From: Christoph Hellwig <hch@lst.de>
Date: Thu, 20 Apr 2017 14:03:11 +0000 (+0200)
Subject: block: add a error_count field to struct request
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=e26738e037f34aedfe05e412f442833f44f4a6e5;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

block: add a error_count field to struct request

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>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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 */
 	};
 
 	/*