[Midnightbsd-cvs] src: vfs_bio.c: improve description

[laffer1 at midnightbsd.org]

Log Message:
-----------
improve description

Modified Files:
--------------
    src/sys/kern:
        vfs_bio.c (r1.7 -> r1.8)
        (http://cvsweb.midnightbsd.org/src/sys/kern/vfs_bio.c?r1=1.7&r2=1.8)