From: Jens Axboe <jens.axboe@oracle.com>
Date: Tue, 15 Apr 2008 07:25:33 +0000 (+0200)
Subject: io context: increment task attachment count in ioc_task_link()
X-Git-Tag: v2.6.25~2^2~1
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d237e5c7ce82b6c7e1aa50348520a0c5a47274fa;p=linux-2.6

io context: increment task attachment count in ioc_task_link()

Thanks to Nikanth Karthikesan <knikanth@suse.de> for reporting this.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
index cac4b364cd..2b7a1187cb 100644
--- a/include/linux/iocontext.h
+++ b/include/linux/iocontext.h
@@ -91,8 +91,10 @@ static inline struct io_context *ioc_task_link(struct io_context *ioc)
 	 * if ref count is zero, don't allow sharing (ioc is going away, it's
 	 * a race).
 	 */
-	if (ioc && atomic_inc_not_zero(&ioc->refcount))
+	if (ioc && atomic_inc_not_zero(&ioc->refcount)) {
+		atomic_inc(&ioc->nr_tasks);
 		return ioc;
+	}
 
 	return NULL;
 }