superblock_doinit emits a message for every mount

[Eric Paris <eparis@parisplace.org>]

So I recently heard a complaint that we emit a message every time a FS
is mounted.  In this case they have lots of autofs mounts happening in
turn gets lots of messages like:

Dec 18 16:32:06 buildrm55 kernel: SELinux: initialized (dev 0:39, type
nfs), uses genfs_contexts

They all come from superblock_doinit in hooks.c.

printk(KERN_INFO "SELinux: initialized (dev %s, type %s), %s\n",
       sb->s_id, sb->s_type->name,
       labeling_behaviors[sbsec->behavior-1]);

which fill their logs.  They wanted to know if we were willing to give a
way to turn such informational messages off.  I can discuss with
them /proc/sys/kernel/printk and configuring syslog to ignore
kernel.info but I wondered if anyone else had any comments or thought
about these particular messages.  Do we need them?  Are they really
anything other than debugging?

-Eric



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