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Will Deacon 5d3a551c28 mm: hugetlb: add arch hook for clearing page flags before entering pool ... The core page allocator ensures that page flags are zeroed when freeing pages via free_pages_check. A number of architectures (ARM, PPC, MIPS) rely on this property to treat new pages as dirty with respect to the data cache and perform the appropriate flushing before mapping the pages into userspace. This can lead to cache synchronisation problems when using hugepages, since the allocator keeps its own pool of pages above the usual page allocator and does not reset the page flags when freeing a page into the pool. This patch adds a new architecture hook, arch_clear_hugepage_flags, so that architectures which rely on the page flags being in a particular state for fresh allocations can adjust the flags accordingly when a page is freed into the pool. Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Michal Hocko <mhocko@suse.cz> Reviewed-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		12 years ago
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boot	…
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crypto	…
include	mm: hugetlb: add arch hook for clearing page flags before entering pool	12 years ago
kernel	mm: kill vma flag VM_RESERVED and mm->reserved_vm counter	12 years ago
lib	…
math-emu	…
mm	…
net	…
oprofile	…
prom	…
Kbuild	…
Kconfig	Kconfig: clean up the "#if defined(arch)" list for exception-trace sysctl entry	12 years ago
Kconfig.debug	…
Makefile	…