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| author | Hugh Dickins | 2011-01-14 00:46:52 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2011-01-14 02:32:42 +0100 |
| commit | 8a07651ee8cdaa9e27cb4ae372aed347533770f5 (patch) | |
| tree | 07a442e66c3f608e174edd3b8a2fd154f4219380 /mm/huge_memory.c | |
| parent | thp: transparent hugepage core (diff) | |
| download | kernel-qcow2-linux-8a07651ee8cdaa9e27cb4ae372aed347533770f5.tar.gz kernel-qcow2-linux-8a07651ee8cdaa9e27cb4ae372aed347533770f5.tar.xz kernel-qcow2-linux-8a07651ee8cdaa9e27cb4ae372aed347533770f5.zip | |
thp: transparent hugepage core fixlet
If you configure THP in addition to HUGETLB_PAGE on x86_32 without PAE,
the p?d-folding works out that munlock_vma_pages_range() can crash to
follow_page()'s pud_huge() BUG_ON(flags & FOLL_GET): it needs the same
VM_HUGETLB check already there on the pmd_huge() line. Conveniently,
openSUSE provides a "blogd" which tests this out at startup!
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/huge_memory.c')
0 files changed, 0 insertions, 0 deletions