[PATCH 8/8] staging: erofs: fix compression mapping beyond EOF

Chao Yu
2018-08-12T14:02:54Z

From: Gao Xiang <gaoxiang25@huawei.com>

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>
---
drivers/staging/erofs/unzip_vle.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/erofs/unzip_vle.c b/drivers/staging/erofs/unzip_vle.c
index 6c5b0a312592..2f47498eb1fe 100644
--- a/drivers/staging/erofs/unzip_vle.c
+++ b/drivers/staging/erofs/unzip_vle.c
@@ -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;
}
--
2.18.0