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Baoquan He
016fec9101
Now is_ioremap_addr() is only used in kernel/iomem.c and gonna be used in mm/ioremap.c. Move it into its own new header file linux/ioremap.h. Link: https://lkml.kernel.org/r/[email protected] Suggested-by: Christoph Hellwig <[email protected]> Signed-off-by: Baoquan He <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Cc: Alexander Gordeev <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Brian Cain <[email protected]> Cc: Catalin Marinas <[email protected]> Cc: Christian Borntraeger <[email protected]> Cc: Christophe Leroy <[email protected]> Cc: Chris Zankel <[email protected]> Cc: David Laight <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Gerald Schaefer <[email protected]> Cc: Heiko Carstens <[email protected]> Cc: Helge Deller <[email protected]> Cc: "James E.J. Bottomley" <[email protected]> Cc: John Paul Adrian Glaubitz <[email protected]> Cc: Jonas Bonn <[email protected]> Cc: Kefeng Wang <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Max Filippov <[email protected]> Cc: Michael Ellerman <[email protected]> Cc: Mike Rapoport (IBM) <[email protected]> Cc: Nathan Chancellor <[email protected]> Cc: Nicholas Piggin <[email protected]> Cc: Niklas Schnelle <[email protected]> Cc: Rich Felker <[email protected]> Cc: Stafford Horne <[email protected]> Cc: Stefan Kristiansson <[email protected]> Cc: Sven Schnelle <[email protected]> Cc: Vasily Gorbik <[email protected]> Cc: Vineet Gupta <[email protected]> Cc: Will Deacon <[email protected]> Cc: Yoshinori Sato <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
31 lines
719 B
C
31 lines
719 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_IOREMAP_H
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#define _LINUX_IOREMAP_H
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#include <linux/kasan.h>
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#include <asm/pgtable.h>
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#if defined(CONFIG_HAS_IOMEM) || defined(CONFIG_GENERIC_IOREMAP)
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/*
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* Ioremap often, but not always uses the generic vmalloc area. E.g on
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* Power ARCH, it could have different ioremap space.
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*/
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#ifndef IOREMAP_START
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#define IOREMAP_START VMALLOC_START
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#define IOREMAP_END VMALLOC_END
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#endif
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static inline bool is_ioremap_addr(const void *x)
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{
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unsigned long addr = (unsigned long)kasan_reset_tag(x);
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return addr >= IOREMAP_START && addr < IOREMAP_END;
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}
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#else
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static inline bool is_ioremap_addr(const void *x)
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{
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return false;
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}
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#endif
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#endif /* _LINUX_IOREMAP_H */
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