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block: merge invalidate_partitions into rescan_partitions

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A lot of the logic in invalidate_partitions and rescan_partitions is
shared.  Merge the two functions to simplify things.  There is a small
behavior change in that we now send the kevent change notice also if we
were not invalidating but no partitions were found, which seems like
the right thing to do.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2019-11-14 15:34:33 +01:00
committed by Jens Axboe
parent f902b02600
commit 6917d06899
4 changed files with 18 additions and 31 deletions
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4
include/linux/genhd.h
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@@ -622,8 +622,8 @@ extern dev_t blk_lookup_devt(const char *name, int partno);
extern char *disk_name (struct gendisk *hd, int partno, char *buf);
extern int disk_expand_part_tbl(struct gendisk *disk, int target);
extern int rescan_partitions(struct gendisk *disk, struct block_device *bdev);
extern int invalidate_partitions(struct gendisk *disk, struct block_device *bdev);
int rescan_partitions(struct gendisk *disk, struct block_device *bdev,
bool invalidate);
extern struct hd_struct * __must_check add_partition(struct gendisk *disk,
int partno, sector_t start,
sector_t len, int flags,