Re: [PATCH 1/1] xen/blkfront: fix comment for need_copy
On Thu, 17 Mar 2022 15:09:30 -0700, Dongli Zhang wrote: > 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," > > Applied, thanks! [1/1] xen/blkfront: fix comment for need_copy commit: 08719dd9176b4c55f547bd11812fd6cc35907d37 Best regards, -- Jens Axboe
Re: [PATCH 1/1] xen/blkfront: fix comment for need_copy
On 21.03.22 11:05, Roger Pau Monné wrote: On Thu, Mar 17, 2022 at 03:09:30PM -0700, Dongli Zhang wrote: 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," I would also add: Fixes: c004a6fe0c40 ('block/xen-blkfront: Make it running on 64KB page granularity') Hmm, a "Fixes:" tag for a change in a comment? This might generate additional work e.g. for downstreams (we at SUSE have scripts checking "Fixes:" tags and require such changes to be applied to kernels having the fixed patch applied). That said I'd prefer not having a "Fixes:" tag for such changes, but maybe this is just due to the fact that it would be me having to apply this patch to the SUSE kernels... Juergen OpenPGP_0xB0DE9DD628BF132F.asc Description: OpenPGP public key OpenPGP_signature Description: OpenPGP digital signature
Re: [PATCH 1/1] xen/blkfront: fix comment for need_copy
On Thu, Mar 17, 2022 at 03:09:30PM -0700, Dongli Zhang wrote: > 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," I would also add: Fixes: c004a6fe0c40 ('block/xen-blkfront: Make it running on 64KB page granularity') > Signed-off-by: Dongli Zhang Acked-by: Roger Pau Monné Albeit I have one nit since you are already changing the line. > --- > 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 */ While there you might want to adjust the comment to: "... persistent grants are used ..." Thanks, Roger.
Re: [PATCH 1/1] xen/blkfront: fix comment for need_copy
On 3/17/22 3:09 PM, Dongli Zhang wrote: > 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 > --- Looks good. Reviewed-by: Chaitanya Kulkarni -ck
[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 --- 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