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由 Christoph Hellwig 提交于
We need to zero out part of a page which beyond EOF before setting uptodate, otherwise, mapread or write will see non-zero data beyond EOF. Based on the code in fs/buffer.c and the following ext4 commit: ext4: handle EOF correctly in ext4_bio_write_page() And yes, I wish we had a good test case for it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NMark Tinguely <tinguely@sgi.com> Signed-off-by: NBen Myers <bpm@sgi.com>
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