linux-kernel - [PATCH 07/16] rbd: use memzero

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Date:   Tue,  8 Jun 2021 18:05:54 +0200
From:   Christoph Hellwig <hch@....de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Geoff Levand <geoff@...radead.org>,
        Ilya Dryomov <idryomov@...il.com>,
        Dongsheng Yang <dongsheng.yang@...ystack.cn>,
        Mike Snitzer <snitzer@...hat.com>,
        Ira Weiny <ira.weiny@...el.com>, dm-devel@...hat.com,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-block@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        ceph-devel@...r.kernel.org
Subject: [PATCH 07/16] rbd: use memzero_bvec

Use memzero_bvec instead of reimplementing it.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/block/rbd.c | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index bbb88eb009e0..eb243fc4d108 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1219,24 +1219,13 @@ static void rbd_dev_mapping_clear(struct rbd_device *rbd_dev)
 	rbd_dev->mapping.size = 0;
 }
 
-static void zero_bvec(struct bio_vec *bv)
-{
-	void *buf;
-	unsigned long flags;
-
-	buf = bvec_kmap_irq(bv, &flags);
-	memset(buf, 0, bv->bv_len);
-	flush_dcache_page(bv->bv_page);
-	bvec_kunmap_irq(buf, &flags);
-}
-
 static void zero_bios(struct ceph_bio_iter *bio_pos, u32 off, u32 bytes)
 {
 	struct ceph_bio_iter it = *bio_pos;
 
 	ceph_bio_iter_advance(&it, off);
 	ceph_bio_iter_advance_step(&it, bytes, ({
-		zero_bvec(&bv);
+		memzero_bvec(&bv);
 	}));
 }
 
@@ -1246,7 +1235,7 @@ static void zero_bvecs(struct ceph_bvec_iter *bvec_pos, u32 off, u32 bytes)
 
 	ceph_bvec_iter_advance(&it, off);
 	ceph_bvec_iter_advance_step(&it, bytes, ({
-		zero_bvec(&bv);
+		memzero_bvec(&bv);
 	}));
 }
 
-- 
2.30.2