From: Trond Myklebust Date: Tue, 23 Aug 2016 15:19:33 +0000 (-0400) Subject: pNFS: The client must not do I/O to the DS if it's lease has expired X-Git-Tag: firefly_0821_release~176^2~4^2~28^2~107 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ab8cf653505e6f9194b7be41388941dcc7560ef9;p=firefly-linux-kernel-4.4.55.git pNFS: The client must not do I/O to the DS if it's lease has expired commit b88fa69eaa8649f11828158c7b65c4bcd886ebd5 upstream. Ensure that the client conforms to the normative behaviour described in RFC5661 Section 12.7.2: "If a client believes its lease has expired, it MUST NOT send I/O to the storage device until it has validated its lease." So ensure that we wait for the lease to be validated before using the layout. Signed-off-by: Trond Myklebust Signed-off-by: Greg Kroah-Hartman --- diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index bec0384499f7..ae340aca84c1 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1530,6 +1530,7 @@ pnfs_update_layout(struct inode *ino, goto out; lookup_again: + nfs4_client_recover_expired_lease(clp); first = false; spin_lock(&ino->i_lock); lo = pnfs_find_alloc_layout(ino, ctx, gfp_flags);