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    mm/hugetlb: reduce arch dependent code about huge_pmd_unshare · e81f2d22
    Zhang Zhen 提交于
    Currently we have many duplicates in definitions of huge_pmd_unshare.  In
    all architectures this function just returns 0 when
    CONFIG_ARCH_WANT_HUGE_PMD_SHARE is N.
    
    This patch puts the default implementation in mm/hugetlb.c and lets these
    architectures use the common code.
    Signed-off-by: NZhang Zhen <zhenzhang.zhang@huawei.com>
    Cc: Russell King <linux@arm.linux.org.uk>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Tony Luck <tony.luck@intel.com>
    Cc: James Hogan <james.hogan@imgtec.com>
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
    Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
    Cc: Chris Metcalf <cmetcalf@ezchip.com>
    Cc: David Rientjes <rientjes@google.com>
    Cc: James Yang <James.Yang@freescale.com>
    Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
    Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
    e81f2d22
hugetlbpage.c 1.6 KB