[PATCH v1 09/42] NFSD: Fix returned READDIR offset cookie

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Code inspection shows that the server's NFSv3 READDIR implementation
handles offset cookies slightly differently than the NFSv2 READDIR,
NFSv3 READDIRPLUS, and NFSv4 READDIR implementations,
and there doesn't seem to be any need for this difference.

As a clean up, I copied the logic from nfsd3_proc_readdirplus().

Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
 fs/nfsd/nfs3proc.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index 9e289e0f439b..7ea2fb127f6f 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -444,6 +444,7 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
 	struct nfsd3_readdirargs *argp = rqstp->rq_argp;
 	struct nfsd3_readdirres  *resp = rqstp->rq_resp;
 	int		count = 0;
+	loff_t		offset;
 	struct page	**p;
 	caddr_t		page_addr = NULL;
 
@@ -462,7 +463,9 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
 	resp->common.err = nfs_ok;
 	resp->buffer = argp->buffer;
 	resp->rqstp = rqstp;
-	resp->status = nfsd_readdir(rqstp, &resp->fh, (loff_t *)&argp->cookie,
+	offset = argp->cookie;
+
+	resp->status = nfsd_readdir(rqstp, &resp->fh, &offset,
 				    &resp->common, nfs3svc_encode_entry);
 	memcpy(resp->verf, argp->verf, 8);
 	count = 0;
@@ -478,8 +481,6 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp)
 	}
 	resp->count = count >> 2;
 	if (resp->offset) {
-		loff_t offset = argp->cookie;
-
 		if (unlikely(resp->offset1)) {
 			/* we ended up with offset on a page boundary */
 			*resp->offset = htonl(offset >> 32);





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