tree 7d1a5c7b9c8bb19fef2d28e6ec84c5f0e400be61
parent 7cab8bf1601d38fd73a0a4ea40cc4892b26907cc
author Mike Snitzer <snitzer@redhat.com> 1336783401 +0100
committer Alasdair G Kergon <agk@redhat.com> 1336783401 +0100

dm mpath: check if scsi_dh module already loaded before trying to load

If the requested scsi_dh module is already loaded then skip
request_module().

Multipath table loads can hang in an unnecessary __request_module.

Reported-by: Ben Marzinski <bmarzins@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>