Eric Lee / smarc-fsl-linux-kernel

19 Jul, 2007

1 commit

  • a6bb340da   debugfs: remove rmdir() non-empty complaint ... Browse Code »

    Hi,

    This patch kills the pointless debugfs rmdir() printk() when called on a
    non-empty directory. blktrace will sometimes have to call it a few times
    when forcefully ending a trace, which polutes the log with pointless
    warnings.

    Rationale:

    - It's more code to work-around this "problem" in the debugfs users, and
    you would have to add code to check for empty directories to do so (or
    assume that debugfs is using simple_ helpers, but that would be a
    layering violation).

    - Other rmdir() implementations don't complain about something this
    silly.

    Signed-off-by: Jens Axboe
    Signed-off-by: Greg Kroah-Hartman

    Jens Axboe
     

12 Jul, 2007

1 commit

03 May, 2007

1 commit

28 Apr, 2007

1 commit

  • 8447891fe   debugfs: Add debugfs_create_u64() ... Browse Code »

    I went to use this the other day, only to find it didn't exist.

    It's a straight copy of the debugfs u32 code, then s/u32/u64/. A quick
    test shows it seems to be working.

    Signed-off-by: Michael Ellerman
    Signed-off-by: Greg Kroah-Hartman

    Michael Ellerman
     

17 Feb, 2007

2 commits

  • 873760fbf   debugfs: Remove misleading comments. ... Browse Code »

    Just mention which error will be returned if debugfs is disabled. Callers
    should be able to figure out themselves what they need to check.

    Signed-off-by: Cornelia Huck
    Signed-off-by: Greg Kroah-Hartman

    Cornelia Huck
     
  • 66f549639   debugfs: implement symbolic links ... Browse Code »

    debugfs: implement symbolic links

    Implement a new function debugfs_create_symlink() which can be used
    to create symbolic links in debugfs. This function can be useful
    for people moving functionality from /proc to debugfs (e.g. the
    gcov-kernel patch).

    Signed-off-by: Peter Oberparleiter
    Signed-off-by: Greg Kroah-Hartman

    Peter Oberparleiter
     

13 Feb, 2007

1 commit

  • 00977a59b   [PATCH] mark struct file_operations const 6 ... Browse Code »

    Many struct file_operations in the kernel can be "const". Marking them const
    moves these to the .rodata section, which avoids false sharing with potential
    dirty data. In addition it'll catch accidental writes at compile time to
    these shared resources.

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     

14 Dec, 2006

5 commits

  • 29a7f3ada   DebugFS : file/directory removal fix ... Browse Code »

    Fix file and directory removal in debugfs. Add inotify support for file removal.

    The following scenario :
    create dir a
    create dir a/b

    cd a/b (some process goes in cwd a/b)

    rmdir a/b
    rmdir a

    fails due to the fact that "a" appears to be non empty. It is because
    the "b" dentry is not deleted from "a" and still in use. The same
    problem happens if "b" is a file. d_delete is nice enough to know when
    it needs to unhash and free the dentry if nothing else is using it or,
    if someone is using it, to remove it from the hash queues and wait for
    it to be deleted when it has no users.

    The nice side-effect of this fix is that it calls the file removal
    notification.

    Signed-off-by: Mathieu Desnoyers
    Signed-off-by: Greg Kroah-Hartman

    Mathieu Desnoyers
     
  • 65c333367   DebugFS : more file/directory creation error handling ... Browse Code »

    Correct dentry count to handle creation errors.

    This patch puts a dput at the file creation instead of the file removal :
    lookup_one_len already returns a dentry with reference count of 1. Then,
    the dget() in simple_mknod increments it when the dentry is associated
    with a file. In a scenario where simple_create or simple_mkdir returns
    an error, this would lead to an unwanted increment of the reference
    counter, therefore making file removal impossible.

    Signed-off-by: Mathieu Desnoyers
    Signed-off-by: Greg Kroah-Hartman

    Mathieu Desnoyers
     
  • 63223a065   DebugFS : file/directory creation error handling ... Browse Code »

    Fix error handling of file and directory creation in DebugFS.

    The error path should release the file system because no _remove will be called
    for this erroneous creation.

    Signed-off-by: Mathieu Desnoyers
    Signed-off-by: Greg Kroah-Hartman

    Mathieu Desnoyers
     
  • bafb232ec   DebugFS : coding style fixes ... Browse Code »

    Minor coding style fixes along the way : 80 cols and a white space.

    Signed-off-by: Mathieu Desnoyers
    Signed-off-by: Greg Kroah-Hartman

    Mathieu Desnoyers
     
  • 4f36557fb   DebugFS : inotify create/mkdir support ... Browse Code »

    Add inotify create and mkdir events to DebugFS.

