Reviewed-by: On Thu, 22 May 2014, Ilya Dryomov wrote:
> Add ceph_monc_wait_osdmap(), which will block until the osdmap with the > specified epoch is received or timeout occurs. > > Export both of these as they are going to be needed by rbd. > > Signed-off-by: Ilya Dryomov <[email protected]> > --- > include/linux/ceph/mon_client.h | 2 ++ > net/ceph/mon_client.c | 27 +++++++++++++++++++++++++++ > 2 files changed, 29 insertions(+) > > diff --git a/include/linux/ceph/mon_client.h b/include/linux/ceph/mon_client.h > index 585ef9450e9d..deb47e45ac7c 100644 > --- a/include/linux/ceph/mon_client.h > +++ b/include/linux/ceph/mon_client.h > @@ -104,6 +104,8 @@ extern int ceph_monc_got_mdsmap(struct ceph_mon_client > *monc, u32 have); > extern int ceph_monc_got_osdmap(struct ceph_mon_client *monc, u32 have); > > extern void ceph_monc_request_next_osdmap(struct ceph_mon_client *monc); > +extern int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch, > + unsigned long timeout); > > extern int ceph_monc_do_statfs(struct ceph_mon_client *monc, > struct ceph_statfs *buf); > diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c > index 6b46f1205ceb..ecfd65c05f49 100644 > --- a/net/ceph/mon_client.c > +++ b/net/ceph/mon_client.c > @@ -296,6 +296,33 @@ void ceph_monc_request_next_osdmap(struct > ceph_mon_client *monc) > __send_subscribe(monc); > mutex_unlock(&monc->mutex); > } > +EXPORT_SYMBOL(ceph_monc_request_next_osdmap); > + > +int ceph_monc_wait_osdmap(struct ceph_mon_client *monc, u32 epoch, > + unsigned long timeout) > +{ > + unsigned long started = jiffies; > + int ret; > + > + mutex_lock(&monc->mutex); > + while (monc->have_osdmap < epoch) { > + mutex_unlock(&monc->mutex); > + > + if (timeout != 0 && time_after_eq(jiffies, started + timeout)) > + return -ETIMEDOUT; > + > + ret = wait_event_interruptible_timeout(monc->client->auth_wq, > + monc->have_osdmap >= epoch, timeout); > + if (ret < 0) > + return ret; > + > + mutex_lock(&monc->mutex); > + } > + > + mutex_unlock(&monc->mutex); > + return 0; > +} > +EXPORT_SYMBOL(ceph_monc_wait_osdmap); > > /* > * > -- > 1.7.10.4 > > -- > 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 > > -- 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
