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Subject[PATCH v2 0/3] userfaultfd: convert userfaultfd functions to use folios
Date
From: ZhangPeng <zhangpeng362@huawei.com>

This patch series converts several userfaultfd functions to use folios.
And this series pass the userfaultfd selftests and the LTP userfaultfd
test cases.

Change log:

v1->v2:
In patch 2:
- Rename copy_large_folio_from_user() to copy_folio_from_user().
- Delete the inner_folio.
- kmap() and kmap_atomic() are converted to kmap_local_page(). Use
pagefault_disable() to ensure that a deadlock will not occur.
- flush_dcache_folio() is placed outside the loop.

ZhangPeng (3):
userfaultfd: convert mcopy_atomic_pte() to use a folio
userfaultfd: convert __mcopy_atomic_hugetlb() to use a folio
userfaultfd: convert __mcopy_atomic() to use a folio

include/linux/hugetlb.h | 4 +--
include/linux/mm.h | 3 +-
include/linux/shmem_fs.h | 2 +-
mm/hugetlb.c | 25 +++++++-------
mm/memory.c | 27 +++++++--------
mm/shmem.c | 17 +++++----
mm/userfaultfd.c | 74 +++++++++++++++++++---------------------
7 files changed, 72 insertions(+), 80 deletions(-)

--
2.25.1

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