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b9b083f904
Currently, wait_barrier() will hold 'resync_lock' to read 'conf->barrier', and io can't be dispatched until 'barrier' is dropped. Since holding the 'barrier' is not common, convert 'resync_lock' to use seqlock so that holding lock can be avoided in fast path. Signed-off-by: Yu Kuai <yukuai3@huawei.com> Reviewed-and-Tested-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Song Liu <song@kernel.org>
184 lines
5.1 KiB
184 lines
5.1 KiB