linux-kernel - [PATCH 2/2] f2fs: shrink size of struct discard

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Date:   Wed, 26 Apr 2017 17:39:55 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <jaegeuk@...nel.org>
CC:     <linux-f2fs-devel@...ts.sourceforge.net>,
        <linux-kernel@...r.kernel.org>, <chao@...nel.org>,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH 2/2] f2fs: shrink size of struct discard_cmd

In order to shrink size of struct discard_cmd, change variable type of
@state in struct discard_cmd from int to unsigned char.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/f2fs/f2fs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index e0c8e0074224..914b5c64cfae 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -220,7 +220,7 @@ struct discard_cmd {
 	struct completion wait;		/* compleation */
 	struct block_device *bdev;	/* bdev */
 	unsigned short ref;		/* reference count */
-	int state;			/* state */
+	unsigned char state;		/* state */
 	int error;			/* bio error */
 };
 
-- 
2.12.2.510.ge1104a5ee539