[PATCH] nfsd4: don't create on open that fails due to ERR_GRACE

In an earlier patch (commit b648330a1d741d5df8a5076b2a0a2519c69c8f41) I noted
that a too-early grace-period check was preventing us from bumping the
sequence id on open.  Unfortunately in that patch I stupidly moved the
grace-period check back too far, so now an open for create can succesfully
create the file while still returning ERR_GRACE.

The correct place for that check is after we've set the open_owner and handled
any replays, but before we actually start mucking with the filesystem.

Thanks to Avishay Traeger for reporting the bug.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 89028f2..b3f169f 100644 (file)
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -192,6 +192,14 @@ nfsd4_open(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open
        }
        if (status)
                goto out;
+
+       /* Openowner is now set, so sequence id will get bumped.  Now we need
+        * these checks before we do any creates: */
+       if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
+               return nfserr_grace;
+       if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
+               return nfserr_no_grace;
+
        switch (open->op_claim_type) {
                case NFS4_OPEN_CLAIM_DELEGATE_CUR:
                        status = nfserr_inval;

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index b92dc9e..7167dcf 100644 (file)
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1732,12 +1732,6 @@ nfsd4_process_open2(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nf
        struct nfs4_delegation *dp = NULL;
        int status;
 
-       if (nfs4_in_grace() && open->op_claim_type != NFS4_OPEN_CLAIM_PREVIOUS)
-               return nfserr_grace;
-
-       if (!nfs4_in_grace() && open->op_claim_type == NFS4_OPEN_CLAIM_PREVIOUS)
-               return nfserr_no_grace;
-
        status = nfserr_inval;
        if (!TEST_ACCESS(open->op_share_access) || !TEST_DENY(open->op_share_deny))
                goto out;