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NFS client updates for Linux 4.19

Browse source 
Stable bufixes:
 - v3.17+: Fix an off-by-one in bl_map_stripe()
 - v4.9+: NFSv4 client live hangs after live data migration recovery
 - v4.18+: xprtrdma: Fix disconnect regression
 - v4.14+: Fix locking in pnfs_generic_recover_commit_reqs
 - v4.9+: Fix a sleep in atomic context in nfs4_callback_sequence()
 
 Features:
 - Add support for asynchronous server-side COPY operations
 
 Other bugfixes and cleanups:
 - Optitmizations and fixes involving NFS v4.1 / pNFS layout handling
 - Optimize lseek(fd, SEEK_CUR, 0) on directories to avoid locking
 - Immediately reschedule writeback when the server replies with an error
 - Fix excessive attribute revalidation in nfs_execute_ok()
 - Add error checking to nfs_idmap_prepare_message()
 - Use new vm_fault_t return type
 - Return a delegation when reclaiming one that the server has recalled
 - Referrals should inherit proto setting from parents
 - Make rpc_auth_create_args a const
 - Improvements to rpc_iostats tracking
 - Fix a potential reference leak when there is an error processing a callback
 - Fix rmdir / mkdir / rename nlink accounting
 - Fix updating inode change attribute
 - Fix error handling in nfsn4_sp4_select_mode()
 - Use an appropriate work queue for direct-write completion
 - Don't busy wait if NFSv4 session draining is interrupted
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Merge tag 'nfs-for-4.19-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client updates from Anna Schumaker:
 "These patches include adding async support for the v4.2 COPY
  operation. I think Bruce is planning to send the server patches for
  the next release, but I figured we could get the client side out of
  the way now since it's been in my tree for a while. This shouldn't
  cause any problems, since the server will still respond with
  synchronous copies even if the client requests async.

  Features:
   - Add support for asynchronous server-side COPY operations

  Stable bufixes:
   - Fix an off-by-one in bl_map_stripe() (v3.17+)
   - NFSv4 client live hangs after live data migration recovery (v4.9+)
   - xprtrdma: Fix disconnect regression (v4.18+)
   - Fix locking in pnfs_generic_recover_commit_reqs (v4.14+)
   - Fix a sleep in atomic context in nfs4_callback_sequence() (v4.9+)

  Other bugfixes and cleanups:
   - Optimizations and fixes involving NFS v4.1 / pNFS layout handling
   - Optimize lseek(fd, SEEK_CUR, 0) on directories to avoid locking
   - Immediately reschedule writeback when the server replies with an
     error
   - Fix excessive attribute revalidation in nfs_execute_ok()
   - Add error checking to nfs_idmap_prepare_message()
   - Use new vm_fault_t return type
   - Return a delegation when reclaiming one that the server has
     recalled
   - Referrals should inherit proto setting from parents
   - Make rpc_auth_create_args a const
   - Improvements to rpc_iostats tracking
   - Fix a potential reference leak when there is an error processing a
     callback
   - Fix rmdir / mkdir / rename nlink accounting
   - Fix updating inode change attribute
   - Fix error handling in nfsn4_sp4_select_mode()
   - Use an appropriate work queue for direct-write completion
   - Don't busy wait if NFSv4 session draining is interrupted"

* tag 'nfs-for-4.19-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (54 commits)
  pNFS: Remove unwanted optimisation of layoutget
  pNFS/flexfiles: ff_layout_pg_init_read should exit on error
  pNFS: Treat RECALLCONFLICT like DELAY...
  pNFS: When updating the stateid in layoutreturn, also update the recall range
  NFSv4: Fix a sleep in atomic context in nfs4_callback_sequence()
  NFSv4: Fix locking in pnfs_generic_recover_commit_reqs
  NFSv4: Fix a typo in nfs4_init_channel_attrs()
  NFSv4: Don't busy wait if NFSv4 session draining is interrupted
  NFS recover from destination server reboot for copies
  NFS add a simple sync nfs4_proc_commit after async COPY
  NFS handle COPY ERR_OFFLOAD_NO_REQS
  NFS send OFFLOAD_CANCEL when COPY killed
  NFS export nfs4_async_handle_error
  NFS handle COPY reply CB_OFFLOAD call race
  NFS add support for asynchronous COPY
  NFS COPY xdr handle async reply
  NFS OFFLOAD_CANCEL xdr
  NFS CB_OFFLOAD xdr
  NFS: Use an appropriate work queue for direct-write completion
  NFSv4: Fix error handling in nfs4_sp4_select_mode()
  ...
This commit is contained in:
Linus Torvalds 2018-08-23 16:03:58 -07:00
commit 53a01c9a5f
52 changed files with 924 additions and 216 deletions
Download patch file Download diff file Expand all files Collapse all files

1
fs/nfs/blocklayout/blocklayout.c
View file

@ -753,6 +753,7 @@ out:
case -ENODEV:
/* Our extent block devices are unavailable */
set_bit(NFS_LSEG_UNAVAILABLE, &lseg->pls_flags);
/* Fall through */
case 0:
return lseg;
default:

2
fs/nfs/blocklayout/dev.c
View file

@ -204,7 +204,7 @@ static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset,
chunk = div_u64(offset, dev->chunk_size);
div_u64_rem(chunk, dev->nr_children, &chunk_idx);
if (chunk_idx > dev->nr_children) {
if (chunk_idx >= dev->nr_children) {
dprintk("%s: invalid chunk idx %d (%lld/%lld)\n",
__func__, chunk_idx, offset, dev->chunk_size);
/* error, should not happen */

12
fs/nfs/callback.h
View file

@ -184,6 +184,18 @@ struct cb_notify_lock_args {
extern __be32 nfs4_callback_notify_lock(void *argp, void *resp,
struct cb_process_state *cps);
#endif /* CONFIG_NFS_V4_1 */
#ifdef CONFIG_NFS_V4_2
struct cb_offloadargs {
struct nfs_fh coa_fh;
nfs4_stateid coa_stateid;
uint32_t error;
uint64_t wr_count;
struct nfs_writeverf wr_writeverf;
};
extern __be32 nfs4_callback_offload(void *args, void *dummy,
struct cb_process_state *cps);
#endif /* CONFIG_NFS_V4_2 */
extern int check_gss_callback_principal(struct nfs_client *, struct svc_rqst *);
extern __be32 nfs4_callback_getattr(void *argp, void *resp,
struct cb_process_state *cps);

