From: Steve Whitehouse <steve@gw.chygwyn.com>
To: torvalds@transmeta.com
Cc: pavel@suse.cz, linux-kernel@vger.kernel.org
Subject: NBD Cleanup patch and bugfix in ll_rw_blk.c
Date: Sun, 25 Feb 2001 19:57:29 +0000 (GMT) [thread overview]
Message-ID: <200102251957.TAA01718@gw.chygwyn.com> (raw)
Hi,
Here is a new version of the patch I recently sent to the list with some
NBD cleanups and a bug fix in ll_rw_blk.c. The changes to NBD have Pavel
Machek's approval as I've left out the two changes as he suggested.
The bug fix in ll_rw_blk.c prevents hangs when using block devices which
don't have plugging functions,
Steve.
------------------------------------------------------------------------------
diff -u -r linux-2.4.2/drivers/block/ll_rw_blk.c linux/drivers/block/ll_rw_blk.c
--- linux-2.4.2/drivers/block/ll_rw_blk.c Thu Feb 22 19:46:23 2001
+++ linux/drivers/block/ll_rw_blk.c Sun Feb 25 19:35:43 2001
@@ -588,6 +588,9 @@
* inserted at elevator_merge time
*/
list_add(&req->queue, insert_here);
+
+ if (!q->plugged && insert_here == &q->queue_head)
+ q->request_fn(q);
}
void inline blk_refill_freelist(request_queue_t *q, int rw)
diff -u -r linux-2.4.2/drivers/block/nbd.c linux/drivers/block/nbd.c
--- linux-2.4.2/drivers/block/nbd.c Mon Oct 30 22:30:33 2000
+++ linux/drivers/block/nbd.c Sun Feb 25 19:35:43 2001
@@ -29,7 +29,7 @@
#include <linux/major.h>
#include <linux/module.h>
-
+#include <linux/init.h>
#include <linux/sched.h>
#include <linux/fs.h>
#include <linux/stat.h>
@@ -149,12 +149,13 @@
{
int result;
struct nbd_request request;
+ unsigned long size = req->current_nr_sectors << 9;
DEBUG("NBD: sending control, ");
request.magic = htonl(NBD_REQUEST_MAGIC);
request.type = htonl(req->cmd);
request.from = cpu_to_be64( (u64) req->sector << 9);
- request.len = htonl(req->current_nr_sectors << 9);
+ request.len = htonl(size);
memcpy(request.handle, &req, sizeof(req));
result = nbd_xmit(1, sock, (char *) &request, sizeof(request));
@@ -163,7 +164,7 @@
if (req->cmd == WRITE) {
DEBUG("data, ");
- result = nbd_xmit(1, sock, req->buffer, req->current_nr_sectors << 9);
+ result = nbd_xmit(1, sock, req->buffer, size);
if (result <= 0)
FAIL("Send data failed.");
}
@@ -475,11 +476,7 @@
* (Just smiley confuses emacs :-)
*/
-#ifdef MODULE
-#define nbd_init init_module
-#endif
-
-int nbd_init(void)
+int __init nbd_init(void)
{
int i;
@@ -526,8 +523,7 @@
return 0;
}
-#ifdef MODULE
-void cleanup_module(void)
+void __exit nbd_cleanup(void)
{
devfs_unregister (devfs_handle);
blk_cleanup_queue(BLK_DEFAULT_QUEUE(MAJOR_NR));
@@ -537,4 +533,9 @@
else
printk("nbd: module cleaned up.\n");
}
-#endif
+
+module_init(nbd_init);
+module_exit(nbd_cleanup);
+
+MODULE_DESCRIPTION("Network Block Device");
+
next reply other threads:[~2001-02-25 20:02 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-02-25 19:57 Steve Whitehouse [this message]
2001-02-25 20:55 ` NBD Cleanup patch and bugfix in ll_rw_blk.c Andrea Arcangeli
2001-02-25 20:59 ` Jens Axboe
2001-02-25 22:39 ` Russell King
2001-02-25 22:49 ` Jens Axboe
2001-02-25 23:02 ` Steve Whitehouse
2001-02-28 19:41 ` Linus Torvalds
2001-02-28 21:27 ` Steve Whitehouse
2001-02-28 21:37 ` Jens Axboe
2001-02-28 23:29 ` Linus Torvalds
2001-03-01 0:07 ` Jens Axboe
2001-03-01 3:14 ` Linus Torvalds
[not found] ` <200103010314.TAA06827@penguin.transmeta.com>
2001-03-01 13:39 ` Jens Axboe
2001-03-01 14:49 ` Jens Axboe
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