NFS/localio: use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit

NFS/localio: use GFP_NOIO and non-memreclaim workqueue in nfs_local_commit

nfslocaliod_workqueue is a non-memreclaim workqueue (it isn't
initialized with WQ_MEM_RECLAIM), see commit b9f5dd57f4a5
("nfs/localio: use dedicated workqueues for filesystem read and
write").

Use nfslocaliod_workqueue for LOCALIO's SYNC work.

Also, set PF_LOCAL_THROTTLE | PF_MEMALLOC_NOIO in
nfs_local_fsync_work.

Fixes: b9f5dd57f4a5 ("nfs/localio: use dedicated workqueues for filesystem read and write")
Signed-off-by: Mike Snitzer <snitzer@hammerspace.com>
Signed-off-by: Anna Schumaker <anna.schumaker@oracle.com>