97
fs/nfs/callback_proc.c
View file

@ -215,9 +215,9 @@ static u32 pnfs_check_callback_stateid(struct pnfs_layout_hdr *lo,
{
u32 oldseq, newseq;
/* Is the stateid still not initialised? */
/* Is the stateid not initialised? */
if (!pnfs_layout_is_valid(lo))
return NFS4ERR_DELAY;
return NFS4ERR_NOMATCHING_LAYOUT;
/* Mismatched stateid? */
if (!nfs4_stateid_match_other(&lo->plh_stateid, new))
@ -273,7 +273,6 @@ static u32 initiate_file_draining(struct nfs_client *clp,
rv = pnfs_check_callback_stateid(lo, &args->cbl_stateid);
if (rv != NFS_OK)
goto unlock;
pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
/*
* Enforce RFC5661 Section 12.5.5.2.1.5 (Bulk Recall and Return)
@ -283,19 +282,23 @@ static u32 initiate_file_draining(struct nfs_client *clp,
goto unlock;
}
if (pnfs_mark_matching_lsegs_return(lo, &free_me_list,
pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
switch (pnfs_mark_matching_lsegs_return(lo, &free_me_list,
&args->cbl_range,
be32_to_cpu(args->cbl_stateid.seqid))) {
case 0:
case -EBUSY:
/* There are layout segments that need to be returned */
rv = NFS4_OK;
goto unlock;
}
break;
case -ENOENT:
/* Embrace your forgetfulness! */
rv = NFS4ERR_NOMATCHING_LAYOUT;
/* Embrace your forgetfulness! */
rv = NFS4ERR_NOMATCHING_LAYOUT;
if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) {
NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo,
&args->cbl_range);
if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) {
NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo,
&args->cbl_range);
}
}
unlock:
spin_unlock(&ino->i_lock);
@ -328,8 +331,6 @@ static u32 initiate_bulk_draining(struct nfs_client *clp,
static u32 do_callback_layoutrecall(struct nfs_client *clp,
struct cb_layoutrecallargs *args)
{
write_seqcount_begin(&clp->cl_callback_count);
write_seqcount_end(&clp->cl_callback_count);
if (args->cbl_recall_type == RETURN_FILE)
return initiate_file_draining(clp, args);
return initiate_bulk_draining(clp, args);
@ -441,11 +442,14 @@ validate_seqid(const struct nfs4_slot_table *tbl, const struct nfs4_slot *slot,
* a match. If the slot is in use and the sequence numbers match, the
* client is still waiting for a response to the original request.
*/
static bool referring_call_exists(struct nfs_client *clp,
static int referring_call_exists(struct nfs_client *clp,
uint32_t nrclists,
struct referring_call_list *rclists)
struct referring_call_list *rclists,
spinlock_t *lock)
__releases(lock)
__acquires(lock)
{
bool status = false;
int status = 0;
int i, j;
struct nfs4_session *session;
struct nfs4_slot_table *tbl;
@ -468,8 +472,10 @@ static bool referring_call_exists(struct nfs_client *clp,
for (j = 0; j < rclist->rcl_nrefcalls; j++) {
ref = &rclist->rcl_refcalls[j];
spin_unlock(lock);
status = nfs4_slot_wait_on_seqid(tbl, ref->rc_slotid,
ref->rc_sequenceid, HZ >> 1) < 0;
spin_lock(lock);
if (status)
goto out;
}
@ -546,7 +552,8 @@ __be32 nfs4_callback_sequence(void *argp, void *resp,
* related callback was received before the response to the original
* call.
*/
if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists)) {
if (referring_call_exists(clp, args->csa_nrclists, args->csa_rclists,
&tbl->slot_tbl_lock) < 0) {
status = htonl(NFS4ERR_DELAY);
goto out_unlock;
}
@ -660,3 +667,57 @@ __be32 nfs4_callback_notify_lock(void *argp, void *resp,
return htonl(NFS4_OK);
}
#endif /* CONFIG_NFS_V4_1 */
#ifdef CONFIG_NFS_V4_2
static void nfs4_copy_cb_args(struct nfs4_copy_state *cp_state,
struct cb_offloadargs *args)
{
cp_state->count = args->wr_count;
cp_state->error = args->error;
if (!args->error) {
cp_state->verf.committed = args->wr_writeverf.committed;
memcpy(&cp_state->verf.verifier.data[0],
&args->wr_writeverf.verifier.data[0],
NFS4_VERIFIER_SIZE);
}
}
__be32 nfs4_callback_offload(void *data, void *dummy,
struct cb_process_state *cps)
{
struct cb_offloadargs *args = data;
struct nfs_server *server;
struct nfs4_copy_state *copy;
bool found = false;
spin_lock(&cps->clp->cl_lock);
rcu_read_lock();
list_for_each_entry_rcu(server, &cps->clp->cl_superblocks,
client_link) {
list_for_each_entry(copy, &server->ss_copies, copies) {
if (memcmp(args->coa_stateid.other,
copy->stateid.other,
sizeof(args->coa_stateid.other)))
continue;
nfs4_copy_cb_args(copy, args);
complete(&copy->completion);
found = true;
goto out;
}
}
out:
rcu_read_unlock();
if (!found) {
copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
if (!copy) {
spin_unlock(&cps->clp->cl_lock);
return htonl(NFS4ERR_SERVERFAULT);
}
memcpy(&copy->stateid, &args->coa_stateid, NFS4_STATEID_SIZE);
nfs4_copy_cb_args(copy, args);
list_add_tail(&copy->copies, &cps->clp->pending_cb_stateids);
}
spin_unlock(&cps->clp->cl_lock);
return 0;
}
#endif /* CONFIG_NFS_V4_2 */

91
fs/nfs/callback_xdr.c
View file

@ -38,6 +38,9 @@
#define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#define CB_OP_NOTIFY_LOCK_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#endif /* CONFIG_NFS_V4_1 */
#ifdef CONFIG_NFS_V4_2
#define CB_OP_OFFLOAD_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ)
#endif /* CONFIG_NFS_V4_2 */
#define NFSDBG_FACILITY NFSDBG_CALLBACK
@ -527,7 +530,72 @@ static __be32 decode_notify_lock_args(struct svc_rqst *rqstp,
}
#endif /* CONFIG_NFS_V4_1 */
#ifdef CONFIG_NFS_V4_2
static __be32 decode_write_response(struct xdr_stream *xdr,
struct cb_offloadargs *args)
{
__be32 *p;
/* skip the always zero field */
p = read_buf(xdr, 4);
if (unlikely(!p))
goto out;
p++;
/* decode count, stable_how, verifier */
p = xdr_inline_decode(xdr, 8 + 4);
if (unlikely(!p))
goto out;
p = xdr_decode_hyper(p, &args->wr_count);
args->wr_writeverf.committed = be32_to_cpup(p);
p = xdr_inline_decode(xdr, NFS4_VERIFIER_SIZE);
if (likely(p)) {
memcpy(&args->wr_writeverf.verifier.data[0], p,
NFS4_VERIFIER_SIZE);
return 0;
}
out:
return htonl(NFS4ERR_RESOURCE);
}
static __be32 decode_offload_args(struct svc_rqst *rqstp,
struct xdr_stream *xdr,
void *data)
{
struct cb_offloadargs *args = data;
__be32 *p;
__be32 status;
/* decode fh */
status = decode_fh(xdr, &args->coa_fh);
if (unlikely(status != 0))
return status;
/* decode stateid */
status = decode_stateid(xdr, &args->coa_stateid);
if (unlikely(status != 0))
return status;
/* decode status */
p = read_buf(xdr, 4);
if (unlikely(!p))
goto out;
args->error = ntohl(*p++);
if (!args->error) {
status = decode_write_response(xdr, args);
if (unlikely(status != 0))
return status;
} else {
p = xdr_inline_decode(xdr, 8);
if (unlikely(!p))
goto out;
p = xdr_decode_hyper(p, &args->wr_count);
}
return 0;
out:
return htonl(NFS4ERR_RESOURCE);
}
#endif /* CONFIG_NFS_V4_2 */
static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str)
{
if (unlikely(xdr_stream_encode_opaque(xdr, str, len) < 0))
@ -773,7 +841,10 @@ preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op)
if (status != htonl(NFS4ERR_OP_ILLEGAL))
return status;
if (op_nr == OP_CB_OFFLOAD)
if (op_nr == OP_CB_OFFLOAD) {
*op = &callback_ops[op_nr];
return htonl(NFS_OK);
} else
return htonl(NFS4ERR_NOTSUPP);
return htonl(NFS4ERR_OP_ILLEGAL);
}
@ -883,16 +954,21 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp)
if (hdr_arg.minorversion == 0) {
cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident);
if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp))
if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) {
if (cps.clp)
nfs_put_client(cps.clp);
goto out_invalidcred;
}
}
cps.minorversion = hdr_arg.minorversion;
hdr_res.taglen = hdr_arg.taglen;
hdr_res.tag = hdr_arg.tag;
if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0)
if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) {
if (cps.clp)
nfs_put_client(cps.clp);
return rpc_system_err;
}
while (status == 0 && nops != hdr_arg.nops) {
status = process_op(nops, rqstp, &xdr_in,
rqstp->rq_argp, &xdr_out, rqstp->rq_resp,
@ -969,6 +1045,13 @@ static struct callback_op callback_ops[] = {
.res_maxsize = CB_OP_NOTIFY_LOCK_RES_MAXSZ,
},
#endif /* CONFIG_NFS_V4_1 */
#ifdef CONFIG_NFS_V4_2
[OP_CB_OFFLOAD] = {
.process_op = nfs4_callback_offload,
.decode_args = decode_offload_args,
.res_maxsize = CB_OP_OFFLOAD_RES_MAXSZ,
},
#endif /* CONFIG_NFS_V4_2 */
};
/*

