tree 5b3998ca35e9975081b2ad0c9f03b40d0b6893b0
parent 80cd17578310dbaf880ae0db9240ad2218c5811a
author NeilBrown <neilb@suse.com> 1504044618 +1000
committer Mike Snitzer <snitzer@redhat.com> 1513185356 -0500

dm io: remove BIOSET_NEED_RESCUER flag from bios bioset

The BIOSET_NEED_RESCUER flag is only needed when a make_request_fn might
do two allocations from the one bioset, and the second one could block
until the first bio completes.

dm_io() is called from make_request_fn() context.  The closest it comes
to multiple allocations is in chunk_io() in dm-snap-persistent.  But
there the code uses a separate thread to avoid problems.

So BIOSET_NEED_RESCUER is not needed.

Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>