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[SCSI] sg: cap reserved_size values at max_sectors
[powerpc.git]
/
block
/
scsi_ioctl.c
diff --git
a/block/scsi_ioctl.c
b/block/scsi_ioctl.c
index
5493c2f
..
e83f1db
100644
(file)
--- a/
block/scsi_ioctl.c
+++ b/
block/scsi_ioctl.c
@@
-78,7
+78,9
@@
static int sg_set_timeout(request_queue_t *q, int __user *p)
static int sg_get_reserved_size(request_queue_t *q, int __user *p)
{
static int sg_get_reserved_size(request_queue_t *q, int __user *p)
{
- return put_user(q->sg_reserved_size, p);
+ unsigned val = min(q->sg_reserved_size, q->max_sectors << 9);
+
+ return put_user(val, p);
}
static int sg_set_reserved_size(request_queue_t *q, int __user *p)
}
static int sg_set_reserved_size(request_queue_t *q, int __user *p)
@@
-223,11
+225,12
@@
static int verify_command(struct file *file, unsigned char *cmd)
static int sg_io(struct file *file, request_queue_t *q,
struct gendisk *bd_disk, struct sg_io_hdr *hdr)
{
static int sg_io(struct file *file, request_queue_t *q,
struct gendisk *bd_disk, struct sg_io_hdr *hdr)
{
- unsigned long start_time;
+ unsigned long start_time
, timeout
;
int writing = 0, ret = 0;
struct request *rq;
char sense[SCSI_SENSE_BUFFERSIZE];
unsigned char cmd[BLK_MAX_CDB];
int writing = 0, ret = 0;
struct request *rq;
char sense[SCSI_SENSE_BUFFERSIZE];
unsigned char cmd[BLK_MAX_CDB];
+ struct bio *bio;
if (hdr->interface_id != 'S')
return -EINVAL;
if (hdr->interface_id != 'S')
return -EINVAL;
@@
-270,14
+273,8
@@
static int sg_io(struct file *file, request_queue_t *q,
rq->cmd_type = REQ_TYPE_BLOCK_PC;
rq->cmd_type = REQ_TYPE_BLOCK_PC;
- /*
- * bounce this after holding a reference to the original bio, it's
- * needed for proper unmapping
- */
- if (rq->bio)
- blk_queue_bounce(q, &rq->bio);
-
- rq->timeout = (hdr->timeout * HZ) / 1000;
+ timeout = msecs_to_jiffies(hdr->timeout);
+ rq->timeout = (timeout < INT_MAX) ? timeout : INT_MAX;
if (!rq->timeout)
rq->timeout = q->sg_timeout;
if (!rq->timeout)
if (!rq->timeout)
rq->timeout = q->sg_timeout;
if (!rq->timeout)
@@
-308,6
+305,7
@@
static int sg_io(struct file *file, request_queue_t *q,
if (ret)
goto out;
if (ret)
goto out;
+ bio = rq->bio;
rq->retries = 0;
start_time = jiffies;
rq->retries = 0;
start_time = jiffies;
@@
-338,7
+336,7
@@
static int sg_io(struct file *file, request_queue_t *q,
hdr->sb_len_wr = len;
}
hdr->sb_len_wr = len;
}
- if (blk_rq_unmap_user(
rq
))
+ if (blk_rq_unmap_user(
bio
))
ret = -EFAULT;
/* may not have succeeded, but output values written to control
ret = -EFAULT;
/* may not have succeeded, but output values written to control