Eric Lee / smarc-fsl-linux-kernel

03 Oct, 2012

3 commits

  • 8c0a85377   fs: push rcu_barrier() from deactivate_locked_super() to filesystems ... Browse Code »

    There's no reason to call rcu_barrier() on every
    deactivate_locked_super(). We only need to make sure that all delayed rcu
    free inodes are flushed before we destroy related cache.

    Removing rcu_barrier() from deactivate_locked_super() affects some fast
    paths. E.g. on my machine exit_group() of a last process in IPC
    namespace takes 0.07538s. rcu_barrier() takes 0.05188s of that time.

    Signed-off-by: Kirill A. Shutemov
    Cc: Al Viro
    Signed-off-by: Andrew Morton
    Signed-off-by: Al Viro

    Kirill A. Shutemov
     
  • 99621b44a   btrfs: reada_extent doesn't need kref for refcount ... Browse Code »

    All increments and decrements are under the same spinlock - have to be,
    since they need to protect the radix_tree it's found in. Just use
    int, no need to wank with kref...

    Signed-off-by: Al Viro

    Al Viro
     
  • 10c28d937   coredump: move core dump functionality into its own file ... Browse Code »

    This prepares for making core dump functionality optional.

    The variable "suid_dumpable" and associated functions are left in fs/exec.c
    because they're used elsewhere, such as in ptrace.

    Signed-off-by: Alex Kelly
    Reviewed-by: Josh Triplett
    Acked-by: Serge Hallyn
    Acked-by: Kees Cook
    Signed-off-by: Andrew Morton
    Signed-off-by: Al Viro

    Alex Kelly
     

27 Sep, 2012

37 commits