[PATCH 07/10] block: don't call invalidate_partition from blk_drop_partitions

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Given that the device must not be busy, most of the calls from
invalidate_partition that are related to file system metadata are
guranteed to not happen.  Just open code the calls to sync_blockdev
and invalidate_bdev instead.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 block/partitions/core.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/block/partitions/core.c b/block/partitions/core.c
index 8a41c25022ab..3fe383adb42a 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -607,15 +607,14 @@ int blk_drop_partitions(struct block_device *bdev)
 {
 	struct disk_part_iter piter;
 	struct hd_struct *part;
-	int res;
 
 	if (!disk_part_scan_enabled(bdev->bd_disk))
 		return 0;
 	if (bdev->bd_part_count || bdev->bd_openers)
 		return -EBUSY;
-	res = invalidate_partition(bdev->bd_disk, 0);
-	if (res)
-		return res;
+
+	sync_blockdev(bdev);
+	invalidate_bdev(bdev);
 
 	disk_part_iter_init(&piter, bdev->bd_disk, DISK_PITER_INCL_EMPTY);
 	while ((part = disk_part_iter_next(&piter)))
-- 
2.25.1




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