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Merge tag 'nfsd-4.10' of git://linux-nfs.org/~bfields/linux

Sfoglia il codice sorgente 
Pull nfsd updates from Bruce Fields:
 "The one new feature is support for a new NFSv4.2 mode_umask attribute
  that makes ACL inheritance a little more useful in environments that
  default to restrictive umasks. Requires client-side support, also on
  its way for 4.10.

  Other than that, miscellaneous smaller fixes and cleanup, especially
  to the server rdma code"

[ The client side of the umask attribute was merged yesterday ]

* tag 'nfsd-4.10' of git://linux-nfs.org/~bfields/linux:
  nfsd: add support for the umask attribute
  sunrpc: use DEFINE_SPINLOCK()
  svcrdma: Further clean-up of svc_rdma_get_inv_rkey()
  svcrdma: Break up dprintk format in svc_rdma_accept()
  svcrdma: Remove unused variable in rdma_copy_tail()
  svcrdma: Remove unused variables in xprt_rdma_bc_allocate()
  svcrdma: Remove svc_rdma_op_ctxt::wc_status
  svcrdma: Remove DMA map accounting
  svcrdma: Remove BH-disabled spin locking in svc_rdma_send()
  svcrdma: Renovate sendto chunk list parsing
  svcauth_gss: Close connection when dropping an incoming message
  svcrdma: Clear xpt_bc_xps in xprt_setup_rdma_bc() error exit arm
  nfsd: constify reply_cache_stats_operations structure
  nfsd: update workqueue creation
  sunrpc: GFP_KERNEL should be GFP_NOFS in crypto code
  nfsd: catch errors in decode_fattr earlier
  nfsd: clean up supported attribute handling
  nfsd: fix error handling for clients that fail to return the layout
  nfsd: more robust allocation failure handling in nfsd_reply_cache_init
This commit is contained in:
Linus Torvalds
2016-12-16 10:48:28 -08:00
parent 9a19a6db37 47057abde5
commit 759b2656b2
18 ha cambiato i file con 206 aggiunte e 261 eliminazioni
Scarica il file Patch Scarica il file Diff Expand all files Collapse all files

5
net/sunrpc/xprtrdma/svc_rdma_backchannel.c
Vedi File

@@ -164,13 +164,9 @@ static int
xprt_rdma_bc_allocate(struct rpc_task *task)
{
struct rpc_rqst *rqst = task->tk_rqstp;
struct svc_xprt *sxprt = rqst->rq_xprt->bc_xprt;
size_t size = rqst->rq_callsize;
struct svcxprt_rdma *rdma;
struct page *page;
rdma = container_of(sxprt, struct svcxprt_rdma, sc_xprt);
if (size > PAGE_SIZE) {
WARN_ONCE(1, "svcrdma: large bc buffer request (size %zu)\n",
size);
@@ -359,6 +355,7 @@ xprt_setup_rdma_bc(struct xprt_create *args)
out_fail:
xprt_rdma_free_addresses(xprt);
args->bc_xprt->xpt_bc_xprt = NULL;
args->bc_xprt->xpt_bc_xps = NULL;
xprt_put(xprt);
xprt_free(xprt);
return ERR_PTR(-EINVAL);

