On Wed, 2012-04-11 at 11:40 -0400, Vivek Goyal wrote:
>
> Ok, that's good to know. How would we configure this special bdi? I am
> assuming there is no backing device visible in /sys/block/<device>/queue/?
> Same is true for network file systems.
root@twins:/usr/src/linux-2.6# awk '/nfs/ {print $3}' /proc/self/mountinfo | while read bdi ; do ls -la /sys/class/bdi/${bdi}/ ; done
ls: cannot access /sys/class/bdi/0:20/: No such file or directory
total 0
drwxr-xr-x 3 root root 0 2012-03-27 23:18 .
drwxr-xr-x 35 root root 0 2012-03-27 23:02 ..
-rw-r--r-- 1 root root 4096 2012-04-14 14:22 max_ratio
-rw-r--r-- 1 root root 4096 2012-04-14 14:22 min_ratio
drwxr-xr-x 2 root root 0 2012-04-14 14:22 power
-rw-r--r-- 1 root root 4096 2012-04-14 14:22 read_ahead_kb
lrwxrwxrwx 1 root root 0 2012-03-27 23:18 subsystem -> ../../../../class/bdi
-rw-r--r-- 1 root root 4096 2012-03-27 23:18 uevent
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