linux-kernel - [PATCH] drivers/block/zram/zram_drv.c: remove ret check for invalid io request

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Message-Id: <20200530092853.3253-1-zbestahu@163.com>
Date:   Sat, 30 May 2020 17:28:53 +0800
From:   Yue Hu <zbestahu@....com>
To:     minchan@...nel.org, ngupta@...are.org,
        sergey.senozhatsky.work@...il.com, axboe@...nel.dk
Cc:     linux-kernel@...r.kernel.org, huyue2@...ong.com
Subject: [PATCH] drivers/block/zram/zram_drv.c: remove ret check for invalid io request

From: Yue Hu <huyue2@...ong.com>

There is no need to goto out to check ret if it's an invalid io request
since we know ret = -EINVAL. Let's return the error directly in that
case.

Signed-off-by: Yue Hu <huyue2@...ong.com>
---
 drivers/block/zram/zram_drv.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index 1bdb5793842b..bdca06930504 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1639,8 +1639,7 @@ static int zram_rw_page(struct block_device *bdev, sector_t sector,
 
 	if (!valid_io_request(zram, sector, PAGE_SIZE)) {
 		atomic64_inc(&zram->stats.invalid_io);
-		ret = -EINVAL;
-		goto out;
+		return -EINVAL;
 	}
 
 	index = sector >> SECTORS_PER_PAGE_SHIFT;
@@ -1651,7 +1650,7 @@ static int zram_rw_page(struct block_device *bdev, sector_t sector,
 	bv.bv_offset = 0;
 
 	ret = zram_bvec_rw(zram, &bv, index, offset, op, NULL);
-out:
+
 	/*
 	 * If I/O fails, just return error(ie, non-zero) without
 	 * calling page_endio.
-- 
2.11.0