsl-linux-kernel

11 Jan, 2012

1 commit

  • 609eac1c1   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:
    fs/9p: iattr_valid flags are kernel internal flags map them to 9p values.
    fs/9p: We should not allocate a new inode when creating hardlines.
    fs/9p: v9fs_stat2inode should update suid/sgid bits.
    9p: Reduce object size with CONFIG_NET_9P_DEBUG
    fs/9p: check schedule_timeout_interruptible return value

    Fix up trivial conflicts in fs/9p/{vfs_inode.c,vfs_inode_dotl.c} due to
    debug messages having changed to use p9_debug() on one hand, and the
    changes for umode_t on the other.

    Linus Torvalds
     

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
     

04 Jan, 2012

1 commit

06 Sep, 2011

1 commit

16 Apr, 2011

2 commits

23 Mar, 2011

1 commit

15 Mar, 2011

8 commits

13 Jan, 2011

1 commit

  • 98cd3fb0a   switch 9p ... Browse Code »

    here we actually *want* ->d_op for root; setting it allows to get rid
    of kludge in v9fs_kill_super() since now we have proper ->d_release()
    for root and don't need to call it manually.

    Signed-off-by: Al Viro

    Al Viro
     

29 Oct, 2010

1 commit

28 Oct, 2010

3 commits

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

1 commit