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NFSD: Fix returned READDIR offset cookie

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[ Upstream commit 0a8f37fb34a96267c656f7254e69bb9a2fc89fe4 ]

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@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chuck Lever
2020-11-10 10:24:39 -05:00
committed by Greg Kroah-Hartman
parent 19285d319f
commit 29270d477f
1 changed files with 4 additions and 3 deletions
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7
fs/nfsd/nfs3proc.c
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@@ -449,6 +449,7 @@ 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;
@@ -467,7 +468,9 @@ 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;
@@ -483,8 +486,6 @@ 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);