Fix the arm64 build error which was caused by commit ae07562909 ("mm:
change huge_ptep_clear_flush() to return the original pte") interacting
with commit fb396bb459 ("arm64/hugetlb: Drop TLB flush from
get_clear_flush()"):
arch/arm64/mm/hugetlbpage.c: In function ‘huge_ptep_clear_flush’:
arch/arm64/mm/hugetlbpage.c:515:9: error: implicit declaration of function ‘get_clear_flush’; did you mean ‘ptep_clear_flush’? [-Werror=implicit-function-declaration]
515 | return get_clear_flush(vma->vm_mm, addr, ptep, pgsize, ncontig);
| ^~~~~~~~~~~~~~~
| ptep_clear_flush
Due to the new get_clear_contig() has dropped TLB flush, we should add
an explicit TLB flush in huge_ptep_clear_flush() to keep original
semantics when changing to use new get_clear_contig().
Fixes: fb396bb459 ("arm64/hugetlb: Drop TLB flush from get_clear_flush()").
Fixes: ae07562909 ("mm: change huge_ptep_clear_flush() to return the original pte")
Reported-and-tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Reported-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Suggested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
e68b823ab0