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authorDenis Cheng <crquan@gmail.com>2007-10-16 23:26:14 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:47 -0700
commit0cbc591bf884a5662b2fbb21b5c09fa1c1c7b579 (patch)
tree23b5e92aaa2d8c74a4501d39275431b272341cac
parentd2c9740b499f959ed513375b6e35c2ab161921cb (diff)
downloadop-kernel-dev-0cbc591bf884a5662b2fbb21b5c09fa1c1c7b579.zip
op-kernel-dev-0cbc591bf884a5662b2fbb21b5c09fa1c1c7b579.tar.gz
nbd: change a parameter's type to remove a memcpy call
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>
-rw-r--r--drivers/block/nbd.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index d7a4215..dc88bcf 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -231,14 +231,12 @@ error_out:
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)
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