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Commit 1fbf3e48 authored by Linus Torvalds's avatar Linus Torvalds
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Merge tag 'nfs-for-5.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs 

Pull NFS client updates from Trond Myklebust:
 "Highlights include:

  Stable fixes:
   - Fixes for NFS I/O request leakages
   - Fix error handling paths in the NFS I/O recoalescing code
   - Reinitialise NFSv4.1 sequence results before retransmitting a
     request
   - Fix a soft lockup in the delegation recovery code
   - Bulk destroy of layouts needs to be safe w.r.t. umount
   - Prevent thundering herd issues when the SUNRPC socket is not
     connected
   - Respect RPC call timeouts when retrying transmission

  Features:
   - Convert rpc auth layer to use xdr_streams
   - Config option to disable insecure RPCSEC_GSS crypto types
   - Reduce size of RPC receive buffers
   - Readdirplus optimization by cache mechanism
   - Convert SUNRPC socket send code to use iov_iter()
   - SUNRPC micro-optimisations to avoid indirect calls
   - Add support for the pNFS LAYOUTERROR operation and use it with the
     pNFS/flexfiles driver
   - Add trace events to report non-zero NFS status codes
   - Various removals of unnecessary dprintks

  Bugfixes and cleanups:
   - Fix a number of sparse warnings and documentation format warnings
   - Fix nfs_parse_devname to not modify it's argument
   - Fix potential corruption of page being written through pNFS/blocks
   - fix xfstest generic/099 failures on nfsv3
   - Avoid NFSv4.1 "false retries" when RPC calls are interrupted
   - Abort I/O early if the pNFS/flexfiles layout segment was
     invalidated
   - Avoid unnecessary pNFS/flexfiles layout invalidations"

* tag 'nfs-for-5.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (90 commits)
  SUNRPC: Take the transport send lock before binding+connecting
  SUNRPC: Micro-optimise when the task is known not to be sleeping
  SUNRPC: Check whether the task was transmitted before rebind/reconnect
  SUNRPC: Remove redundant calls to RPC_IS_QUEUED()
  SUNRPC: Clean up
  SUNRPC: Respect RPC call timeouts when retrying transmission
  SUNRPC: Fix up RPC back channel transmission
  SUNRPC: Prevent thundering herd when the socket is not connected
  SUNRPC: Allow dynamic allocation of back channel slots
  NFSv4.1: Bump the default callback session slot count to 16
  SUNRPC: Convert remaining GFP_NOIO, and GFP_NOWAIT sites in sunrpc
  NFS/flexfiles: Clean up mirror DS initialisation
  NFS/flexfiles: Remove dead code in ff_layout_mirror_valid()
  NFS/flexfile: Simplify nfs4_ff_layout_select_ds_stateid()
  NFS/flexfile: Simplify nfs4_ff_layout_ds_version()
  NFS/flexfiles: Simplify ff_layout_get_ds_cred()
  NFS/flexfiles: Simplify nfs4_ff_find_or_create_ds_client()
  NFS/flexfiles: Simplify nfs4_ff_layout_select_ds_fh()
  NFS/flexfiles: Speed up read failover when DSes are down
  NFS/flexfiles: Don't invalidate DS deviceids for being unresponsive
  ...
parents f88c5942 4d6c671a
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Showing with 3366 additions and 2203 deletions
fs/lockd/clnt4xdr.c
View file @ 1fbf3e48
......@@ -74,17 +74,6 @@ static void nlm4_compute_offsets(const struct nlm_lock *lock,
*l_len = loff_t_to_s64(fl->fl_end - fl->fl_start + 1);
}
/*
* Handle decode buffer overflows out-of-line.
