diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-05-02 16:00:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-25 17:28:40 +0300 |
| commit | 0f40eb57741a6f48ecd91585fce375562239459a (patch) | |
| tree | e2891ab7874dcaaa654ab4ac14e4fba5d893d654 | |
| parent | eb7561517b07bd7b447e12f3afb95f96878e0cb1 (diff) | |
| download | linux-0f40eb57741a6f48ecd91585fce375562239459a.tar.xz | |
block: add a disk_has_partscan helper
commit 140ce28dd3bee8e53acc27f123ae474d69ef66f0 upstream.
Add a helper to check if partition scanning is enabled instead of
open coding the check in a few places. This now always checks for
the hidden flag even if all but one of the callers are never reachable
for hidden gendisks.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240502130033.1958492-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | block/genhd.c | 7 | ||||
| -rw-r--r-- | block/partitions/core.c | 5 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 13 |
3 files changed, 16 insertions, 9 deletions
diff --git a/block/genhd.c b/block/genhd.c index d74fb5b4ae68..29e26e46b8fb 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -345,9 +345,7 @@ int disk_scan_partitions(struct gendisk *disk, blk_mode_t mode) struct bdev_handle *handle; int ret = 0; - if (disk->flags & (GENHD_FL_NO_PART | GENHD_FL_HIDDEN)) - return -EINVAL; - if (test_bit(GD_SUPPRESS_PART_SCAN, &disk->state)) + if (!disk_has_partscan(disk)) return -EINVAL; if (disk->open_partitions) return -EBUSY; @@ -503,8 +501,7 @@ int __must_check device_add_disk(struct device *parent, struct gendisk *disk, goto out_unregister_bdi; /* Make sure the first partition scan will be proceed */ - if (get_capacity(disk) && !(disk->flags & GENHD_FL_NO_PART) && - !test_bit(GD_SUPPRESS_PART_SCAN, &disk->state)) + if (get_capacity(disk) && disk_has_partscan(disk)) set_bit(GD_NEED_PART_SCAN, &disk->state); bdev_add(disk->part0, ddev->devt); diff --git a/block/partitions/core.c b/block/partitions/core.c index 5f5ed5c75f04..eac887755f4f 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -584,10 +584,7 @@ static int blk_add_partitions(struct gendisk *disk) struct parsed_partitions *state; int ret = -EAGAIN, p; - if (disk->flags & GENHD_FL_NO_PART) - return 0; - - if (test_bit(GD_SUPPRESS_PART_SCAN, &disk->state)) + if (!disk_has_partscan(disk)) return 0; state = check_partition(disk); diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index b43ca3b9d2a2..6ee8e7d7383c 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -233,6 +233,19 @@ static inline unsigned int disk_openers(struct gendisk *disk) return atomic_read(&disk->part0->bd_openers); } +/** + * disk_has_partscan - return %true if partition scanning is enabled on a disk + * @disk: disk to check + * + * Returns %true if partitions scanning is enabled for @disk, or %false if + * partition scanning is disabled either permanently or temporarily. + */ +static inline bool disk_has_partscan(struct gendisk *disk) +{ + return !(disk->flags & (GENHD_FL_NO_PART | GENHD_FL_HIDDEN)) && + !test_bit(GD_SUPPRESS_PART_SCAN, &disk->state); +} + /* * The gendisk is refcounted by the part0 block_device, and the bd_device * therein is also used for device model presentation in sysfs. |