From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: [PATCH 18/23] block: add a error_count field to struct request Date: Thu, 20 Apr 2017 16:03:11 +0200 Message-ID: <20170420140316.6546-19-hch@lst.de> References: <20170420140316.6546-1-hch@lst.de> Return-path: In-Reply-To: <20170420140316.6546-1-hch@lst.de> Sender: linux-block-owner@vger.kernel.org To: Jens Axboe Cc: Josef Bacik , James Smart , Konrad Rzeszutek Wilk , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, dm-devel@redhat.com List-Id: linux-scsi@vger.kernel.org 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 --- include/linux/blkdev.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index e2064ed3c703..a3dcee624de3 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