v2.6.13-rc2 as-iosched.c and /sys/block/hda/queue/iosched/* values differ:
/* from ../drivers/block/as-iosched.c */
#define default_read_expire (HZ / 8)
#define default_write_expire (HZ / 4)
#define default_read_batch_expire (HZ / 2)
#define default_write_batch_expire (HZ / 8)
$ ls /sys/block/hda/queue/iosched
antic_expire
est_time
read_batch_expire
read_expire
write_batch_expire
write_expire
$ cat /sys/block/hda/queue/iosched
16
7 % exit probability
0 ms new thinktime
647336 sectors new seek distance
2000 # read_batch_expire (500ms?)
496 # read_expire (125ms?)
496 # write_batch_expire (125ms?)
992 # write_expire (250ms?)
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