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| author |   Dongli Zhang <dongli.zhang@oracle.com> | 2022-03-17 15:09:30 -0700 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-03-21 06:31:44 -0600 |
| commit | 08719dd9176b4c55f547bd11812fd6cc35907d37 (patch) | |
| tree | 72640cee51ab739958ed47bebe630c5d365e6483 /drivers/block | |
| parent | xen-blkback: remove redundant assignment to variable i (diff) | |
| download | linux-dev-08719dd9176b4c55f547bd11812fd6cc35907d37.tar.xz linux-dev-08719dd9176b4c55f547bd11812fd6cc35907d37.zip | |
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@oracle.com>
Fixes: c004a6fe0c40 ('block/xen-blkfront: Make it running on 64KB page granularity')
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20220317220930.5698-1-dongli.zhang@oracle.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 5d04e480f36a..852df3f2c12a 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; |