On Tue, 26 Jul 2005 15:16:58 -0700 Mike Mohr <[EMAIL PROTECTED]> wrote:
> I wonder if it would be possible to somehow reclaim space that has > been previously reserved for a ramdisk without rebooting. I read the > ramdisk docs in the latest kernel source and it seems that it is not > currently possible. However, the kernel keeps track of the memory > allocated for said ramdisks; would it not be possible with root (or > even kernel) permissions to remove the flag that prevents the VM > subsystem from reclaiming that space? I realize that rot permissions > may not be high enough. In that case, could a module be written that > takes a device name as a parameter then uses it to look up the > reserved memory that device uses, then resets the necessary flag and > finally unloads itself? It would have to check that the filesystem > was unmounted, of course. > > How difficult would this be to write? Hi, ramfs (always there) and tmpfs (optional) already do this. tmpfs can be swapped out, ramfs always uses physical memory. mount -t ramfs none /mnt/blah mount -t tmpfs none /mnt/blah Regards - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
