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[v1,0/3] mm/secretmem: one fix and one refactoring

Message ID 20240325134114.257544-1-david@redhat.com (mailing list archive)
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Series mm/secretmem: one fix and one refactoring | expand

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David Hildenbrand March 25, 2024, 1:41 p.m. UTC 
Patch #1 fixes a GUP-fast issue, whereby we might succeed in pinning
secretmem folios. Patch #2 extends the memfd_secret selftest to cover
that case. Patch #3 removes folio_is_secretmem() and instead lets
folio_fast_pin_allowed() cover that case as well.

With this series, the reproducer (+selftests) works as expected. To
test patch #3, the gup_longterm test does exactly what we need, and
keeps on working as expected.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Miklos Szeredi <mszeredi@redhat.com>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: xingwei lee <xrivendell7@gmail.com>
Cc: yue sun <samsun1006219@gmail.com>

David Hildenbrand (3):
  mm/secretmem: fix GUP-fast succeeding on secretmem folios
  selftests/memfd_secret: add vmsplice() test
  mm: merge folio_is_secretmem() into folio_fast_pin_allowed()

 include/linux/secretmem.h                 | 21 ++---------
 mm/gup.c                                  | 33 ++++++++++-------
 tools/testing/selftests/mm/memfd_secret.c | 44 +++++++++++++++++++++--
 3 files changed, 65 insertions(+), 33 deletions(-)