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| author | Josh Durgin <josh.durgin@dreamhost.com> | 2011-12-06 03:10:44 +0100 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2012-07-31 03:15:40 +0200 |
| commit | a71b891bc7d77a070e723c8c53d1dd73cf931555 (patch) | |
| tree | d5abf327bcf26a8fcc2a9fd41d846c87ad141030 /drivers/block | |
| parent | rbd: use reference counting for the snap context (diff) | |
| download | linux-a71b891bc7d77a070e723c8c53d1dd73cf931555.tar.xz linux-a71b891bc7d77a070e723c8c53d1dd73cf931555.zip | |
rbd: send header version when notifying
Previously the original header version was sent. Now, we update it
when the header changes.
Signed-off-by: Josh Durgin <josh.durgin@dreamhost.com>
Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/rbd.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 988f94458f95..4d3a1e02130b 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1197,7 +1197,7 @@ static int rbd_req_sync_notify_ack(struct rbd_device *rbd_dev, if (ret < 0) return ret; - ops[0].watch.ver = cpu_to_le64(rbd_dev->header.obj_version); + ops[0].watch.ver = cpu_to_le64(ver); ops[0].watch.cookie = notify_id; ops[0].watch.flag = 0; @@ -1216,6 +1216,7 @@ static int rbd_req_sync_notify_ack(struct rbd_device *rbd_dev, static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data) { struct rbd_device *rbd_dev = (struct rbd_device *)data; + u64 hver; int rc; if (!rbd_dev) @@ -1225,12 +1226,13 @@ static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data) rbd_dev->header_name, notify_id, (int) opcode); mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING); rc = __rbd_refresh_header(rbd_dev); + hver = rbd_dev->header.obj_version; mutex_unlock(&ctl_mutex); if (rc) pr_warning(RBD_DRV_NAME "%d got notification but failed to " " update snaps: %d\n", rbd_dev->major, rc); - rbd_req_sync_notify_ack(rbd_dev, ver, notify_id, rbd_dev->header_name); + rbd_req_sync_notify_ack(rbd_dev, hver, notify_id, rbd_dev->header_name); } /* @@ -1746,6 +1748,7 @@ static int __rbd_refresh_header(struct rbd_device *rbd_dev) /* osd requests may still refer to snapc */ ceph_put_snap_context(rbd_dev->header.snapc); + rbd_dev->header.obj_version = h.obj_version; rbd_dev->header.image_size = h.image_size; rbd_dev->header.total_snaps = h.total_snaps; rbd_dev->header.snapc = h.snapc; |