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Some architectures would like to be triggered when a memory area is moved through the mremap system call. This patch introduces a new arch_remap() mm hook which is placed in the path of mremap, and is called before the old area is unmapped (and the arch_unmap() hook is called). Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
26 lines
679 B
C
26 lines
679 B
C
/*
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* Generic mm no-op hooks.
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*
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* Copyright (C) 2015, IBM Corporation
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* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef _LINUX_MM_ARCH_HOOKS_H
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#define _LINUX_MM_ARCH_HOOKS_H
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#include <asm/mm-arch-hooks.h>
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#ifndef arch_remap
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static inline void arch_remap(struct mm_struct *mm,
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unsigned long old_start, unsigned long old_end,
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unsigned long new_start, unsigned long new_end)
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{
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}
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#define arch_remap arch_remap
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#endif
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#endif /* _LINUX_MM_ARCH_HOOKS_H */
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