NFSv4: Don't check file access when reclaiming state

If we're reclaiming state after a reboot, or as part of returning a
delegation, we don't need to check access modes again.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 241da19..b582df8 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1221,6 +1221,7 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
        atomic_inc(&sp->so_count);
        p->o_arg.open_flags = flags;
        p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE);
+       p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
        p->o_arg.share_access = nfs4_map_atomic_open_share(server,
                        fmode, flags);
        /* don't put an ACCESS op in OPEN compound if O_EXCL, because ACCESS
@@ -1228,8 +1229,16 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
        if (!(flags & O_EXCL)) {
                /* ask server to check for all possible rights as results
                 * are cached */
-               p->o_arg.access = NFS4_ACCESS_READ | NFS4_ACCESS_MODIFY |
-                                 NFS4_ACCESS_EXTEND | NFS4_ACCESS_EXECUTE;
+               switch (p->o_arg.claim) {
+               default:
+                       break;
+               case NFS4_OPEN_CLAIM_NULL:
+               case NFS4_OPEN_CLAIM_FH:
+                       p->o_arg.access = NFS4_ACCESS_READ |
+                               NFS4_ACCESS_MODIFY |
+                               NFS4_ACCESS_EXTEND |
+                               NFS4_ACCESS_EXECUTE;
+               }
        }
        p->o_arg.clientid = server->nfs_client->cl_clientid;
        p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time);
@@ -1239,7 +1248,6 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry,
        p->o_arg.bitmask = nfs4_bitmask(server, label);
        p->o_arg.open_bitmap = &nfs4_fattr_bitmap[0];
        p->o_arg.label = nfs4_label_copy(p->a_label, label);
-       p->o_arg.claim = nfs4_map_atomic_open_claim(server, claim);
        switch (p->o_arg.claim) {
        case NFS4_OPEN_CLAIM_NULL:
        case NFS4_OPEN_CLAIM_DELEGATE_CUR: