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Commit def5b5b2 authored by Matthias Kaehlcke's avatar Matthias Kaehlcke Committed by Alasdair G Kergon
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kcopyd use mutex instead of semaphore 



Kcopyd uses a semaphore as mutex.  Use the mutex API instead of the (binary)
semaphore,

Signed-off-by: default avatarMatthias Kaehlcke <matthias.kaehlcke@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 094262db

drivers/md/kcopyd.c

+4 −4
Original line number Diff line number Diff line
@@ -198,7 +198,7 @@ struct kcopyd_job { 
	 * These fields are only used if the job has been split

	 * into more manageable parts.

	 */

	struct semaphore lock;

	struct mutex lock;

	atomic_t sub_jobs;

	sector_t progress;

};
@@ -456,7 +456,7 @@ static void segment_complete(int read_err, 
	sector_t count = 0;

	struct kcopyd_job *job = (struct kcopyd_job *) context;



	down(&job->lock);

	mutex_lock(&job->lock);



	/* update the error */

	if (read_err)
@@ -480,7 +480,7 @@ static void segment_complete(int read_err, 
			job->progress += count;

		}

	}

	up(&job->lock);

	mutex_unlock(&job->lock);



	if (count) {

		int i;
@@ -562,7 +562,7 @@ int kcopyd_copy(struct kcopyd_client *kc, struct io_region *from, 
		dispatch_job(job);



	else {

		init_MUTEX(&job->lock);

		mutex_init(&job->lock);

		job->progress = 0;

		split_job(job);

	}