block: disable sysfs parts of the disk command filter

We still have life time issues with the sysfs command filter kobject,
so disable it for 2.6.27 release. We can revisit this and make it work
properly for 2.6.28, for 2.6.27 release it's too risky.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

5 files changed, 2 insertions, 8 deletions

diff --git a/block/cmd-filter.c b/block/cmd-filter.c
index 228b644..79c1499 100644
--- a/block/cmd-filter.c
+++ b/block/cmd-filter.c
@@ -49,6 +49,7 @@ int blk_verify_command(struct blk_cmd_filter *filter,
 }
 EXPORT_SYMBOL(blk_verify_command);
 
+#if 0
 /* and now, the sysfs stuff */
 static ssize_t rcf_cmds_show(struct blk_cmd_filter *filter, char *page,
 			     int rw)
@@ -233,3 +234,4 @@ void blk_unregister_filter(struct gendisk *disk)
 	kobject_put(disk->holder_dir->parent);
 }
 EXPORT_SYMBOL(blk_unregister_filter);
+#endif
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index f148999..49a8c58 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -1933,7 +1933,6 @@ static void ide_cd_remove(ide_drive_t *drive)
 
 	ide_proc_unregister_driver(drive, info->driver);
 
-	blk_unregister_filter(info->disk);
 	del_gendisk(info->disk);
 
 	ide_cd_put(info);
@@ -2159,7 +2158,6 @@ static int ide_cd_probe(ide_drive_t *drive)
 	g->fops = &idecd_ops;
 	g->flags |= GENHD_FL_REMOVABLE;
 	add_disk(g);
-	blk_register_filter(g);
 	return 0;
 
 out_free_cd:
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 2a2bc89..e5e7d78 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1875,7 +1875,6 @@ static int sd_probe(struct device *dev)
 
 	dev_set_drvdata(dev, sdkp);
 	add_disk(gd);
-	blk_register_filter(gd);
 	sd_dif_config_host(sdkp);
 
 	sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n",
@@ -1909,7 +1908,6 @@ static int sd_remove(struct device *dev)
 	struct scsi_disk *sdkp = dev_get_drvdata(dev);
 
 	device_del(&sdkp->dev);
-	blk_unregister_filter(sdkp->disk);
 	del_gendisk(sdkp->disk);
 	sd_shutdown(dev);
 
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 3292965..27f5bfd 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -656,7 +656,6 @@ static int sr_probe(struct device *dev)
 	dev_set_drvdata(dev, cd);
 	disk->flags |= GENHD_FL_REMOVABLE;
 	add_disk(disk);
-	blk_register_filter(disk);
 
 	sdev_printk(KERN_DEBUG, sdev,
 		    "Attached scsi CD-ROM %s\n", cd->cdi.name);
@@ -895,7 +894,6 @@ static int sr_remove(struct device *dev)
 {
 	struct scsi_cd *cd = dev_get_drvdata(dev);
 
-	blk_unregister_filter(cd->disk);
 	del_gendisk(cd->disk);
 
 	mutex_lock(&sr_ref_mutex);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 44710d7..53ea933 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -843,8 +843,6 @@ extern int blkdev_issue_flush(struct block_device *, sector_t *);
 */
 extern int blk_verify_command(struct blk_cmd_filter *filter,
 			      unsigned char *cmd, int has_write_perm);
-extern int blk_register_filter(struct gendisk *disk);
-extern void blk_unregister_filter(struct gendisk *disk);
 extern void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter);
 
 #define MAX_PHYS_SEGMENTS 128