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H A Dloop.c200f9337 Fri Jun 19 15:47:27 CDT 2020 Luis Chamberlain <mcgrof@kernel.org> loop: be paranoid on exit and prevent new additions / removals

Be pedantic on removal as well and hold the mutex.
This should prevent uses of addition while we exit.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
200f9337 Fri Jun 19 15:47:27 CDT 2020 Luis Chamberlain <mcgrof@kernel.org> loop: be paranoid on exit and prevent new additions / removals

Be pedantic on removal as well and hold the mutex.
This should prevent uses of addition while we exit.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>