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Commit ebc551f2 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'nfsd-5.1' of git://linux-nfs.org/~bfields/linux 

Pull NFS server updates from Bruce Fields:
 "Miscellaneous NFS server fixes.

  Probably the most visible bug is one that could artificially limit
  NFSv4.1 performance by limiting the number of oustanding rpcs from a
  single client.

  Neil Brown also gets a special mention for fixing a 14.5-year-old
  memory-corruption bug in the encoding of NFSv3 readdir responses"

* tag 'nfsd-5.1' of git://linux-nfs.org/~bfields/linux:
  nfsd: allow nfsv3 readdir request to be larger.
  nfsd: fix wrong check in write_v4_end_grace()
  nfsd: fix memory corruption caused by readdir
  nfsd: fix performance-limiting session calculation
  svcrpc: fix UDP on servers with lots of threads
  svcrdma: Remove syslog warnings in work completion handlers
  svcrdma: Squelch compiler warning when SUNRPC_DEBUG is disabled
  svcrdma: Use struct_size() in kmalloc()
  svcrpc: fix unlikely races preventing queueing of sockets
  svcrpc: svc_xprt_has_something_to_do seems a little long
  SUNRPC: Don't allow compiler optimisation of svc_xprt_release_slot()
  nfsd: fix an IS_ERR() vs NULL check
parents a5adcfca f875a792

fs/nfsd/nfs3proc.c

+15 −3
Original line number Diff line number Diff line
@@ -463,8 +463,19 @@ nfsd3_proc_readdir(struct svc_rqst *rqstp) 
					&resp->common, nfs3svc_encode_entry);

	memcpy(resp->verf, argp->verf, 8);

	resp->count = resp->buffer - argp->buffer;

	if (resp->offset)

		xdr_encode_hyper(resp->offset, argp->cookie);

	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);

			*resp->offset1 = htonl(offset & 0xffffffff);

			resp->offset1 = NULL;

		} else {

			xdr_encode_hyper(resp->offset, offset);

		}

		resp->offset = NULL;

	}



	RETURN_STATUS(nfserr);

}
@@ -533,6 +544,7 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp) 
		} else {

			xdr_encode_hyper(resp->offset, offset);

		}

		resp->offset = NULL;

	}



	RETURN_STATUS(nfserr);
@@ -576,7 +588,7 @@ nfsd3_proc_fsinfo(struct svc_rqst *rqstp) 
	resp->f_wtmax  = max_blocksize;

	resp->f_wtpref = max_blocksize;

	resp->f_wtmult = PAGE_SIZE;

	resp->f_dtpref = PAGE_SIZE;

	resp->f_dtpref = max_blocksize;

	resp->f_maxfilesize = ~(u32) 0;

	resp->f_properties = NFS3_FSF_DEFAULT;

fs/nfsd/nfs3xdr.c

+4 −1
Original line number Diff line number Diff line
@@ -573,6 +573,8 @@ int 
nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)

{

	struct nfsd3_readdirargs *args = rqstp->rq_argp;

	u32 max_blocksize = svc_max_payload(rqstp);



	p = decode_fh(p, &args->fh);

	if (!p)

		return 0;
@@ -580,7 +582,7 @@ nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p) 
	args->verf   = p; p += 2;

	args->dircount = ~0;

	args->count  = ntohl(*p++);

	args->count  = min_t(u32, args->count, PAGE_SIZE);

	args->count  = min_t(u32, args->count, max_blocksize);

	args->buffer = page_address(*(rqstp->rq_next_page++));



	return xdr_argsize_check(rqstp, p);
@@ -921,6 +923,7 @@ encode_entry(struct readdir_cd *ccd, const char *name, int namlen, 
		} else {

			xdr_encode_hyper(cd->offset, offset64);

		}

		cd->offset = NULL;

	}



	/*

fs/nfsd/nfs4callback.c

+2 −2
Original line number Diff line number Diff line
@@ -900,9 +900,9 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c 
		return PTR_ERR(client);

	}

	cred = get_backchannel_cred(clp, client, ses);

	if (IS_ERR(cred)) {

	if (!cred) {

		rpc_shutdown_client(client);

		return PTR_ERR(cred);

		return -ENOMEM;

	}

	clp->cl_cb_client = client;

	clp->cl_cb_cred = cred;

fs/nfsd/nfs4state.c

+4 −4
Original line number Diff line number Diff line
@@ -1544,16 +1544,16 @@ static u32 nfsd4_get_drc_mem(struct nfsd4_channel_attrs *ca) 
{

	u32 slotsize = slot_bytes(ca);

	u32 num = ca->maxreqs;

	int avail;

	unsigned long avail, total_avail;



	spin_lock(&nfsd_drc_lock);

	avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION,

		    nfsd_drc_max_mem - nfsd_drc_mem_used);

	total_avail = nfsd_drc_max_mem - nfsd_drc_mem_used;

	avail = min((unsigned long)NFSD_MAX_MEM_PER_SESSION, total_avail);

	/*

	 * Never use more than a third of the remaining memory,

	 * unless it's the only way to give this client a slot:

	 */

	avail = clamp_t(int, avail, slotsize, avail/3);

	avail = clamp_t(int, avail, slotsize, total_avail/3);

	num = min_t(int, num, avail / slotsize);

	nfsd_drc_mem_used += num * slotsize;

	spin_unlock(&nfsd_drc_lock);

fs/nfsd/nfsctl.c

+1 −1
Original line number Diff line number Diff line
@@ -1126,7 +1126,7 @@ static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size) 
		case 'Y':

		case 'y':

		case '1':

			if (nn->nfsd_serv)

			if (!nn->nfsd_serv)

				return -EBUSY;

			nfsd4_end_grace(nn);

			break;