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(parent: f7bf5e2) | patch
md: check for NULL ->meta_bdev before calling bdev_read_only
authorChristoph Hellwig <hch@lst.de>
Mon, 1 Feb 2021 13:17:20 +0000 (14:17 +0100)
committerJens Axboe <axboe@kernel.dk>
Mon, 1 Feb 2021 16:35:20 +0000 (09:35 -0700)
commitd7a4783883d350e33308bf7c9ef0fe4e38f9c8e2
treee4b2120d2e9bfd876081495d7611d51690657ae5tree
parentf7bf5e24e0b40fdb2321d9cf2b41043425fb4f9dcommit | diff
md: check for NULL ->meta_bdev before calling bdev_read_only

->meta_bdev is optional and not set for most arrays.  Add a
rdev_read_only helper that calls bdev_read_only for both devices
in a safe way.

Fixes: 6f0d9689b670 ("block: remove the NULL bdev check in bdev_read_only")
Reported-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/md/md.c diff | blob | history
XArray, radix tree and IDR