linux-kernel - [PATCH -next] afs: remove set but not used variables 'before' and 'after'

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Message-ID: <20191023135506.13924-1-yuehaibing@huawei.com>
Date:   Wed, 23 Oct 2019 21:55:06 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <dhowells@...hat.com>
CC:     <linux-afs@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <pmladek@...e.com>, <sergey.senozhatsky@...il.com>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] afs: remove set but not used variables 'before' and 'after'

fs/afs/dir_edit.c:71:12: warning: variable before set but not used [-Wunused-but-set-variable]
fs/afs/dir_edit.c:71:20: warning: variable after set but not used [-Wunused-but-set-variable]
fs/afs/dir_edit.c:96:12: warning: variable before set but not used [-Wunused-but-set-variable]
fs/afs/dir_edit.c:96:20: warning: variable after set but not used [-Wunused-but-set-variable]

They are never used, so can be removed.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 fs/afs/dir_edit.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/fs/afs/dir_edit.c b/fs/afs/dir_edit.c
index d4fbe5f..b108528 100644
--- a/fs/afs/dir_edit.c
+++ b/fs/afs/dir_edit.c
@@ -68,13 +68,11 @@ static int afs_find_contig_bits(union afs_xdr_dir_block *block, unsigned int nr_
 static void afs_set_contig_bits(union afs_xdr_dir_block *block,
 				int bit, unsigned int nr_slots)
 {
-	u64 mask, before, after;
+	u64 mask;
 
 	mask = (1 << nr_slots) - 1;
 	mask <<= bit;
 
-	before = *(u64 *)block->hdr.bitmap;
-
 	block->hdr.bitmap[0] |= (u8)(mask >> 0 * 8);
 	block->hdr.bitmap[1] |= (u8)(mask >> 1 * 8);
 	block->hdr.bitmap[2] |= (u8)(mask >> 2 * 8);
@@ -83,8 +81,6 @@ static void afs_set_contig_bits(union afs_xdr_dir_block *block,
 	block->hdr.bitmap[5] |= (u8)(mask >> 5 * 8);
 	block->hdr.bitmap[6] |= (u8)(mask >> 6 * 8);
 	block->hdr.bitmap[7] |= (u8)(mask >> 7 * 8);
-
-	after = *(u64 *)block->hdr.bitmap;
 }
 
 /*
@@ -93,13 +89,11 @@ static void afs_set_contig_bits(union afs_xdr_dir_block *block,
 static void afs_clear_contig_bits(union afs_xdr_dir_block *block,
 				  int bit, unsigned int nr_slots)
 {
-	u64 mask, before, after;
+	u64 mask;
 
 	mask = (1 << nr_slots) - 1;
 	mask <<= bit;
 
-	before = *(u64 *)block->hdr.bitmap;
-
 	block->hdr.bitmap[0] &= ~(u8)(mask >> 0 * 8);
 	block->hdr.bitmap[1] &= ~(u8)(mask >> 1 * 8);
 	block->hdr.bitmap[2] &= ~(u8)(mask >> 2 * 8);
@@ -108,8 +102,6 @@ static void afs_clear_contig_bits(union afs_xdr_dir_block *block,
 	block->hdr.bitmap[5] &= ~(u8)(mask >> 5 * 8);
 	block->hdr.bitmap[6] &= ~(u8)(mask >> 6 * 8);
 	block->hdr.bitmap[7] &= ~(u8)(mask >> 7 * 8);
-
-	after = *(u64 *)block->hdr.bitmap;
 }
 
 /*
-- 
2.7.4