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staging: erofs: fix compression mapping beyond EOF 

Logical address of EOF LTP mapping should start at
`inode->i_size' rather than `inode->i_size - 1' to
`m_la(in)', fix it.

Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gao Xiang 2018-08-21 22:49:36 +08:00 committed by Greg Kroah-Hartman
parent 390c642e12
commit d6421a46af
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/erofs/unzip_vle.c
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@ -1548,7 +1548,7 @@ int z_erofs_map_blocks_iter(struct inode *inode,
if (unlikely(map->m_la >= inode->i_size)) {
BUG_ON(!initial);
map->m_llen = map->m_la + 1 - inode->i_size;
map->m_la = inode->i_size - 1;
map->m_la = inode->i_size;
map->m_flags = 0;
goto out;
}