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authorMartin K. Petersen <martin.petersen@oracle.com>2009-05-22 17:17:50 -0400
committerJens Axboe <jens.axboe@oracle.com>2009-05-22 17:22:54 -0400
commitae03bf639a5027d27270123f5f6e3ee6a412781d (patch)
treed705f41a188ad656b1f47f7952626a9f992e3b8f /drivers/scsi/sg.c
parente1defc4ff0cf57aca6c5e3ff99fa503f5943c1f1 (diff)
block: Use accessor functions for queue limits
Convert all external users of queue limits to using wrapper functions instead of poking the request queue variables directly. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/scsi/sg.c')
-rw-r--r--drivers/scsi/sg.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 0fc2c0ae7691..9bd407fa98e4 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -289,8 +289,8 @@ sg_open(struct inode *inode, struct file *filp)
289 if (list_empty(&sdp->sfds)) { /* no existing opens on this device */ 289 if (list_empty(&sdp->sfds)) { /* no existing opens on this device */
290 sdp->sgdebug = 0; 290 sdp->sgdebug = 0;
291 q = sdp->device->request_queue; 291 q = sdp->device->request_queue;
292 sdp->sg_tablesize = min(q->max_hw_segments, 292 sdp->sg_tablesize = min(queue_max_hw_segments(q),
293 q->max_phys_segments); 293 queue_max_phys_segments(q));
294 } 294 }
295 if ((sfp = sg_add_sfp(sdp, dev))) 295 if ((sfp = sg_add_sfp(sdp, dev)))
296 filp->private_data = sfp; 296 filp->private_data = sfp;
@@ -909,7 +909,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
909 if (val < 0) 909 if (val < 0)
910 return -EINVAL; 910 return -EINVAL;
911 val = min_t(int, val, 911 val = min_t(int, val,
912 sdp->device->request_queue->max_sectors * 512); 912 queue_max_sectors(sdp->device->request_queue) * 512);
913 if (val != sfp->reserve.bufflen) { 913 if (val != sfp->reserve.bufflen) {
914 if (sg_res_in_use(sfp) || sfp->mmap_called) 914 if (sg_res_in_use(sfp) || sfp->mmap_called)
915 return -EBUSY; 915 return -EBUSY;
@@ -919,7 +919,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
919 return 0; 919 return 0;
920 case SG_GET_RESERVED_SIZE: 920 case SG_GET_RESERVED_SIZE:
921 val = min_t(int, sfp->reserve.bufflen, 921 val = min_t(int, sfp->reserve.bufflen,
922 sdp->device->request_queue->max_sectors * 512); 922 queue_max_sectors(sdp->device->request_queue) * 512);
923 return put_user(val, ip); 923 return put_user(val, ip);
924 case SG_SET_COMMAND_Q: 924 case SG_SET_COMMAND_Q:
925 result = get_user(val, ip); 925 result = get_user(val, ip);
@@ -1059,7 +1059,7 @@ sg_ioctl(struct inode *inode, struct file *filp,
1059 return -ENODEV; 1059 return -ENODEV;
1060 return scsi_ioctl(sdp->device, cmd_in, p); 1060 return scsi_ioctl(sdp->device, cmd_in, p);
1061 case BLKSECTGET: 1061 case BLKSECTGET:
1062 return put_user(sdp->device->request_queue->max_sectors * 512, 1062 return put_user(queue_max_sectors(sdp->device->request_queue) * 512,
1063 ip); 1063 ip);
1064 case BLKTRACESETUP: 1064 case BLKTRACESETUP:
1065 return blk_trace_setup(sdp->device->request_queue, 1065 return blk_trace_setup(sdp->device->request_queue,
@@ -1377,7 +1377,8 @@ static Sg_device *sg_alloc(struct gendisk *disk, struct scsi_device *scsidp)
1377 sdp->device = scsidp; 1377 sdp->device = scsidp;
1378 INIT_LIST_HEAD(&sdp->sfds); 1378 INIT_LIST_HEAD(&sdp->sfds);
1379 init_waitqueue_head(&sdp->o_excl_wait); 1379 init_waitqueue_head(&sdp->o_excl_wait);
1380 sdp->sg_tablesize = min(q->max_hw_segments, q->max_phys_segments); 1380 sdp->sg_tablesize = min(queue_max_hw_segments(q),
1381 queue_max_phys_segments(q));
1381 sdp->index = k; 1382 sdp->index = k;
1382 kref_init(&sdp->d_ref); 1383 kref_init(&sdp->d_ref);
1383 1384
@@ -2055,7 +2056,7 @@ sg_add_sfp(Sg_device * sdp, int dev)
2055 sg_big_buff = def_reserved_size; 2056 sg_big_buff = def_reserved_size;
2056 2057
2057 bufflen = min_t(int, sg_big_buff, 2058 bufflen = min_t(int, sg_big_buff,
2058 sdp->device->request_queue->max_sectors * 512); 2059 queue_max_sectors(sdp->device->request_queue) * 512);
2059 sg_build_reserve(sfp, bufflen); 2060 sg_build_reserve(sfp, bufflen);
2060 SCSI_LOG_TIMEOUT(3, printk("sg_add_sfp: bufflen=%d, k_use_sg=%d\n", 2061 SCSI_LOG_TIMEOUT(3, printk("sg_add_sfp: bufflen=%d, k_use_sg=%d\n",
2061 sfp->reserve.bufflen, sfp->reserve.k_use_sg)); 2062 sfp->reserve.bufflen, sfp->reserve.k_use_sg));