diff options
| author | Alex Elder <elder@inktank.com> | 2013-05-06 16:51:29 +0200 |
|---|---|---|
| committer | Alex Elder <elder@inktank.com> | 2013-05-09 00:00:00 +0200 |
| commit | f35a4dee14c31dc00807f3bcd59cc7a6959f63d7 (patch) | |
| tree | f0919e92b27e9e9c556afa66e2ca69cdd601226c /drivers/block | |
| parent | rbd: always set read-only flag in rbd_add() (diff) | |
| download | linux-f35a4dee14c31dc00807f3bcd59cc7a6959f63d7.tar.xz linux-f35a4dee14c31dc00807f3bcd59cc7a6959f63d7.zip | |
rbd: set the mapping size and features later
Defer setting the size and features fields of a mapped image until
after the Linux disk structure is set up. Set the capacity of the
disk after that.
Rearrange the definition of rbd_image_header, separating the fields
that are set only once from those that can be updated.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index b5cac7931ffc..a05b6e5dc362 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -100,21 +100,20 @@ * block device image metadata (in-memory version) */ struct rbd_image_header { - /* These four fields never change for a given rbd image */ + /* These six fields never change for a given rbd image */ char *object_prefix; - u64 features; __u8 obj_order; __u8 crypt_type; __u8 comp_type; + u64 stripe_unit; + u64 stripe_count; + u64 features; /* Might be changeable someday? */ /* The remaining fields need to be updated occasionally */ u64 image_size; struct ceph_snap_context *snapc; - char *snap_names; - u64 *snap_sizes; - - u64 stripe_unit; - u64 stripe_count; + char *snap_names; /* format 1 only */ + u64 *snap_sizes; /* format 1 only */ }; /* @@ -4637,10 +4636,6 @@ static int rbd_dev_device_setup(struct rbd_device *rbd_dev) { int ret; - ret = rbd_dev_mapping_set(rbd_dev); - if (ret) - return ret; - /* generate unique id: find highest unique id, add one */ rbd_dev_id_get(rbd_dev); @@ -4662,13 +4657,17 @@ static int rbd_dev_device_setup(struct rbd_device *rbd_dev) if (ret) goto err_out_blkdev; - ret = rbd_bus_add_dev(rbd_dev); + ret = rbd_dev_mapping_set(rbd_dev); if (ret) goto err_out_disk; + set_capacity(rbd_dev->disk, rbd_dev->mapping.size / SECTOR_SIZE); + + ret = rbd_bus_add_dev(rbd_dev); + if (ret) + goto err_out_mapping; /* Everything's ready. Announce the disk to the world. */ - set_capacity(rbd_dev->disk, rbd_dev->mapping.size / SECTOR_SIZE); set_bit(RBD_DEV_FLAG_EXISTS, &rbd_dev->flags); add_disk(rbd_dev->disk); @@ -4677,6 +4676,8 @@ static int rbd_dev_device_setup(struct rbd_device *rbd_dev) return ret; +err_out_mapping: + rbd_dev_mapping_clear(rbd_dev); err_out_disk: rbd_free_disk(rbd_dev); err_out_blkdev: |