From: Johannes Thumshirn <jthumshirn@suse.de> To: "Martin K . Petersen" <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@infradead.org>, Hannes Reinecke <hare@suse.de>, Linux Kernel Mailinglist <linux-kernel@vger.kernel.org>, Linux SCSI Mailinglist <linux-scsi@vger.kernel.org>, Johannes Thumshirn <jthumshirn@suse.de>, Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org (open list:BLOCK LAYER) Subject: [PATCH v2 09/16] block: add reference counting for struct bsg_job Date: Wed, 12 Oct 2016 15:06:35 +0200 [thread overview] Message-ID: <d24033462e3d6e65459db163330a8186c7e14c0a.1476276823.git.jthumshirn@suse.de> (raw) In-Reply-To: <cover.1476276823.git.jthumshirn@suse.de> In-Reply-To: <cover.1476276823.git.jthumshirn@suse.de> Add reference counting to 'struct bsg_job' so we can implement a reuqest timeout handler for bsg_jobs, which is needed for Fibre Channel. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> --- block/bsg-lib.c | 7 +++++-- include/linux/bsg-lib.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/block/bsg-lib.c b/block/bsg-lib.c index 650f427..632fb40 100644 --- a/block/bsg-lib.c +++ b/block/bsg-lib.c @@ -32,8 +32,10 @@ * bsg_destroy_job - routine to teardown/delete a bsg job * @job: bsg_job that is to be torn down */ -static void bsg_destroy_job(struct bsg_job *job) +static void bsg_destroy_job(struct kref *kref) { + struct bsg_job *job = container_of(kref, struct bsg_job, kref); + put_device(job->dev); /* release reference for the request */ kfree(job->request_payload.sg_list); @@ -84,7 +86,7 @@ static void bsg_softirq_done(struct request *rq) struct bsg_job *job = rq->special; blk_end_request_all(rq, rq->errors); - bsg_destroy_job(job); + kref_put(&job->kref, bsg_destroy_job); } static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req) @@ -142,6 +144,7 @@ static int bsg_create_job(struct device *dev, struct request *req) job->dev = dev; /* take a reference for the request */ get_device(job->dev); + kref_init(&job->kref); return 0; failjob_rls_rqst_payload: diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h index a226652..58e0717 100644 --- a/include/linux/bsg-lib.h +++ b/include/linux/bsg-lib.h @@ -40,6 +40,8 @@ struct bsg_job { struct device *dev; struct request *req; + struct kref kref; + /* Transport/driver specific request/reply structs */ void *request; void *reply; -- 1.8.5.6
WARNING: multiple messages have this Message-ID (diff)
From: Johannes Thumshirn <jthumshirn@suse.de> To: "Martin K . Petersen" <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@infradead.org>, Hannes Reinecke <hare@suse.de>, Linux Kernel Mailinglist <linux-kernel@vger.kernel.org>, Linux SCSI Mailinglist <linux-scsi@vger.kernel.org>, Johannes Thumshirn <jthumshirn@suse.de>, Jens Axboe <axboe@kernel.dk>, "open list:BLOCK LAYER" <linux-block@vger.kernel.org> Subject: [PATCH v2 09/16] block: add reference counting for struct bsg_job Date: Wed, 12 Oct 2016 15:06:35 +0200 [thread overview] Message-ID: <d24033462e3d6e65459db163330a8186c7e14c0a.1476276823.git.jthumshirn@suse.de> (raw) In-Reply-To: <cover.1476276823.git.jthumshirn@suse.de> In-Reply-To: <cover.1476276823.git.jthumshirn@suse.de> Add reference counting to 'struct bsg_job' so we can implement a reuqest timeout handler for bsg_jobs, which is needed for Fibre Channel. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> --- block/bsg-lib.c | 7 +++++-- include/linux/bsg-lib.h | 2 ++ 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/block/bsg-lib.c b/block/bsg-lib.c index 650f427..632fb40 100644 --- a/block/bsg-lib.c +++ b/block/bsg-lib.c @@ -32,8 +32,10 @@ * bsg_destroy_job - routine to teardown/delete a bsg job * @job: bsg_job that is to be torn down */ -static void bsg_destroy_job(struct bsg_job *job) +static void bsg_destroy_job(struct kref *kref) { + struct bsg_job *job = container_of(kref, struct bsg_job, kref); + put_device(job->dev); /* release reference for the request */ kfree(job->request_payload.sg_list); @@ -84,7 +86,7 @@ static void bsg_softirq_done(struct request *rq) struct bsg_job *job = rq->special; blk_end_request_all(rq, rq->errors); - bsg_destroy_job(job); + kref_put(&job->kref, bsg_destroy_job); } static int bsg_map_buffer(struct bsg_buffer *buf, struct request *req) @@ -142,6 +144,7 @@ static int bsg_create_job(struct device *dev, struct request *req) job->dev = dev; /* take a reference for the request */ get_device(job->dev); + kref_init(&job->kref); return 0; failjob_rls_rqst_payload: diff --git a/include/linux/bsg-lib.h b/include/linux/bsg-lib.h index a226652..58e0717 100644 --- a/include/linux/bsg-lib.h +++ b/include/linux/bsg-lib.h @@ -40,6 +40,8 @@ struct bsg_job { struct device *dev; struct request *req; + struct kref kref; + /* Transport/driver specific request/reply structs */ void *request; void *reply; -- 1.8.5.6
