Having multiple externs in arch headers is not a good way to provide a common interface. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- arch/arm/include/asm/io.h | 3 --- arch/arm64/include/asm/io.h | 3 --- arch/x86/include/asm/io.h | 4 ---- include/xen/xen.h | 4 ++++ 4 files changed, 4 insertions(+), 10 deletions(-) diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index e58ca25eddb7..cf5cd88e7289 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -459,9 +459,6 @@ extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr); #include <asm-generic/io.h> -struct bio_vec; -extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, - const struct bio_vec *vec2); #define ARCH_BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ (!xen_domain() || xen_biovec_phys_mergeable(vec1, vec2)) diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index 774e03ea1bb0..06119ee511cd 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -205,9 +205,6 @@ extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size); extern int devmem_is_allowed(unsigned long pfn); -struct bio_vec; -extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, - const struct bio_vec *vec2); #define ARCH_BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ (!xen_domain() || xen_biovec_phys_mergeable(vec1, vec2)) diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 7c6106216d9c..abdb501a551d 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -371,10 +371,6 @@ extern bool is_early_ioremap_ptep(pte_t *ptep); #ifdef CONFIG_XEN #include <xen/xen.h> -struct bio_vec; - -extern bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, - const struct bio_vec *vec2); #define ARCH_BIOVEC_PHYS_MERGEABLE(vec1, vec2) \ (!xen_domain() || xen_biovec_phys_mergeable(vec1, vec2)) diff --git a/include/xen/xen.h b/include/xen/xen.h index 1e1d9bd0bd37..d7a2678da77f 100644 --- a/include/xen/xen.h +++ b/include/xen/xen.h @@ -39,4 +39,8 @@ extern uint32_t xen_start_flags; #define xen_initial_domain() (0) #endif /* CONFIG_XEN_DOM0 */ +struct bio_vec; +bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, + const struct bio_vec *vec2); + #endif /* _XEN_XEN_H */ -- 2.19.0
