From: Vitaly Fertman <vitaly.fertman@xxxxxxxxxxx> A race between unregister_reply & early reply. When buffers are busy for the early transfer, they cannon be unlinked by unregister_reply, so the RPC gets into UNREGISTERING state. The coming reply_in_callback for the early RPC already has unlinked flag set due to previous mdunlink attempt, but we handle it properly only for UNILNK event, whereas this is PUT in this case. Signed-off-by: Vitaly Fertman <vitaly.fertman@xxxxxxxxxxx> Seagate-bug-id: MRP-3323 Reviewed-by: Alexey Leonidovich Lyashkov <alexey.lyashkov@xxxxxxxxxxx> Reviewed-by: Andriy Skulysh <andriy.skulysh@xxxxxxxxxxx> Tested-by: Parinay Vijayprakash Kondekar <parinay.kondekar@xxxxxxxxxxx> Reviewed-on: http://review.whamcloud.com/18934 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-7434 Reviewed-by: Chris Horn <hornc@xxxxxxxx> Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> Signed-off-by: Oleg Drokin <green@xxxxxxxxxxxxxx> --- drivers/staging/lustre/lustre/ptlrpc/events.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/staging/lustre/lustre/ptlrpc/events.c b/drivers/staging/lustre/lustre/ptlrpc/events.c index a243342..b1ce725 100644 --- a/drivers/staging/lustre/lustre/ptlrpc/events.c +++ b/drivers/staging/lustre/lustre/ptlrpc/events.c @@ -137,7 +137,8 @@ void reply_in_callback(lnet_event_t *ev) req->rq_early_count++; /* number received, client side */ - if (req->rq_replied) /* already got the real reply */ + /* already got the real reply or buffers are already unlinked */ + if (req->rq_replied || req->rq_reply_unlinked == 1) goto out_wake; req->rq_early = 1; -- 2.7.4 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
