From: Christoph Hellwig <hch@bombadil.infradead.org> To: Jens Axboe <axboe@kernel.dk> Cc: "Josef Bacik" <jbacik@fb.com>, "James Smart" <james.smart@broadcom.com>, "Konrad Rzeszutek Wilk" <konrad.wilk@oracle.com>, "Roger Pau Monné" <roger.pau@citrix.com>, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, dm-devel@redhat.com, "Christoph Hellwig" <hch@lst.de> Subject: block: add a error_count field to struct request Date: Tue, 18 Apr 2017 08:52:23 -0700 [thread overview] Message-ID: <20170418155229.5977-18-hch@bombadil.infradead.org> (raw) In-Reply-To: <20170418155229.5977-1-hch@bombadil.infradead.org> From: Christoph Hellwig <hch@lst.de> This is for the legacy floppy and ataflop drivers that currently abuse ->errors for this purpose. It's stashed away in a union to not grow the struct size, the other fields are either used by modern drivers for different purposes or the I/O scheduler before queing the I/O to drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> --- include/linux/blkdev.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 5986e1250d7d..e618164462e8 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -175,6 +175,7 @@ struct request { struct rb_node rb_node; /* sort/lookup */ struct bio_vec special_vec; void *completion_data; + int error_count; /* for legacy drivers, don't use */ }; /* -- 2.11.0
WARNING: multiple messages have this Message-ID (diff)
From: hch@bombadil.infradead.org (Christoph Hellwig) Subject: block: add a error_count field to struct request Date: Tue, 18 Apr 2017 08:52:23 -0700 [thread overview] Message-ID: <20170418155229.5977-18-hch@bombadil.infradead.org> (raw) In-Reply-To: <20170418155229.5977-1-hch@bombadil.infradead.org> From: Christoph Hellwig <hch@lst.de> This is for the legacy floppy and ataflop drivers that currently abuse ->errors for this purpose. It's stashed away in a union to not grow the struct size, the other fields are either used by modern drivers for different purposes or the I/O scheduler before queing the I/O to drivers. Signed-off-by: Christoph Hellwig <hch at lst.de> --- include/linux/blkdev.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 5986e1250d7d..e618164462e8 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -175,6 +175,7 @@ struct request { struct rb_node rb_node; /* sort/lookup */ struct bio_vec special_vec; void *completion_data; + int error_count; /* for legacy drivers, don't use */ }; /* -- 2.11.0
next prev parent reply other threads:[~2017-04-18 15:52 UTC|newest] Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-04-18 15:52 kill req->errors V2 Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` block: remove the blk_execute_rq return value Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 22:24 ` Bart Van Assche 2017-04-18 22:24 ` Bart Van Assche 2017-04-18 22:24 ` Bart Van Assche 2017-04-19 6:13 ` hch 2017-04-19 6:13 ` hch 2017-04-18 15:52 ` nvme-fc: fix status code handling in nvme_fc_fcpio_done Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 21:08 ` James Smart 2017-04-18 21:08 ` James Smart 2017-04-18 15:52 ` nvme: split nvme status from block req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` nvme: make nvme_error_status private Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` virtio: fix spelling of virtblk_scsi_request_done Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` virtio_blk: don't use req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` scsi: introduce a new result field in struct scsi_request Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 22:34 ` Bart Van Assche 2017-04-18 22:34 ` Bart Van Assche 2017-04-18 22:34 ` Bart Van Assche 2017-04-19 6:14 ` hch 2017-04-19 6:14 ` hch 2017-04-18 15:52 ` loop: zero-fill bio on the submitting cpu Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` null_blk: don't pass always-0 req->errors to blk_mq_complete_request Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` dm rq: don't pass irrelevant error code " Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` dm mpath: don't check for req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` nbd: don't use req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` mtip32xx: add a status field to struct mtip_cmd Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` xen-blkfront: don't use req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` blk-mq: remove the error argument to blk_mq_complete_request Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 22:50 ` Bart Van Assche 2017-04-18 22:50 ` Bart Van Assche 2017-04-18 22:50 ` Bart Van Assche 2017-04-19 17:54 ` hch 2017-04-19 17:54 ` hch 2017-04-18 15:52 ` blk-mq: simplify __blk_mq_complete_request Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig [this message] 2017-04-18 15:52 ` block: add a error_count field to struct request Christoph Hellwig 2017-04-18 22:57 ` Bart Van Assche 2017-04-18 22:57 ` Bart Van Assche 2017-04-18 22:57 ` Bart Van Assche 2017-04-19 6:15 ` hch 2017-04-19 6:15 ` hch 2017-04-18 15:52 ` floppy: switch from req->errors to req->error_count Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` ataflop: " Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` swim3: remove (commented out) printing of req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` pd: remove bogus check for req->errors Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 22:59 ` Bart Van Assche 2017-04-18 22:59 ` Bart Van Assche 2017-04-18 22:59 ` Bart Van Assche 2017-04-18 15:52 ` blktrace: remove the unused block_rq_abort tracepoint Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig 2017-04-18 15:52 ` block: remove the errors field from struct request Christoph Hellwig 2017-04-18 15:52 ` Christoph Hellwig
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