From: Jan Kara Date: Wed, 21 Dec 2022 16:45:51 +0000 (+0100) Subject: udf: Fix extension of the last extent in the file X-Git-Tag: v6.0.19~48 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8df176a823c828765d3d6fde6eed47ec1721f459;p=thirdparty%2Fkernel%2Fstable.git 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 --- diff --git a/fs/udf/inode.c b/fs/udf/inode.c index b9a83820e1adf..3c380140515da 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;