The patch titled
ext3: use zero_user_page
has been added to the -mm tree. Its filename is
ext3-use-zero_user_page.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: ext3: use zero_user_page
From: Nate Diller <nate.diller@xxxxxxxxx>
Use zero_user_page() instead of open-coding it.
Signed-off-by: Nate Diller <nate.diller@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/ext3/inode.c | 12 ++----------
1 file changed, 2 insertions(+), 10 deletions(-)
diff -puN fs/ext3/inode.c~ext3-use-zero_user_page fs/ext3/inode.c
--- a/fs/ext3/inode.c~ext3-use-zero_user_page
+++ a/fs/ext3/inode.c
@@ -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, KM_USER0);
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, KM_USER0);
BUFFER_TRACE(bh, "zeroed end of block");
err = 0;
_
Patches currently in -mm which might be from nate.diller@xxxxxxxxx are
cifs-use-simple_prepare_write-to-zero-page-data.patch
ext4-use-simple_prepare_write-to-zero-page-data.patch
fs-convert-core-functions-to-zero_user_page.patch
fs-convert-core-functions-to-zero_user_page-pass-kmap-type.patch
affs-use-zero_user_page.patch
ecryptfs-use-zero_user_page.patch
ext3-use-zero_user_page.patch
ext4-use-zero_user_page.patch
gfs2-use-zero_user_page.patch
nfs-use-zero_user_page.patch
ntfs-use-zero_user_page.patch
ocfs2-use-zero_user_page.patch
reiserfs-use-zero_user_page.patch
xfs-use-zero_user_page.patch
fs-deprecate-memclear_highpage_flush.patch
reiser4-use-zero_user_page.patch
reiser4-use-simple_prepare_write-to-zero-page-data.patch
-
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