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[0/2] mseal: Fix is_madv_discard()

Message ID 20240807173336.2523757-1-pedro.falcato@gmail.com
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Series mseal: Fix is_madv_discard() | expand

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Pedro Falcato Aug. 7, 2024, 5:33 p.m. UTC 
This small series fixes is_madv_discard() and adds a small sanity check
test to selftests/mm/mseal_test. Without this patch, is_madv_discard()
erroneously thinks innocent ops like MADV_RANDOM are discard operations
(which they are not, and are supposed to be allowed, per the overall
design).

Based on Linus's tree and taken from my mseal depessimization series[1].
[1]: https://lore.kernel.org/all/20240806212808.1885309-1-pedro.falcato@gmail.com/

Pedro Falcato (2):
  mseal: Fix is_madv_discard()
  selftests/mm: Add mseal test for no-discard madvise

 mm/mseal.c                              | 14 +++++++---
 tools/testing/selftests/mm/mseal_test.c | 34 +++++++++++++++++++++++++
 2 files changed, 45 insertions(+), 3 deletions(-)