• Lee Schermerhorn's avatar
    mempolicy: rename mpol_free to mpol_put · f0be3d32
    Lee Schermerhorn authored
    This is a change that was requested some time ago by Mel Gorman.  Makes sense
    to me, so here it is.
    Note: I retain the name "mpol_free_shared_policy()" because it actually does
    free the shared_policy, which is NOT a reference counted object.  However, ...
    The mempolicy object[s] referenced by the shared_policy are reference counted,
    so mpol_put() is used to release the reference held by the shared_policy.  The
    mempolicy might not be freed at this time, because some task attached to the
    shared object associated with the shared policy may be in the process of
    allocating a page based on the mempolicy.  In that case, the task performing
    the allocation will hold a reference on the mempolicy, obtained via
    mpol_shared_policy_lookup().  The mempolicy will be freed when all tasks
    holding such a reference have called mpol_put() for the mempolicy.
    Signed-off-by: default avatarLee Schermerhorn <lee.schermerhorn@hp.com>
    Cc: Christoph Lameter <clameter@sgi.com>
    Cc: David Rientjes <rientjes@google.com>
    Cc: Mel Gorman <mel@csn.ul.ie>
    Cc: Andi Kleen <ak@suse.de>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>