Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / block / rbd.c

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 3063452e55daf5dafd5b28bb536f81109212fc2e..aff789d6fccd35b7f0a0c3314e5c04951c6c774c 100644 (file)
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1036,12 +1036,16 @@ static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset)
        char *name;
        u64 segment;
        int ret;
+       char *name_format;
 
        name = kmem_cache_alloc(rbd_segment_name_cache, GFP_NOIO);
        if (!name)
                return NULL;
        segment = offset >> rbd_dev->header.obj_order;
-       ret = snprintf(name, MAX_OBJ_NAME_SIZE + 1, "%s.%012llx",
+       name_format = "%s.%012llx";
+       if (rbd_dev->image_format == 2)
+               name_format = "%s.%016llx";
+       ret = snprintf(name, MAX_OBJ_NAME_SIZE + 1, name_format,
                        rbd_dev->header.object_prefix, segment);
        if (ret < 0 || ret > MAX_OBJ_NAME_SIZE) {
                pr_err("error formatting segment name for #%llu (%d)\n",
@@ -2248,13 +2252,17 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
                                        obj_request->pages, length,
                                        offset & ~PAGE_MASK, false, false);
 
+               /*
+                * set obj_request->img_request before formatting
+                * the osd_request so that it gets the right snapc
+                */
+               rbd_img_obj_request_add(img_request, obj_request);
                if (write_request)
                        rbd_osd_req_format_write(obj_request);
                else
                        rbd_osd_req_format_read(obj_request);
 
                obj_request->img_offset = img_offset;
-               rbd_img_obj_request_add(img_request, obj_request);
 
                img_offset += length;
                resid -= length;
@@ -4239,6 +4247,10 @@ static int rbd_dev_v2_header_info(struct rbd_device *rbd_dev)
 
        down_write(&rbd_dev->header_rwsem);
 
+       ret = rbd_dev_v2_image_size(rbd_dev);
+       if (ret)
+               goto out;
+
        if (first_time) {
                ret = rbd_dev_v2_header_onetime(rbd_dev);
                if (ret)
@@ -4272,10 +4284,6 @@ static int rbd_dev_v2_header_info(struct rbd_device *rbd_dev)
                                        "is EXPERIMENTAL!");
        }
 
-       ret = rbd_dev_v2_image_size(rbd_dev);
-       if (ret)
-               goto out;
-
        if (rbd_dev->spec->snap_id == CEPH_NOSNAP)
                if (rbd_dev->mapping.size != rbd_dev->header.image_size)
                        rbd_dev->mapping.size = rbd_dev->header.image_size;