Eric Lee / smarc-fsl-linux-kernel

23 Jun, 2009

2 commits

  • d246ab307   ocfs2/trivial: Wrap ocfs2_sysfile_cluster_lock_key within define. ... Browse Code »

    Actually ocfs2_sysfile_cluster_lock_key is only used if we enable
    CONFIG_DEBUG_LOCK_ALLOC. Wrap it so that we can avoid a building
    warning.
    fs/ocfs2/sysfile.c:53: warning: ‘ocfs2_sysfile_cluster_lock_key’
    defined but not used

    Signed-off-by: Tao Ma
    Signed-off-by: Joel Becker

    Tao Ma
     
  • cb25797d4   ocfs2: Add lockdep annotations ... Browse Code »

    Add lockdep support to OCFS2. The support also covers all of the cluster
    locks except for open locks, journal locks, and local quotafile locks. These
    are special because they are acquired for a node, not for a particular process
    and lockdep cannot deal with such type of locking.

    Signed-off-by: Jan Kara
    Signed-off-by: Joel Becker

    Jan Kara
     

26 Jan, 2008

1 commit

  • 5fa0613ea   ocfs2: Silence false lockdep warnings ... Browse Code »

    Create separate lockdep lock classes for system file's i_mutexes. They are
    used to guard allocations and similar things and thus rank differently
    than i_mutex of a regular file or directory.

    Signed-off-by: Jan Kara
    Signed-off-by: Mark Fasheh

    Jan Kara
     

13 Oct, 2007

1 commit

  • be94d1170   ocfs2: Provide convenience function for ino lookup ... Browse Code »

    A couple paths which needed to just match a parent dir + name pair to an
    inode number were a bit messy because they had to deal with
    ocfs2_find_files_on_disk() which returns a larger number of values. Provide
    a convenience function, ocfs2_lookup_ino_from_name() which internalizes all
    the extra accounting.

    Signed-off-by: Mark Fasheh
    Reviewed-by: Joel Becker

    Mark Fasheh
     

25 Sep, 2006

2 commits

  • 24c19ef40   ocfs2: Remove i_generation from inode lock names ... Browse Code »

    OCFS2 puts inode meta data in the "lock value block" provided by the DLM.
    Typically, i_generation is encoded in the lock name so that a deleted inode
    on and a new one in the same block don't share the same lvb.

    Unfortunately, that scheme means that the read in ocfs2_read_locked_inode()
    is potentially thrown away as soon as the meta data lock is taken - we
    cannot encode the lock name without first knowing i_generation, which
    requires a disk read.

    This patch encodes i_generation in the inode meta data lvb, and removes the
    value from the inode meta data lock name. This way, the read can be covered
    by a lock, and at the same time we can distinguish between an up to date and
    a stale LVB.

    This will help cold-cache stat(2) performance in particular.

    Since this patch changes the protocol version, we take the opportunity to do
    a minor re-organization of two of the LVB fields.

    Signed-off-by: Mark Fasheh

    Mark Fasheh
     
  • 80c05846f   ocfs2: Add dentry tracking API ... Browse Code »

    Replace the dentry vote mechanism with a cluster lock which covers a set
    of dentries. This allows us to force d_delete() only on nodes which actually
    care about an unlink.

    Every node that does a ->lookup() gets a read only lock on the dentry, until
    an unlink during which the unlinking node, will request an exclusive lock,
    forcing the other nodes who care about that dentry to d_delete() it. The
    effect is that we retain a very lightweight ->d_revalidate(), and at the
    same time get to make large improvements to the average case performance of
    the ocfs2 unlink and rename operations.

    This patch adds the higher level API and the dentry manipulation code.

    Signed-off-by: Mark Fasheh

    Mark Fasheh
     

04 Feb, 2006

1 commit

04 Jan, 2006

1 commit