1
fs/nfs/client.c
View file

@ -886,6 +886,7 @@ struct nfs_server *nfs_alloc_server(void)
INIT_LIST_HEAD(&server->delegations);
INIT_LIST_HEAD(&server->layouts);
INIT_LIST_HEAD(&server->state_owners_lru);
INIT_LIST_HEAD(&server->ss_copies);
atomic_set(&server->active, 0);

32
fs/nfs/dir.c
View file

@ -904,23 +904,29 @@ static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int whence)
dfprintk(FILE, "NFS: llseek dir(%pD2, %lld, %d)\n",
filp, offset, whence);
inode_lock(inode);
switch (whence) {
case 1:
offset += filp->f_pos;
case 0:
if (offset >= 0)
break;
default:
offset = -EINVAL;
goto out;
default:
return -EINVAL;
case SEEK_SET:
if (offset < 0)
return -EINVAL;
inode_lock(inode);
break;
case SEEK_CUR:
if (offset == 0)
return filp->f_pos;
inode_lock(inode);
offset += filp->f_pos;
if (offset < 0) {
inode_unlock(inode);
return -EINVAL;
}
}
if (offset != filp->f_pos) {
filp->f_pos = offset;
dir_ctx->dir_cookie = 0;
dir_ctx->duped = 0;
}
out:
inode_unlock(inode);
return offset;
}
@ -1032,7 +1038,7 @@ int nfs_lookup_verify_inode(struct inode *inode, unsigned int flags)
if (flags & LOOKUP_REVAL)
goto out_force;
out:
return (inode->i_nlink == 0) ? -ENOENT : 0;
return (inode->i_nlink == 0) ? -ESTALE : 0;
out_force:
if (flags & LOOKUP_RCU)
return -ECHILD;
@ -2499,7 +2505,9 @@ static int nfs_execute_ok(struct inode *inode, int mask)
struct nfs_server *server = NFS_SERVER(inode);
int ret = 0;
if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_ACCESS)) {
if (S_ISDIR(inode->i_mode))
return 0;
if (nfs_check_cache_invalid(inode, NFS_INO_INVALID_OTHER)) {
if (mask & MAY_NOT_BLOCK)
return -ECHILD;
ret = __nfs_revalidate_inode(server, inode);

2
fs/nfs/direct.c
View file

@ -758,7 +758,7 @@ static void nfs_direct_write_schedule_work(struct work_struct *work)
static void nfs_direct_write_complete(struct nfs_direct_req *dreq)
{
schedule_work(&dreq->work); /* Calls nfs_direct_write_schedule_work */
queue_work(nfsiod_workqueue, &dreq->work); /* Calls nfs_direct_write_schedule_work */
}
static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)

4
fs/nfs/file.c
View file

@ -532,13 +532,13 @@ const struct address_space_operations nfs_file_aops = {
* writable, implying that someone is about to modify the page through a
* shared-writable mapping
*/
static int nfs_vm_page_mkwrite(struct vm_fault *vmf)
static vm_fault_t nfs_vm_page_mkwrite(struct vm_fault *vmf)
{
struct page *page = vmf->page;
struct file *filp = vmf->vma->vm_file;
struct inode *inode = file_inode(filp);
unsigned pagelen;
int ret = VM_FAULT_NOPAGE;
vm_fault_t ret = VM_FAULT_NOPAGE;
struct address_space *mapping;
dfprintk(PAGECACHE, "NFS: vm_page_mkwrite(%pD2(%lu), offset %lld)\n",

31
fs/nfs/flexfilelayout/flexfilelayout.c
View file

@ -812,7 +812,6 @@ ff_layout_pg_get_read(struct nfs_pageio_descriptor *pgio,
struct nfs_page *req,
bool strict_iomode)
{
retry_strict:
pnfs_put_lseg(pgio->pg_lseg);
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
req->wb_context,
@ -825,16 +824,6 @@ retry_strict:
pgio->pg_error = PTR_ERR(pgio->pg_lseg);
pgio->pg_lseg = NULL;
}
/* If we don't have checking, do get a IOMODE_RW
* segment, and the server wants to avoid READs
* there, then retry!
*/
if (pgio->pg_lseg && !strict_iomode &&
ff_layout_avoid_read_on_rw(pgio->pg_lseg)) {
strict_iomode = true;
goto retry_strict;
}
}
static void
@ -849,14 +838,16 @@ ff_layout_pg_init_read(struct nfs_pageio_descriptor *pgio,
retry:
pnfs_generic_pg_check_layout(pgio);
/* Use full layout for now */
if (!pgio->pg_lseg)
if (!pgio->pg_lseg) {
ff_layout_pg_get_read(pgio, req, false);
else if (ff_layout_avoid_read_on_rw(pgio->pg_lseg))
if (!pgio->pg_lseg)
goto out_nolseg;
}
if (ff_layout_avoid_read_on_rw(pgio->pg_lseg)) {
ff_layout_pg_get_read(pgio, req, true);
/* If no lseg, fall back to read through mds */
if (pgio->pg_lseg == NULL)
goto out_mds;
if (!pgio->pg_lseg)
goto out_nolseg;
}
ds = ff_layout_choose_best_ds_for_read(pgio->pg_lseg, 0, &ds_idx);
if (!ds) {
@ -878,6 +869,9 @@ retry:
pgm->pg_bsize = mirror->mirror_ds->ds_versions[0].rsize;
return;
out_nolseg:
if (pgio->pg_error < 0)
return;
out_mds:
pnfs_put_lseg(pgio->pg_lseg);
pgio->pg_lseg = NULL;
@ -1323,6 +1317,7 @@ static void ff_layout_read_record_layoutstats_done(struct rpc_task *task,
FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx),
hdr->args.count,
hdr->res.count);
set_bit(NFS_LSEG_LAYOUTRETURN, &hdr->lseg->pls_flags);
}
static int ff_layout_read_prepare_common(struct rpc_task *task,
@ -1507,6 +1502,7 @@ static void ff_layout_write_record_layoutstats_done(struct rpc_task *task,
FF_LAYOUT_COMP(hdr->lseg, hdr->pgio_mirror_idx),
hdr->args.count, hdr->res.count,
hdr->res.verf->committed);
set_bit(NFS_LSEG_LAYOUTRETURN, &hdr->lseg->pls_flags);
}
static int ff_layout_write_prepare_common(struct rpc_task *task,
@ -1615,6 +1611,7 @@ static void ff_layout_commit_record_layoutstats_done(struct rpc_task *task,
nfs4_ff_layout_stat_io_end_write(task,
FF_LAYOUT_COMP(cdata->lseg, cdata->ds_commit_index),
count, count, NFS_FILE_SYNC);
set_bit(NFS_LSEG_LAYOUTRETURN, &cdata->lseg->pls_flags);
}
static void ff_layout_commit_prepare_common(struct rpc_task *task,

