0545e9dc6d
commit d1edce71135cc6d98c0a4b5729774542b676e769 Author: sophgo-forum-service <forum_service@sophgo.com> Date: Fri Mar 15 16:07:33 2024 +0800 [fix] recommend using ssh method to clone repo. [fix] fix sensor driver repo branch name.
24 lines
617 B
C
24 lines
617 B
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/bio.h>
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#include <linux/export.h>
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#include <xen/xen.h>
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#include <xen/page.h>
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/* check if @page can be merged with 'vec1' */
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bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
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const struct page *page)
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{
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#if XEN_PAGE_SIZE == PAGE_SIZE
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unsigned long bfn1 = pfn_to_bfn(page_to_pfn(vec1->bv_page));
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unsigned long bfn2 = pfn_to_bfn(page_to_pfn(page));
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return bfn1 + PFN_DOWN(vec1->bv_offset + vec1->bv_len) == bfn2;
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#else
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/*
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* XXX: Add support for merging bio_vec when using different page
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* size in Xen and Linux.
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*/
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return false;
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#endif
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}
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