On Mar 23, 2007, at 19:26:34, Jan Engelhardt wrote:
here's one. Allocates all the fluff dynamically. It does not create
any dev nodes by itself, so you need to do it (à la mdadm), but
you'll get all 1048576 available minors.
+static LIST_HEAD(loop_devices);
Maybe an rbtree would work better here? Maximum number of nodes
traversed to get to the bottom of the tree given 2^(20) loop devices
is 19 as opposed to the 2^(20) for a linked list. Also, to preserve
compatibility with existing userspace loop tools you should probably
always allocate one extra loop device. Keep a "highest used loopdev"
number and create the one after that so that udev will autocreate a
dev node for it.
Cheers,
Kyle Moffett
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