pNFS: Retry NFS4ERR_OLD_STATEID errors in layoutreturn-on-close
If our layoutreturn on close operation returns an NFS4ERR_OLD_STATEID,
then try to update the stateid and retry. We know that there should
be no further LAYOUTGET requests being launched.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index ec30dac..d602fe9 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -355,6 +355,24 @@ pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
}
/*
+ * Update the seqid of a layout stateid
+ */
+bool nfs4_refresh_layout_stateid(nfs4_stateid *dst, struct inode *inode)
+{
+ struct pnfs_layout_hdr *lo;
+ bool ret = false;
+
+ spin_lock(&inode->i_lock);
+ lo = NFS_I(inode)->layout;
+ if (lo && nfs4_stateid_match_other(dst, &lo->plh_stateid)) {
+ dst->seqid = lo->plh_stateid.seqid;
+ ret = true;
+ }
+ spin_unlock(&inode->i_lock);
+ return ret;
+}
+
+/*
* Mark a pnfs_layout_hdr and all associated layout segments as invalid
*
* In order to continue using the pnfs_layout_hdr, a full recovery
