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Many architectures do not include asm-generic/cacheflush.h, so turn the includes on their head and add linux/cacheflush.h which includes asm/cacheflush.h. Move the flush_dcache_folio() declaration from asm-generic/cacheflush.h to linux/cacheflush.h and change linux/highmem.h to include linux/cacheflush.h instead of asm/cacheflush.h so that all necessary places will see flush_dcache_folio(). More functions should have their default implementations moved in the future, but those are for follow-on patches. This fixes csky, sparc and sparc64 which were missed in the commit which added flush_dcache_folio(). Fixes: 08b0b00 ("mm: Add flush_dcache_folio()") Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
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Matthew Wilcox (Oracle)
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Nov 17, 2021
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,18 @@ | ||
/* SPDX-License-Identifier: GPL-2.0 */ | ||
#ifndef _LINUX_CACHEFLUSH_H | ||
#define _LINUX_CACHEFLUSH_H | ||
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#include <asm/cacheflush.h> | ||
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#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE | ||
#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO | ||
void flush_dcache_folio(struct folio *folio); | ||
#endif | ||
#else | ||
static inline void flush_dcache_folio(struct folio *folio) | ||
{ | ||
} | ||
#define ARCH_IMPLEMENTS_FLUSH_DCACHE_FOLIO 0 | ||
#endif /* ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE */ | ||
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#endif /* _LINUX_CACHEFLUSH_H */ |
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