*/
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
dprintk("lockd: %s prematurely hit the end of our receive buffer. "
"Remaining buffer length is %tu words.\n",
func, xdr->end - xdr->p);
}
/*
* Encode/decode NLMv4 basic data types
*
......@@ -176,7 +165,6 @@ static int decode_cookie(struct xdr_stream *xdr,
dprintk("NFS: returned cookie was too long: %u\n", length);
return -EIO;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
......@@ -236,7 +224,6 @@ static int decode_nlm4_stat(struct xdr_stream *xdr, __be32 *stat)
__func__, be32_to_cpup(p));
return -EIO;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
......@@ -309,7 +296,6 @@ static int decode_nlm4_holder(struct xdr_stream *xdr, struct nlm_res *result)
out:
return error;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
......
fs/lockd/clntxdr.c
View file @ 1fbf3e48
......@@ -70,17 +70,6 @@ static void nlm_compute_offsets(const struct nlm_lock *lock,
*l_len = loff_t_to_s32(fl->fl_end - fl->fl_start + 1);
}
/*
* Handle decode buffer overflows out-of-line.
*/
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
dprintk("lockd: %s prematurely hit the end of our receive buffer. "
"Remaining buffer length is %tu words.\n",
func, xdr->end - xdr->p);
}
/*
* Encode/decode NLMv3 basic data types
*
......@@ -173,7 +162,6 @@ static int decode_cookie(struct xdr_stream *xdr,
dprintk("NFS: returned cookie was too long: %u\n", length);
return -EIO;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
......@@ -231,7 +219,6 @@ static int decode_nlm_stat(struct xdr_stream *xdr,
__func__, be32_to_cpup(p));
return -EIO;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
......@@ -303,7 +290,6 @@ static int decode_nlm_holder(struct xdr_stream *xdr, struct nlm_res *result)
out:
return error;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
......
fs/nfs/callback_xdr.c
View file @ 1fbf3e48
......@@ -72,16 +72,6 @@ static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p)
return xdr_ressize_check(rqstp, p);
}
static __be32 *read_buf(struct xdr_stream *xdr, size_t nbytes)
{
__be32 *p;
p = xdr_inline_decode(xdr, nbytes);
if (unlikely(p == NULL))
printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n");
return p;
}
static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len,
const char **str, size_t maxlen)
{
......@@ -98,13 +88,13 @@ static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh)
{
__be32 *p;
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
fh->size = ntohl(*p);
if (fh->size > NFS4_FHSIZE)
return htonl(NFS4ERR_BADHANDLE);
p = read_buf(xdr, fh->size);
p = xdr_inline_decode(xdr, fh->size);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
memcpy(&fh->data[0], p, fh->size);
......@@ -117,11 +107,11 @@ static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
__be32 *p;
unsigned int attrlen;
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
attrlen = ntohl(*p);
p = read_buf(xdr, attrlen << 2);
p = xdr_inline_decode(xdr, attrlen << 2);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
if (likely(attrlen > 0))
......@@ -135,7 +125,7 @@ static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid)
{
__be32 *p;
p = read_buf(xdr, NFS4_STATEID_SIZE);
p = xdr_inline_decode(xdr, NFS4_STATEID_SIZE);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
memcpy(stateid->data, p, NFS4_STATEID_SIZE);
......@@ -156,7 +146,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
status = decode_string(xdr, &hdr->taglen, &hdr->tag, CB_OP_TAGLEN_MAXSZ);
if (unlikely(status != 0))
return status;
p = read_buf(xdr, 12);
