AcoSail/kernel_optimize_test
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nbd: change a parameter's type to remove a memcpy call

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This memcpy looks so strange, in fact it's merely a pointer dereference, so I
change the parameter's type to refer it more directly, this could make the
memcpy not needed anymore.

In the function nbd_read_stat where nbd_find_request is only once called, the
parameter served should be transformed accordingly.

Signed-off-by: Denis Cheng <crquan@gmail.com>
Cc: Paul Clements <paul.clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Denis Cheng 2007-10-16 23:26:14 -07:00 committed by Linus Torvalds
parent d2c9740b49
commit 0cbc591bf8
1 changed files with 3 additions and 5 deletions
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8
drivers/block/nbd.c
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@ -231,14 +231,12 @@ static int nbd_send_req(struct nbd_device *lo, struct request *req)
return 1;
}
static struct request *nbd_find_request(struct nbd_device *lo, char *handle)
static struct request *nbd_find_request(struct nbd_device *lo,
struct request *xreq)
{
struct request *req, *tmp;
struct request *xreq;
int err;
memcpy(&xreq, handle, sizeof(xreq));
err = wait_event_interruptible(lo->active_wq, lo->active_req != xreq);
if (unlikely(err))
goto out;
@ -293,7 +291,7 @@ static struct request *nbd_read_stat(struct nbd_device *lo)
goto harderror;
}
req = nbd_find_request(lo, reply.handle);
req = nbd_find_request(lo, *(struct request **)reply.handle);
if (unlikely(IS_ERR(req))) {
result = PTR_ERR(req);
if (result != -ENOENT)