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io context: increment task attachment count in ioc_task_link()

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

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe
2008-04-15 09:25:33 +02:00
parent a985aabe4d
commit d237e5c7ce
1 changed files with 3 additions and 1 deletions
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4
include/linux/iocontext.h
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@ -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 * if ref count is zero, don't allow sharing (ioc is going away, it's
* a race). * 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 ioc;
}
return NULL; return NULL;
} }