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block: switch partition lookup to use struct block_device

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Use struct block_device to lookup partitions on a disk.  This removes
all usage of struct hd_struct from the I/O path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: Coly Li <colyli@suse.de>			[bcache]
Acked-by: Chao Yu <yuchao0@huawei.com>			[f2fs]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2020-11-24 09:36:54 +01:00
committed by Jens Axboe
parent cb8432d650
commit 8446fe9255
22 changed files with 122 additions and 137 deletions
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20
drivers/nvme/target/admin-cmd.c
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@@ -89,12 +89,12 @@ static u16 nvmet_get_smart_log_nsid(struct nvmet_req *req,
if (!ns->bdev)
goto out;
host_reads = part_stat_read(ns->bdev->bd_part, ios[READ]);
data_units_read = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part,
sectors[READ]), 1000);
host_writes = part_stat_read(ns->bdev->bd_part, ios[WRITE]);
data_units_written = DIV_ROUND_UP(part_stat_read(ns->bdev->bd_part,
sectors[WRITE]), 1000);
host_reads = part_stat_read(ns->bdev, ios[READ]);
data_units_read =
DIV_ROUND_UP(part_stat_read(ns->bdev, sectors[READ]), 1000);
host_writes = part_stat_read(ns->bdev, ios[WRITE]);
data_units_written =
DIV_ROUND_UP(part_stat_read(ns->bdev, sectors[WRITE]), 1000);
put_unaligned_le64(host_reads, &slog->host_reads[0]);
put_unaligned_le64(data_units_read, &slog->data_units_read[0]);
@@ -120,12 +120,12 @@ static u16 nvmet_get_smart_log_all(struct nvmet_req *req,
/* we don't have the right data for file backed ns */
if (!ns->bdev)
continue;
host_reads += part_stat_read(ns->bdev->bd_part, ios[READ]);
host_reads += part_stat_read(ns->bdev, ios[READ]);
data_units_read += DIV_ROUND_UP(
part_stat_read(ns->bdev->bd_part, sectors[READ]), 1000);
host_writes += part_stat_read(ns->bdev->bd_part, ios[WRITE]);
part_stat_read(ns->bdev, sectors[READ]), 1000);
host_writes += part_stat_read(ns->bdev, ios[WRITE]);
data_units_written += DIV_ROUND_UP(
part_stat_read(ns->bdev->bd_part, sectors[WRITE]), 1000);
part_stat_read(ns->bdev, sectors[WRITE]), 1000);
}
put_unaligned_le64(host_reads, &slog->host_reads[0]);