NFSv4.1: cleanup filelayout invalid deviceid handling
Move the invalid deviceid test into nfs4_fl_prepare_ds, called by the filelayout read, write, and commit routines. NFS4_DEVICE_ID_NEG_ENTRY is no longer needed. Remove redundant printk's - filelayout_mark_devid_invalid prints a KERN_WARNING. An invalid device prevents pNFS io. Signed-off-by: NAndy Adamson <andros@netapp.com> Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>
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