2
fs/nfs/nfs3acl.c
View file

@ -108,6 +108,7 @@ struct posix_acl *nfs3_get_acl(struct inode *inode, int type)
case -EPROTONOSUPPORT:
dprintk("NFS_V3_ACL extension not supported; disabling\n");
server->caps &= ~NFS_CAP_ACLS;
/* fall through */
case -ENOTSUPP:
status = -EOPNOTSUPP;
default:
@ -229,6 +230,7 @@ static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
dprintk("NFS_V3_ACL SETACL RPC not supported"
"(will not retry)\n");
server->caps &= ~NFS_CAP_ACLS;
/* fall through */
case -ENOTSUPP:
status = -EOPNOTSUPP;
}

209
fs/nfs/nfs42proc.c
View file

@ -17,6 +17,7 @@
#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_PROC
static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std);
static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep,
struct nfs_lock_context *lock, loff_t offset, loff_t len)
@ -130,6 +131,91 @@ out_unlock:
return err;
}
static int handle_async_copy(struct nfs42_copy_res *res,
struct nfs_server *server,
struct file *src,
struct file *dst,
nfs4_stateid *src_stateid)
{
struct nfs4_copy_state *copy;
int status = NFS4_OK;
bool found_pending = false;
struct nfs_open_context *ctx = nfs_file_open_context(dst);
spin_lock(&server->nfs_client->cl_lock);
list_for_each_entry(copy, &server->nfs_client->pending_cb_stateids,
copies) {
if (memcmp(&res->write_res.stateid, &copy->stateid,
NFS4_STATEID_SIZE))
continue;
found_pending = true;
list_del(&copy->copies);
break;
}
if (found_pending) {
spin_unlock(&server->nfs_client->cl_lock);
goto out;
}
copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS);
if (!copy) {
spin_unlock(&server->nfs_client->cl_lock);
return -ENOMEM;
}
memcpy(&copy->stateid, &res->write_res.stateid, NFS4_STATEID_SIZE);
init_completion(&copy->completion);
copy->parent_state = ctx->state;
list_add_tail(&copy->copies, &server->ss_copies);
spin_unlock(&server->nfs_client->cl_lock);
status = wait_for_completion_interruptible(&copy->completion);
spin_lock(&server->nfs_client->cl_lock);
list_del_init(&copy->copies);
spin_unlock(&server->nfs_client->cl_lock);
if (status == -ERESTARTSYS) {
goto out_cancel;
} else if (copy->flags) {
status = -EAGAIN;
goto out_cancel;
}
out:
res->write_res.count = copy->count;
memcpy(&res->write_res.verifier, &copy->verf, sizeof(copy->verf));
status = -copy->error;
kfree(copy);
return status;
out_cancel:
nfs42_do_offload_cancel_async(dst, &copy->stateid);
kfree(copy);
return status;
}
static int process_copy_commit(struct file *dst, loff_t pos_dst,
struct nfs42_copy_res *res)
{
struct nfs_commitres cres;
int status = -ENOMEM;
cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
if (!cres.verf)
goto out;
status = nfs4_proc_commit(dst, pos_dst, res->write_res.count, &cres);
if (status)
goto out_free;
if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
&cres.verf->verifier)) {
dprintk("commit verf differs from copy verf\n");
status = -EAGAIN;
}
out_free:
kfree(cres.verf);
out:
return status;
}
static ssize_t _nfs42_proc_copy(struct file *src,
struct nfs_lock_context *src_lock,
struct file *dst,
@ -168,9 +254,16 @@ static ssize_t _nfs42_proc_copy(struct file *src,
if (status)
return status;
res->commit_res.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
if (!res->commit_res.verf)
return -ENOMEM;
res->commit_res.verf = NULL;
if (args->sync) {
res->commit_res.verf =
kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS);
if (!res->commit_res.verf)
return -ENOMEM;
}
set_bit(NFS_CLNT_DST_SSC_COPY_STATE,
&dst_lock->open_context->state->flags);
status = nfs4_call_sync(server->client, server, &msg,
&args->seq_args, &res->seq_res, 0);
if (status == -ENOTSUPP)
@ -178,18 +271,34 @@ static ssize_t _nfs42_proc_copy(struct file *src,
if (status)
goto out;
if (nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
if (args->sync &&
nfs_write_verifier_cmp(&res->write_res.verifier.verifier,
&res->commit_res.verf->verifier)) {
status = -EAGAIN;
goto out;
}
if (!res->synchronous) {
status = handle_async_copy(res, server, src, dst,
&args->src_stateid);
if (status)
return status;
}
if ((!res->synchronous || !args->sync) &&
res->write_res.verifier.committed != NFS_FILE_SYNC) {
status = process_copy_commit(dst, pos_dst, res);
if (status)
return status;
}
truncate_pagecache_range(dst_inode, pos_dst,
pos_dst + res->write_res.count);
status = res->write_res.count;
out:
kfree(res->commit_res.verf);
if (args->sync)
kfree(res->commit_res.verf);
return status;
}
@ -206,6 +315,7 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
.dst_fh = NFS_FH(file_inode(dst)),
.dst_pos = pos_dst,
.count = count,
.sync = false,
};
struct nfs42_copy_res res;
struct nfs4_exception src_exception = {
@ -247,7 +357,11 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
if (err == -ENOTSUPP) {
err = -EOPNOTSUPP;
break;
} if (err == -EAGAIN) {
} else if (err == -EAGAIN) {
dst_exception.retry = 1;
continue;
} else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
args.sync = true;
dst_exception.retry = 1;
continue;
}
@ -264,6 +378,89 @@ out_put_src_lock:
return err;
}
struct nfs42_offloadcancel_data {
struct nfs_server *seq_server;
struct nfs42_offload_status_args args;
struct nfs42_offload_status_res res;
};
static void nfs42_offload_cancel_prepare(struct rpc_task *task, void *calldata)
{
struct nfs42_offloadcancel_data *data = calldata;
nfs4_setup_sequence(data->seq_server->nfs_client,
&data->args.osa_seq_args,
&data->res.osr_seq_res, task);
}
static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata)
{
struct nfs42_offloadcancel_data *data = calldata;
nfs41_sequence_done(task, &data->res.osr_seq_res);
if (task->tk_status &&
nfs4_async_handle_error(task, data->seq_server, NULL,
NULL) == -EAGAIN)
rpc_restart_call_prepare(task);
}
static void nfs42_free_offloadcancel_data(void *data)
{
kfree(data);
}
static const struct rpc_call_ops nfs42_offload_cancel_ops = {
.rpc_call_prepare = nfs42_offload_cancel_prepare,
.rpc_call_done = nfs42_offload_cancel_done,
.rpc_release = nfs42_free_offloadcancel_data,
};
static int nfs42_do_offload_cancel_async(struct file *dst,
nfs4_stateid *stateid)
{
struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
struct nfs42_offloadcancel_data *data = NULL;
struct nfs_open_context *ctx = nfs_file_open_context(dst);
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OFFLOAD_CANCEL],
.rpc_cred = ctx->cred,
};
struct rpc_task_setup task_setup_data = {
.rpc_client = dst_server->client,
.rpc_message = &msg,
.callback_ops = &nfs42_offload_cancel_ops,
.workqueue = nfsiod_workqueue,
.flags = RPC_TASK_ASYNC,
};
int status;
if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL))
return -EOPNOTSUPP;
data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS);
if (data == NULL)
return -ENOMEM;
data->seq_server = dst_server;
data->args.osa_src_fh = NFS_FH(file_inode(dst));
memcpy(&data->args.osa_stateid, stateid,
sizeof(data->args.osa_stateid));
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
task_setup_data.callback_data = data;
nfs4_init_sequence(&data->args.osa_seq_args, &data->res.osr_seq_res,
1, 0);
task = rpc_run_task(&task_setup_data);
if (IS_ERR(task))
return PTR_ERR(task);
status = rpc_wait_for_completion_task(task);
if (status == -ENOTSUPP)
dst_server->caps &= ~NFS_CAP_OFFLOAD_CANCEL;
rpc_put_task(task);
return status;
}
static loff_t _nfs42_proc_llseek(struct file *filep,
struct nfs_lock_context *lock, loff_t offset, int whence)
{

