linux-kernel - [PATCH 1/1] xen/blkfront: fix comment for need

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Date:   Thu, 17 Mar 2022 15:09:30 -0700
From:   Dongli Zhang <dongli.zhang@...cle.com>
To:     linux-block@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     boris.ostrovsky@...cle.com, jgross@...e.com,
        sstabellini@...nel.org, roger.pau@...rix.com, axboe@...nel.dk,
        linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] xen/blkfront: fix comment for need_copy

The 'need_copy' is set when rq_data_dir(req) returns WRITE, in order to
copy the written data to persistent page.

".need_copy = rq_data_dir(req) && info->feature_persistent,"

Signed-off-by: Dongli Zhang <dongli.zhang@...cle.com>
---
 drivers/block/xen-blkfront.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 03b5fb341e58..dbc32d0a4b1a 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -576,7 +576,7 @@ struct setup_rw_req {
 	struct blkif_request *ring_req;
 	grant_ref_t gref_head;
 	unsigned int id;
-	/* Only used when persistent grant is used and it's a read request */
+	/* Only used when persistent grant is used and it's a write request */
 	bool need_copy;
 	unsigned int bvec_off;
 	char *bvec_data;
-- 
2.17.1