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path: root/drivers/message/i2o/i2o_block.c
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Diffstat (limited to 'drivers/message/i2o/i2o_block.c')
-rw-r--r--drivers/message/i2o/i2o_block.c72
1 files changed, 42 insertions, 30 deletions
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index e39986a7827..6fc3866965d 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -51,7 +51,9 @@
*/
#include <linux/module.h>
+#include <linux/slab.h>
#include <linux/i2o.h>
+#include <linux/mutex.h>
#include <linux/mempool.h>
@@ -67,6 +69,7 @@
#define OSM_VERSION "1.325"
#define OSM_DESCRIPTION "I2O Block Device OSM"
+static DEFINE_MUTEX(i2o_block_mutex);
static struct i2o_driver i2o_block_driver;
/* global Block OSM request mempool */
@@ -306,7 +309,7 @@ static inline void i2o_block_request_free(struct i2o_block_request *ireq)
* @ireq: I2O block request
* @mptr: message body pointer
*
- * Builds the SG list and map it to be accessable by the controller.
+ * Builds the SG list and map it to be accessible by the controller.
*
* Returns 0 on failure or 1 on success.
*/
@@ -576,6 +579,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode)
if (!dev->i2o_dev)
return -ENODEV;
+ mutex_lock(&i2o_block_mutex);
if (dev->power > 0x1f)
i2o_block_device_power(dev, 0x02);
@@ -584,6 +588,7 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode)
i2o_block_device_lock(dev->i2o_dev, -1);
osm_debug("Ready.\n");
+ mutex_unlock(&i2o_block_mutex);
return 0;
};
@@ -595,25 +600,24 @@ static int i2o_block_open(struct block_device *bdev, fmode_t mode)
*
* Unlock and unmount the media, and power down the device. Gets called if
* the block device is closed.
- *
- * Returns 0 on success or negative error code on failure.
*/
-static int i2o_block_release(struct gendisk *disk, fmode_t mode)
+static void i2o_block_release(struct gendisk *disk, fmode_t mode)
{
struct i2o_block_device *dev = disk->private_data;
u8 operation;
/*
- * This is to deail with the case of an application
- * opening a device and then the device dissapears while
+ * This is to deal with the case of an application
+ * opening a device and then the device disappears while
* it's in use, and then the application tries to release
* it. ex: Unmounting a deleted RAID volume at reboot.
* If we send messages, it will just cause FAILs since
* the TID no longer exists.
*/
if (!dev->i2o_dev)
- return 0;
+ return;
+ mutex_lock(&i2o_block_mutex);
i2o_block_device_flush(dev->i2o_dev);
i2o_block_device_unlock(dev->i2o_dev, -1);
@@ -624,8 +628,7 @@ static int i2o_block_release(struct gendisk *disk, fmode_t mode)
operation = 0x24;
i2o_block_device_power(dev, operation);
-
- return 0;
+ mutex_unlock(&i2o_block_mutex);
}
static int i2o_block_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -651,54 +654,66 @@ static int i2o_block_ioctl(struct block_device *bdev, fmode_t mode,
{
struct gendisk *disk = bdev->bd_disk;
struct i2o_block_device *dev = disk->private_data;
+ int ret = -ENOTTY;
/* Anyone capable of this syscall can do *real bad* things */
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+ mutex_lock(&i2o_block_mutex);
switch (cmd) {
case BLKI2OGRSTRAT:
- return put_user(dev->rcache, (int __user *)arg);
+ ret = put_user(dev->rcache, (int __user *)arg);
+ break;
case BLKI2OGWSTRAT:
- return put_user(dev->wcache, (int __user *)arg);
+ ret = put_user(dev->wcache, (int __user *)arg);
+ break;
case BLKI2OSRSTRAT:
+ ret = -EINVAL;
if (arg < 0 || arg > CACHE_SMARTFETCH)
- return -EINVAL;
+ break;
dev->rcache = arg;
+ ret = 0;
break;
case BLKI2OSWSTRAT:
+ ret = -EINVAL;
if (arg != 0
&& (arg < CACHE_WRITETHROUGH || arg > CACHE_SMARTBACK))
- return -EINVAL;
+ break;
dev->wcache = arg;
+ ret = 0;
break;
}
- return -ENOTTY;
+ mutex_unlock(&i2o_block_mutex);
+
+ return ret;
};
/**
- * i2o_block_media_changed - Have we seen a media change?
+ * i2o_block_check_events - Have we seen a media change?
* @disk: gendisk which should be verified
+ * @clearing: events being cleared
*
* Verifies if the media has changed.
*
* Returns 1 if the media was changed or 0 otherwise.
*/
-static int i2o_block_media_changed(struct gendisk *disk)
+static unsigned int i2o_block_check_events(struct gendisk *disk,
+ unsigned int clearing)
{
struct i2o_block_device *p = disk->private_data;
if (p->media_change_flag) {
p->media_change_flag = 0;
- return 1;
+ return DISK_EVENT_MEDIA_CHANGE;
}
return 0;
}
/**
* i2o_block_transfer - Transfer a request to/from the I2O controller
- * @req: the request which should be transfered
+ * @req: the request which should be transferred
*
* This function converts the request into a I2O message. The necessary
* DMA buffers are allocated and after everything is setup post the message
@@ -711,7 +726,7 @@ static int i2o_block_transfer(struct request *req)
{
struct i2o_block_device *dev = req->rq_disk->private_data;
struct i2o_controller *c;
- u32 tid = dev->i2o_dev->lct_data.tid;
+ u32 tid;
struct i2o_message *msg;
u32 *mptr;
struct i2o_block_request *ireq = req->special;
@@ -727,6 +742,7 @@ static int i2o_block_transfer(struct request *req)
goto exit;
}
+ tid = dev->i2o_dev->lct_data.tid;
c = dev->i2o_dev->iop;
msg = i2o_msg_get(c);
@@ -877,12 +893,8 @@ static void i2o_block_request_fn(struct request_queue *q)
{
struct request *req;
- while (!blk_queue_plugged(q)) {
- req = blk_peek_request(q);
- if (!req)
- break;
-
- if (blk_fs_request(req)) {
+ while ((req = blk_peek_request(q)) != NULL) {
+ if (req->cmd_type == REQ_TYPE_FS) {
struct i2o_block_delayed_request *dreq;
struct i2o_block_request *ireq = req->special;
unsigned int queue_depth;
@@ -929,9 +941,10 @@ static const struct block_device_operations i2o_block_fops = {
.owner = THIS_MODULE,
.open = i2o_block_open,
.release = i2o_block_release,
- .locked_ioctl = i2o_block_ioctl,
+ .ioctl = i2o_block_ioctl,
+ .compat_ioctl = i2o_block_ioctl,
.getgeo = i2o_block_getgeo,
- .media_changed = i2o_block_media_changed
+ .check_events = i2o_block_check_events,
};
/**
@@ -1065,9 +1078,8 @@ static int i2o_block_probe(struct device *dev)
queue = gd->queue;
queue->queuedata = i2o_blk_dev;
- blk_queue_max_phys_segments(queue, I2O_MAX_PHYS_SEGMENTS);
- blk_queue_max_sectors(queue, max_sectors);
- blk_queue_max_hw_segments(queue, i2o_sg_tablesize(c, body_size));
+ blk_queue_max_hw_sectors(queue, max_sectors);
+ blk_queue_max_segments(queue, i2o_sg_tablesize(c, body_size));
osm_debug("max sectors = %d\n", queue->max_sectors);
osm_debug("phys segments = %d\n", queue->max_phys_segments);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 10:27:49 +0000