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[PATCH 1/1] xen/blkfront: fix comment for need_copy


  • To: linux-block@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Dongli Zhang <dongli.zhang@xxxxxxxxxx>
  • Date: Thu, 17 Mar 2022 15:09:30 -0700
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  • Cc: boris.ostrovsky@xxxxxxxxxx, jgross@xxxxxxxx, sstabellini@xxxxxxxxxx, roger.pau@xxxxxxxxxx, axboe@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
  • Delivery-date: Thu, 17 Mar 2022 22:10:05 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

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@xxxxxxxxxx>
---
 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




 


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