Eric Lee / smarc-fsl-linux-kernel

02 Nov, 2011

1 commit

25 Oct, 2011

4 commits

  • 348b59012   net/9p: Convert net/9p protocol dumps to tracepoints ... Browse Code »

    This helps in more control over debugging.
    root@qemu-img-64:~# ls /pass/123
    ls: cannot access /pass/123: No such file or directory
    root@qemu-img-64:~# cat /sys/kernel/debug/tracing/trace
    # tracer: nop
    #
    # TASK-PID CPU# TIMESTAMP FUNCTION
    # | | | | |
    ls-1536 [001] 70.928584: 9p_protocol_dump: clnt 18446612132784021504 P9_TWALK(tag = 1)
    000: 16 00 00 00 6e 01 00 01 00 00 00 02 00 00 00 01
    010: 00 03 00 31 32 33 00 00 00 ff ff ff ff 00 00 00

    ls-1536 [001] 70.928587:
    => trace_9p_protocol_dump
    => p9pdu_finalize
    => p9_client_rpc
    => p9_client_walk
    => v9fs_vfs_lookup
    => d_alloc_and_lookup
    => walk_component
    => path_lookupat
    ls-1536 [000] 70.929696: 9p_protocol_dump: clnt 18446612132784021504 P9_RLERROR(tag = 1)
    000: 0b 00 00 00 07 01 00 02 00 00 00 4e 03 00 02 00
    010: 00 00 00 00 03 00 02 00 00 00 00 00 ff 43 00 00

    ls-1536 [000] 70.929697:
    => trace_9p_protocol_dump
    => p9_client_rpc
    => p9_client_walk
    => v9fs_vfs_lookup
    => d_alloc_and_lookup
    => walk_component
    => path_lookupat
    => do_path_lookup

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

    Aneesh Kumar K.V
     
  • 4d5077f1b   fs/9p: Cleanup option parsing in 9p ... Browse Code »

    Instead of saying all integer argument option should be listed in the beginning
    move integer parsing to each option type.

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

    Aneesh Kumar K.V
     
  • 464f5ecf0   fs/9p: inode file operation is properly initialized init_special_inode ... Browse Code »

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

    Aneesh Kumar K.V
     
  • abfa034e4   fs/9p: Update zero-copy implementation in 9p ... Browse Code »

    * remove lot of update to different data structure
    * add a seperate callback for zero copy request.
    * above makes non zero copy code path simpler
    * remove conditionalizing TREAD/TREADDIR/TWRITE in the zero copy path
    * Fix the dotu p9_check_errors with zero copy. Add sufficient doc around
    * Add support for both in and output buffers in zero copy callback
    * pin and unpin pages in the same context
    * use helpers instead of defining page offset and rest of page ourself
    * Fix mem leak in p9_check_errors
    * Remove 'E' and 'F' in p9pdu_vwritef

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

    Aneesh Kumar K.V
     

06 Sep, 2011

5 commits

01 Aug, 2011

2 commits

26 Jul, 2011

7 commits

  • e08dc1325   p9: avoid unused variable warning ... Browse Code »

    Commit 4e34e719e457 ("fs: take the ACL checks to common code") removed
    the use of the 'acl' variable in v9fs_iop_get_acl(), but left the
    variable definition around. Remove it to get rid of the warning:

    fs/9p/acl.c: In function ‘v9fs_iop_get_acl’:
    fs/9p/acl.c:101:20: warning: unused variable ‘acl’

