I did some experimenting with converting the DAX radix tree from storing
sector numbers to storing pfn_t. While we're not ready to do that
conversion yet, these pieces make sense to at least get reviewed now,
and maybe get upstream.
I think the first patch is worthwhile all by itself as a stepping stone to
making SG lists contain PFNs instead of pages.
Matthew Wilcox (3):
pfn_t: Change the encoding
pfn_t: Support for huge PFNs
pfn_t: New functions pfn_t_add and pfn_t_cmp
include/linux/pfn_t.h | 72 +++++++++++++++++++++++++++++++++++++++++++--------
1 file changed, 61 insertions(+), 11 deletions(-)