The condition determining whether the preallocation can be used had
an off-by-one error so we didn't discard preallocation when new
allocation was just following it. This can then confuse code in
inode_getblk().
CC: stable@xxxxxxxxxxxxxxx
Fixes: 16d055656814 ("udf: Discard preallocation before extending file with a hole")
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
fs/udf/inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 6826c2aa021f..15e0d9f23c06 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -361,7 +361,7 @@ static int udf_map_block(struct inode *inode, struct udf_map_rq *map)
* Block beyond EOF and prealloc extents? Just discard preallocation
* as it is not useful and complicates things.
*/
- if (((loff_t)map->lblk) << inode->i_blkbits > iinfo->i_lenExtents)
+ if (((loff_t)map->lblk) << inode->i_blkbits >= iinfo->i_lenExtents)
udf_discard_prealloc(inode);
udf_clear_extent_cache(inode);
err = inode_getblk(inode, map);
--
2.35.3
