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Commit eb845ff1 authored by Yan, Zheng's avatar Yan, Zheng Committed by Sage Weil
Browse files

libceph: fix safe completion 



handle_reply() calls complete_request() only if the first OSD reply
has ONDISK flag.

Signed-off-by: default avatarYan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: default avatarSage Weil <sage@inktank.com>
parent d552c619

include/linux/ceph/osd_client.h

+0 −1
Original line number Diff line number Diff line
@@ -145,7 +145,6 @@ struct ceph_osd_request { 
	s32               r_reply_op_result[CEPH_OSD_MAX_OP];

	int               r_got_reply;

	int		  r_linger;

	int		  r_completed;



	struct ceph_osd_client *r_osdc;

	struct kref       r_kref;

net/ceph/osd_client.c

+8 −9
Original line number Diff line number Diff line
@@ -1522,6 +1522,8 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 
	for (i = 0; i < numops; i++)

		req->r_reply_op_result[i] = ceph_decode_32(&p);



	already_completed = req->r_got_reply;



	if (!req->r_got_reply) {



		req->r_result = result;
@@ -1552,16 +1554,14 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg, 
	    ((flags & CEPH_OSD_FLAG_WRITE) == 0))

		__unregister_request(osdc, req);



	already_completed = req->r_completed;

	req->r_completed = 1;

	mutex_unlock(&osdc->request_mutex);

	if (already_completed)

		goto done;



	if (!already_completed) {

		if (req->r_callback)

			req->r_callback(req, msg);

		else

			complete_all(&req->r_completion);

	}



	if (flags & CEPH_OSD_FLAG_ONDISK)

		complete_request(req);
@@ -2121,7 +2121,6 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc, 
	__register_request(osdc, req);

	req->r_sent = 0;

	req->r_got_reply = 0;

	req->r_completed = 0;

	rc = __map_request(osdc, req, 0);

	if (rc < 0) {

		if (nofail) {