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cec16052d5a774035fc6da19cb9d09106356bbef
kernel/include/linux/cacheflush.h

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Add linux/cacheflush.h 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: 08b0b0059bf1 ("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>
2021-11-06 17:13:35 -04:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_CACHEFLUSH_H
#define _LINUX_CACHEFLUSH_H
#include <asm/cacheflush.h>
#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 */
#endif /* _LINUX_CACHEFLUSH_H */
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