From: Matthew Wilcox <willy@xxxxxxxxxxxxxxx> Commit 1745cbc5d0 recently added vm_insert_pfn_prot(). Unfortunately, it doesn't actually work on x86 with PAT enabled (which is basically all machines, so I don't know if anyone actually tested it). Also, vm_insert_pfn_prot() continues with a couple of old-school traditions, of taking an unsigned long instead of a pfn_t, and returning an errno that then has to be translated in the fault handler. I was looking at adding a somewhat similar function for DAX, so this patchset includes changing DAX to use Andy's interface. I'd like to see at least the first two patches go into Ingo's tree. The third patch can find its way into the -mm tree later to stay with the other DAX patches. Matthew Wilcox (3): x86: Honour passed pgprot in track_pfn_insert() and track_pfn_remap() mm: Convert vm_insert_pfn_prot to vmf_insert_pfn_prot dax: Handle write faults more efficiently arch/x86/entry/vdso/vma.c | 6 ++-- arch/x86/mm/pat.c | 4 +-- fs/dax.c | 73 ++++++++++++++++++++++++++++++++++------------- include/linux/mm.h | 4 +-- mm/memory.c | 31 +++++++++++--------- 5 files changed, 78 insertions(+), 40 deletions(-) -- 2.7.0.rc3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>