tree e4c211c1135a48ee853b3ec4d00623686317293a
parent 6dbe51c251a327e012439c4772097a13df43c5b8
author Al Viro <viro@zeniv.linux.org.uk> 1362960848 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1362964701 -0400

make vfree() safe to call from interrupt contexts

A bunch of RCU callbacks want to be able to do vfree() and end up with
rather kludgy schemes.  Just let vfree() do the right thing - put the
victim on llist and schedule actual __vunmap() via schedule_work(), so
that it runs from non-interrupt context.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>