tree af9c826e357e1edd2c8f3410b98833141a154365
parent 81acbcd6c54c89a9eb09c1b9ca3bd952f6989c10
author Michael Halcrow <mhalcrow@us.ibm.com> 1192523280 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192552991 -0700

eCryptfs: remove unnecessary BUG_ON

Andrew Morton wrote:
> > +     mutex_lock(&mount_crypt_stat->global_auth_tok_list_mutex);
> > +     BUG_ON(mount_crypt_stat->num_global_auth_toks == 0);
> > +     mutex_unlock(&mount_crypt_stat->global_auth_tok_list_mutex);
>
> That's odd-looking.  If it was a bug for num_global_auth_toks to be
> zero, and if that mutex protects num_global_auth_toks then as soon
> as the lock gets dropped, another thread can make
> num_global_auth_toks zero, hence the bug is present.  Perhaps?

That was serving as an internal sanity check that should not have made
it into the final patch set in the first place. This patch removes it.

Signed-off-by: Michael Halcrow <mhalcrow@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>