On Wed, Jul 23, 2014 at 03:30:28PM +0300, Kirill A. Shutemov wrote: > On Tue, Jul 22, 2014 at 03:47:48PM -0400, Matthew Wilcox wrote: > > One of the primary uses for NV-DIMMs is to expose them as a block device > > and use a filesystem to store files on the NV-DIMM. While that works, > > it currently wastes memory and CPU time buffering the files in the page > > cache. We have support in ext2 for bypassing the page cache, but it > > has some races which are unfixable in the current design. This series > > of patches rewrite the underlying support, and add support for direct > > access to ext4. > > Matthew, as discussed before, your patchset make exessive use of > i_mmap_mutex. Are you going to address this later? Or what's the plan? Yes, it'll be addressed later. I have some ideas, but I'd like to get some experience with just how bad this single mutex is before trying to split it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>