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H A D | dquot.c | 62676838 Thu Jun 08 08:00:20 CDT 2017 Jan Kara <jack@suse.cz> quota: Do more fine-grained locking in dquot_acquire()
We need dqio_sem held just for reading when calling ->read_dqblk() in dquot_acquire(). Also dqio_sem is not needed when setting DQ_READ_B and DQ_ACTIVE_B as concurrent reads and dquot activations are serialized by dq_lock. So acquire and release dqio_sem closer to the place where it is needed. This reduces lock hold time and will make locking changes easier.
Signed-off-by: Jan Kara <jack@suse.cz>
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