Add a helper to call kmap_local_page on a bvec. There is no need for
an unmap helper given that kunmap_local accept any address in the mapped
page.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
include/linux/bvec.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index 883faf5f1523..d64d6c0ceb77 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -7,6 +7,7 @@
#ifndef __LINUX_BVEC_H
#define __LINUX_BVEC_H
+#include <linux/highmem.h>
#include <linux/bug.h>
#include <linux/errno.h>
#include <linux/limits.h>
@@ -183,4 +184,9 @@ static inline void bvec_advance(const struct bio_vec *bvec,
}
}
+static inline void *bvec_kmap_local(struct bio_vec *bvec)
+{
+ return kmap_local_page(bvec->bv_page) + bvec->bv_offset;
+}
+
#endif /* __LINUX_BVEC_H */
--
2.30.2
