This patch series enables support of i2c bus for Intel Alder Lake PCH-P and PCH-M
on kernel version 5.10. These patches add ID's of Alder lake platform in these
drivers: i801, intel-lpss, pinctrl. ID's were taken from linux kernel version 5.15.
Alexander Ofitserov (3):
i2c: i801: Add support for Intel Alder Lake PCH
mfd: intel-lpss: Add Alder Lake's PCI devices IDs
pinctrl: tigerlake: Add Alder Lake-P ACPI ID
drivers/i2c/busses/i2c-i801.c | 8 +++++
drivers/mfd/intel-lpss-pci.c | 41 +++++++++++++++++++++++
drivers/pinctrl/intel/pinctrl-tigerlake.c | 1 +
3 files changed, 50 insertions(+)
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2.33.8
In madvise_cold_or_pageout_pte_range() and madvise_free_pte_range(),
folio_mapcount() is used to check whether the folio is shared. But it's
not correct as folio_mapcount() returns total mapcount of large folio.
Use folio_estimated_sharers() here as the estimated number is enough.
This patchset will fix the cases:
User space application call madvise() with MADV_FREE, MADV_COLD and
MADV_PAGEOUT for specific address range. There are THP mapped to the
range. Without the patchset, the THP is skipped. With the patch, the
THP will be split and handled accordingly.
David reported the cow self test skip some cases because of
MADV_PAGEOUT skip THP:
https://lore.kernel.org/linux-mm/9e92e42d-488f-47db-ac9d-75b24cd0d037@intel…
and I confirmed this patchset make it work again.
Changelog from v1:
- Avoid two Fixes tags make backport harder. Thank Andrew for pointing
this out.
- Add note section to mention this is a temporary fix which is fine
to reduce user-visble effects. For long term fix, we should wait for
David's solution. Thank Ryan and David for pointing this out.
- Spell user-visible effects out. Then people could decide whether
these patches are necessary for stable branch. Thank Andrew for
pointing this out.
V1:
https://lore.kernel.org/linux-mm/9e92e42d-488f-47db-ac9d-75b24cd0d037@intel…
Yin Fengwei (3):
madvise:madvise_cold_or_pageout_pte_range(): don't use mapcount()
against large folio for sharing check
madvise:madvise_free_huge_pmd(): don't use mapcount() against large
folio for sharing check
madvise:madvise_free_pte_range(): don't use mapcount() against large
folio for sharing check
mm/huge_memory.c | 2 +-
mm/madvise.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
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2.39.2