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Commit 2d04f6b9 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  bio: fix memcpy corruption in bio_copy_user_iov()
  hd: fix locking
  mg_disk: fix CONFIG_LBD=y warning
  mg_disk: fix locking
parents 8b86bd7a 69838727

drivers/block/hd.c

+7 −10
Original line number Diff line number Diff line
@@ -509,7 +509,6 @@ ok_to_write: 
	if (i > 0) {

		SET_HANDLER(&write_intr);

		outsw(HD_DATA, req->buffer, 256);

		local_irq_enable();

	} else {

#if (HD_DELAY > 0)

		last_req = read_timer();
@@ -541,8 +540,7 @@ static void hd_times_out(unsigned long dummy) 
	if (!CURRENT)

		return;



	disable_irq(HD_IRQ);

	local_irq_enable();

	spin_lock_irq(hd_queue->queue_lock);

	reset = 1;

	name = CURRENT->rq_disk->disk_name;

	printk("%s: timeout\n", name);
@@ -552,9 +550,8 @@ static void hd_times_out(unsigned long dummy) 
#endif

		end_request(CURRENT, 0);

	}

	local_irq_disable();

	hd_request();

	enable_irq(HD_IRQ);

	spin_unlock_irq(hd_queue->queue_lock);

}



static int do_special_op(struct hd_i_struct *disk, struct request *req)
@@ -592,7 +589,6 @@ static void hd_request(void) 
		return;

repeat:

	del_timer(&device_timer);

	local_irq_enable();



	req = CURRENT;

	if (!req) {
@@ -601,7 +597,6 @@ repeat: 
	}



	if (reset) {

		local_irq_disable();

		reset_hd();

		return;

	}
@@ -660,9 +655,7 @@ repeat: 


static void do_hd_request(struct request_queue *q)

{

	disable_irq(HD_IRQ);

	hd_request();

	enable_irq(HD_IRQ);

}



static int hd_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -684,12 +677,16 @@ static irqreturn_t hd_interrupt(int irq, void *dev_id) 
{

	void (*handler)(void) = do_hd;



	spin_lock(hd_queue->queue_lock);



	do_hd = NULL;

	del_timer(&device_timer);

	if (!handler)

		handler = unexpected_hd_interrupt;

	handler();

	local_irq_enable();



	spin_unlock(hd_queue->queue_lock);



	return IRQ_HANDLED;

}

drivers/block/mg_disk.c

+14 −5
Original line number Diff line number Diff line
@@ -79,7 +79,7 @@ static void mg_dump_status(const char *msg, unsigned int stat, 
			if (host->breq) {

				req = elv_next_request(host->breq);

				if (req)

					printk(", sector=%ld", req->sector);

					printk(", sector=%u", (u32)req->sector);

			}



		}
@@ -160,11 +160,16 @@ static irqreturn_t mg_irq(int irq, void *dev_id) 
	struct mg_host *host = dev_id;

	void (*handler)(struct mg_host *) = host->mg_do_intr;



	host->mg_do_intr = 0;

	spin_lock(&host->lock);



	host->mg_do_intr = NULL;

	del_timer(&host->timer);

	if (!handler)

		handler = mg_unexpected_intr;

	handler(host);



	spin_unlock(&host->lock);



	return IRQ_HANDLED;

}
@@ -319,7 +324,7 @@ static void mg_read(struct request *req) 


	remains = req->nr_sectors;



	if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_RD, 0) !=

	if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_RD, NULL) !=

			MG_ERR_NONE)

		mg_bad_rw_intr(host);
@@ -363,7 +368,7 @@ static void mg_write(struct request *req) 


	remains = req->nr_sectors;



	if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_WR, 0) !=

	if (mg_out(host, req->sector, req->nr_sectors, MG_CMD_WR, NULL) !=

			MG_ERR_NONE) {

		mg_bad_rw_intr(host);

		return;
@@ -521,9 +526,11 @@ void mg_times_out(unsigned long data) 
	char *name;

	struct request *req;



	spin_lock_irq(&host->lock);



	req = elv_next_request(host->breq);

	if (!req)

		return;

		goto out_unlock;



	host->mg_do_intr = NULL;
@@ -534,6 +541,8 @@ void mg_times_out(unsigned long data) 
	mg_bad_rw_intr(host);



	mg_request(host->breq);

out_unlock:

	spin_unlock_irq(&host->lock);

}



static void mg_request_poll(struct request_queue *q)

fs/bio.c

+3 −0
Original line number Diff line number Diff line
@@ -817,6 +817,9 @@ struct bio *bio_copy_user_iov(struct request_queue *q, 
		len += iov[i].iov_len;

	}



	if (offset)

		nr_pages++;



	bmd = bio_alloc_map_data(nr_pages, iov_count, gfp_mask);

	if (!bmd)

		return ERR_PTR(-ENOMEM);