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authorChristoph Hellwig <hch@lst.de>2021-08-11 14:44:28 +0200
committerJens Axboe <axboe@kernel.dk>2021-08-13 14:17:41 -0600
commit6e4df4c6488165637b95b9701cc862a42a3836ba (patch)
tree96ded1a3513ae34c7462db58bd0433785f6f7ac6 /drivers/Makefile
parent6177b56c96ff3b5e23d47f6b6c8630f31145da93 (diff)
downloadlinux-6e4df4c6488165637b95b9701cc862a42a3836ba.tar.bz2
nbd: reduce the nbd_index_mutex scope
nbd_index_mutex is currently held over add_disk and inside ->open, which leads to lock order reversals. Refactor the device creation code path so that nbd_dev_add is called without nbd_index_mutex lock held and only takes it for the IDR insertation. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210811124428.2368491-7-hch@lst.de [axboe: fix whitespace] Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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