21
net/sunrpc/xprtrdma/svc_rdma_recvfrom.c
Vedi File

@@ -279,7 +279,6 @@ int rdma_read_chunk_frmr(struct svcxprt_rdma *xprt,
frmr->sg);
return -ENOMEM;
}
atomic_inc(&xprt->sc_dma_used);
n = ib_map_mr_sg(frmr->mr, frmr->sg, frmr->sg_nents, NULL, PAGE_SIZE);
if (unlikely(n != frmr->sg_nents)) {
@@ -374,9 +373,7 @@ rdma_copy_tail(struct svc_rqst *rqstp, struct svc_rdma_op_ctxt *head,
u32 position, u32 byte_count, u32 page_offset, int page_no)
{
char *srcp, *destp;
int ret;
ret = 0;
srcp = head->arg.head[0].iov_base + position;
byte_count = head->arg.head[0].iov_len - position;
if (byte_count > PAGE_SIZE) {
@@ -415,6 +412,20 @@ done:
return 1;
}
/* Returns the address of the first read chunk or <nul> if no read chunk
* is present
*/
static struct rpcrdma_read_chunk *
svc_rdma_get_read_chunk(struct rpcrdma_msg *rmsgp)
{
struct rpcrdma_read_chunk *ch =
(struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0];
if (ch->rc_discrim == xdr_zero)
return NULL;
return ch;
}
static int rdma_read_chunks(struct svcxprt_rdma *xprt,
struct rpcrdma_msg *rmsgp,
struct svc_rqst *rqstp,
@@ -627,8 +638,8 @@ int svc_rdma_recvfrom(struct svc_rqst *rqstp)
goto defer;
goto out;
}
dprintk("svcrdma: processing ctxt=%p on xprt=%p, rqstp=%p, status=%d\n",
ctxt, rdma_xprt, rqstp, ctxt->wc_status);
dprintk("svcrdma: processing ctxt=%p on xprt=%p, rqstp=%p\n",
ctxt, rdma_xprt, rqstp);
atomic_inc(&rdma_stat_recv);
/* Build up the XDR from the receive buffers. */

116
net/sunrpc/xprtrdma/svc_rdma_sendto.c
Vedi File

@@ -153,76 +153,35 @@ static dma_addr_t dma_map_xdr(struct svcxprt_rdma *xprt,
return dma_addr;
}
/* Returns the address of the first read chunk or <nul> if no read chunk
* is present
/* Parse the RPC Call's transport header.
*/
struct rpcrdma_read_chunk *
svc_rdma_get_read_chunk(struct rpcrdma_msg *rmsgp)
static void svc_rdma_get_write_arrays(struct rpcrdma_msg *rmsgp,
struct rpcrdma_write_array **write,
struct rpcrdma_write_array **reply)
{
struct rpcrdma_read_chunk *ch =
(struct rpcrdma_read_chunk *)&rmsgp->rm_body.rm_chunks[0];
__be32 *p;
if (ch->rc_discrim == xdr_zero)
return NULL;
return ch;
}
p = (__be32 *)&rmsgp->rm_body.rm_chunks[0];
/* Returns the address of the first read write array element or <nul>
* if no write array list is present
*/
static struct rpcrdma_write_array *
svc_rdma_get_write_array(struct rpcrdma_msg *rmsgp)
{
if (rmsgp->rm_body.rm_chunks[0] != xdr_zero ||
rmsgp->rm_body.rm_chunks[1] == xdr_zero)
return NULL;
return (struct rpcrdma_write_array *)&rmsgp->rm_body.rm_chunks[1];
}
/* Read list */
while (*p++ != xdr_zero)
p += 5;
/* Returns the address of the first reply array element or <nul> if no
* reply array is present
*/
static struct rpcrdma_write_array *
svc_rdma_get_reply_array(struct rpcrdma_msg *rmsgp,
struct rpcrdma_write_array *wr_ary)
{
struct rpcrdma_read_chunk *rch;
struct rpcrdma_write_array *rp_ary;
