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| author | Christoph Hellwig <hch@lst.de> | 2020-05-04 14:47:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-08-08 08:54:29 +0200 |
| commit | d6c434ae9d3b5cd1fcb8e3aa28172f3d79d81641 (patch) | |
| tree | 194bc9a73bf569e36942e5e7afe9ac21faeb1ec8 /include | |
| parent | 19a845e19ded4f81dad2a0941f44fb668ed25564 (diff) | |
| download | linux-stable-d6c434ae9d3b5cd1fcb8e3aa28172f3d79d81641.tar.gz linux-stable-d6c434ae9d3b5cd1fcb8e3aa28172f3d79d81641.tar.bz2 linux-stable-d6c434ae9d3b5cd1fcb8e3aa28172f3d79d81641.zip | |
bdi: add a ->dev_name field to struct backing_dev_info
[ Upstream commit 6bd87eec23cbc9ed222bed0f5b5b02bf300e9a8d ]
Cache a copy of the name for the life time of the backing_dev_info
structure so that we can reference it even after unregistering.
Fixes: 68f23b89067f ("memcg: fix a crash in wb_workfn when a device disappears")
Reported-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/backing-dev-defs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/backing-dev-defs.h b/include/linux/backing-dev-defs.h index 07e02d6df5ad..65d47522413c 100644 --- a/include/linux/backing-dev-defs.h +++ b/include/linux/backing-dev-defs.h @@ -197,6 +197,7 @@ struct backing_dev_info { wait_queue_head_t wb_waitq; struct device *dev; + char dev_name[64]; struct device *owner; struct timer_list laptop_mode_wb_timer; |