libceph: add function that clears osd client's abort_err

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

include/linux/ceph/osd_client.h

@@ -389,6 +389,7 @@ extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
 				 struct ceph_msg *msg);
 void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb);
 void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err);
+void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc);
 
 #define osd_req_op_data(oreq, whch, typ, fld)				\
 ({									\

net/ceph/osd_client.c

@@ -2476,6 +2476,14 @@ void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err)
 }
 EXPORT_SYMBOL(ceph_osdc_abort_requests);
 
+void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc)
+{
+	down_write(&osdc->lock);
+	osdc->abort_err = 0;
+	up_write(&osdc->lock);
+}
+EXPORT_SYMBOL(ceph_osdc_clear_abort_err);
+
 static void update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb)
 {
 	if (likely(eb > osdc->epoch_barrier)) {