fs: make sb_init_dio_done_wq available outside of direct-io.c

Christoph Hellwig · dchinner · commit ec1b826097f3 · 2016-11-30T14:33:53.000+11:00
We want to use the per-sb completion workqueue from the new iomap
direct I/O code.

Signed-off-by: Christoph Hellwig &lt;hch@lst.de&gt;
Tested-by: Jens Axboe &lt;axboe@fb.com&gt;
Reviewed-by: Darrick J. Wong &lt;darrick.wong@oracle.com&gt;
Signed-off-by: Dave Chinner &lt;david@fromorbit.com&gt;
diff --git a/fs/direct-io.c b/fs/direct-io.c
@@ -554,7 +554,7 @@ static inline int dio_bio_reap(struct dio *dio, struct dio_submit *sdio)
  * filesystems that don't need it and also allows us to create the workqueue
  * late enough so the we can include s_id in the name of the workqueue.
  */
-static int sb_init_dio_done_wq(struct super_block *sb)
+int sb_init_dio_done_wq(struct super_block *sb)
 {
 	struct workqueue_struct *old;
 	struct workqueue_struct *wq = alloc_workqueue("dio/%s",
diff --git a/fs/internal.h b/fs/internal.h
@@ -184,3 +184,6 @@ typedef loff_t (*iomap_actor_t)(struct inode *inode, loff_t pos, loff_t len,
 loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length,
 		unsigned flags, struct iomap_ops *ops, void *data,
 		iomap_actor_t actor);
+
+/* direct-io.c: */
+int sb_init_dio_done_wq(struct super_block *sb);

Original file line number	Diff line number	Diff line change
`@@ -554,7 +554,7 @@ static inline int dio_bio_reap(struct dio dio, struct dio_submit sdio)`
`554`	`554`	`* filesystems that don't need it and also allows us to create the workqueue`
`555`	`555`	`* late enough so the we can include s_id in the name of the workqueue.`
`556`	`556`	`*/`
`557`		`-static int sb_init_dio_done_wq(struct super_block *sb)`
	`557`	`+int sb_init_dio_done_wq(struct super_block *sb)`
`558`	`558`	`{`
`559`	`559`	`struct workqueue_struct *old;`
`560`	`560`	`struct workqueue_struct *wq = alloc_workqueue("dio/%s",`