5e545df329
ARM is the only architecture that defines CONFIG_ARCH_HAS_HOLES_MEMORYMODEL which in turn enables memmap_valid_within() function that is intended to verify existence of struct page associated with a pfn when there are holes in the memory map. However, the ARCH_HAS_HOLES_MEMORYMODEL also enables HAVE_ARCH_PFN_VALID and arch-specific pfn_valid() implementation that also deals with the holes in the memory map. The only two users of memmap_valid_within() call this function after a call to pfn_valid() so the memmap_valid_within() check becomes redundant. Remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL and memmap_valid_within() and rely entirely on ARM's implementation of pfn_valid() that is now enabled unconditionally. Link: https://lkml.kernel.org/r/20201101170454.9567-9-rppt@kernel.org Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greg Ungerer <gerg@linux-m68k.org> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matt Turner <mattst88@gmail.com> Cc: Meelis Roos <mroos@linux.ee> Cc: Michael Schmitz <schmitzmic@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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.. | ||
.gitignore | ||
active_mm.rst | ||
arch_pgtable_helpers.rst | ||
balance.rst | ||
cleancache.rst | ||
free_page_reporting.rst | ||
frontswap.rst | ||
highmem.rst | ||
hmm.rst | ||
hugetlbfs_reserv.rst | ||
hwpoison.rst | ||
index.rst | ||
ksm.rst | ||
memory-model.rst | ||
mmu_notifier.rst | ||
numa.rst | ||
overcommit-accounting.rst | ||
page_frags.rst | ||
page_migration.rst | ||
page_owner.rst | ||
remap_file_pages.rst | ||
slub.rst | ||
split_page_table_lock.rst | ||
swap_numa.rst | ||
transhuge.rst | ||
unevictable-lru.rst | ||
z3fold.rst | ||
zsmalloc.rst | ||
zswap.rst |