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authorChristoph Hellwig <hch@lst.de>2023-06-08 13:02:43 +0200
committerJens Axboe <axboe@kernel.dk>2023-06-12 08:04:04 -0600
commit2736e8eeb0ccdc71d1f4256c9c9a28f58cc43307 (patch)
tree756552135a5496bd16f644aad640a9e955d903b4 /block/genhd.c
parent2ef789288afd365f4245ba97e56189062de5148e (diff)
block: use the holder as indication for exclusive opens
The current interface for exclusive opens is rather confusing as it requires both the FMODE_EXCL flag and a holder. Remove the need to pass FMODE_EXCL and just key off the exclusive open off a non-NULL holder. For blkdev_put this requires adding the holder argument, which provides better debug checking that only the holder actually releases the hold, but at the same time allows removing the now superfluous mode argument. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Christian Brauner <brauner@kernel.org> Acked-by: David Sterba <dsterba@suse.com> [btrfs] Acked-by: Jack Wang <jinpu.wang@ionos.com> [rnbd] Link: https://lore.kernel.org/r/20230608110258.189493-16-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 4e5fd6aaa883..b56f8b5c88b3 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -365,12 +365,11 @@ int disk_scan_partitions(struct gendisk *disk, fmode_t mode)
}
set_bit(GD_NEED_PART_SCAN, &disk->state);
- bdev = blkdev_get_by_dev(disk_devt(disk), mode & ~FMODE_EXCL, NULL,
- NULL);
+ bdev = blkdev_get_by_dev(disk_devt(disk), mode, NULL, NULL);
if (IS_ERR(bdev))
ret = PTR_ERR(bdev);
else
- blkdev_put(bdev, mode & ~FMODE_EXCL);
+ blkdev_put(bdev, NULL);
/*
* If blkdev_get_by_dev() failed early, GD_NEED_PART_SCAN is still set,