rbd: kill rbd_image_header->snap_seq

The snap_seq field in an rbd_image_header structure held the value
from the rbd image header when it was last refreshed.  We now
maintain this value in the snapc->seq field.  So get rid of the
other one.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index c299a55..6df8c62 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -82,7 +82,6 @@ struct rbd_image_header {
        __u8 comp_type;
        struct ceph_snap_context *snapc;
        size_t snap_names_len;
-       u64 snap_seq;
        u32 total_snaps;
 
        char *snap_names;
@@ -536,7 +535,6 @@ static int rbd_header_from_disk(struct rbd_image_header *header,
        header->comp_type = ondisk->options.comp_type;
 
        atomic_set(&header->snapc->nref, 1);
-       header->snap_seq = le64_to_cpu(ondisk->snap_seq);
        header->snapc->seq = le64_to_cpu(ondisk->snap_seq);
        header->snapc->num_snaps = snap_count;
        header->total_snaps = snap_count;