98
fs/nfs/nfs42xdr.c
View file

@ -26,6 +26,9 @@
NFS42_WRITE_RES_SIZE + \
1 /* cr_consecutive */ + \
1 /* cr_synchronous */)
#define encode_offload_cancel_maxsz (op_encode_hdr_maxsz + \
XDR_QUADLEN(NFS4_STATEID_SIZE))
#define decode_offload_cancel_maxsz (op_decode_hdr_maxsz)
#define encode_deallocate_maxsz (op_encode_hdr_maxsz + \
encode_fallocate_maxsz)
#define decode_deallocate_maxsz (op_decode_hdr_maxsz)
@ -75,6 +78,12 @@
decode_putfh_maxsz + \
decode_copy_maxsz + \
decode_commit_maxsz)
#define NFS4_enc_offload_cancel_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_offload_cancel_maxsz)
#define NFS4_dec_offload_cancel_sz (compound_decode_hdr_maxsz + \
decode_putfh_maxsz + \
decode_offload_cancel_maxsz)
#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
encode_putfh_maxsz + \
encode_deallocate_maxsz + \
@ -141,10 +150,18 @@ static void encode_copy(struct xdr_stream *xdr,
encode_uint64(xdr, args->count);
encode_uint32(xdr, 1); /* consecutive = true */
encode_uint32(xdr, 1); /* synchronous = true */
encode_uint32(xdr, args->sync);
encode_uint32(xdr, 0); /* src server list */
}
static void encode_offload_cancel(struct xdr_stream *xdr,
const struct nfs42_offload_status_args *args,
struct compound_hdr *hdr)
{
encode_op_hdr(xdr, OP_OFFLOAD_CANCEL, decode_offload_cancel_maxsz, hdr);
encode_nfs4_stateid(xdr, &args->osa_stateid);
}
static void encode_deallocate(struct xdr_stream *xdr,
const struct nfs42_falloc_args *args,
struct compound_hdr *hdr)
@ -256,7 +273,27 @@ static void nfs4_xdr_enc_copy(struct rpc_rqst *req,
encode_savefh(xdr, &hdr);
encode_putfh(xdr, args->dst_fh, &hdr);
encode_copy(xdr, args, &hdr);
encode_copy_commit(xdr, args, &hdr);
if (args->sync)
encode_copy_commit(xdr, args, &hdr);
encode_nops(&hdr);
}
/*
* Encode OFFLOAD_CANEL request
*/
static void nfs4_xdr_enc_offload_cancel(struct rpc_rqst *req,
struct xdr_stream *xdr,
const void *data)
{
const struct nfs42_offload_status_args *args = data;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->osa_seq_args),
};
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->osa_seq_args, &hdr);
encode_putfh(xdr, args->osa_src_fh, &hdr);
encode_offload_cancel(xdr, args, &hdr);
encode_nops(&hdr);
}
@ -353,21 +390,23 @@ static int decode_write_response(struct xdr_stream *xdr,
struct nfs42_write_res *res)
{
__be32 *p;
int status, count;
p = xdr_inline_decode(xdr, 4 + 8 + 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
/*
* We never use asynchronous mode, so warn if a server returns
* a stateid.
*/
if (unlikely(*p != 0)) {
pr_err_once("%s: server has set unrequested "
"asynchronous mode\n", __func__);
count = be32_to_cpup(p);
if (count > 1)
return -EREMOTEIO;
else if (count == 1) {
status = decode_opaque_fixed(xdr, &res->stateid,
NFS4_STATEID_SIZE);
if (unlikely(status))
goto out_overflow;
}
p++;
p = xdr_inline_decode(xdr, 8 + 4);
if (unlikely(!p))
goto out_overflow;
p = xdr_decode_hyper(p, &res->count);
res->verifier.committed = be32_to_cpup(p);
return decode_verifier(xdr, &res->verifier.verifier);
@ -413,6 +452,12 @@ static int decode_copy(struct xdr_stream *xdr, struct nfs42_copy_res *res)
return decode_copy_requirements(xdr, res);
}
static int decode_offload_cancel(struct xdr_stream *xdr,
struct nfs42_offload_status_res *res)
{
return decode_op_hdr(xdr, OP_OFFLOAD_CANCEL);
}
static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
return decode_op_hdr(xdr, OP_DEALLOCATE);
@ -507,7 +552,34 @@ static int nfs4_xdr_dec_copy(struct rpc_rqst *rqstp,
status = decode_copy(xdr, res);
if (status)
goto out;
status = decode_commit(xdr, &res->commit_res);
if (res->commit_res.verf)
status = decode_commit(xdr, &res->commit_res);
out:
return status;
}
/*
* Decode OFFLOAD_CANCEL response
*/
static int nfs4_xdr_dec_offload_cancel(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
void *data)
{
struct nfs42_offload_status_res *res = data;
struct compound_hdr hdr;
int status;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->osr_seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
if (status)
goto out;
status = decode_offload_cancel(xdr, res);
out:
return status;
}

8
fs/nfs/nfs4_fs.h
View file

@ -163,6 +163,9 @@ enum {
NFS_STATE_RECOVERY_FAILED, /* OPEN stateid state recovery failed */
NFS_STATE_MAY_NOTIFY_LOCK, /* server may CB_NOTIFY_LOCK */
NFS_STATE_CHANGE_WAIT, /* A state changing operation is outstanding */
#ifdef CONFIG_NFS_V4_2
NFS_CLNT_DST_SSC_COPY_STATE, /* dst server open state on client*/
#endif /* CONFIG_NFS_V4_2 */
};
struct nfs4_state {
@ -273,6 +276,9 @@ int nfs4_replace_transport(struct nfs_server *server,
/* nfs4proc.c */
extern int nfs4_handle_exception(struct nfs_server *, int, struct nfs4_exception *);
extern int nfs4_async_handle_error(struct rpc_task *task,
struct nfs_server *server,
struct nfs4_state *state, long *timeout);
extern int nfs4_call_sync(struct rpc_clnt *, struct nfs_server *,
struct rpc_message *, struct nfs4_sequence_args *,
struct nfs4_sequence_res *, int);
@ -505,7 +511,7 @@ extern int nfs4_sequence_done(struct rpc_task *task,
struct nfs4_sequence_res *res);
extern void nfs4_free_lock_state(struct nfs_server *server, struct nfs4_lock_state *lsp);
extern int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res);
extern const nfs4_stateid zero_stateid;
extern const nfs4_stateid invalid_stateid;