/* XXX: Need to fix when reply chunk may occur with read list
* and/or write list.
*/
if (rmsgp->rm_body.rm_chunks[0] != xdr_zero ||
rmsgp->rm_body.rm_chunks[1] != xdr_zero)
return NULL;
rch = svc_rdma_get_read_chunk(rmsgp);
if (rch) {
while (rch->rc_discrim != xdr_zero)
rch++;
/* The reply chunk follows an empty write array located
* at 'rc_position' here. The reply array is at rc_target.
*/
rp_ary = (struct rpcrdma_write_array *)&rch->rc_target;
goto found_it;
/* Write list */
if (*p != xdr_zero) {
*write = (struct rpcrdma_write_array *)p;
while (*p++ != xdr_zero)
p += 1 + be32_to_cpu(*p) * 4;
} else {
*write = NULL;
p++;
}
if (wr_ary) {
int chunk = be32_to_cpu(wr_ary->wc_nchunks);
rp_ary = (struct rpcrdma_write_array *)
&wr_ary->wc_array[chunk].wc_target.rs_length;
goto found_it;
}
/* No read list, no write list */
rp_ary = (struct rpcrdma_write_array *)&rmsgp->rm_body.rm_chunks[2];
found_it:
if (rp_ary->wc_discrim == xdr_zero)
return NULL;
return rp_ary;
/* Reply chunk */
if (*p != xdr_zero)
*reply = (struct rpcrdma_write_array *)p;
else
*reply = NULL;
}
/* RPC-over-RDMA Version One private extension: Remote Invalidation.
@@ -240,31 +199,22 @@ static u32 svc_rdma_get_inv_rkey(struct rpcrdma_msg *rdma_argp,
{
struct rpcrdma_read_chunk *rd_ary;
struct rpcrdma_segment *arg_ch;
u32 inv_rkey;
inv_rkey = 0;
rd_ary = svc_rdma_get_read_chunk(rdma_argp);
if (rd_ary) {
inv_rkey = be32_to_cpu(rd_ary->rc_target.rs_handle);
goto out;
}
rd_ary = (struct rpcrdma_read_chunk *)&rdma_argp->rm_body.rm_chunks[0];
if (rd_ary->rc_discrim != xdr_zero)
return be32_to_cpu(rd_ary->rc_target.rs_handle);
if (wr_ary && be32_to_cpu(wr_ary->wc_nchunks)) {
arg_ch = &wr_ary->wc_array[0].wc_target;
inv_rkey = be32_to_cpu(arg_ch->rs_handle);
goto out;
return be32_to_cpu(arg_ch->rs_handle);
}
if (rp_ary && be32_to_cpu(rp_ary->wc_nchunks)) {
arg_ch = &rp_ary->wc_array[0].wc_target;
inv_rkey = be32_to_cpu(arg_ch->rs_handle);
goto out;
return be32_to_cpu(arg_ch->rs_handle);
}
out:
dprintk("svcrdma: Send With Invalidate rkey=%08x\n", inv_rkey);
return inv_rkey;
return 0;
}
/* Assumptions:
@@ -622,8 +572,7 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
* places this at the start of page 0.
*/
rdma_argp = page_address(rqstp->rq_pages[0]);
wr_ary = svc_rdma_get_write_array(rdma_argp);
rp_ary = svc_rdma_get_reply_array(rdma_argp, wr_ary);
svc_rdma_get_write_arrays(rdma_argp, &wr_ary, &rp_ary);
inv_rkey = 0;
if (rdma->sc_snd_w_inv)
@@ -636,7 +585,12 @@ int svc_rdma_sendto(struct svc_rqst *rqstp)
goto err0;
inline_bytes = rqstp->rq_res.len;
/* Create the RDMA response header */
/* Create the RDMA response header. xprt->xpt_mutex,
* acquired in svc_send(), serializes RPC replies. The
* code path below that inserts the credit grant value
* into each transport header runs only inside this
* critical section.
*/
ret = -ENOMEM;
res_page = alloc_page(GFP_KERNEL);
if (!res_page)

