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ext3: use zero_user_page
Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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1 changed files with 2 additions and 10 deletions
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@ -1767,7 +1767,6 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
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struct inode *inode = mapping->host;
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struct buffer_head *bh;
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int err = 0;
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void *kaddr;
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blocksize = inode->i_sb->s_blocksize;
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length = blocksize - (offset & (blocksize - 1));
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@ -1779,10 +1778,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
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*/
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if (!page_has_buffers(page) && test_opt(inode->i_sb, NOBH) &&
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ext3_should_writeback_data(inode) && PageUptodate(page)) {
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kaddr = kmap_atomic(page, KM_USER0);
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memset(kaddr + offset, 0, length);
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flush_dcache_page(page);
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kunmap_atomic(kaddr, KM_USER0);
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zero_user_page(page, offset, length, KM_USER0);
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set_page_dirty(page);
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goto unlock;
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}
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@ -1835,11 +1831,7 @@ static int ext3_block_truncate_page(handle_t *handle, struct page *page,
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goto unlock;
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}
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kaddr = kmap_atomic(page, KM_USER0);
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memset(kaddr + offset, 0, length);
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flush_dcache_page(page);
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kunmap_atomic(kaddr, KM_USER0);
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zero_user_page(page, offset, length, KM_USER0);
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BUFFER_TRACE(bh, "zeroed end of block");
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err = 0;
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