    Signed-off-by: Linus Torvalds

    Linus Torvalds
     
  • 0003230e8   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:
    fs: take the ACL checks to common code
    bury posix_acl_..._masq() variants
    kill boilerplates around posix_acl_create_masq()
    generic_acl: no need to clone acl just to push it to set_cached_acl()
    kill boilerplate around posix_acl_chmod_masq()
    reiserfs: cache negative ACLs for v1 stat format
    xfs: cache negative ACLs if there is no attribute fork
    9p: do no return 0 from ->check_acl without actually checking
    vfs: move ACL cache lookup into generic code
    CIFS: Fix oops while mounting with prefixpath
    xfs: Fix wrong return value of xfs_file_aio_write
    fix devtmpfs race
    caam: don't pass bogus S_IFCHR to debugfs_create_...()
    get rid of create_proc_entry() abuses - proc_mkdir() is there for purpose
    asus-wmi: ->is_visible() can't return negative
    fix jffs2 ACLs on big-endian with 16bit mode_t
    9p: close ACL leaks
    ocfs2_init_acl(): fix a leak
    VFS : mount lock scalability for internal mounts

    Linus Torvalds
     
  • 4e34e719e   fs: take the ACL checks to common code ... Browse Code »

    Replace the ->check_acl method with a ->get_acl method that simply reads an
    ACL from disk after having a cache miss. This means we can replace the ACL
    checking boilerplate code with a single implementation in namei.c.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Al Viro

    Christoph Hellwig
     
  • 826cae2f2   kill boilerplates around posix_acl_create_masq() ... Browse Code »

    new helper: posix_acl_create(&acl, gfp, mode_p). Replaces acl with
    modified clone, on failure releases acl and replaces with NULL.
    Returns 0 or -ve on error. All callers of posix_acl_create_masq()
    switched.

    Signed-off-by: Al Viro

    Al Viro
     
  • bc26ab5f6   kill boilerplate around posix_acl_chmod_masq() ... Browse Code »

    new helper: posix_acl_chmod(&acl, gfp, mode). Replaces acl with modified
    clone or with NULL if that has failed; returns 0 or -ve on error. All
    callers of posix_acl_chmod_masq() switched to that - they'd been doing
    exactly the same thing.

    Signed-off-by: Al Viro

    Al Viro
     
  • ebbb0ef28   9p: do no return 0 from ->check_acl without actually checking ... Browse Code »

    If we do not want to use ACLs we at least need to perform normal Unix
    permission checks. From the comment I'm not quite sure that's what
    is intended, but if 0p wants to do permission checks entirely on the
    server it needs to do so in ->permission, not in ->check_acl.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: Al Viro

    Christoph Hellwig
     
  • e77819e57   vfs: move ACL cache lookup into generic code ... Browse Code »

    This moves logic for checking the cached ACL values from low-level
    filesystems into generic code. The end result is a streamlined ACL
    check that doesn't need to load the inode->i_op->check_acl pointer at
    all for the common cached case.

    The filesystems also don't need to check for a non-blocking RCU walk
    case in their acl_check() functions, because that is all handled at a
    VFS layer.

    Signed-off-by: Linus Torvalds
    Signed-off-by: Al Viro

    Linus Torvalds
     

24 Jul, 2011

1 commit

23 Jul, 2011

6 commits

  • 48e370ff9   fs/9p: add 9P2000.L unlinkat operation ... Browse Code »

    unlinkat - Remove a directory entry

    size[4] Tunlinkat tag[2] dirfid[4] name[s] flag[4]
    size[4] Runlinkat tag[2]

    older Tremove have the below request format

    size[4] Tremove tag[2] fid[4]

    The remove message is used to remove a directory entry either file or directory
    The remove opreation is actually a directory opertation and should ideally have
    dirfid, if not we cannot represent the fid on server with anything other than
    name. We will have to derive the directory name from fid in the Tremove request.

    NOTE: The operation doesn't clunk the unlink fid.

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

    Aneesh Kumar K.V
     
  • 9e8fb38e7   fs/9p: add 9P2000.L renameat operation ... Browse Code »

    renameat - change name of file or directory

    size[4] Trenameat tag[2] olddirfid[4] oldname[s] newdirfid[4] newname[s]
    size[4] Rrenameat tag[2]

    older Trename have the below request format

    size[4] Trename tag[2] fid[4] newdirfid[4] name[s]

    The rename message is used to change the name of a file, possibly moving it
    to a new directory. The rename opreation is actually a directory opertation
    and should ideally have olddirfid, if not we cannot represent the fid on server
    with anything other than name. We will have to derive the old directory name
    from fid in the Trename request.