94
net/sunrpc/xprtrdma/svc_rdma_transport.c
Vedi File

@@ -41,6 +41,7 @@
*/
#include <linux/sunrpc/svc_xprt.h>
#include <linux/sunrpc/addr.h>
#include <linux/sunrpc/debug.h>
#include <linux/sunrpc/rpc_rdma.h>
#include <linux/interrupt.h>
@@ -226,25 +227,22 @@ void svc_rdma_unmap_dma(struct svc_rdma_op_ctxt *ctxt)
struct svcxprt_rdma *xprt = ctxt->xprt;
struct ib_device *device = xprt->sc_cm_id->device;
u32 lkey = xprt->sc_pd->local_dma_lkey;
unsigned int i, count;
unsigned int i;
for (count = 0, i = 0; i < ctxt->mapped_sges; i++) {
for (i = 0; i < ctxt->mapped_sges; i++) {
/*
* Unmap the DMA addr in the SGE if the lkey matches
* the local_dma_lkey, otherwise, ignore it since it is
* an FRMR lkey and will be unmapped later when the
* last WR that uses it completes.
*/
if (ctxt->sge[i].lkey == lkey) {
count++;
if (ctxt->sge[i].lkey == lkey)
ib_dma_unmap_page(device,
ctxt->sge[i].addr,
ctxt->sge[i].length,
ctxt->direction);
}
}
ctxt->mapped_sges = 0;
atomic_sub(count, &xprt->sc_dma_used);
}
void svc_rdma_put_context(struct svc_rdma_op_ctxt *ctxt, int free_pages)
@@ -398,7 +396,6 @@ static void svc_rdma_wc_receive(struct ib_cq *cq, struct ib_wc *wc)
/* WARNING: Only wc->wr_cqe and wc->status are reliable */
ctxt = container_of(cqe, struct svc_rdma_op_ctxt, cqe);
ctxt->wc_status = wc->status;
svc_rdma_unmap_dma(ctxt);
if (wc->status != IB_WC_SUCCESS)
@@ -436,7 +433,7 @@ static void svc_rdma_send_wc_common(struct svcxprt_rdma *xprt,
goto err;
out:
atomic_dec(&xprt->sc_sq_count);
atomic_inc(&xprt->sc_sq_avail);
wake_up(&xprt->sc_send_wait);
return;
@@ -946,7 +943,6 @@ void svc_rdma_put_frmr(struct svcxprt_rdma *rdma,
if (frmr) {
ib_dma_unmap_sg(rdma->sc_cm_id->device,
frmr->sg, frmr->sg_nents, frmr->direction);
atomic_dec(&rdma->sc_dma_used);
spin_lock_bh(&rdma->sc_frmr_q_lock);
WARN_ON_ONCE(!list_empty(&frmr->frmr_list));
list_add(&frmr->frmr_list, &rdma->sc_frmr_q);
@@ -973,6 +969,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
struct rpcrdma_connect_private pmsg;
struct ib_qp_init_attr qp_attr;
struct ib_device *dev;
struct sockaddr *sap;
unsigned int i;
int ret = 0;
@@ -1010,6 +1007,7 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
newxprt->sc_rq_depth = newxprt->sc_max_requests +
newxprt->sc_max_bc_requests;
newxprt->sc_sq_depth = RPCRDMA_SQ_DEPTH_MULT * newxprt->sc_rq_depth;
atomic_set(&newxprt->sc_sq_avail, newxprt->sc_sq_depth);
if (!svc_rdma_prealloc_ctxts(newxprt))
goto errout;
@@ -1052,18 +1050,12 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
qp_attr.qp_type = IB_QPT_RC;
qp_attr.send_cq = newxprt->sc_sq_cq;
qp_attr.recv_cq = newxprt->sc_rq_cq;
dprintk("svcrdma: newxprt->sc_cm_id=%p, newxprt->sc_pd=%p\n"
" cm_id->device=%p, sc_pd->device=%p\n"
" cap.max_send_wr = %d\n"
" cap.max_recv_wr = %d\n"
" cap.max_send_sge = %d\n"
" cap.max_recv_sge = %d\n",
newxprt->sc_cm_id, newxprt->sc_pd,
dev, newxprt->sc_pd->device,
qp_attr.cap.max_send_wr,
qp_attr.cap.max_recv_wr,
qp_attr.cap.max_send_sge,
qp_attr.cap.max_recv_sge);
dprintk("svcrdma: newxprt->sc_cm_id=%p, newxprt->sc_pd=%p\n",
newxprt->sc_cm_id, newxprt->sc_pd);
dprintk(" cap.max_send_wr = %d, cap.max_recv_wr = %d\n",
qp_attr.cap.max_send_wr, qp_attr.cap.max_recv_wr);
dprintk(" cap.max_send_sge = %d, cap.max_recv_sge = %d\n",
qp_attr.cap.max_send_sge, qp_attr.cap.max_recv_sge);
