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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>
This commit is contained in:
Trond Myklebust 2016-11-10 15:40:34 -05:00
parent e5517c2a5a
commit 536585ccf9
1 changed files with 11 additions and 3 deletions
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14
fs/nfs/nfs4proc.c
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@ -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: