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| author | Yan, Zheng <zheng.z.yan@intel.com> | 2013-05-31 15:54:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-01-09 12:24:25 -0800 |
| commit | aede2cb5c95588e703e358239a4f3842e21f103e (patch) | |
| tree | 27a9eb82f8239a9e31ce7184f22bfdf8f1d4903b | |
| parent | 7aa73ee13251af1534de166ea5379f32a6bf7793 (diff) | |
| download | linux-3.10-aede2cb5c95588e703e358239a4f3842e21f103e.tar.gz linux-3.10-aede2cb5c95588e703e358239a4f3842e21f103e.tar.bz2 linux-3.10-aede2cb5c95588e703e358239a4f3842e21f103e.zip | |
libceph: fix safe completion
commit eb845ff13a44477f8a411baedbf11d678b9daf0a upstream.
handle_reply() calls complete_request() only if the first OSD reply
has ONDISK flag.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/ceph/osd_client.h | 1 | ||||
| -rw-r--r-- | net/ceph/osd_client.c | 17 |
2 files changed, 8 insertions, 10 deletions
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index 186db0bf495..ce6df39f60f 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -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; diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index d127e36b496..10e947cbc47 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -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 (req->r_callback) - req->r_callback(req, msg); - else - complete_all(&req->r_completion); + 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) { |