ret = rdma_create_qp(newxprt->sc_cm_id, newxprt->sc_pd, &qp_attr);
if (ret) {
@@ -1146,31 +1138,16 @@ static struct svc_xprt *svc_rdma_accept(struct svc_xprt *xprt)
goto errout;
}
dprintk("svcrdma: new connection %p accepted with the following "
"attributes:\n"
" local_ip : %pI4\n"
" local_port : %d\n"
" remote_ip : %pI4\n"
" remote_port : %d\n"
" max_sge : %d\n"
" max_sge_rd : %d\n"
" sq_depth : %d\n"
" max_requests : %d\n"
" ord : %d\n",
newxprt,
&((struct sockaddr_in *)&newxprt->sc_cm_id->
route.addr.src_addr)->sin_addr.s_addr,
ntohs(((struct sockaddr_in *)&newxprt->sc_cm_id->
route.addr.src_addr)->sin_port),
&((struct sockaddr_in *)&newxprt->sc_cm_id->
route.addr.dst_addr)->sin_addr.s_addr,
ntohs(((struct sockaddr_in *)&newxprt->sc_cm_id->
route.addr.dst_addr)->sin_port),
newxprt->sc_max_sge,
newxprt->sc_max_sge_rd,
newxprt->sc_sq_depth,
newxprt->sc_max_requests,
newxprt->sc_ord);
dprintk("svcrdma: new connection %p accepted:\n", newxprt);
sap = (struct sockaddr *)&newxprt->sc_cm_id->route.addr.src_addr;
dprintk(" local address : %pIS:%u\n", sap, rpc_get_port(sap));
sap = (struct sockaddr *)&newxprt->sc_cm_id->route.addr.dst_addr;
dprintk(" remote address : %pIS:%u\n", sap, rpc_get_port(sap));
dprintk(" max_sge : %d\n", newxprt->sc_max_sge);
dprintk(" max_sge_rd : %d\n", newxprt->sc_max_sge_rd);
dprintk(" sq_depth : %d\n", newxprt->sc_sq_depth);
dprintk(" max_requests : %d\n", newxprt->sc_max_requests);
dprintk(" ord : %d\n", newxprt->sc_ord);
return &newxprt->sc_xprt;
@@ -1257,9 +1234,6 @@ static void __svc_rdma_free(struct work_struct *work)
if (rdma->sc_ctxt_used != 0)
pr_err("svcrdma: ctxt still in use? (%d)\n",
rdma->sc_ctxt_used);
if (atomic_read(&rdma->sc_dma_used) != 0)
pr_err("svcrdma: dma still in use? (%d)\n",
atomic_read(&rdma->sc_dma_used));
/* Final put of backchannel client transport */
if (xprt->xpt_bc_xprt) {
@@ -1339,15 +1313,13 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr)
/* If the SQ is full, wait until an SQ entry is available */
while (1) {
spin_lock_bh(&xprt->sc_lock);
if (xprt->sc_sq_depth < atomic_read(&xprt->sc_sq_count) + wr_count) {
spin_unlock_bh(&xprt->sc_lock);
if ((atomic_sub_return(wr_count, &xprt->sc_sq_avail) < 0)) {
atomic_inc(&rdma_stat_sq_starve);
/* Wait until SQ WR available if SQ still full */
atomic_add(wr_count, &xprt->sc_sq_avail);
wait_event(xprt->sc_send_wait,
atomic_read(&xprt->sc_sq_count) <
xprt->sc_sq_depth);
atomic_read(&xprt->sc_sq_avail) > wr_count);
if (test_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags))
return -ENOTCONN;
continue;
@@ -1357,21 +1329,17 @@ int svc_rdma_send(struct svcxprt_rdma *xprt, struct ib_send_wr *wr)
svc_xprt_get(&xprt->sc_xprt);
/* Bump used SQ WR count and post */
atomic_add(wr_count, &xprt->sc_sq_count);
ret = ib_post_send(xprt->sc_qp, wr, &bad_wr);
if (ret) {
set_bit(XPT_CLOSE, &xprt->sc_xprt.xpt_flags);
atomic_sub(wr_count, &xprt->sc_sq_count);
for (i = 0; i < wr_count; i ++)
svc_xprt_put(&xprt->sc_xprt);
dprintk("svcrdma: failed to post SQ WR rc=%d, "
"sc_sq_count=%d, sc_sq_depth=%d\n",
ret, atomic_read(&xprt->sc_sq_count),
xprt->sc_sq_depth);
}
spin_unlock_bh(&xprt->sc_lock);
if (ret)
dprintk("svcrdma: failed to post SQ WR rc=%d\n", ret);
dprintk(" sc_sq_avail=%d, sc_sq_depth=%d\n",
atomic_read(&xprt->sc_sq_avail),
xprt->sc_sq_depth);
wake_up(&xprt->sc_send_wait);
}
break;
}
return ret;