tree 35f20c565e3d6797ed9638e688e4e911251da011
parent 51e5ef1bb7ab0e5fa7de4e802da5ab22fe35f0bf
author David S. Miller <davem@davemloft.net> 1398446472 -0700
committer David S. Miller <davem@davemloft.net> 1399181557 -0700

sparc64: Fix bugs in get_user_pages_fast() wrt. THP.

The large PMD path needs to check _PAGE_VALID not _PAGE_PRESENT, to
decide if it needs to bail and return 0.

pmd_large() should therefore just check _PAGE_PMD_HUGE.

Calls to gup_huge_pmd() are guarded with a check of pmd_large(), so we
just need to add a valid bit check.

Signed-off-by: David S. Miller <davem@davemloft.net>