[PATCH 05/15] block: use memzero_page in zero_fill_bio
From: Christoph Hellwig <hch@lst.de>
Date: 2021-07-27 06:07:47
Also in:
ceph-devel, dm-devel, linux-arch, linux-block, linux-mips, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
Use memzero_bvec to zero each segment in the bio instead of manually mapping and zeroing the data. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <redacted> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> --- block/bio.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/block/bio.c b/block/bio.c
index 1fab762e079b..2e436bccb1e2 100644
--- a/block/bio.c
+++ b/block/bio.c@@ -495,16 +495,11 @@ EXPORT_SYMBOL(bio_kmalloc); void zero_fill_bio(struct bio *bio) { - unsigned long flags; struct bio_vec bv; struct bvec_iter iter; - bio_for_each_segment(bv, bio, iter) { - char *data = bvec_kmap_irq(&bv, &flags); - memset(data, 0, bv.bv_len); - flush_dcache_page(bv.bv_page); - bvec_kunmap_irq(data, &flags); - } + bio_for_each_segment(bv, bio, iter) + memzero_bvec(&bv); } EXPORT_SYMBOL(zero_fill_bio);
--
2.30.2