nfsd/nfsd3_proc_readdir: fix buffer count and page pointers
After this commit f875a792 nfsd: allow nfsv3 readdir request to be larger. nfsv3 readdir request size can be larger than PAGE_SIZE. So if the directory been read is large enough, we can use multiple pages in rq_respages. Update buffer count and page pointers like we do in readdirplus to make this happen. Now listing a directory within 3000 files will panic because we are counting in a wrong way and would write on random page. Fixes: f875a792 "nfsd: allow nfsv3 readdir request to be larger" Signed-off-by: Murphy Zhou <jencce.kernel@gmail.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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