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 32/44] block: move the partition_meta_info to struct block_device
Date: Thu, 26 Nov 2020 14:04:10 +0100 [thread overview]
Message-ID: <20201126130422.92945-33-hch@lst.de> (raw)
In-Reply-To: <20201126130422.92945-1-hch@lst.de>
Move the partition_meta_info to struct block_device in preparation for
killing struct hd_struct.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
block/blk.h | 1 -
block/genhd.c | 3 ++-
block/partitions/core.c | 18 +++++++-----------
fs/block_dev.c | 1 +
include/linux/blk_types.h | 2 ++
include/linux/genhd.h | 1 -
init/do_mounts.c | 7 ++++---
7 files changed, 16 insertions(+), 17 deletions(-)
diff --git a/block/blk.h b/block/blk.h
index 3f801f6e86f8a1..0bd4b58bcbaf77 100644
--- a/block/blk.h
+++ b/block/blk.h
@@ -381,7 +381,6 @@ static inline void hd_struct_put(struct hd_struct *part)
static inline void hd_free_part(struct hd_struct *part)
{
- kfree(part->info);
bdput(part->bdev);
percpu_ref_exit(&part->ref);
}
diff --git a/block/genhd.c b/block/genhd.c
index 7bb45382658385..fe202a12eec096 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1002,7 +1002,8 @@ void __init printk_all_partitions(void)
bdevt_str(part_devt(part), devt_buf),
bdev_nr_sectors(part->bdev) >> 1,
disk_name(disk, part->partno, name_buf),
- part->info ? part->info->uuid : "");
+ part->bdev->bd_meta_info ?
+ part->bdev->bd_meta_info->uuid : "");
if (is_part0) {
if (dev->parent && dev->parent->driver)
printk(" driver: %s\n",
diff --git a/block/partitions/core.c b/block/partitions/core.c
index 485777cea26bfa..224a22d82fb86f 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -275,8 +275,9 @@ static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
struct hd_struct *part = dev_to_part(dev);
add_uevent_var(env, "PARTN=%u", part->partno);
- if (part->info && part->info->volname[0])
- add_uevent_var(env, "PARTNAME=%s", part->info->volname);
+ if (part->bdev->bd_meta_info && part->bdev->bd_meta_info->volname[0])
+ add_uevent_var(env, "PARTNAME=%s",
+ part->bdev->bd_meta_info->volname);
return 0;
}
@@ -422,13 +423,10 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
p->policy = get_disk_ro(disk);
if (info) {
- struct partition_meta_info *pinfo;
-
- pinfo = kzalloc_node(sizeof(*pinfo), GFP_KERNEL, disk->node_id);
- if (!pinfo)
+ err = -ENOMEM;
+ bdev->bd_meta_info = kmemdup(info, sizeof(*info), GFP_KERNEL);
+ if (!bdev->bd_meta_info)
goto out_bdput;
- memcpy(pinfo, info, sizeof(*info));
- p->info = pinfo;
}
dname = dev_name(ddev);
@@ -444,7 +442,7 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
err = blk_alloc_devt(p, &devt);
if (err)
- goto out_free_info;
+ goto out_bdput;
pdev->devt = devt;
/* delay uevent until 'holders' subdir is created */
@@ -481,8 +479,6 @@ static struct hd_struct *add_partition(struct gendisk *disk, int partno,
kobject_uevent(&pdev->kobj, KOBJ_ADD);
return p;
-out_free_info:
- kfree(p->info);
out_bdput:
bdput(bdev);
out_free:
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 11e6a9a255845d..62fae6a0e8aa56 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -785,6 +785,7 @@ static void bdev_free_inode(struct inode *inode)
struct block_device *bdev = I_BDEV(inode);
free_percpu(bdev->bd_stats);
+ kfree(bdev->bd_meta_info);
kmem_cache_free(bdev_cachep, BDEV_I(inode));
}
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index a690008f60cd92..2f8ede04e5a94c 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -49,6 +49,8 @@ struct block_device {
/* Mutex for freeze */
struct mutex bd_fsfreeze_mutex;
struct super_block *bd_fsfreeze_sb;
+
+ struct partition_meta_info *bd_meta_info;
} __randomize_layout;
#define bdev_whole(_bdev) \
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 50d27f5d38e2af..30d7076155b4d2 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -57,7 +57,6 @@ struct hd_struct {
struct device __dev;
struct kobject *holder_dir;
int policy, partno;
- struct partition_meta_info *info;
#ifdef CONFIG_FAIL_MAKE_REQUEST
int make_it_fail;
#endif
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 5879edf083b318..368ccb71850126 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -79,8 +79,8 @@ static int match_dev_by_uuid(struct device *dev, const void *data)
const struct uuidcmp *cmp = data;
struct hd_struct *part = dev_to_part(dev);
- if (!part->info ||
- strncasecmp(cmp->uuid, part->info->uuid, cmp->len))
+ if (!part->bdev->bd_meta_info ||
+ strncasecmp(cmp->uuid, part->bdev->bd_meta_info->uuid, cmp->len))
return 0;
return 1;
}
@@ -169,7 +169,8 @@ static int match_dev_by_label(struct device *dev, const void *data)
const char *label = data;
struct hd_struct *part = dev_to_part(dev);
- if (!part->info || strcmp(label, part->info->volname))
+ if (!part->bdev->bd_meta_info ||
+ strcmp(label, part->bdev->bd_meta_info->volname))
return 0;
return 1;
}
--
2.29.2
--
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dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2020-11-26 13:33 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 13:03 [dm-devel] merge struct block_device and struct hd_struct v3 Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 01/44] blk-cgroup: fix a hd_struct leak in blkcg_fill_root_iostats Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 02/44] filemap: consistently use ->f_mapping over ->i_mapping Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 03/44] fs: remove get_super_thawed and get_super_exclusive_thawed Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 04/44] fs: simplify freeze_bdev/thaw_bdev Christoph Hellwig
2020-11-26 14:13 ` Jan Kara
