Hi Dave, On 05/28/2014 02:00 PM, Dave Chinner wrote:
> On Wed, May 28, 2014 at 01:19:16PM +0800, Gu Zheng wrote: >> Hi all, >> When running the latest Linus' tree, the following possible deadlock warning >> occurs. > > false positive. There isn't a deadlock between inode locks on > different filesystems. i.e. there is no dependency between shmem > inodes and xfs inodes, nor on their security contexts. Nor can you > take a page fault on a directory inode, which is the XFS inode lock > class it's complaining about. If it's really a noisy, can we avoid this? Thanks, Gu > > Fundamentally, the problem here is shmem instantiating a new inode > with the mmap_sem held. That's just plain wrong... Agree, it's better to prepare the file before going into the protection region. > > > Cheers, > > Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
