[PATCH 05/16] bvec: add memcpy_{from,to}_bvec and memzero_bvec helper
From: Christoph Hellwig <hch@lst.de>
Date: 2021-06-08 16:06:44
Also in:
ceph-devel, dm-devel, linux-mips, linuxppc-dev, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add helpers to perform common memory operation on a bvec. Signed-off-by: Christoph Hellwig <hch@lst.de> --- include/linux/bvec.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index d64d6c0ceb77..ac835fa01ee3 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h@@ -189,4 +189,19 @@ static inline void *bvec_kmap_local(struct bio_vec *bvec) return kmap_local_page(bvec->bv_page) + bvec->bv_offset; } +static inline void memcpy_from_bvec(char *to, struct bio_vec *bvec) +{ + memcpy_from_page(to, bvec->bv_page, bvec->bv_offset, bvec->bv_len); +} + +static inline void memcpy_to_bvec(struct bio_vec *bvec, const char *from) +{ + memcpy_to_page(bvec->bv_page, bvec->bv_offset, from, bvec->bv_len); +} + +static inline void memzero_bvec(struct bio_vec *bvec) +{ + memzero_page(bvec->bv_page, bvec->bv_offset, bvec->bv_len); +} + #endif /* __LINUX_BVEC_H */
--
2.30.2