This patch-set fixes issues found in the pfn tracking code of PAT when mremap() is used on a VM_PFNMAP range.
Patch 1/2 changes untrack_pfn() to handle the case of mremap() with MREMAP_FIXED, i.e. remapping virtual address on a VM_PFNMAP range. Patch 2/2 changes the free_memtype() path to handle the case of mremap() that shrinks the size of a VM_PFNMAP range. Note, mremap() to expand the size of a VM_PFNMAP range is not a valid case as VM_DONTEXPAND is set along with VM_PFNMAP. --- Toshi Kani (2): 1/2 x86/mm/pat: Change untrack_pfn() to handle unmapped vma 2/2 x86/mm/pat: Change free_memtype() to free shrinking range --- arch/x86/mm/pat.c | 19 ++++++++++++------- arch/x86/mm/pat_rbtree.c | 46 +++++++++++++++++++++++++++++++++++++--------- 2 files changed, 49 insertions(+), 16 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
