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authorTejun Heo <tj@kernel.org>2011-08-23 20:01:04 +0200
committerJens Axboe <jaxboe@fusionio.com>2011-08-23 20:01:04 +0200
commitd27769ec3df1a8de9ca450d2dcd72d1ab259ba32 (patch)
treef17c064e0d8ac26fa80c1c72dccaca053bb55e94 /block/genhd.c
parent322a8b034003c0d46d39af85bf24fee27b902f48 (diff)
downloadkernel-d27769ec3df1a8de9ca450d2dcd72d1ab259ba32.tar.gz
block: add GENHD_FL_NO_PART_SCAN
There are cases where suppressing partition scan is useful - e.g. for lo devices and pseudo SATA devices which advertise to be a disk but get upset on partition scan (some port multiplier control devices show such behavior). This patch adds GENHD_FL_NO_PART_SCAN which suppresses partition scan regardless of the number of possible partitions. disk_partitionable() is renamed to disk_part_scan_enabled() as suppressing partition scan doesn't imply the device can't be partitioned using BLKPG_ADD/DEL_PARTITION calls from userland. show_partition() now directly tests disk_max_parts() to maintain backward-compatibility. -v2: Updated to make it clear that only partition scan is suppressed not partitioning itself as suggested by Kay Sievers. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 5cb51c55f6d8..2429ecbbd97d 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -536,7 +536,7 @@ void register_disk(struct gendisk *disk)
disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj);
/* No minors to use for partitions */
- if (!disk_partitionable(disk))
+ if (!disk_part_scan_enabled(disk))
goto exit;
/* No such device (e.g., media were just removed) */
@@ -841,7 +841,7 @@ static int show_partition(struct seq_file *seqf, void *v)
char buf[BDEVNAME_SIZE];
/* Don't show non-partitionable removeable devices or empty devices */
- if (!get_capacity(sgp) || (!disk_partitionable(sgp) &&
+ if (!get_capacity(sgp) || (!disk_max_parts(sgp) &&
(sgp->flags & GENHD_FL_REMOVABLE)))
return 0;
if (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO)