From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-bcache@vger.kernel.org, Jan Kara <jack@suse.cz>,
Mike Snitzer <snitzer@redhat.com>,
linux-mm@kvack.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jan Kara <jack@suse.com>, Josef Bacik <josef@toxicpanda.com>,
Coly Li <colyli@suse.de>,
linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
dm-devel@redhat.com, linux-mtd@lists.infradead.org,
Johannes Thumshirn <johannes.thumshirn@wdc.com>,
Tejun Heo <tj@kernel.org>
Subject: [dm-devel] [PATCH 32/45] block: move the start_sect field to struct block_device
Date: Sat, 28 Nov 2020 17:14:57 +0100 [thread overview]
Message-ID: <20201128161510.347752-33-hch@lst.de> (raw)
In-Reply-To: <20201128161510.347752-1-hch@lst.de>
Move the start_sect field to struct block_device in preparation
of killing struct hd_struct.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
---
block/blk-core.c | 5 +++--
block/blk-lib.c | 2 +-
block/genhd.c | 4 ++--
block/partitions/core.c | 17 +++++++++--------
include/linux/blk_types.h | 1 +
include/linux/blkdev.h | 4 ++--
include/linux/genhd.h | 3 +--
kernel/trace/blktrace.c | 11 +++--------
8 files changed, 22 insertions(+), 25 deletions(-)
diff --git a/block/blk-core.c b/block/blk-core.c
index d2c9cb24e087f3..9a3793d5ce38d4 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -757,9 +757,10 @@ static inline int blk_partition_remap(struct bio *bio)
if (bio_sectors(bio)) {
if (bio_check_eod(bio, bdev_nr_sectors(p->bdev)))
goto out;
- bio->bi_iter.bi_sector += p->start_sect;
+ bio->bi_iter.bi_sector += p->bdev->bd_start_sect;
trace_block_bio_remap(bio->bi_disk->queue, bio, part_devt(p),
- bio->bi_iter.bi_sector - p->start_sect);
+ bio->bi_iter.bi_sector -
+ p->bdev->bd_start_sect);
}
bio->bi_partno = 0;
ret = 0;
diff --git a/block/blk-lib.c b/block/blk-lib.c
index e90614fd8d6a42..752f9c7220622a 100644
--- a/block/blk-lib.c
+++ b/block/blk-lib.c
@@ -65,7 +65,7 @@ int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
/* In case the discard request is in a partition */
if (bdev_is_partition(bdev))
- part_offset = bdev->bd_part->start_sect;
+ part_offset = bdev->bd_start_sect;
while (nr_sects) {
sector_t granularity_aligned_lba, req_sects;
diff --git a/block/genhd.c b/block/genhd.c
index 9eead2970cb3d4..7bb45382658385 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -297,8 +297,8 @@ EXPORT_SYMBOL_GPL(disk_part_iter_exit);
static inline int sector_in_part(struct hd_struct *part, sector_t sector)
{
- return part->start_sect <= sector &&
- sector < part->start_sect + bdev_nr_sectors(part->bdev);
+ return part->bdev->bd_start_sect <= sector &&
+ sector < part->bdev->bd_start_sect + bdev_nr_sectors(part->bdev);
}
/**
diff --git a/block/partitions/core.c b/block/partitions/core.c
index 8924e1ea8b2ad6..460a745812c6d4 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -192,7 +192,7 @@ static ssize_t part_start_show(struct device *dev,
{
struct hd_struct *p = dev_to_part(dev);
- return sprintf(buf, "%llu\n",(unsigned long long)p->start_sect);
+ return sprintf(buf, "%llu\n", p->bdev->bd_start_sect);
}
static ssize_t part_ro_show(struct device *dev,
@@ -209,7 +209,7 @@ static ssize_t part_alignment_offset_show(struct device *dev,
return sprintf(buf, "%u\n",
queue_limit_alignment_offset(&part_to_disk(p)->queue->limits,
- p->start_sect));
+ p->bdev->bd_start_sect));
}
static ssize_t part_discard_alignment_show(struct device *dev,
@@ -219,7 +219,7 @@ static ssize_t part_discard_alignment_show(struct device *dev,
return sprintf(buf, "%u\n",
queue_limit_discard_alignment(&part_to_disk(p)->queue->limits,
- p->start_sect));
+ p->bdev->bd_start_sect));
}
static DEVICE_ATTR(partition, 0444, part_partition_show, NULL);
@@ -301,7 +301,7 @@ static void hd_struct_free_work(struct work_struct *work)
*/
put_device(disk_to_dev(disk));
- part->start_sect = 0;
+ part->bdev->bd_start_sect = 0;
bdev_set_nr_sectors(part->bdev, 0);
part_stat_set_all(part, 0);
put_device(part_to_dev(part));
@@ -416,7 +416,7 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
pdev = part_to_dev(p);
- p->start_sect = start;
+ bdev->bd_start_sect = start;
bdev_set_nr_sectors(bdev, len);
p->partno = partno;
p->policy = get_disk_ro(disk);
@@ -508,8 +508,9 @@ static bool partition_overlaps(struct gendisk *disk, sector_t start,
disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY);
while ((part = disk_part_iter_next(&piter))) {
if (part->partno == skip_partno ||
- start >= part->start_sect + bdev_nr_sectors(part->bdev) ||
- start + length <= part->start_sect)
+ start >= part->bdev->bd_start_sect +
+ bdev_nr_sectors(part->bdev) ||
+ start + length <= part->bdev->bd_start_sect)
continue;
overlap = true;
break;
@@ -592,7 +593,7 @@ int bdev_resize_partition(struct block_device *bdev, int partno,
mutex_lock_nested(&bdev->bd_mutex, 1);
ret = -EINVAL;
- if (start != part->start_sect)
+ if (start != part->bdev->bd_start_sect)
goto out_unlock;
ret = -EBUSY;
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 520011b95276fb..a690008f60cd92 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -20,6 +20,7 @@ typedef void (bio_end_io_t) (struct bio *);
struct bio_crypt_ctx;
struct block_device {
+ sector_t bd_start_sect;
struct disk_stats __percpu *bd_stats;
unsigned long bd_stamp;
dev_t bd_dev;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 43a25d855e049a..619adea5709853 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1488,7 +1488,7 @@ static inline int bdev_alignment_offset(struct block_device *bdev)
return -1;
if (bdev_is_partition(bdev))
return queue_limit_alignment_offset(&q->limits,
- bdev->bd_part->start_sect);
+ bdev->bd_start_sect);
return q->limits.alignment_offset;
}
@@ -1529,7 +1529,7 @@ static inline int bdev_discard_alignment(struct block_device *bdev)
if (bdev_is_partition(bdev))
return queue_limit_discard_alignment(&q->limits,
- bdev->bd_part->start_sect);
+ bdev->bd_start_sect);
return q->limits.discard_alignment;
}
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 804ac45fbfbc53..50d27f5d38e2af 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -51,7 +51,6 @@ struct partition_meta_info {
};
struct hd_struct {
- sector_t start_sect;
struct percpu_ref ref;
struct block_device *bdev;
@@ -298,7 +297,7 @@ extern void rand_initialize_disk(struct gendisk *disk);
static inline sector_t get_start_sect(struct block_device *bdev)
{
- return bdev->bd_part->start_sect;
+ return bdev->bd_start_sect;
}
static inline sector_t bdev_nr_sectors(struct block_device *bdev)
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 7076d588a50d69..8a723a91ec5a06 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -458,14 +458,9 @@ static struct rchan_callbacks blk_relay_callbacks = {
static void blk_trace_setup_lba(struct blk_trace *bt,
struct block_device *bdev)
{
- struct hd_struct *part = NULL;
-
- if (bdev)
- part = bdev->bd_part;
-
- if (part) {
- bt->start_lba = part->start_sect;
- bt->end_lba = part->start_sect + bdev_nr_sectors(bdev);
+ if (bdev) {
+ bt->start_lba = bdev->bd_start_sect;
+ bt->end_lba = bdev->bd_start_sect + bdev_nr_sectors(bdev);
} else {
bt->start_lba = 0;
bt->end_lba = -1ULL;
--
2.29.2
--
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next prev parent reply other threads:[~2020-11-28 16:22 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-28 16:14 [dm-devel] merge struct block_device and struct hd_struct v4 Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 01/45] blk-cgroup: fix a hd_struct leak in blkcg_fill_root_iostats Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 02/45] filemap: consistently use ->f_mapping over ->i_mapping Christoph Hellwig
2020-11-30 9:20 ` Johannes Thumshirn
2020-11-28 16:14 ` [dm-devel] [PATCH 03/45] fs: remove get_super_thawed and get_super_exclusive_thawed Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 04/45] fs: simplify freeze_bdev/thaw_bdev Christoph Hellwig
2020-11-30 17:55 ` Darrick J. Wong
2020-11-28 16:14 ` [dm-devel] [PATCH 05/45] mtip32xx: remove the call to fsync_bdev on removal Christoph Hellwig
2020-11-30 7:07 ` Hannes Reinecke
2020-11-30 14:48 ` Johannes Thumshirn
2020-11-28 16:14 ` [dm-devel] [PATCH 06/45] zram: do not call set_blocksize Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 07/45] loop: " Christoph Hellwig
2020-11-30 7:07 ` Hannes Reinecke
2020-11-30 11:26 ` Johannes Thumshirn
2020-11-28 16:14 ` [dm-devel] [PATCH 08/45] dm: simplify flush_bio initialization in __send_empty_flush Christoph Hellwig
2020-11-30 7:08 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 09/45] dm: remove the block_device reference in struct mapped_device Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 10/45] block: remove a duplicate __disk_get_part prototype Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 11/45] block: remove a superflous check in blkpg_do_ioctl Christoph Hellwig
2020-11-30 9:20 ` Johannes Thumshirn
2020-11-28 16:14 ` [dm-devel] [PATCH 12/45] block: add a bdev_kobj helper Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 13/45] block: use disk_part_iter_exit in disk_part_iter_next Christoph Hellwig
2020-11-28 16:14 ` [dm-devel] [PATCH 14/45] block: use put_device in put_disk Christoph Hellwig
2020-11-30 7:09 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 15/45] block: change the hash used for looking up block devices Christoph Hellwig
2020-11-30 7:10 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 16/45] block: switch bdgrab to use igrab Christoph Hellwig
2020-11-30 7:14 ` Hannes Reinecke
