• Gavin Shan's avatar
    mm/memblock: cleanup on duplicate VA/PA conversion · 4e2f0775
    Gavin Shan authored
    The overall memblock has been organized into the memory regions and
    reserved regions.  Initially, the memory regions and reserved regions are
    stored in the predetermined arrays of "struct memblock _region".  It's
    possible for the arrays to be enlarged when we have newly added regions
    for them, but no enough space there.  Under the situation, We will created
    double-sized array to meet the requirement.  However, the original
    implementation converted the VA (Virtual Address) of the newly allocated
    array of regions to PA (Physical Address), then translate back when we
    allocates the new array from slab.  That's actually unnecessary.
    The patch removes the duplicate VA/PA conversion.
    Signed-off-by: default avatarGavin Shan <shangw@linux.vnet.ibm.com>
    Cc: Johannes Weiner <hannes@cmpxchg.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>