From: Jan Kara jack@suse.cz
[ Upstream commit f54aa97fb7e5329a373f9df4e5e213ced4fc8759 ]
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@vger.kernel.org Fixes: 16d055656814 ("udf: Discard preallocation before extending file with a hole") Signed-off-by: Jan Kara jack@suse.cz Signed-off-by: Sasha Levin sashal@kernel.org --- 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 a1af2c2e1c295..7faa0a5af0260 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -438,7 +438,7 @@ static int udf_get_block(struct inode *inode, sector_t block, * Block beyond EOF and prealloc extents? Just discard preallocation * as it is not useful and complicates things. */ - if (((loff_t)block) << inode->i_blkbits > iinfo->i_lenExtents) + if (((loff_t)block) << inode->i_blkbits >= iinfo->i_lenExtents) udf_discard_prealloc(inode); udf_clear_extent_cache(inode); phys = inode_getblk(inode, block, &err, &new);