On 08/28/2013 07:19 PM, Sage Weil wrote:
> Fix a typo that used the wrong bitmask for the pg.seed calculation. This
> is normally unnoticed because in most cases pg_num == pgp_num. It is, however,
> a bug that is easily corrected.
Looks good to me. The other two uses of pgp_num_mask are coupled with
pgp_num (not pg_num) in a ceph_stable_mod() call.
Reviewed-by: Alex Elder <elder@xxxxxxxxxx>
> CC: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Sage Weil <sage@xxxxxxxxxxx>
> ---
> net/ceph/osdmap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
> index 603ddd9..dbd9a47 100644
> --- a/net/ceph/osdmap.c
> +++ b/net/ceph/osdmap.c
> @@ -1129,7 +1129,7 @@ static int *calc_pg_raw(struct ceph_osdmap *osdmap, struct ceph_pg pgid,
>
> /* pg_temp? */
> pgid.seed = ceph_stable_mod(pgid.seed, pool->pg_num,
> - pool->pgp_num_mask);
> + pool->pg_num_mask);
> pg = __lookup_pg_mapping(&osdmap->pg_temp, pgid);
> if (pg) {
> *num = pg->len;
>
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