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scsi: core: Also call destroy_rcu_head() for passthrough requests
cmd->rcu is initialized by scsi_initialize_rq(). For passthrough requests, blk_get_request() calls scsi_initialize_rq(). For filesystem requests, scsi_init_command() calls scsi_initialize_rq(). Make sure that destroy_rcu_head() is called for passthrough requests. Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: Ewan D. Milne <emilne@redhat.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Reported-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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1 changed files with 8 additions and 1 deletions
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@ -585,9 +585,16 @@ static bool scsi_end_request(struct request *req, blk_status_t error,
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if (!blk_rq_is_scsi(req)) {
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WARN_ON_ONCE(!(cmd->flags & SCMD_INITIALIZED));
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cmd->flags &= ~SCMD_INITIALIZED;
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destroy_rcu_head(&cmd->rcu);
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}
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/*
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* Calling rcu_barrier() is not necessary here because the
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* SCSI error handler guarantees that the function called by
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* call_rcu() has been called before scsi_end_request() is
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* called.
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*/
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destroy_rcu_head(&cmd->rcu);
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/*
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* In the MQ case the command gets freed by __blk_mq_end_request,
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* so we have to do all cleanup that depends on it earlier.
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