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H A Dloop.c0a42e99b Thu Nov 08 07:01:04 CST 2018 Jan Kara <jack@suse.cz> loop: Get rid of loop_index_mutex

Now that loop_ctl_mutex is global, just get rid of loop_index_mutex as
there is no good reason to keep these two separate and it just
complicates the locking.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
0a42e99b Thu Nov 08 07:01:04 CST 2018 Jan Kara <jack@suse.cz> loop: Get rid of loop_index_mutex

Now that loop_ctl_mutex is global, just get rid of loop_index_mutex as
there is no good reason to keep these two separate and it just
complicates the locking.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>