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block: Consolidate phys_segment and hw_segment limits

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Except for SCSI no device drivers distinguish between physical and
hardware segment limits.  Consolidate the two into a single segment
limit.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Martin K. Petersen
2010-02-26 00:20:39 -05:00
committed by Jens Axboe
parent 086fa5ff08
commit 8a78362c4e
35 changed files with 70 additions and 136 deletions
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6
drivers/scsi/sg.c
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@@ -287,8 +287,7 @@ sg_open(struct inode *inode, struct file *filp)
if (list_empty(&sdp->sfds)) { /* no existing opens on this device */
sdp->sgdebug = 0;
q = sdp->device->request_queue;
sdp->sg_tablesize = min(queue_max_hw_segments(q),
queue_max_phys_segments(q));
sdp->sg_tablesize = queue_max_segments(q);
}
if ((sfp = sg_add_sfp(sdp, dev)))
filp->private_data = sfp;
@@ -1376,8 +1375,7 @@ static Sg_device *sg_alloc(struct gendisk *disk, struct scsi_device *scsidp)
sdp->device = scsidp;
INIT_LIST_HEAD(&sdp->sfds);
init_waitqueue_head(&sdp->o_excl_wait);
sdp->sg_tablesize = min(queue_max_hw_segments(q),
queue_max_phys_segments(q));
sdp->sg_tablesize = queue_max_segments(q);
sdp->index = k;
kref_init(&sdp->d_ref);