• Tejun Heo's avatar
    percpu: perform tlb flush after pcpu_map_pages() failure · 849f5169
    Tejun Heo authored
    If pcpu_map_pages() fails midway, it unmaps the already mapped pages.
    Currently, it doesn't flush tlb after the partial unmapping.  This may
    be okay in most cases as the established mapping hasn't been used at
    that point but it can go wrong and when it goes wrong it'd be
    extremely difficult to track down.
    
    Flush tlb after the partial unmapping.
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    Cc: stable@vger.kernel.org
    849f5169
percpu-vm.c 13.1 KB