There is no need to impose a small limit the length of the object prefix recorded for an rbd image in a struct rbd_image_header. Remove the limitation by allocating space for the object prefix dynamically.
Signed-off-by: Alex Elder <[email protected]> --- drivers/block/rbd.c | 22 +++++++++++++++++----- 1 files changed, 17 insertions(+), 5 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 57d264c..3aa0ca0 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -78,7 +78,7 @@ */ struct rbd_image_header { u64 image_size; - char object_prefix[32]; + char *object_prefix; __u8 obj_order; __u8 crypt_type; __u8 comp_type; @@ -518,8 +518,15 @@ static int rbd_header_from_disk(struct rbd_image_header *header, header->snap_names = NULL; header->snap_sizes = NULL; } + + header->object_prefix = kmalloc(sizeof (ondisk->block_name) + 1, + gfp_flags); + if (!header->object_prefix) + goto err_sizes; + memcpy(header->object_prefix, ondisk->block_name, sizeof(ondisk->block_name)); + header->object_prefix[sizeof (ondisk->block_name)] = '\0'; header->image_size = le64_to_cpu(ondisk->image_size); header->obj_order = ondisk->options.order; @@ -546,6 +553,8 @@ static int rbd_header_from_disk(struct rbd_image_header *header, return 0; +err_sizes: + kfree(header->snap_sizes); err_names: kfree(header->snap_names); err_snapc: @@ -611,9 +620,10 @@ done: static void rbd_header_free(struct rbd_image_header *header) { - kfree(header->snapc); - kfree(header->snap_names); + kfree(header->object_prefix); kfree(header->snap_sizes); + kfree(header->snap_names); + kfree(header->snapc); } /* @@ -1711,15 +1721,17 @@ static int __rbd_refresh_header(struct rbd_device *rbd_dev) if head moves */ follow_seq = 1; - kfree(rbd_dev->header.snapc); - kfree(rbd_dev->header.snap_names); + kfree(rbd_dev->header.object_prefix); kfree(rbd_dev->header.snap_sizes); + kfree(rbd_dev->header.snap_names); + kfree(rbd_dev->header.snapc); rbd_dev->header.total_snaps = h.total_snaps; rbd_dev->header.snapc = h.snapc; rbd_dev->header.snap_names = h.snap_names; rbd_dev->header.snap_names_len = h.snap_names_len; rbd_dev->header.snap_sizes = h.snap_sizes; + rbd_dev->header.object_prefix = h.object_prefix; if (follow_seq) rbd_dev->header.snapc->seq = rbd_dev->header.snapc->snaps[0]; else -- 1.7.5.4 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
