This is updated whenever a snapshot is added or deleted, and the snapc pointer is changed with every refresh of the header. Signed-off-by: Josh Durgin <josh.durgin@xxxxxxxxxxxxx> Reviewed-by: Alex Elder <elder@xxxxxxxxxxxxx> --- drivers/block/rbd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) Index: b/drivers/block/rbd.c =================================================================== --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1685,7 +1685,9 @@ if (ret < 0) return ret; - dev->header.snapc->seq = new_snapid; + down_write(&dev->header_rwsem); + dev->header.snapc->seq = new_snapid; + up_write(&dev->header_rwsem); return 0; bad: -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
