On Tue, Nov 19, 2013 at 10:29:52AM -0600, James Custer wrote: > Commit bfce281c287a427d0841fadf5d59242757b4e620 killed the mm parameter to > vm_munmap. Although the mm parameter was not used in any in-tree kernel > modules, it is used by some out-of-tree modules. > > We create a new function vm_munmap_mm that has the same functionality as > vm_munmap, whereas vm_munmap uses current->mm, vm_munmap_mm takes the mm as > a paramter. > > Since this is a newly exported symbol it is marked EXPORT_SYMBOL_GPL. Which modules and what are they doing with it? More to the point, what prevents races with e.g. dumping core? And that's not an idle question - for example, fs/aio.c used to contain very unpleasant races of that kind exactly because it was playing games with modifying ->mm other than current->mm. In other words, NAK. -- 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>