Re: [4.3-rc1, regression] dax: hang on i_mmap_rwsem in generic/075

2015-09-22 Thread Ross Zwisler
On Wed, Sep 23, 2015 at 05:56:31AM +1000, Dave Chinner wrote: > On Tue, Sep 22, 2015 at 01:06:45PM +0300, Kirill A. Shutemov wrote: > > On Tue, Sep 22, 2015 at 01:05:55PM +1000, Dave Chinner wrote: > > > Hi folks, > > > > > > I'm seeing hangs like this when using DAX on XFS on 4.3-rc1 running > >

Re: [4.3-rc1, regression] dax: hang on i_mmap_rwsem in generic/075

2015-09-22 Thread Dave Chinner
On Tue, Sep 22, 2015 at 01:06:45PM +0300, Kirill A. Shutemov wrote: > On Tue, Sep 22, 2015 at 01:05:55PM +1000, Dave Chinner wrote: > > Hi folks, > > > > I'm seeing hangs like this when using DAX on XFS on 4.3-rc1 running > > xfstests generic/075 (fsx test): > > > > # echo w > /proc/sysrq-trigger

Re: [4.3-rc1, regression] dax: hang on i_mmap_rwsem in generic/075

2015-09-22 Thread Kirill A. Shutemov
On Tue, Sep 22, 2015 at 01:05:55PM +1000, Dave Chinner wrote: > Hi folks, > > I'm seeing hangs like this when using DAX on XFS on 4.3-rc1 running > xfstests generic/075 (fsx test): > > # echo w > /proc/sysrq-trigger > [71628.984872] sysrq: SysRq : Show Blocked State > [71628.985988] task