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authorChristoph Hellwig <hch@lst.de>2021-04-06 08:23:00 +0200
committerJens Axboe <axboe@kernel.dk>2021-04-08 10:24:36 -0600
commitecc75a98b89917f18f295e154cd0bf056481c48f (patch)
treec0181ef658af661b5d7334497ecc4e6992d407a5 /block/genhd.c
parente559f58d20dbcc0b541552ac6b5cbab29c964d6a (diff)
block: simplify show_partition
Just use xa_for_each to iterate over the partitions as there is no need to grab a reference to each partition. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210406062303.811835-10-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/genhd.c')
-rw-r--r--block/genhd.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/block/genhd.c b/block/genhd.c
index 409ff4710f92..5726714ef82f 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -907,8 +907,8 @@ static void *show_partition_start(struct seq_file *seqf, loff_t *pos)
static int show_partition(struct seq_file *seqf, void *v)
{
struct gendisk *sgp = v;
- struct disk_part_iter piter;
struct block_device *part;
+ unsigned long idx;
char buf[BDEVNAME_SIZE];
/* Don't show non-partitionable removeable devices or empty devices */
@@ -918,15 +918,16 @@ static int show_partition(struct seq_file *seqf, void *v)
if (sgp->flags & GENHD_FL_SUPPRESS_PARTITION_INFO)
return 0;
- /* show the full disk and all non-0 size partitions of it */
- disk_part_iter_init(&piter, sgp, DISK_PITER_INCL_PART0);
- while ((part = disk_part_iter_next(&piter)))
+ rcu_read_lock();
+ xa_for_each(&sgp->part_tbl, idx, part) {
+ if (!bdev_nr_sectors(part))
+ continue;
seq_printf(seqf, "%4d %7d %10llu %s\n",
MAJOR(part->bd_dev), MINOR(part->bd_dev),
bdev_nr_sectors(part) >> 1,
disk_name(sgp, part->bd_partno, buf));
- disk_part_iter_exit(&piter);
-
+ }
+ rcu_read_unlock();
return 0;
}