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Mel Gorman 2b4847e730 mm: numa: serialise parallel get_user_page against THP migration ... Base pages are unmapped and flushed from cache and TLB during normal page migration and replaced with a migration entry that causes any parallel NUMA hinting fault or gup to block until migration completes. THP does not unmap pages due to a lack of support for migration entries at a PMD level. This allows races with get_user_pages and get_user_pages_fast which commit 3f926ab945 ("mm: Close races between THP migration and PMD numa clearing") made worse by introducing a pmd_clear_flush(). This patch forces get_user_page (fast and normal) on a pmd_numa page to go through the slow get_user_page path where it will serialise against THP migration and properly account for the NUMA hinting fault. On the migration side the page table lock is taken for each PTE update. Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Alex Thorlton <athorlton@sgi.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		11 years ago
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kmemcheck	…
Makefile	x86, trace: Add page fault tracepoints	11 years ago
amdtopology.c	x86/mm/numa: Simplify some bit mangling	12 years ago
dump_pagetables.c	…
extable.c	x86, extable: Switch to relative exception table entries	13 years ago
fault.c	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	11 years ago
gup.c	mm: numa: serialise parallel get_user_page against THP migration	11 years ago
highmem_32.c	mm: accurately calculate zone->managed_pages for highmem zones	12 years ago
hugetlbpage.c	mm: migrate: check movability of hugepage in unmap_and_move_huge_page()	12 years ago
init.c	arch/x86/mm/init.c: fix incorrect function name in alloc_low_pages()	11 years ago
init_32.c	mm/x86: prepare for removing num_physpages and simplify mem_init()	12 years ago
init_64.c	mm/x86: prepare for removing num_physpages and simplify mem_init()	12 years ago
iomap_32.c	…
ioremap.c	mm: Remove unused variable idx0 in __early_ioremap()	12 years ago
kmmio.c	…
memtest.c	x86/memtest: Shorten time for tests	12 years ago
mm_internal.h	x86, mm: Move after_bootmem to mm_internel.h	12 years ago
mmap.c	x86 get_unmapped_area: Access mmap_legacy_base through mm_struct member	12 years ago
mmio-mod.c	x86: delete __cpuinit usage from all x86 files	12 years ago
numa.c	mem-hotplug: introduce movable_node boot option	11 years ago
numa_32.c	mm/x86: prepare for removing num_physpages and simplify mem_init()	12 years ago
numa_64.c	x86, mm: kill numa_free_all_bootmem()	12 years ago
numa_emulation.c	x86: delete __cpuinit usage from all x86 files	12 years ago
numa_internal.h	x86-32, mm: Rip out x86_32 NUMA remapping code	12 years ago
pageattr-test.c	x86: rename random32() to prandom_u32()	12 years ago
pageattr.c	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	12 years ago
pat.c	x86: Do not try to sync identity map for non-mapped pages	12 years ago
pat_internal.h	…
pat_rbtree.c	rbtree: move augmented rbtree functionality to rbtree_augmented.h	13 years ago
pf_in.c	…
pf_in.h	…
pgtable.c	x86, mm: do not leak page->ptl for pmd page tables	11 years ago
pgtable_32.c	Disintegrate asm/system.h for X86	13 years ago
physaddr.c	x86, mm: Make DEBUG_VIRTUAL work earlier in boot	12 years ago
physaddr.h	…
setup_nx.c	x86: delete __cpuinit usage from all x86 files	12 years ago
srat.c	ACPI / x86: Print Hot-Pluggable Field in SRAT.	12 years ago
testmmiotrace.c	…
tlb.c	mm: vmstats: track TLB flush stats on UP too	12 years ago