2020-11-30 9:09 ` Jan Kara
2020-11-30 14:52 ` Johannes Thumshirn
2020-11-28 16:14 ` [dm-devel] [PATCH 17/45] init: refactor name_to_dev_t Christoph Hellwig
2020-11-30 7:15 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 18/45] init: refactor devt_from_partuuid Christoph Hellwig
2020-11-30 7:16 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 19/45] init: cleanup match_dev_by_uuid and match_dev_by_label Christoph Hellwig
2020-11-30 7:17 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 20/45] block: refactor __blkdev_put Christoph Hellwig
2020-11-30 7:17 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 21/45] block: refactor blkdev_get Christoph Hellwig
2020-11-30 7:28 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 22/45] block: move bdput() to the callers of __blkdev_get Christoph Hellwig
2020-11-30 7:29 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 23/45] block: opencode devcgroup_inode_permission Christoph Hellwig
2020-11-30 7:30 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 24/45] block: remove i_bdev Christoph Hellwig
2020-11-30 7:31 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 25/45] block: simplify bdev/disk lookup in blkdev_get Christoph Hellwig
2020-11-30 7:36 ` Hannes Reinecke
2020-11-30 9:24 ` Jan Kara
2020-12-02 21:52 ` Tejun Heo
2020-11-28 16:14 ` [dm-devel] [PATCH 26/45] block: remove ->bd_contains Christoph Hellwig
2020-11-30 7:37 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 27/45] block: simplify the block device claiming interface Christoph Hellwig
2020-11-30 7:37 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 28/45] block: simplify part_to_disk Christoph Hellwig
2020-11-30 7:38 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 29/45] block: initialize struct block_device in bdev_alloc Christoph Hellwig
2020-11-30 7:38 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 30/45] block: remove the nr_sects field in struct hd_struct Christoph Hellwig
2020-11-30 7:39 ` Hannes Reinecke
2020-11-30 9:44 ` Jan Kara
2020-11-30 14:51 ` Christoph Hellwig
2020-11-30 15:17 ` Jan Kara
2020-11-28 16:14 ` [dm-devel] [PATCH 31/45] block: move disk stat accounting to struct block_device Christoph Hellwig
2020-11-30 7:40 ` Hannes Reinecke
2020-11-28 16:14 ` Christoph Hellwig [this message]
2020-11-30 7:41 ` [dm-devel] [PATCH 32/45] block: move the start_sect field " Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 33/45] block: move the partition_meta_info " Christoph Hellwig
2020-11-30 7:41 ` Hannes Reinecke
2020-11-28 16:14 ` [dm-devel] [PATCH 34/45] block: move holder_dir " Christoph Hellwig
2020-11-30 7:42 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 35/45] block: move make_it_fail " Christoph Hellwig
2020-11-30 7:43 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 36/45] block: move the policy field " Christoph Hellwig
2020-11-30 7:44 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 37/45] block: allocate struct hd_struct as part of struct bdev_inode Christoph Hellwig
2020-11-30 7:46 ` Hannes Reinecke
2020-11-30 9:53 ` Jan Kara
2020-11-28 16:15 ` [dm-devel] [PATCH 38/45] block: switch partition lookup to use struct block_device Christoph Hellwig
2020-11-30 7:47 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 39/45] block: remove the partno field from struct hd_struct Christoph Hellwig
2020-11-30 7:47 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 40/45] block: pass a block_device to blk_alloc_devt Christoph Hellwig
2020-11-30 7:48 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 41/45] block: pass a block_device to invalidate_partition Christoph Hellwig
2020-11-30 7:49 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 42/45] block: switch disk_part_iter_* to use a struct block_device Christoph Hellwig
2020-11-30 7:50 ` Hannes Reinecke
2020-11-30 10:20 ` Jan Kara
2020-11-28 16:15 ` [dm-devel] [PATCH 43/45] f2fs: remove a few bd_part checks Christoph Hellwig
2020-11-30 7:50 ` Hannes Reinecke
2020-11-28 16:15 ` [dm-devel] [PATCH 44/45] block: merge struct block_device and struct hd_struct Christoph Hellwig
2020-11-30 7:51 ` Hannes Reinecke
2020-11-30 10:29 ` Jan Kara
2020-11-28 16:15 ` [dm-devel] [PATCH 45/45] block: stop using bdget_disk for partition 0 Christoph Hellwig
2020-11-30 7:51 ` Hannes Reinecke
2020-11-30 17:19 ` [dm-devel] merge struct block_device and struct hd_struct v4 Christoph Hellwig
2020-11-30 17:51 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2020-11-24 13:27 [dm-devel] merge struct block_device and struct hd_struct v2 Christoph Hellwig
2020-11-24 13:27 ` [dm-devel] [PATCH 32/45] block: move the start_sect field to struct block_device Christoph Hellwig
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