Alexander Lobakin <aleksander.lobakin@xxxxxxxxx> writes: > Add the following netmem counterparts: > > * virt_to_netmem() -- simple page_to_netmem(virt_to_page()) wrapper; > * netmem_is_pfmemalloc() -- page_is_pfmemalloc() for page-backed > netmems, false otherwise; > > and the following "unsafe" versions: > > * __netmem_to_page() > * __netmem_get_pp() > * __netmem_address() > > They do the same as their non-underscored buddies, but assume the netmem > is always page-backed. When working with header &page_pools, you don't > need to check whether netmem belongs to the host memory and you can > never get NULL instead of &page. Checks for the LSB, clearing the LSB, > branches take cycles and increase object code size, sometimes > significantly. When you're sure your PP is always host, you can avoid > this by using the underscored counterparts. > > Signed-off-by: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx> Makes sense to have these as helpers, spelling out the constraints Reviewed-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx>
