From: Mike Rapoport rppt@linux.ibm.com
Hi,
This is an updated version of page_is_secretmem() changes. This is based on v5.12-rc7-mmots-2021-04-15-16-28.
@Andrew, please let me know if you'd like me to rebase it differently or resend the entire set.
v3: * add missing put_compound_head() if we are to return NULL from gup_page_range(), thanks David. * add unlikely() to test for page_is_secretmem.
v2: * move the check for secretmem page in gup_pte_range after we get a reference to the page, per Matthew.
Mike Rapoport (2): secretmem/gup: don't check if page is secretmem without reference secretmem: optimize page_is_secretmem()
include/linux/secretmem.h | 26 +++++++++++++++++++++++++- mm/gup.c | 6 +++--- mm/secretmem.c | 12 +----------- 3 files changed, 29 insertions(+), 15 deletions(-)