From: Nate Diller <nate.diller@gmail.com>
To: Andrew Morton <akpm@osdl.org>, Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: [PATCH 4/13] ext3: use zero_user_page
Date: Tue, 10 Apr 2007 20:36:00 -0700 [thread overview]
Message-ID: <20070411033600.11000.20151.patchbomb.py@localhost> (raw)
In-Reply-To: <20070411033600.11000.38285.patchbomb.py@localhost>
Use zero_user_page() instead of open-coding it.
Signed-off-by: Nate Diller <nate.diller@gmail.com>
---
diff -urpN -X dontdiff linux-2.6.21-rc6-mm1/fs/ext3/inode.c linux-2.6.21-rc6-mm1-test/fs/ext3/inode.c
--- linux-2.6.21-rc6-mm1/fs/ext3/inode.c 2007-04-09 17:24:03.000000000 -0700
+++ linux-2.6.21-rc6-mm1-test/fs/ext3/inode.c 2007-04-09 18:18:23.000000000 -0700
@@ -1767,7 +1767,6 @@ static int ext3_block_truncate_page(hand
struct inode *inode = mapping->host;
struct buffer_head *bh;
int err = 0;
- void *kaddr;
blocksize = inode->i_sb->s_blocksize;
length = blocksize - (offset & (blocksize - 1));
@@ -1779,10 +1778,7 @@ static int ext3_block_truncate_page(hand
*/
if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
ext3_should_writeback_data(inode) && PageUptodate(page)) {
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + offset, 0, length);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ zero_user_page(page, offset, length);
set_page_dirty(page);
goto unlock;
}
@@ -1835,11 +1831,7 @@ static int ext3_block_truncate_page(hand
goto unlock;
}
- kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + offset, 0, length);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
-
+ zero_user_page(page, offset, length);
BUFFER_TRACE(bh, "zeroed end of block");
err = 0;
next prev parent reply other threads:[~2007-04-11 3:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-11 3:36 [PATCH 1/13] fs: convert core functions to zero_user_page Nate Diller
2007-04-11 3:36 ` [PATCH 12/13] xfs: use zero_user_page Nate Diller
2007-04-11 3:36 ` [PATCH 10/13] reiser4: " Nate Diller
2007-04-11 3:36 ` Nate Diller [this message]
2007-04-11 3:36 ` [PATCH 3/13] ecryptfs: " Nate Diller
2007-04-11 3:36 ` [PATCH 7/13] nfs: " Nate Diller
2007-04-11 3:36 ` [PATCH 2/13] affs: " Nate Diller
2007-04-11 3:36 ` [PATCH 5/13] ext4: " Nate Diller
2007-04-11 4:14 ` Andreas Dilger
2007-04-11 3:36 ` [PATCH 8/13] ntfs: " Nate Diller
2007-04-11 3:36 ` [PATCH 9/13] ocfs2: " Nate Diller
2007-04-11 3:36 ` [PATCH 13/13] fs: deprecate memclear_highpage_flush Nate Diller
2007-04-11 5:58 ` Andrew Morton
2007-04-11 3:36 ` [PATCH 6/13] gfs2: use zero_user_page Nate Diller
2007-04-11 3:36 ` [PATCH 11/13] reiserfs: " Nate Diller
2007-04-11 5:56 ` [PATCH 1/13] fs: convert core functions to zero_user_page Andrew Morton
2007-04-11 6:14 ` Nate Diller
2007-04-11 14:54 ` Jörn Engel
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