Commit 0c11d7a9 authored by Nate Diller's avatar Nate Diller Committed by Linus Torvalds

ext3: use zero_user_page

Use zero_user_page() instead of open-coding it.
Signed-off-by: default avatarNate Diller <nate.diller@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f36dca90
...@@ -1767,7 +1767,6 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page, ...@@ -1767,7 +1767,6 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
struct inode *inode = mapping->host; struct inode *inode = mapping->host;
struct buffer_head *bh; struct buffer_head *bh;
int err = 0; int err = 0;
void *kaddr;
blocksize = inode->i_sb->s_blocksize; blocksize = inode->i_sb->s_blocksize;
length = blocksize - (offset & (blocksize - 1)); length = blocksize - (offset & (blocksize - 1));
...@@ -1779,10 +1778,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page, ...@@ -1779,10 +1778,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
*/ */
if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) && if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
ext3_should_writeback_data(inode) && PageUptodate(page)) { ext3_should_writeback_data(inode) && PageUptodate(page)) {
kaddr = kmap_atomic(page, KM_USER0); zero_user_page(page, offset, length, KM_USER0);
memset(kaddr + offset, 0, length);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);
set_page_dirty(page); set_page_dirty(page);
goto unlock; goto unlock;
} }
...@@ -1835,11 +1831,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page, ...@@ -1835,11 +1831,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
goto unlock; goto unlock;
} }
kaddr = kmap_atomic(page, KM_USER0); zero_user_page(page, offset, length, KM_USER0);
memset(kaddr + offset, 0, length);
flush_dcache_page(page);
kunmap_atomic(kaddr, KM_USER0);
BUFFER_TRACE(bh, "zeroed end of block"); BUFFER_TRACE(bh, "zeroed end of block");
err = 0; err = 0;
......
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