tree 043c6542efd161eb0a6fc3d4dbc3efd842f0f9e3
parent 0247a0cf3e777932a0cae37ab1d8055a3881458c
author Ilya Dryomov <idryomov@gmail.com> 1461852445 +0200
committer Ilya Dryomov <idryomov@gmail.com> 1464217949 +0200

libceph: allocate ceph_osd with GFP_NOFAIL

create_osd() is called way too deep in the stack to be able to error
out in a sane way; a failing create_osd() just messes everything up.
The current req_notarget list solution is broken - the list is never
traversed as it's not entirely clear when to do it, I guess.

If we were to start traversing it at regular intervals and retrying
each request, we wouldn't be far off from what __GFP_NOFAIL is doing,
so allocate OSD sessions with __GFP_NOFAIL, at least until we come up
with a better fix.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>