nfsd4: more robust ignoring of WANT bits in OPEN
Mask out the WANT bits right at the start instead of on each use.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 4e41f65..5b192a2 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -315,6 +315,9 @@
if (open->op_create && open->op_claim_type != NFS4_OPEN_CLAIM_NULL)
return nfserr_inval;
+ /* We don't yet support WANT bits: */
+ open->op_share_access &= NFS4_SHARE_ACCESS_MASK;
+
/*
* RFC5661 18.51.3
* Before RECLAIM_COMPLETE done, server should deny new lock
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 5f35f35..2042805 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -2345,8 +2345,7 @@
stp->st_file = fp;
stp->st_access_bmap = 0;
stp->st_deny_bmap = 0;
- __set_bit(open->op_share_access & ~NFS4_SHARE_WANT_MASK,
- &stp->st_access_bmap);
+ __set_bit(open->op_share_access, &stp->st_access_bmap);
__set_bit(open->op_share_deny, &stp->st_deny_bmap);
stp->st_openstp = NULL;
return nfs_ok;
@@ -2690,7 +2689,7 @@
static __be32
nfs4_upgrade_open(struct svc_rqst *rqstp, struct nfs4_file *fp, struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp, struct nfsd4_open *open)
{
- u32 op_share_access = open->op_share_access & ~NFS4_SHARE_WANT_MASK;
+ u32 op_share_access = open->op_share_access;
bool new_access;
__be32 status;