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| author | Jan Kara <jack@suse.cz> | 2016-10-24 14:20:25 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-10-24 14:20:25 +1100 |
| commit | c663e29f8885269c1608b5aa6057729fa9267b35 (patch) | |
| tree | fffb106bd365d9f74d14ef9519edbf265e9f228a /Documentation | |
| parent | 64e6428ddd00f864e3ca105f914a2b6920c2bc41 (diff) | |
fs: Do to trim high file position bits in iomap_page_mkwrite_actor
iomap_page_mkwrite_actor() calls __block_write_begin_int() with position
masked as pos & ~PAGE_MASK which is equivalent to pos & (PAGE_SIZE-1).
Thus it masks off high bits of file position. However
__block_write_begin_int() expects full file position on input. This does
not cause any visible issues because all __block_write_begin_int()
really cares about are low file position bits but still it is a bug
waiting to happen.
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions