From: Christoph Hellwig <hch@lst.de>
Date: Thu, 3 Mar 2022 11:18:57 +0000 (+0300)
Subject: aoe: use bvec_kmap_local in bvcpy
X-Git-Tag: v5.18-rc1~195^2~14
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7ab4611b6c793100197abc93e069d6f9aab7960;p=thirdparty%2Fkernel%2Fstable.git

aoe: use bvec_kmap_local in bvcpy

Using local kmaps slightly reduces the chances to stray writes, and
the bvec interface cleans up the code a little bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220303111905.321089-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index cc11f89a0928f..384073ef2323c 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -1018,9 +1018,9 @@ bvcpy(struct sk_buff *skb, struct bio *bio, struct bvec_iter iter, long cnt)
 	iter.bi_size = cnt;
 
 	__bio_for_each_segment(bv, bio, iter, iter) {
-		char *p = kmap_atomic(bv.bv_page) + bv.bv_offset;
+		char *p = bvec_kmap_local(&bv);
 		skb_copy_bits(skb, soff, p, bv.bv_len);
-		kunmap_atomic(p);
+		kunmap_local(p);
 		soff += bv.bv_len;
 	}
 }