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

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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>

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David S. Miller 2014-04-25 10:21:12 -07:00

parent 51e5ef1bb7

commit 04df419de3

2 changed files with 2 additions and 2 deletions

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2

arch/sparc/include/asm/pgtable_64.h

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2

arch/sparc/mm/gup.c

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