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H A D | mremap.c | diff 7d846db7d0e23139d1894e198fcd74dc7d5871ba Thu Jul 08 03:10:06 CEST 2021 Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> mm/mremap: convert huge PUD move to separate helper
With TRANSPARENT_HUGEPAGE_PUD enabled the kernel can find huge PUD entries. Add a helper to move huge PUD entries on mremap().
This will be used by a later patch to optimize mremap of PUD_SIZE aligned level 4 PTE mapped address
This also make sure we support mremap on huge PUD entries even with CONFIG_HAVE_MOVE_PUD disabled.
[aneesh.kumar@linux.ibm.com: fix build failure with clang-10] Link: https://lore.kernel.org/lkml/YMuOSnJsL9qkxweY@archlinux-ax161 Link: https://lkml.kernel.org/r/20210619134310.89098-1-aneesh.kumar@linux.ibm.com
Link: https://lkml.kernel.org/r/20210616045239.370802-4-aneesh.kumar@linux.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Hugh Dickins <hughd@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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