21
fs/nfs/nfs4client.c
View file

@ -156,9 +156,23 @@ nfs4_shutdown_ds_clients(struct nfs_client *clp)
}
}
static void
nfs4_cleanup_callback(struct nfs_client *clp)
{
struct nfs4_copy_state *cp_state;
while (!list_empty(&clp->pending_cb_stateids)) {
cp_state = list_entry(clp->pending_cb_stateids.next,
struct nfs4_copy_state, copies);
list_del(&cp_state->copies);
kfree(cp_state);
}
}
void nfs41_shutdown_client(struct nfs_client *clp)
{
if (nfs4_has_session(clp)) {
nfs4_cleanup_callback(clp);
nfs4_shutdown_ds_clients(clp);
nfs4_destroy_session(clp->cl_session);
nfs4_destroy_clientid(clp);
@ -202,6 +216,7 @@ struct nfs_client *nfs4_alloc_client(const struct nfs_client_initdata *cl_init)
#if IS_ENABLED(CONFIG_NFS_V4_1)
init_waitqueue_head(&clp->cl_lock_waitq);
#endif
INIT_LIST_HEAD(&clp->pending_cb_stateids);
return clp;
error:
@ -1127,7 +1142,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
nfs_server_copy_userdata(server, parent_server);
/* Get a client representation */
#ifdef CONFIG_SUNRPC_XPRT_RDMA
#if IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA)
rpc_set_port(data->addr, NFS_RDMA_PORT);
error = nfs4_set_client(server, data->hostname,
data->addr,
@ -1139,7 +1154,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
parent_client->cl_net);
if (!error)
goto init_server;
#endif /* CONFIG_SUNRPC_XPRT_RDMA */
#endif /* IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA) */
rpc_set_port(data->addr, NFS_PORT);
error = nfs4_set_client(server, data->hostname,
@ -1153,7 +1168,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
if (error < 0)
goto error;
#ifdef CONFIG_SUNRPC_XPRT_RDMA
#if IS_ENABLED(CONFIG_SUNRPC_XPRT_RDMA)
init_server:
#endif
error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);

10
fs/nfs/nfs4file.c
View file

@ -133,10 +133,15 @@ static ssize_t nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
struct file *file_out, loff_t pos_out,
size_t count, unsigned int flags)
{
ssize_t ret;
if (file_inode(file_in) == file_inode(file_out))
return -EINVAL;
return nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count);
retry:
ret = nfs42_proc_copy(file_in, pos_in, file_out, pos_out, count);
if (ret == -EAGAIN)
goto retry;
return ret;
}
static loff_t nfs4_file_llseek(struct file *filep, loff_t offset, int whence)
@ -149,6 +154,7 @@ static loff_t nfs4_file_llseek(struct file *filep, loff_t offset, int whence)
ret = nfs42_proc_llseek(filep, offset, whence);
if (ret != -ENOTSUPP)
return ret;
/* Fall through */
default:
return nfs_file_llseek(filep, offset, whence);
}

4
fs/nfs/nfs4idmap.c
View file

@ -506,6 +506,7 @@ static int nfs_idmap_prepare_message(char *desc, struct idmap *idmap,
switch (token) {
case Opt_find_uid:
im->im_type = IDMAP_TYPE_USER;
/* Fall through */
case Opt_find_gid:
im->im_conv = IDMAP_CONV_NAMETOID;
ret = match_strlcpy(im->im_name, &substr, IDMAP_NAMESZ);
@ -513,9 +514,12 @@ static int nfs_idmap_prepare_message(char *desc, struct idmap *idmap,
case Opt_find_user:
im->im_type = IDMAP_TYPE_USER;
/* Fall through */
case Opt_find_group:
im->im_conv = IDMAP_CONV_IDTONAME;
ret = match_int(&substr, &im->im_id);
if (ret)
goto out;
break;
default:

