Hi, it seems that the initial email got lost (or ignored). I would like to revive it again. I've cooked up a potential fix to this issue which will follow as a reply to this email. The first patch is dumb and straightforward. It should be safe as is and also good without the follow up 2 patches which try to handle potential allocation failures in the do_munmap path more gracefully. As we still do not fail small allocations even the first patch could be simplified a bit and the retry loop replaced by a BUG_ON right away. But I felt this would better be done robust. An obvious alternative would be patching the man pages to mention the subtle difference between mlock and MAP_LOCKED semantic. I have checked debian code search and it shown some applications relying on MAP_LOCKED but I have no idea whether they really require the mlock all-or-nothing fault in semantic. Any thoughts, ideas? -- 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>