From 2d1dbb030ca885bfa6570ca8a0d75f6777221540 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 21 Dec 2022 17:45:51 +0100 Subject: [PATCH] udf: Fix extension of the last extent in the file [ Upstream commit 83c7423d1eb6806d13c521d1002cc1a012111719 ] When extending the last extent in the file within the last block, we wrongly computed the length of the last extent. This is mostly a cosmetical problem since the extent does not contain any data and the length will be fixed up by following operations but still. Fixes: 1f3868f06855 ("udf: Fix extending file within last block") Signed-off-by: Jan Kara Signed-off-by: Sasha Levin --- 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 f713d108f21d..e92a16435a29 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -600,7 +600,7 @@ static void udf_do_extend_final_block(struct inode *inode, */ if (new_elen <= (last_ext->extLength & UDF_EXTENT_LENGTH_MASK)) return; - added_bytes = (last_ext->extLength & UDF_EXTENT_LENGTH_MASK) - new_elen; + added_bytes = new_elen - (last_ext->extLength & UDF_EXTENT_LENGTH_MASK); last_ext->extLength += added_bytes; UDF_I(inode)->i_lenExtents += added_bytes;