2020-11-26 13:03 ` [dm-devel] [PATCH 05/44] mtip32xx: remove the call to fsync_bdev on removal Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 06/44] zram: do not call set_blocksize Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 07/44] loop: " Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 08/44] dm: simplify flush_bio initialization in __send_empty_flush Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 09/44] dm: remove the block_device reference in struct mapped_device Christoph Hellwig
2020-11-27 10:36 ` Hannes Reinecke
2020-11-26 13:03 ` [dm-devel] [PATCH 10/44] block: remove a duplicate __disk_get_part prototype Christoph Hellwig
2020-11-27 10:36 ` Hannes Reinecke
2020-11-26 13:03 ` [dm-devel] [PATCH 11/44] block: remove a superflous check in blkpg_do_ioctl Christoph Hellwig
2020-11-27 10:37 ` Hannes Reinecke
2020-11-26 13:03 ` [dm-devel] [PATCH 12/44] block: add a bdev_kobj helper Christoph Hellwig
2020-11-26 14:47 ` David Sterba
2020-11-27 12:03 ` Hannes Reinecke
2020-11-26 13:03 ` [dm-devel] [PATCH 13/44] block: use disk_part_iter_exit in disk_part_iter_next Christoph Hellwig
2020-11-27 12:04 ` Hannes Reinecke
2020-11-26 13:03 ` [dm-devel] [PATCH 14/44] block: use put_device in put_disk Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 15/44] block: change the hash used for looking up block devices Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 16/44] init: refactor name_to_dev_t Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 17/44] init: refactor devt_from_partuuid Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 18/44] init: cleanup match_dev_by_uuid and match_dev_by_label Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 19/44] block: refactor __blkdev_put Christoph Hellwig
2020-11-26 13:03 ` [dm-devel] [PATCH 20/44] block: refactor blkdev_get Christoph Hellwig
2020-11-26 14:55 ` Jan Kara
2020-11-26 13:03 ` [dm-devel] [PATCH 21/44] block: move bdput() to the callers of __blkdev_get Christoph Hellwig
2020-11-26 15:05 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 22/44] block: opencode devcgroup_inode_permission Christoph Hellwig
2020-11-26 15:07 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 23/44] block: remove i_bdev Christoph Hellwig
2020-11-26 15:45 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 24/44] block: simplify bdev/disk lookup in blkdev_get Christoph Hellwig
2020-11-26 16:33 ` Jan Kara
2020-11-26 17:42 ` Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 25/44] block: remove ->bd_contains Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 26/44] block: simplify the block device claiming interface Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 27/44] block: simplify part_to_disk Christoph Hellwig
2020-11-26 16:36 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 28/44] block: initialize struct block_device in bdev_alloc Christoph Hellwig
2020-11-26 16:37 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 29/44] block: remove the nr_sects field in struct hd_struct Christoph Hellwig
2020-11-26 16:50 ` Jan Kara
2020-11-26 17:52 ` Christoph Hellwig
2020-11-26 18:04 ` Jan Kara
2020-11-27 9:41 ` Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 30/44] block: move disk stat accounting to struct block_device Christoph Hellwig
2020-11-26 16:53 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 31/44] block: move the start_sect field " Christoph Hellwig
2020-11-26 16:56 ` Jan Kara
2020-11-26 18:02 ` Christoph Hellwig
2020-11-26 13:04 ` Christoph Hellwig [this message]
2020-11-26 16:58 ` [dm-devel] [PATCH 32/44] block: move the partition_meta_info " Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 33/44] block: move holder_dir " Christoph Hellwig
2020-11-26 17:00 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 34/44] block: move make_it_fail " Christoph Hellwig
2020-11-26 17:01 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 35/44] block: move the policy field " Christoph Hellwig
2020-11-26 17:03 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 36/44] block: allocate struct hd_struct as part of struct bdev_inode Christoph Hellwig
2020-11-26 17:35 ` Jan Kara
2020-11-26 18:00 ` Jan Kara
2020-11-26 18:02 ` Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 37/44] block: switch partition lookup to use struct block_device Christoph Hellwig
2020-11-26 17:45 ` Jan Kara
2020-11-26 18:22 ` Jan Kara
2020-11-27 9:48 ` Christoph Hellwig
2020-11-27 12:45 ` Jan Kara
2020-11-27 15:36 ` Christoph Hellwig
2020-11-27 17:26 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 38/44] block: remove the partno field from struct hd_struct Christoph Hellwig
2020-11-26 17:46 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 39/44] block: pass a block_device to blk_alloc_devt Christoph Hellwig
2020-11-26 17:47 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 40/44] block: pass a block_device to invalidate_partition Christoph Hellwig
2020-11-26 17:49 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 41/44] block: switch disk_part_iter_* to use a struct block_device Christoph Hellwig
2020-11-27 12:53 ` Jan Kara
2020-11-27 15:24 ` Christoph Hellwig
2020-11-27 17:30 ` Jan Kara
2020-11-26 13:04 ` [dm-devel] [PATCH 42/44] f2fs: remove a few bd_part checks Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 43/44] block: merge struct block_device and struct hd_struct Christoph Hellwig
2020-11-27 13:19 ` Jan Kara
2020-11-27 15:47 ` Christoph Hellwig
2020-11-26 13:04 ` [dm-devel] [PATCH 44/44] block: stop using bdget_disk for partition 0 Christoph Hellwig
2020-11-27 13:22 ` Jan Kara
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