• Aneesh Kumar K.V's avatar
    powerpc/mm/hugetlb: Update hugetlb related locks · ed515b68
    Aneesh Kumar K.V authored
    With split pmd page table lock enabled, we don't use mm->page_table_lock when
    updating pmd entries. This patch update hugetlb path to use the right lock
    when inserting huge page directory entries into page table.
    
    ex: if we are using hugepd and inserting hugepd entry at the pmd level, we
    use pmd_lockptr, which based on config can be split pmd lock.
    
    For update huge page directory entries itself we use mm->page_table_lock. We
    do have a helper huge_pte_lockptr() for that.
    
    Fixes: 675d9952 ("powerpc/book3s64: Enable split pmd ptlock")
    Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    ed515b68
pgtable.c 8.18 KB