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    [PATCH] mm: ptd_alloc inline and out · 1bb3630e
    Hugh Dickins 提交于
    It seems odd to me that, whereas pud_alloc and pmd_alloc test inline, only
    calling out-of-line __pud_alloc __pmd_alloc if allocation needed,
    pte_alloc_map and pte_alloc_kernel are entirely out-of-line.  Though it does
    add a little to kernel size, change them to macros testing inline, calling
    __pte_alloc or __pte_alloc_kernel to allocate out-of-line.  Mark none of them
    as fastcalls, leave that to CONFIG_REGPARM or not.
    
    It also seems more natural for the out-of-line functions to leave the offset
    calculation and map to the inline, which has to do it anyway for the common
    case.  At least mremap move wants __pte_alloc without _map.
    
    Macros rather than inline functions, certainly to avoid the header file issues
    which arise from CONFIG_HIGHPTE needing kmap_types.h, but also in case any
    architectures I haven't built would have other such problems.
    Signed-off-by: NHugh Dickins <hugh@veritas.com>
    Signed-off-by: NAndrew Morton <akpm@osdl.org>
    Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
    1bb3630e
memory.c 59.1 KB