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authorChristoph Hellwig <hch@lst.de>2020-11-24 09:34:00 +0100
committerJens Axboe <axboe@kernel.dk>2020-12-01 14:53:40 -0700
commit15e3d2c5cd53298272e59ad9072d3468f9dd3781 (patch)
treee526446b6b09c036e9aed966dbe2bdd252f5bb98 /fs
parenta782483cc1f875355690625d8253a232f2581418 (diff)
block: move disk stat accounting to struct block_device
Move the dkstats and stamp 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> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs')
-rw-r--r--fs/block_dev.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 31ee5a857f71..0832c7830f3a 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -32,6 +32,7 @@
#include <linux/cleancache.h>
#include <linux/task_io_accounting_ops.h>
#include <linux/falloc.h>
+#include <linux/part_stat.h>
#include <linux/uaccess.h>
#include <linux/suspend.h>
#include "internal.h"
@@ -781,6 +782,10 @@ static struct inode *bdev_alloc_inode(struct super_block *sb)
static void bdev_free_inode(struct inode *inode)
{
+ struct block_device *bdev = I_BDEV(inode);
+
+ free_percpu(bdev->bd_stats);
+
kmem_cache_free(bdev_cachep, BDEV_I(inode));
}
@@ -875,6 +880,11 @@ struct block_device *bdev_alloc(struct gendisk *disk, u8 partno)
#ifdef CONFIG_SYSFS
INIT_LIST_HEAD(&bdev->bd_holder_disks);
#endif
+ bdev->bd_stats = alloc_percpu(struct disk_stats);
+ if (!bdev->bd_stats) {
+ iput(inode);
+ return NULL;
+ }
return bdev;
}