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| author | Christoph Hellwig <hch@lst.de> | 2022-07-19 11:18:17 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-08-03 01:22:43 +0200 |
| commit | e8c59ac41974438168c89e2c881119c53934f96c (patch) | |
| tree | dd02b963c306d5ea6bdcb2b09eb13708be136871 /drivers/md/md.c | |
| parent | md: fix error handling in md_alloc (diff) | |
| download | linux-e8c59ac41974438168c89e2c881119c53934f96c.tar.xz linux-e8c59ac41974438168c89e2c881119c53934f96c.zip | |
md: implement ->free_disk
Ensure that all private data is only freed once all accesses are done.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Song Liu <song@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index c1439d5ab9b1..e07a6f26116c 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -5600,12 +5600,6 @@ static void md_free(struct kobject *ko) del_gendisk(mddev->gendisk); put_disk(mddev->gendisk); - - percpu_ref_exit(&mddev->writes_pending); - - bioset_exit(&mddev->bio_set); - bioset_exit(&mddev->sync_set); - kfree(mddev); } static const struct sysfs_ops md_sysfs_ops = { @@ -7875,6 +7869,17 @@ static unsigned int md_check_events(struct gendisk *disk, unsigned int clearing) return ret; } +static void md_free_disk(struct gendisk *disk) +{ + struct mddev *mddev = disk->private_data; + + percpu_ref_exit(&mddev->writes_pending); + bioset_exit(&mddev->bio_set); + bioset_exit(&mddev->sync_set); + + kfree(mddev); +} + const struct block_device_operations md_fops = { .owner = THIS_MODULE, @@ -7888,6 +7893,7 @@ const struct block_device_operations md_fops = .getgeo = md_getgeo, .check_events = md_check_events, .set_read_only = md_set_read_only, + .free_disk = md_free_disk, }; static int md_thread(void *arg) |