[dm-devel] [PATCH 2/4] dm-userspace: use kernel threads for do_map_bio
FUJITA Tomonori
fujita.tomonori at lab.ntt.co.jp
Sat Sep 30 10:44:32 UTC 2006
No need to care about I/O reordering, so kernel threads can performs
do_map_bio (that might provide the better performance).
Signed-off-by: FUJITA Tomonori <fujita.tomonori at lab.ntt.co.jp>
---
drivers/md/dm-userspace-chardev.c | 9 ---------
1 files changed, 0 insertions(+), 9 deletions(-)
diff --git a/drivers/md/dm-userspace-chardev.c b/drivers/md/dm-userspace-chardev.c
index 869e359..1853d0d 100644
--- a/drivers/md/dm-userspace-chardev.c
+++ b/drivers/md/dm-userspace-chardev.c
@@ -358,17 +358,8 @@ static void do_map_bio(struct dmu_device
memcpy(&req->response, msg, sizeof(req->response));
-#if 0
- /* I think it would be nice to farm this out to a worker
- * thread, so that userspace does not have to do all the work,
- * but I wonder about the correctness of possibly reordering
- * requests to a single block
- */
INIT_WORK(&req->task, map_worker, req);
schedule_work(&req->task);
-#else
- map_worker(req);
-#endif
}
static void do_map_done(struct dmu_device *dev, uint64_t id_of_op, int fail)
--
1.4.1
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