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authorAdam Litke <agl@us.ibm.com>2008-11-12 13:24:56 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-12 17:17:16 -0800
commit7526674de0c921e7f1e9b6f71a1f9d832557b554 (patch)
tree9b40d13ecd775197b74fcb396d6aba7ce5ea589e /drivers
parentb5f1f5557fd83fe92bdf2d2e80e431d655464d6c (diff)
hugetlb: make unmap_ref_private multi-size-aware
Oops. Part of the hugetlb private reservation code was not fully converted to use hstates. When a huge page must be unmapped from VMAs due to a failed COW, HPAGE_SIZE is used in the call to unmap_hugepage_range() regardless of the page size being used. This works if the VMA is using the default huge page size. Otherwise we might unmap too much, too little, or trigger a BUG_ON. Rare but serious -- fix it. Signed-off-by: Adam Litke <agl@us.ibm.com> Cc: Jon Tollefson <kniht@linux.vnet.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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