]> www.infradead.org Git - users/jedix/linux-maple.git/commit
mm: thp: kill __transhuge_page_enabled()
authorYang Shi <shy828301@gmail.com>
Thu, 16 Jun 2022 17:48:38 +0000 (10:48 -0700)
committerLiam R. Howlett <Liam.Howlett@oracle.com>
Wed, 20 Jul 2022 00:15:07 +0000 (20:15 -0400)
commitb36efee9e97e96860d0f7ef17ca77529c8217054
tree026cf9403698055e9c9820bfebfe5e910a92623a
parent772ea84719d6766db94ae562a0626c150968b039
mm: thp: kill __transhuge_page_enabled()

The page fault path checks THP eligibility with __transhuge_page_enabled()
which does the similar thing as hugepage_vma_check(), so use
hugepage_vma_check() instead.

However page fault allows DAX and !anon_vma cases, so added a new flag,
in_pf, to hugepage_vma_check() to make page fault work correctly.

The in_pf flag is also used to skip shmem and file THP for page fault
since shmem handles THP in its own shmem_fault() and file THP allocation
on fault is not supported yet.

Also remove hugepage_vma_enabled() since hugepage_vma_check() is the only
caller now, it is not necessary to have a helper function.

Link: https://lkml.kernel.org/r/20220616174840.1202070-6-shy828301@gmail.com
Signed-off-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Zach O'Keefe <zokeefe@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fs/proc/task_mmu.c
include/linux/huge_mm.h
mm/huge_memory.c
mm/khugepaged.c
mm/memory.c