1. 25 9月, 2006 3 次提交
    • M
      ocfs2: Encode i_generation in the meta data lvb · f9e2d82e
      Mark Fasheh 提交于
      When i_generation is removed from the lockname, this will help us determine
      whether a meta data lvb has information that is in sync with the local
      struct inode.
      Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>
      f9e2d82e
    • M
      ocfs2: Free up some space in the lvb · 4d3b83f7
      Mark Fasheh 提交于
      lvb_version doesn't need to be a whole 32 bits. Make it an 8 bit field to
      free up some space. This should be backwards compatible until we use one of
      the fields, in which case we'd bump the lvb version anyway.
      Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>
      4d3b83f7
    • M
      ocfs2: Add new cluster lock type · d680efe9
      Mark Fasheh 提交于
      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 cluster lock type which OCFS2 can attach to
      dentries.  A small number of fs/ocfs2/dcache.c functions are stubbed
      out so that this change can compile.
      Signed-off-by: NMark Fasheh <mark.fasheh@oracle.com>
      d680efe9
  2. 21 9月, 2006 1 次提交
  3. 04 1月, 2006 1 次提交