RFC5661 says that we can only cache a pNFS deviceid if at least one of 2
conditions is satisfied:
1) There are outstanding layouts that reference that stateid
2) The server set the NOTIFY_DEVICEID4_CHANGE and NOTIFY_DEVICEID4_DELETE
in its reply to the GETDEVICEINFO call.
Trond Myklebust (4):
NFSv4.1: Convert pNFS deviceid to use kfree_rcu()
NFSv4.1: Cleanup - don't opencode nfs4_put_deviceid_node()
NFSv4.1: Allow getdeviceinfo to return notification info back to
caller
NFSv4.1: Don't cache deviceids that have no notifications
fs/nfs/blocklayout/dev.c | 2 +-
fs/nfs/filelayout/filelayoutdev.c | 2 +-
fs/nfs/flexfilelayout/flexfilelayoutdev.c | 2 +-
fs/nfs/nfs4proc.c | 7 +++++++
fs/nfs/nfs4xdr.c | 14 +++++---------
fs/nfs/objlayout/objio_osd.c | 2 +-
fs/nfs/pnfs.h | 3 +++
fs/nfs/pnfs_dev.c | 21 +++++++++++++--------
include/linux/nfs_xdr.h | 2 ++
9 files changed, 34 insertions(+), 21 deletions(-)
--
2.1.0
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