linux-kernel - [PATCH v4 6/8] block: bio: remove BIO_MAX

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Message-Id: <1460634438-26530-7-git-send-email-ming.lei@canonical.com>
Date:	Thu, 14 Apr 2016 19:46:59 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Jens Axboe <axboe@...com>, linux-kernel@...r.kernel.org
Cc:	linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>,
	Al Viro <viro@...iv.linux.org.uk>,
	Ming Lei <ming.lei@...onical.com>,
	Keith Busch <keith.busch@...el.com>, Jan Kara <jack@...e.cz>,
	Kent Overstreet <kent.overstreet@...il.com>,
	Tejun Heo <tj@...nel.org>, Mike Snitzer <snitzer@...hat.com>
Subject: [PATCH v4 6/8] block: bio: remove BIO_MAX_SECTORS

No one need this macro, so remove it. The motivation is
for supporting multipage bvecs, in which we only know
what the max count of bvecs is supported in the bio,
instead of max size or max sectors.

Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Ming Lei <ming.lei@...onical.com>
---
 include/linux/bio.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 96835a0..d9beea7 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -42,7 +42,6 @@
 
 #define BIO_MAX_PAGES		256
 #define BIO_MAX_SIZE		(BIO_MAX_PAGES << PAGE_SHIFT)
-#define BIO_MAX_SECTORS		(BIO_MAX_SIZE >> 9)
 
 /*
  * upper 16 bits of bi_rw define the io priority of this bio
-- 
1.9.1