156
fs/nfs/nfs4proc.c
View file

@ -449,6 +449,7 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
stateid);
goto wait_on_recovery;
}
/* Fall through */
case -NFS4ERR_OPENMODE:
if (inode) {
int err;
@ -501,8 +502,10 @@ static int nfs4_do_handle_exception(struct nfs_server *server,
ret = -EBUSY;
break;
}
/* Fall through */
case -NFS4ERR_DELAY:
nfs_inc_server_stats(server, NFSIOS_DELAY);
/* Fall through */
case -NFS4ERR_GRACE:
case -NFS4ERR_LAYOUTTRYLATER:
case -NFS4ERR_RECALLCONFLICT:
@ -581,12 +584,19 @@ nfs4_async_handle_exception(struct rpc_task *task, struct nfs_server *server,
ret = -EIO;
return ret;
out_retry:
if (ret == 0)
if (ret == 0) {
exception->retry = 1;
/*
* For NFS4ERR_MOVED, the client transport will need to
* be recomputed after migration recovery has completed.
*/
if (errorcode == -NFS4ERR_MOVED)
rpc_task_release_transport(task);
}
return ret;
}
static int
int
nfs4_async_handle_error(struct rpc_task *task, struct nfs_server *server,
struct nfs4_state *state, long *timeout)
{
@ -1071,15 +1081,30 @@ int nfs4_call_sync(struct rpc_clnt *clnt,
return nfs4_call_sync_sequence(clnt, server, msg, args, res);
}
static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
unsigned long timestamp)
static void
nfs4_inc_nlink_locked(struct inode *inode)
{
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_OTHER;
inc_nlink(inode);
}
static void
nfs4_dec_nlink_locked(struct inode *inode)
{
NFS_I(inode)->cache_validity |= NFS_INO_INVALID_OTHER;
drop_nlink(inode);
}
static void
update_changeattr_locked(struct inode *dir, struct nfs4_change_info *cinfo,
unsigned long timestamp, unsigned long cache_validity)
{
struct nfs_inode *nfsi = NFS_I(dir);
spin_lock(&dir->i_lock);
nfsi->cache_validity |= NFS_INO_INVALID_CTIME
| NFS_INO_INVALID_MTIME
| NFS_INO_INVALID_DATA;
| NFS_INO_INVALID_DATA
| cache_validity;
if (cinfo->atomic && cinfo->before == inode_peek_iversion_raw(dir)) {
nfsi->cache_validity &= ~NFS_INO_REVAL_PAGECACHE;
nfsi->attrtimeo_timestamp = jiffies;
@ -1092,7 +1117,16 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
inode_set_iversion_raw(dir, cinfo->after);
nfsi->read_cache_jiffies = timestamp;
nfsi->attr_gencount = nfs_inc_attr_generation_counter();
nfsi->cache_validity &= ~NFS_INO_INVALID_CHANGE;
nfs_fscache_invalidate(dir);
}
static void
update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo,
unsigned long timestamp, unsigned long cache_validity)
{
spin_lock(&dir->i_lock);
update_changeattr_locked(dir, cinfo, timestamp, cache_validity);
spin_unlock(&dir->i_lock);
}
@ -1354,6 +1388,7 @@ static int can_open_delegated(struct nfs_delegation *delegation, fmode_t fmode,
case NFS4_OPEN_CLAIM_PREVIOUS:
if (!test_bit(NFS_DELEGATION_NEED_RECLAIM, &delegation->flags))
break;
/* Fall through */
default:
return 0;
}
@ -1773,6 +1808,10 @@ nfs4_opendata_check_deleg(struct nfs4_opendata *data, struct nfs4_state *state)
data->o_res.delegation_type,
&data->o_res.delegation,
data->o_res.pagemod_limit);
if (data->o_res.do_recall)
nfs_async_inode_return_delegation(state->inode,
&data->o_res.delegation);
}
/*
@ -2119,6 +2158,7 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx,
err = nfs4_open_recover_helper(opendata, FMODE_WRITE);
if (err)
break;
/* Fall through */
case FMODE_READ:
err = nfs4_open_recover_helper(opendata, FMODE_READ);
}
@ -2248,6 +2288,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
case NFS4_OPEN_CLAIM_DELEG_CUR_FH:
case NFS4_OPEN_CLAIM_DELEG_PREV_FH:
data->o_arg.open_bitmap = &nfs4_open_noattr_bitmap[0];
/* Fall through */
case NFS4_OPEN_CLAIM_FH:
task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
}
@ -2481,7 +2522,7 @@ static int _nfs4_proc_open(struct nfs4_opendata *data,
if (data->file_created ||
inode_peek_iversion_raw(dir) != o_res->cinfo.after)
update_changeattr(dir, &o_res->cinfo,
o_res->f_attr->time_start);
o_res->f_attr->time_start, 0);
}
if ((o_res->rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) == 0)
server->caps &= ~NFS_CAP_POSIX_LOCK;
@ -2843,6 +2884,9 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
nfs_save_change_attribute(d_inode(opendata->dir)));
}
/* Parse layoutget results before we check for access */
pnfs_parse_lgopen(state->inode, opendata->lgp, ctx);
ret = nfs4_opendata_access(sp->so_cred, opendata, state, fmode, flags);
if (ret != 0)
goto out;
@ -2851,8 +2895,6 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata,
nfs_inode_attach_open_context(ctx);
if (read_seqcount_retry(&sp->so_reclaim_seqcount, seq))
nfs4_schedule_stateid_recovery(server, state);
else
pnfs_parse_lgopen(state->inode, opendata->lgp, ctx);
}
out:
@ -3220,7 +3262,8 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
calldata->res.lr_res = NULL;
break;
case -NFS4ERR_OLD_STATEID:
if (nfs4_refresh_layout_stateid(&calldata->arg.lr_args->stateid,
if (nfs4_layoutreturn_refresh_stateid(&calldata->arg.lr_args->stateid,
&calldata->arg.lr_args->range,
calldata->inode))
goto lr_restart;
/* Fallthrough */
@ -4236,7 +4279,8 @@ out:
return status;
}
static int _nfs4_proc_remove(struct inode *dir, const struct qstr *name)
static int
_nfs4_proc_remove(struct inode *dir, const struct qstr *name, u32 ftype)
{
struct nfs_server *server = NFS_SERVER(dir);
struct nfs_removeargs args = {
@ -4255,8 +4299,14 @@ static int _nfs4_proc_remove(struct inode *dir, const struct qstr *name)
int status;
status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 1);
if (status == 0)
update_changeattr(dir, &res.cinfo, timestamp);
if (status == 0) {
spin_lock(&dir->i_lock);
update_changeattr_locked(dir, &res.cinfo, timestamp, 0);
/* Removing a directory decrements nlink in the parent */
if (ftype == NF4DIR && dir->i_nlink > 2)
nfs4_dec_nlink_locked(dir);
spin_unlock(&dir->i_lock);
}
return status;
}
@ -4273,7 +4323,7 @@ static int nfs4_proc_remove(struct inode *dir, struct dentry *dentry)
nfs4_inode_make_writeable(inode);
}
do {
err = _nfs4_proc_remove(dir, &dentry->d_name);
err = _nfs4_proc_remove(dir, &dentry->d_name, NF4REG);
trace_nfs4_remove(dir, &dentry->d_name, err);
err = nfs4_handle_exception(NFS_SERVER(dir), err,
&exception);
@ -4287,7 +4337,7 @@ static int nfs4_proc_rmdir(struct inode *dir, const struct qstr *name)
int err;
do {
err = _nfs4_proc_remove(dir, name);
err = _nfs4_proc_remove(dir, name, NF4DIR);
trace_nfs4_remove(dir, name, err);
err = nfs4_handle_exception(NFS_SERVER(dir), err,
&exception);
@ -4331,7 +4381,8 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir)
&data->timeout) == -EAGAIN)
return 0;
if (task->tk_status == 0)
update_changeattr(dir, &res->cinfo, res->dir_attr->time_start);
update_changeattr(dir, &res->cinfo,
res->dir_attr->time_start, 0);
return 1;
}
@ -4373,9 +4424,18 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
return 0;
if (task->tk_status == 0) {
update_changeattr(old_dir, &res->old_cinfo, res->old_fattr->time_start);
if (new_dir != old_dir)
update_changeattr(new_dir, &res->new_cinfo, res->new_fattr->time_start);
if (new_dir != old_dir) {
/* Note: If we moved a directory, nlink will change */
update_changeattr(old_dir, &res->old_cinfo,
res->old_fattr->time_start,
NFS_INO_INVALID_OTHER);
update_changeattr(new_dir, &res->new_cinfo,
res->new_fattr->time_start,
NFS_INO_INVALID_OTHER);
} else
update_changeattr(old_dir, &res->old_cinfo,
res->old_fattr->time_start,
0);
}
return 1;
}
@ -4416,7 +4476,7 @@ static int _nfs4_proc_link(struct inode *inode, struct inode *dir, const struct
status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
if (!status) {
update_changeattr(dir, &res.cinfo, res.fattr->time_start);
update_changeattr(dir, &res.cinfo, res.fattr->time_start, 0);
status = nfs_post_op_update_inode(inode, res.fattr);
if (!status)
nfs_setsecurity(inode, res.fattr, res.label);
@ -4491,8 +4551,13 @@ static int nfs4_do_create(struct inode *dir, struct dentry *dentry, struct nfs4_
int status = nfs4_call_sync(NFS_SERVER(dir)->client, NFS_SERVER(dir), &data->msg,
&data->arg.seq_args, &data->res.seq_res, 1);
if (status == 0) {
update_changeattr(dir, &data->res.dir_cinfo,
data->res.fattr->time_start);
spin_lock(&dir->i_lock);
update_changeattr_locked(dir, &data->res.dir_cinfo,
data->res.fattr->time_start, 0);
/* Creating a directory bumps nlink in the parent */
if (data->arg.ftype == NF4DIR)
nfs4_inc_nlink_locked(dir);
spin_unlock(&dir->i_lock);
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, data->res.label);
}
return status;
@ -5073,6 +5138,40 @@ static void nfs4_proc_commit_setup(struct nfs_commit_data *data, struct rpc_mess
nfs4_state_protect(server->nfs_client, NFS_SP4_MACH_CRED_COMMIT, clnt, msg);
}
static int _nfs4_proc_commit(struct file *dst, struct nfs_commitargs *args,
struct nfs_commitres *res)
{
struct inode *dst_inode = file_inode(dst);
struct nfs_server *server = NFS_SERVER(dst_inode);
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
.rpc_argp = args,
.rpc_resp = res,
};
args->fh = NFS_FH(dst_inode);
return nfs4_call_sync(server->client, server, &msg,
&args->seq_args, &res->seq_res, 1);
}
int nfs4_proc_commit(struct file *dst, __u64 offset, __u32 count, struct nfs_commitres *res)
{
struct nfs_commitargs args = {
.offset = offset,
.count = count,
};
struct nfs_server *dst_server = NFS_SERVER(file_inode(dst));
struct nfs4_exception exception = { };
int status;
do {
status = _nfs4_proc_commit(dst, &args, res);
status = nfs4_handle_exception(dst_server, status, &exception);
} while (exception.retry);
return status;
}
struct nfs4_renewdata {
struct nfs_client *client;
unsigned long timestamp;
@ -5902,7 +6001,8 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
data->res.lr_res = NULL;
break;
case -NFS4ERR_OLD_STATEID:
if (nfs4_refresh_layout_stateid(&data->args.lr_args->stateid,
if (nfs4_layoutreturn_refresh_stateid(&data->args.lr_args->stateid,
&data->args.lr_args->range,
data->inode))
goto lr_restart;
/* Fallthrough */
@ -6209,11 +6309,13 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
if (nfs4_update_lock_stateid(calldata->lsp,
&calldata->res.stateid))
break;
/* Fall through */
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_EXPIRED:
nfs4_free_revoked_stateid(calldata->server,
&calldata->arg.stateid,
task->tk_msg.rpc_cred);
/* Fall through */
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_OLD_STATEID:
case -NFS4ERR_STALE_STATEID:
@ -7727,7 +7829,7 @@ static int nfs4_sp4_select_mode(struct nfs_client *clp,
}
out:
clp->cl_sp4_flags = flags;
return 0;
return ret;
}
struct nfs41_exchange_id_data {
@ -8168,7 +8270,7 @@ static void nfs4_init_channel_attrs(struct nfs41_create_session_args *args,
args->bc_attrs.max_resp_sz = max_bc_payload;
args->bc_attrs.max_resp_sz_cached = 0;
args->bc_attrs.max_ops = NFS4_MAX_BACK_CHANNEL_OPS;
args->bc_attrs.max_reqs = min_t(unsigned short, max_session_cb_slots, 1);
args->bc_attrs.max_reqs = max_t(unsigned short, max_session_cb_slots, 1);
dprintk("%s: Back Channel : max_rqst_sz=%u max_resp_sz=%u "
"max_resp_sz_cached=%u max_ops=%u max_reqs=%u\n",
@ -8851,7 +8953,8 @@ static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
server = NFS_SERVER(lrp->args.inode);
switch (task->tk_status) {
case -NFS4ERR_OLD_STATEID:
if (nfs4_refresh_layout_stateid(&lrp->args.stateid,
if (nfs4_layoutreturn_refresh_stateid(&lrp->args.stateid,
&lrp->args.range,
lrp->args.inode))
goto out_restart;
/* Fallthrough */
@ -9554,6 +9657,7 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
| NFS_CAP_LGOPEN
| NFS_CAP_ALLOCATE
| NFS_CAP_COPY
| NFS_CAP_OFFLOAD_CANCEL
| NFS_CAP_DEALLOCATE
| NFS_CAP_SEEK
| NFS_CAP_LAYOUTSTATS

