udf: Do not bother looking for prealloc extents if i_lenExtents matches i_size
authorJan Kara <jack@suse.cz>
Wed, 7 Dec 2022 16:34:33 +0000 (17:34 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 21 Dec 2022 16:48:05 +0000 (17:48 +0100)
commit1cd3e9297d44a29bf9106f87e94c5ef6b248effe
tree9ba5af7fd78f03a56705e31336212da7c2c22c33
parent12a88f572d6d94b5c0b72e2d1782cc2e96ac06cf
udf: Do not bother looking for prealloc extents if i_lenExtents matches i_size

commit 6ad53f0f71c52871202a7bf096feb2c59db33fc5 upstream.

If rounded block-rounded i_lenExtents matches block rounded i_size,
there are no preallocation extents. Do not bother walking extent linked
list.

CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/udf/truncate.c