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SubjectRe: [vfs:fsfreeze] umount BUG: sleeping function called from invalid context
On Tue, Jul 31, 2012 at 09:58:15AM +0100, Al Viro wrote:
> On Tue, Jul 31, 2012 at 04:38:39PM +0800, Fengguang Wu wrote:
> > Hi Jan,
> >
> > Here is another warning for the fs freeze series.
> >
> > tree: git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git fsfreeze
> > head: 7aff72a61f45337d83ab2b7fb16d7b542db16ad8
> > commit: bc875c078f72993e6c44925cdedef5a304ca7429 [37/51] fs: Improve filesystem freezing handling
> >
> > The warning shows up reliably since commit bc875c0. The 2nd commit
> > 51205f9 triggers the same warning as the previous email.
>
> That one is fixed in the end of #fsfreeze (for testing purposes only) and then the right
> way in #for-next (by making percpu_list_lock a spinlock).

Ah sorry. It seems that you quickly pushed the fix

commit c91dc212879946b8e542773394cb56e6e3c6e1ae
CommitDate: Tue Jul 31 01:57:53 2012 +0400

[ewww][testing-only] deal with b0rken use of percpu_counter_destroy() under spinlock

while I'm still testing the slightly old head:

commit 7aff72a61f45337d83ab2b7fb16d7b542db16ad8
CommitDate: Tue Jul 31 01:21:32 2012 +0400

Documentation: Correct s_umount state for freeze_fs/unfreeze_fs

Thanks,
Fengguang


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