next prev parent reply other threads:[~2016-10-12 13:06 UTC|newest] Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-10-12 13:06 [PATCH v2 00/16] Convert FibreChannel bsg code to use bsg-lib Johannes Thumshirn 2016-10-12 13:06 ` [PATCH v2 01/16] scsi: Get rid of struct fc_bsg_buffer Johannes Thumshirn 2016-10-13 9:01 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 02/16] scsi: don't use fc_bsg_job::request and fc_bsg_job::reply directly Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:25 ` Hannes Reinecke 2016-10-13 11:25 ` Hannes Reinecke 2016-10-13 11:25 ` Hannes Reinecke 2016-10-13 15:15 ` Steffen Maier 2016-10-13 15:15 ` Steffen Maier 2016-10-13 15:15 ` Steffen Maier 2016-10-13 16:24 ` Johannes Thumshirn 2016-10-13 16:24 ` Johannes Thumshirn 2016-10-13 16:24 ` Johannes Thumshirn 2016-10-28 9:53 ` Steffen Maier 2016-10-28 9:53 ` Steffen Maier 2016-10-28 9:53 ` Steffen Maier 2016-10-28 11:31 ` Hannes Reinecke 2016-10-28 11:31 ` Hannes Reinecke 2016-10-28 11:31 ` Hannes Reinecke 2016-10-28 13:53 ` Steffen Maier 2016-10-28 13:53 ` Steffen Maier 2016-10-28 13:53 ` Steffen Maier 2016-10-28 16:29 ` Andreas Krebbel1 2016-10-28 16:29 ` Andreas Krebbel1 2016-10-28 16:29 ` Andreas Krebbel1 2016-10-30 17:56 ` Johannes Thumshirn 2016-10-30 17:56 ` Johannes Thumshirn 2016-10-30 17:56 ` Johannes Thumshirn 2016-10-12 13:06 ` [PATCH v2 03/16] scsi: fc: Export fc_bsg_jobdone and use it in FC drivers Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:27 ` Hannes Reinecke 2016-10-13 11:27 ` Hannes Reinecke 2016-10-13 11:27 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 04/16] scsi: Unify interfaces of fc_bsg_jobdone and bsg_job_done Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:33 ` Hannes Reinecke 2016-10-13 11:33 ` Hannes Reinecke 2016-10-13 11:33 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 05/16] scsi: fc: provide fc_bsg_to_shost() helper Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:34 ` Hannes Reinecke 2016-10-13 11:34 ` Hannes Reinecke 2016-10-13 11:34 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 06/16] scsi: fc: provide fc_bsg_to_rport() helper Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:34 ` Hannes Reinecke 2016-10-13 11:34 ` Hannes Reinecke 2016-10-13 11:34 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 07/16] scsi: libfc: don't set FC_RQST_STATE_DONE before calling fc_bsg_jobdone() Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:38 ` Hannes Reinecke 2016-10-13 11:38 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 08/16] scsi: fc: implement kref backed reference counting Johannes Thumshirn 2016-10-13 11:42 ` Hannes Reinecke 2016-10-13 14:40 ` Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn [this message] 2016-10-12 13:06 ` [PATCH v2 09/16] block: add reference counting for struct bsg_job Johannes Thumshirn 2016-10-13 11:43 ` Hannes Reinecke 2016-10-13 11:43 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 10/16] scsi: change FC drivers to use 'struct bsg_job' Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:44 ` Hannes Reinecke 2016-10-13 11:44 ` Hannes Reinecke 2016-10-13 11:44 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 11/16] scsi: fc: Use bsg_destroy_job Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:45 ` Hannes Reinecke 2016-10-13 11:45 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 12/16] scsi: fc: use bsg_softirq_done Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:45 ` Hannes Reinecke 2016-10-13 11:45 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 13/16] scsi: fc: use bsg_job_done Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:46 ` Hannes Reinecke 2016-10-13 11:46 ` Hannes Reinecke 2016-10-13 11:46 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 14/16] block: add bsg_job_put() and bsg_job_get() Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:47 ` Hannes Reinecke 2016-10-13 11:47 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 15/16] scsi: fc: move FC transport's bsg code to bsg-lib Johannes Thumshirn 2016-10-13 11:49 ` Hannes Reinecke 2016-10-12 13:06 ` [PATCH v2 16/16] block: unexport bsg_softirq_done() again Johannes Thumshirn 2016-10-12 13:06 ` Johannes Thumshirn 2016-10-13 11:50 ` Hannes Reinecke 2016-10-13 11:50 ` Hannes Reinecke 2016-10-12 15:54 ` [PATCH v2 00/16] Convert FibreChannel bsg code to use bsg-lib Steffen Maier 2016-10-13 7:39 ` Johannes Thumshirn
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