p = xdr_inline_decode(xdr, 12);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
hdr->minorversion = ntohl(*p++);
......@@ -176,7 +166,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op)
{
__be32 *p;
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE_HDR);
*op = ntohl(*p);
......@@ -205,7 +195,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp,
status = decode_delegation_stateid(xdr, &args->stateid);
if (unlikely(status != 0))
return status;
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
args->truncate = ntohl(*p);
......@@ -227,7 +217,7 @@ static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp,
__be32 status = 0;
uint32_t iomode;
p = read_buf(xdr, 4 * sizeof(uint32_t));
p = xdr_inline_decode(xdr, 4 * sizeof(uint32_t));
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
......@@ -245,14 +235,14 @@ static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp,
if (unlikely(status != 0))
return status;
p = read_buf(xdr, 2 * sizeof(uint64_t));
p = xdr_inline_decode(xdr, 2 * sizeof(uint64_t));
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
p = xdr_decode_hyper(p, &args->cbl_range.offset);
p = xdr_decode_hyper(p, &args->cbl_range.length);
return decode_layout_stateid(xdr, &args->cbl_stateid);
} else if (args->cbl_recall_type == RETURN_FSID) {
p = read_buf(xdr, 2 * sizeof(uint64_t));
p = xdr_inline_decode(xdr, 2 * sizeof(uint64_t));
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
p = xdr_decode_hyper(p, &args->cbl_fsid.major);
......@@ -275,7 +265,7 @@ __be32 decode_devicenotify_args(struct svc_rqst *rqstp,
args->ndevs = 0;
/* Num of device notifications */
p = read_buf(xdr, sizeof(uint32_t));
p = xdr_inline_decode(xdr, sizeof(uint32_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto out;
......@@ -298,7 +288,8 @@ __be32 decode_devicenotify_args(struct svc_rqst *rqstp,
for (i = 0; i < n; i++) {
struct cb_devicenotifyitem *dev = &args->devs[i];
p = read_buf(xdr, (4 * sizeof(uint32_t)) + NFS4_DEVICEID4_SIZE);
p = xdr_inline_decode(xdr, (4 * sizeof(uint32_t)) +
NFS4_DEVICEID4_SIZE);
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto err;
......@@ -329,7 +320,7 @@ __be32 decode_devicenotify_args(struct svc_rqst *rqstp,
p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE);
if (dev->cbd_layout_type == NOTIFY_DEVICEID4_CHANGE) {
p = read_buf(xdr, sizeof(uint32_t));
p = xdr_inline_decode(xdr, sizeof(uint32_t));
if (unlikely(p == NULL)) {
status = htonl(NFS4ERR_BADXDR);
goto err;
......@@ -359,7 +350,7 @@ static __be32 decode_sessionid(struct xdr_stream *xdr,
{
__be32 *p;
p = read_buf(xdr, NFS4_MAX_SESSIONID_LEN);
p = xdr_inline_decode(xdr, NFS4_MAX_SESSIONID_LEN);
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
......@@ -379,13 +370,13 @@ static __be32 decode_rc_list(struct xdr_stream *xdr,
goto out;
status = htonl(NFS4ERR_RESOURCE);
p = read_buf(xdr, sizeof(uint32_t));
p = xdr_inline_decode(xdr, sizeof(uint32_t));
if (unlikely(p == NULL))
goto out;
rc_list->rcl_nrefcalls = ntohl(*p++);
if (rc_list->rcl_nrefcalls) {
p = read_buf(xdr,
p = xdr_inline_decode(xdr,
rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t));
if (unlikely(p == NULL))
goto out;
......@@ -418,7 +409,7 @@ static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp,
if (status)
return status;
p = read_buf(xdr, 5 * sizeof(uint32_t));
p = xdr_inline_decode(xdr, 5 * sizeof(uint32_t));
if (unlikely(p == NULL))
return htonl(NFS4ERR_RESOURCE);
......@@ -461,7 +452,7 @@ static __be32 decode_recallany_args(struct svc_rqst *rqstp,
uint32_t bitmap[2];
__be32 *p, status;
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
