Re: [PATCH v4 4/5] cramfs: add mmap support
Christoph Hellwig <[email protected]>
| Newsgroups | org.kernel.vger.linux-embedded,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
On Tue, Oct 03, 2017 at 11:30:50AM -0400, Nicolas Pitre wrote: > Unless you have a better scheme altogether to suggest of course, given > the existing constraints. I still can't understand why this convoluted fault path that finds vma, attempts with all kinds of races and then tries to update things like vm_ops is even nessecary. We have direct mappings of physical address perfectly working in the DAX code (even with write support!) or in drivers using remap_pfn_range so a really good explanation why neither scheme can be used is needed first. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to [email protected]. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"[email protected]"> [email protected] </a>