diff options
| author | Chuck Lever | 2020-11-09 13:13:21 -0500 |
|---|---|---|
| committer | Chuck Lever | 2021-03-22 10:18:55 -0400 |
| commit | a1409e2de4f11034c8eb30775cc3e37039a4ef13 (patch) | |
| tree | 1a057c5cc0ac182396212f5343b94b2d5aa3bf84 /fs/nfsd | |
| parent | a161e6c76aeba835e475a2f27dbbe5c37e565e94 (diff) | |
NFSD: Count bytes instead of pages in the NFSv3 READDIR encoder
Clean up: Counting the bytes used by each returned directory entry
seems less brittle to me than trying to measure consumed pages after
the fact.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs3proc.c | 31 | ||||
| -rw-r--r-- | fs/nfsd/nfs3xdr.c | 1 |
2 files changed, 3 insertions, 29 deletions
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index 90566cd01bdc..791d77363acd 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -462,10 +462,7 @@ 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; dprintk("nfsd: READDIR(3) %s %d bytes at %d\n", SVCFH_fmt(&argp->fh), @@ -476,6 +473,7 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp) /* Read directory and encode entries on the fly */ fh_copy(&resp->fh, &argp->fh); + resp->count = 0; resp->common.err = nfs_ok; resp->rqstp = rqstp; offset = argp->cookie; @@ -483,18 +481,6 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp) resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, &resp->common, nfs3svc_encode_entry); memcpy(resp->verf, argp->verf, 8); - count = 0; - for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) { - page_addr = page_address(*p); - - if (((caddr_t)resp->buffer >= page_addr) && - ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { - count += (caddr_t)resp->buffer - page_addr; - break; - } - count += PAGE_SIZE; - } - resp->count = count >> 2; nfs3svc_encode_cookie3(resp, offset); return rpc_success; @@ -509,10 +495,7 @@ nfsd3_proc_readdirplus(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; dprintk("nfsd: READDIR+(3) %s %d bytes at %d\n", SVCFH_fmt(&argp->fh), @@ -523,6 +506,7 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp) /* Read directory and encode entries on the fly */ fh_copy(&resp->fh, &argp->fh); + resp->count = 0; resp->common.err = nfs_ok; resp->rqstp = rqstp; offset = argp->cookie; @@ -539,17 +523,6 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp) resp->status = nfsd_readdir(rqstp, &resp->fh, &offset, &resp->common, nfs3svc_encode_entry_plus); memcpy(resp->verf, argp->verf, 8); - for (p = rqstp->rq_respages + 1; p < rqstp->rq_next_page; p++) { - page_addr = page_address(*p); - - if (((caddr_t)resp->buffer >= page_addr) && - ((caddr_t)resp->buffer < page_addr + PAGE_SIZE)) { - count += (caddr_t)resp->buffer - page_addr; - break; - } - count += PAGE_SIZE; - } - resp->count = count >> 2; nfs3svc_encode_cookie3(resp, offset); out: diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c index e334a1454edb..523b2dca0494 100644 --- a/fs/nfsd/nfs3xdr.c +++ b/fs/nfsd/nfs3xdr.c @@ -1364,6 +1364,7 @@ encode_entry(struct readdir_cd *ccd, const char *name, int namlen, return -EINVAL; } + cd->count += num_entry_words; cd->buflen -= num_entry_words; cd->buffer = p; cd->common.err = nfs_ok; |