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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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