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Previously, we just allocated two shm areas: area_src and area_dst. With this commit, change this so we also allocate area_src_alias, and area_dst_alias. area_*_alias and area_* (respectively) point to the same underlying physical pages, but are different VMAs. In a future commit in this series, we'll leverage this setup to exercise minor fault handling support for shmem, just like we do in the hugetlb_shared test. Link: https://lkml.kernel.org/r/20210503180737.2487560-9-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Reviewed-by: Peter Xu <peterx@redhat.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Brian Geffon <bgeffon@google.com> Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jerome Glisse <jglisse@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Kirill A. Shutemov <kirill@shutemov.name> Cc: Lokesh Gidra <lokeshgidra@google.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Mina Almasry <almasrymina@google.com> Cc: Oliver Upton <oupton@google.com> Cc: Shaohua Li <shli@fb.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Wang Qing <wangqing@vivo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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.. | ||
.gitignore | ||
charge_reserved_hugetlb.sh | ||
check_config.sh | ||
compaction_test.c | ||
config | ||
gup_test.c | ||
hmm-tests.c | ||
hugepage-mmap.c | ||
hugepage-shm.c | ||
hugetlb_reparenting_test.sh | ||
khugepaged.c | ||
Makefile | ||
map_fixed_noreplace.c | ||
map_hugetlb.c | ||
map_populate.c | ||
mlock-random-test.c | ||
mlock2-tests.c | ||
mlock2.h | ||
mremap_dontunmap.c | ||
mremap_test.c | ||
on-fault-limit.c | ||
pkey-helpers.h | ||
pkey-powerpc.h | ||
pkey-x86.h | ||
protection_keys.c | ||
run_vmtests.sh | ||
split_huge_page_test.c | ||
test_hmm.sh | ||
test_vmalloc.sh | ||
thuge-gen.c | ||
transhuge-stress.c | ||
userfaultfd.c | ||
va_128TBswitch.c | ||
virtual_address_range.c | ||
write_hugetlb_memory.sh | ||
write_to_hugetlbfs.c |