diff options
Diffstat (limited to 'fs/nfsd/nfs3proc.c')
| -rw-r--r-- | fs/nfsd/nfs3proc.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index 7ea2fb127f6f..8675851199f8 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -435,6 +435,23 @@ nfsd3_proc_link(struct svc_rqst *rqstp) return rpc_success; } +static void nfsd3_init_dirlist_pages(struct svc_rqst *rqstp, + struct nfsd3_readdirres *resp, + int count) +{ + count = min_t(u32, count, svc_max_payload(rqstp)); + + /* Convert byte count to number of words (i.e. >> 2), + * and reserve room for the NULL ptr & eof flag (-2 words) */ + resp->buflen = (count >> 2) - 2; + + resp->buffer = page_address(*rqstp->rq_next_page); + while (count > 0) { + rqstp->rq_next_page++; + count -= PAGE_SIZE; + } +} + /* * Read a portion of a directory. */ @@ -452,16 +469,12 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp) SVCFH_fmt(&argp->fh), argp->count, (u32) argp->cookie); - /* Make sure we've room for the NULL ptr & eof flag, and shrink to - * client read size */ - count = (argp->count >> 2) - 2; + nfsd3_init_dirlist_pages(rqstp, resp, argp->count); /* Read directory and encode entries on the fly */ fh_copy(&resp->fh, &argp->fh); - resp->buflen = count; resp->common.err = nfs_ok; - resp->buffer = argp->buffer; resp->rqstp = rqstp; offset = argp->cookie; @@ -513,16 +526,12 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp) SVCFH_fmt(&argp->fh), argp->count, (u32) argp->cookie); - /* Convert byte count to number of words (i.e. >> 2), - * and reserve room for the NULL ptr & eof flag (-2 words) */ - resp->count = (argp->count >> 2) - 2; + nfsd3_init_dirlist_pages(rqstp, resp, argp->count); /* Read directory and encode entries on the fly */ fh_copy(&resp->fh, &argp->fh); resp->common.err = nfs_ok; - resp->buffer = argp->buffer; - resp->buflen = resp->count; resp->rqstp = rqstp; offset = argp->cookie; |