diff options
| author | Ilya Dryomov <idryomov@gmail.com> | 2019-11-07 16:22:10 +0100 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2019-11-25 11:44:02 +0100 |
| commit | f3c0e45900a60e1de1a03f74327ea341e713ea45 (patch) | |
| tree | 131ee552cc847e905bb53eba01f0de73d94b7293 | |
| parent | 2def865a81c23f088140f00beb8e76cbde5b6f95 (diff) | |
rbd: introduce rbd_is_snap()
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Reviewed-by: Dongsheng Yang <dongsheng.yang@easystack.cn>
| -rw-r--r-- | drivers/block/rbd.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 564520185175..2f65798c40c0 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -514,6 +514,11 @@ static int minor_to_rbd_dev_id(int minor) return minor >> RBD_SINGLE_MAJOR_PART_SHIFT; } +static bool rbd_is_snap(struct rbd_device *rbd_dev) +{ + return rbd_dev->spec->snap_id != CEPH_NOSNAP; +} + static bool __rbd_is_lock_owner(struct rbd_device *rbd_dev) { lockdep_assert_held(&rbd_dev->lock_rwsem); @@ -696,7 +701,7 @@ static int rbd_ioctl_set_ro(struct rbd_device *rbd_dev, unsigned long arg) return -EFAULT; /* Snapshots can't be marked read-write */ - if (rbd_dev->spec->snap_id != CEPH_NOSNAP && !ro) + if (rbd_is_snap(rbd_dev) && !ro) return -EROFS; /* Let blkdev_roset() handle it */ @@ -3555,7 +3560,7 @@ static bool need_exclusive_lock(struct rbd_img_request *img_req) if (!(rbd_dev->header.features & RBD_FEATURE_EXCLUSIVE_LOCK)) return false; - if (rbd_dev->spec->snap_id != CEPH_NOSNAP) + if (rbd_is_snap(rbd_dev)) return false; rbd_assert(!test_bit(IMG_REQ_CHILD, &img_req->flags)); @@ -4826,7 +4831,7 @@ static void rbd_queue_workfn(struct work_struct *work) goto err_rq; } - if (op_type != OBJ_OP_READ && rbd_dev->spec->snap_id != CEPH_NOSNAP) { + if (op_type != OBJ_OP_READ && rbd_is_snap(rbd_dev)) { rbd_warn(rbd_dev, "%s on read-only snapshot", obj_op_name(op_type)); result = -EIO; @@ -4841,7 +4846,7 @@ static void rbd_queue_workfn(struct work_struct *work) */ if (!test_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags)) { dout("request for non-existent snapshot"); - rbd_assert(rbd_dev->spec->snap_id != CEPH_NOSNAP); + rbd_assert(rbd_is_snap(rbd_dev)); result = -ENXIO; goto err_rq; } @@ -5084,7 +5089,7 @@ static int rbd_dev_refresh(struct rbd_device *rbd_dev) goto out; } - if (rbd_dev->spec->snap_id == CEPH_NOSNAP) { + if (!rbd_is_snap(rbd_dev)) { rbd_dev->mapping.size = rbd_dev->header.image_size; } else { /* validate mapped snapshot's EXISTS flag */ @@ -6632,7 +6637,7 @@ static int rbd_add_acquire_lock(struct rbd_device *rbd_dev) return -EINVAL; } - if (rbd_dev->spec->snap_id != CEPH_NOSNAP) + if (rbd_is_snap(rbd_dev)) return 0; rbd_assert(!rbd_is_lock_owner(rbd_dev)); @@ -7003,7 +7008,7 @@ static int rbd_dev_image_probe(struct rbd_device *rbd_dev, int depth) if (ret) goto err_out_probe; - if (rbd_dev->spec->snap_id != CEPH_NOSNAP && + if (rbd_is_snap(rbd_dev) && (rbd_dev->header.features & RBD_FEATURE_OBJECT_MAP)) { ret = rbd_object_map_load(rbd_dev); if (ret) @@ -7093,7 +7098,7 @@ static ssize_t do_rbd_add(struct bus_type *bus, } /* If we are mapping a snapshot it must be marked read-only */ - if (rbd_dev->spec->snap_id != CEPH_NOSNAP) + if (rbd_is_snap(rbd_dev)) rbd_dev->opts->read_only = true; if (rbd_dev->opts->alloc_size > rbd_dev->layout.object_size) { |