sysfs regression: wrong link counts

[Jiri Slaby]

Hi,

I cannot boot properly with this commit:
commit 524b6c5b39b931311dfe5a2f5abae2f5c9731676
Author: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Date:   Sun Dec 18 20:09:31 2011 -0800

    sysfs: Kill nlink counting.


1) network systemd rule doesn't start network
2) sensors complain:
   sensors_init: Kernel interface error

ad 2) look at what it does:
/* returns !0 if sysfs filesystem was found, 0 otherwise */
int sensors_init_sysfs(void)
{
        struct stat statbuf;

        snprintf(sensors_sysfs_mount, NAME_MAX, "%s", "/sys");
        if (stat(sensors_sysfs_mount, &statbuf) < 0
         || statbuf.st_nlink <= 2)      /* Empty directory */
                return 0;

        return 1;
}


So this looks like it became a part of ABI we cannot break...

A revert of this commit on the top of today's -next fixes the problem.

thanks,
-- 
js
suse labs
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