09 Sep, 2015
3 commits
-
This is the support code for DAX-enabled filesystems to allow them to
provide huge pages in response to faults.Signed-off-by: Matthew Wilcox
Cc: Hillf Danton
Cc: "Kirill A. Shutemov"
Cc: Theodore Ts'o
Cc: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a vma_is_dax() helper macro to test whether the VMA is DAX, and use it
in zap_huge_pmd() and __split_huge_page_pmd().[akpm@linux-foundation.org: fix build]
Signed-off-by: Matthew Wilcox
Cc: Hillf Danton
Cc: "Kirill A. Shutemov"
Cc: Theodore Ts'o
Cc: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In order to handle the !CONFIG_TRANSPARENT_HUGEPAGES case, we need to
return VM_FAULT_FALLBACK from the inlined dax_pmd_fault(), which is
defined in linux/mm.h. Given that we don't want to include
in , the easiest solution is to move the DAX-related
functions to a new header, . We could also have moved
VM_FAULT_* definitions to a new header, or a different header that isn't
quite such a boil-the-ocean header as , but this felt like
the best option.Signed-off-by: Matthew Wilcox
Cc: Hillf Danton
Cc: "Kirill A. Shutemov"
Cc: Theodore Ts'o
Cc: Jan Kara
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