40
fs/nfs/nfs4state.c
View file

@ -274,7 +274,7 @@ static int nfs4_drain_slot_tbl(struct nfs4_slot_table *tbl)
static int nfs4_begin_drain_session(struct nfs_client *clp)
{
struct nfs4_session *ses = clp->cl_session;
int ret = 0;
int ret;
if (clp->cl_slot_tbl)
return nfs4_drain_slot_tbl(clp->cl_slot_tbl);
@ -1525,6 +1525,7 @@ restart:
default:
pr_err("NFS: %s: unhandled error %d\n",
__func__, status);
/* Fall through */
case -ENOMEM:
case -NFS4ERR_DENIED:
case -NFS4ERR_RECLAIM_BAD:
@ -1588,6 +1589,22 @@ restart:
}
clear_bit(NFS_STATE_RECLAIM_NOGRACE,
&state->flags);
#ifdef CONFIG_NFS_V4_2
if (test_bit(NFS_CLNT_DST_SSC_COPY_STATE, &state->flags)) {
struct nfs4_copy_state *copy;
spin_lock(&sp->so_server->nfs_client->cl_lock);
list_for_each_entry(copy, &sp->so_server->ss_copies, copies) {
if (memcmp(&state->stateid.other, &copy->parent_state->stateid.other, NFS4_STATEID_SIZE))
continue;
copy->flags = 1;
complete(&copy->completion);
printk("AGLO: server rebooted waking up the copy\n");
break;
}
spin_unlock(&sp->so_server->nfs_client->cl_lock);
}
#endif /* CONFIG_NFS_V4_2 */
nfs4_put_open_state(state);
spin_lock(&sp->so_lock);
goto restart;
@ -1597,6 +1614,7 @@ restart:
default:
printk(KERN_ERR "NFS: %s: unhandled error %d\n",
__func__, status);
/* Fall through */
case -ENOENT:
case -ENOMEM:
case -EACCES:
@ -1608,6 +1626,7 @@ restart:
break;
case -EAGAIN:
ssleep(1);
/* Fall through */
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_OLD_STATEID:
@ -1939,7 +1958,9 @@ static int nfs4_establish_lease(struct nfs_client *clp)
clp->cl_mvops->reboot_recovery_ops;
int status;
nfs4_begin_drain_session(clp);
status = nfs4_begin_drain_session(clp);
if (status != 0)
return status;
cred = nfs4_get_clid_cred(clp);
if (cred == NULL)
return -ENOENT;
@ -2027,7 +2048,9 @@ static int nfs4_try_migration(struct nfs_server *server, struct rpc_cred *cred)
goto out;
}
nfs4_begin_drain_session(clp);
status = nfs4_begin_drain_session(clp);
if (status != 0)
return status;
status = nfs4_replace_transport(server, locations);
if (status != 0) {
@ -2190,9 +2213,11 @@ again:
case -ETIMEDOUT:
if (clnt->cl_softrtry)
break;
/* Fall through */
case -NFS4ERR_DELAY:
case -EAGAIN:
ssleep(1);
/* Fall through */
case -NFS4ERR_STALE_CLIENTID:
dprintk("NFS: %s after status %d, retrying\n",
__func__, status);
@ -2204,6 +2229,7 @@ again:
}
if (clnt->cl_auth->au_flavor == RPC_AUTH_UNIX)
break;
/* Fall through */
case -NFS4ERR_CLID_INUSE:
case -NFS4ERR_WRONGSEC:
/* No point in retrying if we already used RPC_AUTH_UNIX */
@ -2374,7 +2400,9 @@ static int nfs4_reset_session(struct nfs_client *clp)
if (!nfs4_has_session(clp))
return 0;
nfs4_begin_drain_session(clp);
status = nfs4_begin_drain_session(clp);
if (status != 0)
return status;
cred = nfs4_get_clid_cred(clp);
status = nfs4_proc_destroy_session(clp->cl_session, cred);
switch (status) {
@ -2417,7 +2445,9 @@ static int nfs4_bind_conn_to_session(struct nfs_client *clp)
if (!nfs4_has_session(clp))
return 0;
nfs4_begin_drain_session(clp);
ret = nfs4_begin_drain_session(clp);
if (ret != 0)
return ret;
cred = nfs4_get_clid_cred(clp);
ret = nfs4_proc_bind_conn_to_session(clp, cred);
if (cred)

1
fs/nfs/nfs4xdr.c
View file

@ -7789,6 +7789,7 @@ const struct rpc_procinfo nfs4_procedures[] = {
PROC42(LAYOUTSTATS, enc_layoutstats, dec_layoutstats),
PROC42(CLONE, enc_clone, dec_clone),
PROC42(COPY, enc_copy, dec_copy),
PROC42(OFFLOAD_CANCEL, enc_offload_cancel, dec_offload_cancel),
PROC(LOOKUPP, enc_lookupp, dec_lookupp),
};

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