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authorChristoph Hellwig <hch@lst.de>2021-04-06 08:23:02 +0200
committerJens Axboe <axboe@kernel.dk>2021-04-08 10:24:36 -0600
commit3212135a718b06be38811f2d9a320ae842e76409 (patch)
treed492daa0bc5b37aafbf88f31753420af6ac4628e
parent7fae67cc9c0e0645e8c82156ba3a8bb7bae995bb (diff)
block: remove disk_part_iter
Just open code the xa_for_each in the remaining user. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210406062303.811835-12-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--block/genhd.c92
-rw-r--r--include/linux/genhd.h19
2 files changed, 13 insertions, 98 deletions
diff --git a/block/genhd.c b/block/genhd.c
index cbfe1ff19360..39ca97b0edc6 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -161,81 +161,6 @@ static void part_in_flight_rw(struct block_device *part,
inflight[1] = 0;
}
-/**
- * disk_part_iter_init - initialize partition iterator
- * @piter: iterator to initialize
- * @disk: disk to iterate over
- * @flags: DISK_PITER_* flags
- *
- * Initialize @piter so that it iterates over partitions of @disk.
- *
- * CONTEXT:
- * Don't care.
- */
-void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk,
- unsigned int flags)
-{
- piter->disk = disk;
- piter->part = NULL;
- if (flags & (DISK_PITER_INCL_PART0 | DISK_PITER_INCL_EMPTY_PART0))
- piter->idx = 0;
- else
- piter->idx = 1;
- piter->flags = flags;
-}
-
-/**
- * disk_part_iter_next - proceed iterator to the next partition and return it
- * @piter: iterator of interest
- *
- * Proceed @piter to the next partition and return it.
- *
- * CONTEXT:
- * Don't care.
- */
-struct block_device *disk_part_iter_next(struct disk_part_iter *piter)
-{
- struct block_device *part;
- unsigned long idx;
-
- /* put the last partition */
- disk_part_iter_exit(piter);
-
- rcu_read_lock();
- xa_for_each_start(&piter->disk->part_tbl, idx, part, piter->idx) {
- if (!bdev_nr_sectors(part) &&
- !(piter->flags & DISK_PITER_INCL_EMPTY) &&
- !(piter->flags & DISK_PITER_INCL_EMPTY_PART0 &&
- piter->idx == 0))
- continue;
-
- piter->part = bdgrab(part);
- if (!piter->part)
- continue;
- piter->idx = idx + 1;
- break;
- }
- rcu_read_unlock();
-
- return piter->part;
-}
-
-/**
- * disk_part_iter_exit - finish up partition iteration
- * @piter: iter of interest
- *
- * Called when iteration is over. Cleans up @piter.
- *
- * CONTEXT:
- * Don't care.
- */
-void disk_part_iter_exit(struct disk_part_iter *piter)
-{
- if (piter->part)
- bdput(piter->part);
- piter->part = NULL;
-}
-
/*
* Can be deleted altogether. Later.
*
@@ -472,13 +397,22 @@ static char *bdevt_str(dev_t devt, char *buf)
void disk_uevent(struct gendisk *disk, enum kobject_action action)
{
- struct disk_part_iter piter;
struct block_device *part;
+ unsigned long idx;
+
+ rcu_read_lock();
+ xa_for_each(&disk->part_tbl, idx, part) {
+ if (bdev_is_partition(part) && !bdev_nr_sectors(part))
+ continue;
+ if (!bdgrab(part))
+ continue;
- disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY_PART0);
- while ((part = disk_part_iter_next(&piter)))
+ rcu_read_unlock();
kobject_uevent(bdev_kobj(part), action);
- disk_part_iter_exit(&piter);
+ bdput(part);
+ rcu_read_lock();
+ }
+ rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(disk_uevent);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 16178a935c40..7e9660ea967d 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -204,25 +204,6 @@ static inline dev_t disk_devt(struct gendisk *disk)
void disk_uevent(struct gendisk *disk, enum kobject_action action);
-/*
- * Smarter partition iterator without context limits.
- */
-#define DISK_PITER_INCL_EMPTY (1 << 1) /* include 0-sized parts */
-#define DISK_PITER_INCL_PART0 (1 << 2) /* include partition 0 */
-#define DISK_PITER_INCL_EMPTY_PART0 (1 << 3) /* include empty partition 0 */
-
-struct disk_part_iter {
- struct gendisk *disk;
- struct block_device *part;
- unsigned long idx;
- unsigned int flags;
-};
-
-extern void disk_part_iter_init(struct disk_part_iter *piter,
- struct gendisk *disk, unsigned int flags);
-struct block_device *disk_part_iter_next(struct disk_part_iter *piter);
-extern void disk_part_iter_exit(struct disk_part_iter *piter);
-
/* block/genhd.c */
extern void device_add_disk(struct device *parent, struct gendisk *disk,
const struct attribute_group **groups);