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 16:32:06 +0000 (17:32 +0100)
commitdb873b770d8a1ea1ec41aa6cdc9573c4623a0293
tree94769764309448398f688b1241e76f1aed16a39f
parent1a075f4a549481ce6e8518d8379f193ccec6b746
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