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

    Aneesh Kumar K.V
     
  • ed80fcfac   fs/9p: Always ask new inode in create ... Browse Code »
    1

    This make sure we don't end up reusing the unlinked inode object.
    The ideal way is to use inode i_generation. But i_generation is
    not available in userspace always.

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

    Aneesh Kumar K.V
     
  • a2dd43bb0   fs/9p: Fix invalid mount options/args ... Browse Code »
    1

    Without this fix, if any invalid mount options/args are passed while mouting
    the 9p fs, no error (-EINVAL) is returned and default arg value is assigned.

    This fix returns -EINVAL when an invalid arguement is found while parsing
    mount options.

    Signed-off-by: Prem Karat
    Signed-off-by: Aneesh Kumar K.V
    Signed-off-by: Eric Van Hensbergen

    Prem Karat
     
  • fd2421f54   fs/9p: When doing inode lookup compare qid details and inode mode bits. ... Browse Code »
    1

    This make sure we don't use wrong inode from the inode hash. The inode number
    of the file deleted is reused by the next file system object created
    and if we only use inode number for inode hash lookup we could end up
    with wrong struct inode.

    Also compare inode generation number. Not all Linux file system provide
    st_gen in userspace. So it could be 0;

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

    Aneesh Kumar K.V
     
  • 2053d67c5   fs/9p: remove rename work around in 9p ... Browse Code »

    Now that VFS does the right thing remove the work around.

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

    Aneesh Kumar K.V
     

21 Jul, 2011

1 commit

  • 02c24a821   fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers ... Browse Code »

    Btrfs needs to be able to control how filemap_write_and_wait_range() is called
    in fsync to make it less of a painful operation, so push down taking i_mutex and
    the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some
    file systems can drop taking the i_mutex altogether it seems, like ext3 and
    ocfs2. For correctness sake I just pushed everything down in all cases to make
    sure that we keep the current behavior the same for everybody, and then each
    individual fs maintainer can make up their mind about what to do from there.
    Thanks,

    Acked-by: Jan Kara
    Signed-off-by: Josef Bacik
    Signed-off-by: Al Viro

    Josef Bacik
     

20 Jul, 2011

4 commits

28 May, 2011

1 commit

27 May, 2011

1 commit

  • 32e51f141   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: (25 commits)
    cifs: remove unnecessary dentry_unhash on rmdir/rename_dir
    ocfs2: remove unnecessary dentry_unhash on rmdir/rename_dir
    exofs: remove unnecessary dentry_unhash on rmdir/rename_dir
    nfs: remove unnecessary dentry_unhash on rmdir/rename_dir
    ext2: remove unnecessary dentry_unhash on rmdir/rename_dir
    ext3: remove unnecessary dentry_unhash on rmdir/rename_dir
    ext4: remove unnecessary dentry_unhash on rmdir/rename_dir
    btrfs: remove unnecessary dentry_unhash in rmdir/rename_dir
    ceph: remove unnecessary dentry_unhash calls
    vfs: clean up vfs_rename_other
    vfs: clean up vfs_rename_dir
    vfs: clean up vfs_rmdir
    vfs: fix vfs_rename_dir for FS_RENAME_DOES_D_MOVE filesystems
    libfs: drop unneeded dentry_unhash
    vfs: update dentry_unhash() comment
    vfs: push dentry_unhash on rename_dir into file systems
    vfs: push dentry_unhash on rmdir into file systems
    vfs: remove dget() from dentry_unhash()
    vfs: dentry_unhash immediately prior to rmdir
    vfs: Block mmapped writes while the fs is frozen
    ...

    Linus Torvalds
     

26 May, 2011

2 commits

25 May, 2011

2 commits

16 Apr, 2011

3 commits