NFS: fix sb->s_id in nfs debug prints
NFS: fix sb->s_id in nfs debug prints

NFS bdi flush thread in ps output is printed like "flush-<major number
in decimal>:<minor number in decimal>"
For example:
$ ps aux | grep flush
 2079 root         0 SW   [flush-0:18]
                                 ^^^^

nfs_bdi_register()
==> bdi_register_dev()
==> bdi_register(bdi, NULL, "%u:%u", MAJOR(dev), MINOR(dev));
                             ^^^^^

However, NFS sb->s_id store major:minor number in hex:

nfs_initialise_sb()
==>         snprintf(sb->s_id, sizeof(sb->s_id),
                 "%x:%x", MAJOR(sb->s_dev), MINOR(sb->s_dev));
                  ^^^^^

If we enable nfs debug prints using command:
$ rpcdebug -m nfs -s all

write to a file:
$ dd if=/dev/zero of=<NFS Mount>/testfile.txt bs=32768 count=1

Without Patch:
[ 2431.032000] NFS:     0 initiated write call (req 0:12/40, 32768 bytes
@ offset 0)                                         ^^^^

With Patch:
[ 2431.032000] NFS:     0 initiated write call (req 0:18/40, 32768 bytes
@ offset 0)                                         ^^^^

We should store NFS "s->s_id" in decimal to avoid confusion between NFS
flush thread name(in ps output) and NFS debug prints.

Signed-off-by: Vivek Trivedi <8d27efd872215d9b261cee2bcbb54eeda6647549@gmail.com>
Signed-off-by: Namjae Jeon <4eaf47c25ead9675aad93689a157e819ffdaf8b3@gmail.com>
Signed-off-by: Trond Myklebust <6a1f9db795c9fc44be97d66ab114c53193bd3d13@netapp.com>

KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas