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io context: increment task attachment count in ioc_task_link()
author
Jens Axboe
<jens.axboe@oracle.com>
Tue, 15 Apr 2008 07:25:33 +0000
(09:25 +0200)
committer
Jens Axboe
<jens.axboe@oracle.com>
Tue, 15 Apr 2008 07:25:33 +0000
(09:25 +0200)
Thanks to Nikanth Karthikesan <knikanth@suse.de> for reporting this.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
include/linux/iocontext.h
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diff --git
a/include/linux/iocontext.h
b/include/linux/iocontext.h
index
cac4b36
..
2b7a118
100644
(file)
--- 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;
}