    Signed-off-by: Mathieu Desnoyers
    Signed-off-by: Greg Kroah-Hartman

    Mathieu Desnoyers
     

26 Nov, 2006

1 commit

17 Nov, 2006

1 commit

04 Oct, 2006

1 commit

01 Oct, 2006

1 commit

27 Sep, 2006

2 commits

  • ba52de123   [PATCH] inode-diet: Eliminate i_blksize from the inode structure ... Browse Code »

    This eliminates the i_blksize field from struct inode. Filesystems that want
    to provide a per-inode st_blksize can do so by providing their own getattr
    routine instead of using the generic_fillattr() function.

    Note that some filesystems were providing pretty much random (and incorrect)
    values for i_blksize.

    [bunk@stusta.de: cleanup]
    [akpm@osdl.org: generic_fillattr() fix]
    Signed-off-by: "Theodore Ts'o"
    Signed-off-by: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Theodore Ts'o
     
  • 8e18e2941   [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_private ... Browse Code »

    The following patches reduce the size of the VFS inode structure by 28 bytes
    on a UP x86. (It would be more on an x86_64 system). This is a 10% reduction
    in the inode size on a UP kernel that is configured in a production mode
    (i.e., with no spinlock or other debugging functions enabled; if you want to
    save memory taken up by in-core inodes, the first thing you should do is
    disable the debugging options; they are responsible for a huge amount of bloat
    in the VFS inode structure).

    This patch:

    The filesystem or device-specific pointer in the inode is inside a union,
    which is pretty pointless given that all 30+ users of this field have been
    using the void pointer. Get rid of the union and rename it to i_private, with
    a comment to explain who is allowed to use the void pointer. This is just a
    cleanup, but it allows us to reuse the union 'u' for something something where
    the union will actually be used.

    [judith@osdl.org: powerpc build fix]
    Signed-off-by: "Theodore Ts'o"
    Signed-off-by: Judith Lebzelter
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Theodore Ts'o
     

26 Sep, 2006

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

2 commits

29 Mar, 2006

2 commits

  • 4b6f5d20b   [PATCH] Make most file operations structs in fs/ const ... Browse Code »

    This is a conversion to make the various file_operations structs in fs/
    const. Basically a regexp job, with a few manual fixups

    The goal is both to increase correctness (harder to accidentally write to
    shared datastructures) and reducing the false sharing of cachelines with
    things that get dirty in .data (while .rodata is nicely read only and thus
    cache clean)

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     
  • 99ac48f54   [PATCH] mark f_ops const in the inode ... Browse Code »

    Mark the f_ops members of inodes as const, as well as fix the
    ripple-through this causes by places that copy this f_ops and then "do
    stuff" with it.

    Signed-off-by: Arjan van de Ven
    Signed-off-by: Alexey Dobriyan
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     

21 Mar, 2006

1 commit

07 Feb, 2006

1 commit

10 Jan, 2006

1 commit

24 Jun, 2005

1 commit

  • 5f45f1a78   [PATCH] remove duplicate get_dentry functions in various places ... Browse Code »

    Various filesystem drivers have grown a get_dentry() function that's a
    duplicate of lookup_one_len, except that it doesn't take a maximum length
    argument and doesn't check for \0 or / in the passed in filename.

    Switch all these places to use lookup_one_len.

    Signed-off-by: Christoph Hellwig
    Cc: Greg KH
    Cc: Paul Jackson
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Christoph Hellwig
     

21 Jun, 2005

1 commit

  • acaefc25d   [PATCH] libfs: add simple attribute files ... Browse Code »

    Based on the discussion about spufs attributes, this is my suggestion
    for a more generic attribute file support that can be used by both
    debugfs and spufs.

    Simple attribute files behave similarly to sequential files from
    a kernel programmers perspective in that a standard set of file
    operations is provided and only an open operation needs to
    be written that registers file specific get() and set() functions.

    These operations are defined as

    void foo_set(void *data, u64 val); and
    u64 foo_get(void *data);

    where data is the inode->u.generic_ip pointer of the file and the
    operations just need to make send of that pointer. The infrastructure
    makes sure this works correctly with concurrent access and partial
    read calls.

    A macro named DEFINE_SIMPLE_ATTRIBUTE is provided to further simplify
    using the attributes.

    This patch already contains the changes for debugfs to use attributes
    for its internal file operations.

    Signed-off-by: Arnd Bergmann
    Signed-off-by: Greg Kroah-Hartman

    Arnd Bergmann
     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds