linux-kernel - [PATCH 04/17] fs/afs: Convert to memzero

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Date:   Mon, 23 Nov 2020 22:07:42 -0800
From:   ira.weiny@...el.com
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Ira Weiny <ira.weiny@...el.com>,
        David Howells <dhowells@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Dave Hansen <dave.hansen@...el.com>,
        Matthew Wilcox <willy@...radead.org>,
        Christoph Hellwig <hch@...radead.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Eric Biggers <ebiggers@...nel.org>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>,
        David Sterba <dsterba@...e.com>,
        Steve French <sfrench@...ba.org>,
        Jaegeuk Kim <jaegeuk@...nel.org>, Chao Yu <yuchao0@...wei.com>,
        Nicolas Pitre <nico@...xnic.net>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Brian King <brking@...ibm.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jérôme Glisse <jglisse@...hat.com>,
        Kirti Wankhede <kwankhede@...dia.com>,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH 04/17] fs/afs: Convert to memzero_page()

From: Ira Weiny <ira.weiny@...el.com>

Convert the kmap()/memcpy()/kunmap() pattern to memzero_page().

Cc: David Howells <dhowells@...hat.com>
Signed-off-by: Ira Weiny <ira.weiny@...el.com>
---
 fs/afs/write.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/fs/afs/write.c b/fs/afs/write.c
index 50371207f327..ed7419de0178 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -30,7 +30,6 @@ static int afs_fill_page(struct afs_vnode *vnode, struct key *key,
 {
 	struct afs_read *req;
 	size_t p;
-	void *data;
 	int ret;
 
 	_enter(",,%llu", (unsigned long long)pos);
@@ -38,9 +37,7 @@ static int afs_fill_page(struct afs_vnode *vnode, struct key *key,
 	if (pos >= vnode->vfs_inode.i_size) {
 		p = pos & ~PAGE_MASK;
 		ASSERTCMP(p + len, <=, PAGE_SIZE);
-		data = kmap(page);
-		memset(data + p, 0, len);
-		kunmap(page);
+		memzero_page(page, p, len);
 		return 0;
 	}
 
-- 
2.28.0.rc0.12.gb6a658bd00c9