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From: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
To: <linux-block@vger.kernel.org>
Cc: Yang Xu <xuyang2018.jy@cn.fujitsu.com>,
	Martijn Coenen <maco@android.com>
Subject: [PATCH] loop: Remove redundant status flag operation
Date: Fri, 12 Jun 2020 10:43:51 +0800
Message-ID: <1591929831-2397-1-git-send-email-xuyang2018.jy@cn.fujitsu.com> (raw)

Since ~LOOP_SET_STATUS_SETTABLE_FLAG is always a subset of ~LOOP_SET_STATUS_CLEARABLE_FLAGS
,remove this redundant flags operation.

Cc: Martijn Coenen <maco@android.com>
Signed-off-by: Yang Xu <xuyang2018.jy@cn.fujitsu.com>
---
 drivers/block/loop.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index c33bbbf..2a61079 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1391,8 +1391,6 @@ static int loop_clr_fd(struct loop_device *lo)
 
 	/* Mask out flags that can't be set using LOOP_SET_STATUS. */
 	lo->lo_flags &= LOOP_SET_STATUS_SETTABLE_FLAGS;
-	/* For those flags, use the previous values instead */
-	lo->lo_flags |= prev_lo_flags & ~LOOP_SET_STATUS_SETTABLE_FLAGS;
 	/* For flags that can't be cleared, use previous values too */
 	lo->lo_flags |= prev_lo_flags & ~LOOP_SET_STATUS_CLEARABLE_FLAGS;
 
-- 
1.8.3.1




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Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-12  2:43 Yang Xu [this message]
2020-08-01  3:04 ` Yang Xu
2020-08-06  7:45   ` Martijn Coenen
2020-08-06  8:03     ` Yang Xu

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