From d27769ec3df1a8de9ca450d2dcd72d1ab259ba32 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Tue, 23 Aug 2011 20:01:04 +0200 Subject: 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 Cc: Kay Sievers Signed-off-by: Jens Axboe --- fs/block_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs') diff --git a/fs/block_dev.c b/fs/block_dev.c index ff77262e887..0bed0d4588d 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -971,7 +971,7 @@ static void flush_disk(struct block_device *bdev, bool kill_dirty) if (!bdev->bd_disk) return; - if (disk_partitionable(bdev->bd_disk)) + if (disk_part_scan_enabled(bdev->bd_disk)) bdev->bd_invalidated = 1; } -- cgit v1.2.3-18-g5258