[lvm-devel] [PATCH 0/4] Clean-up polldaemon to be more generic to allow re-use

[Mike Snitzer]

The polldaemon will be re-used for LVM2's snapshot-merge support.

This patchset provides the cleanup patches that a couple snapshot-merge
specific follow-on patches depend on.

NOTE: the 2/4 patch is provided as a separate patch for review purposes;
but in practice when it is committed it should be combined with the
3/4 patch to avoid reduced functionality (progress_display) if one were
to bisect.