args->craa_objs_to_keep = ntohl(*p++);
......@@ -480,7 +471,7 @@ static __be32 decode_recallslot_args(struct svc_rqst *rqstp,
struct cb_recallslotargs *args = argp;
__be32 *p;
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
args->crsa_target_highest_slotid = ntohl(*p++);
......@@ -492,14 +483,14 @@ static __be32 decode_lockowner(struct xdr_stream *xdr, struct cb_notify_lock_arg
__be32 *p;
unsigned int len;
p = read_buf(xdr, 12);
p = xdr_inline_decode(xdr, 12);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
p = xdr_decode_hyper(p, &args->cbnl_owner.clientid);
len = be32_to_cpu(*p);
p = read_buf(xdr, len);
p = xdr_inline_decode(xdr, len);
if (unlikely(p == NULL))
return htonl(NFS4ERR_BADXDR);
......@@ -537,7 +528,7 @@ static __be32 decode_write_response(struct xdr_stream *xdr,
__be32 *p;
/* skip the always zero field */
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out;
p++;
......@@ -577,7 +568,7 @@ static __be32 decode_offload_args(struct svc_rqst *rqstp,
return status;
/* decode status */
p = read_buf(xdr, 4);
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out;
args->error = ntohl(*p++);
......@@ -943,10 +934,11 @@ static __be32 nfs4_callback_compound(struct svc_rqst *rqstp)
};
unsigned int nops = 0;
xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base);
xdr_init_decode(&xdr_in, &rqstp->rq_arg,
rqstp->rq_arg.head[0].iov_base, NULL);
p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len);
xdr_init_encode(&xdr_out, &rqstp->rq_res, p);
xdr_init_encode(&xdr_out, &rqstp->rq_res, p, NULL);
status = decode_compound_hdr_arg(&xdr_in, &hdr_arg);
if (status == htonl(NFS4ERR_RESOURCE))
......
fs/nfs/delegation.c
View file @ 1fbf3e48
......@@ -229,6 +229,8 @@ static struct inode *nfs_delegation_grab_inode(struct nfs_delegation *delegation
spin_lock(&delegation->lock);
if (delegation->inode != NULL)
inode = igrab(delegation->inode);
if (!inode)
set_bit(NFS_DELEGATION_INODE_FREEING, &delegation->flags);
spin_unlock(&delegation->lock);
return inode;
}
......@@ -681,7 +683,7 @@ void nfs_expire_all_delegations(struct nfs_client *clp)
/**
* nfs_super_return_all_delegations - return delegations for one superblock
* @sb: sb to process
* @server: pointer to nfs_server to process
*
*/
void nfs_server_return_all_delegations(struct nfs_server *server)
......@@ -944,10 +946,11 @@ void nfs_delegation_reap_unclaimed(struct nfs_client *clp)
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
list_for_each_entry_rcu(delegation, &server->delegations,
super_list) {
if (test_bit(NFS_DELEGATION_RETURNING,
&delegation->flags))
continue;
if (test_bit(NFS_DELEGATION_NEED_RECLAIM,
if (test_bit(NFS_DELEGATION_INODE_FREEING,
&delegation->flags) ||
test_bit(NFS_DELEGATION_RETURNING,
&delegation->flags) ||
test_bit(NFS_DELEGATION_NEED_RECLAIM,
&delegation->flags) == 0)
continue;
if (!nfs_sb_active(server->super))
......@@ -1053,10 +1056,11 @@ void nfs_reap_expired_delegations(struct nfs_client *clp)
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
list_for_each_entry_rcu(delegation, &server->delegations,
super_list) {
if (test_bit(NFS_DELEGATION_RETURNING,
&delegation->flags))
continue;
if (test_bit(NFS_DELEGATION_TEST_EXPIRED,
if (test_bit(NFS_DELEGATION_INODE_FREEING,
&delegation->flags) ||
test_bit(NFS_DELEGATION_RETURNING,
&delegation->flags) ||
test_bit(NFS_DELEGATION_TEST_EXPIRED,
&delegation->flags) == 0)
continue;
if (!nfs_sb_active(server->super))
......
fs/nfs/delegation.h
View file @ 1fbf3e48
......@@ -34,6 +34,7 @@ enum {
NFS_DELEGATION_RETURNING,
NFS_DELEGATION_REVOKED,
NFS_DELEGATION_TEST_EXPIRED,
NFS_DELEGATION_INODE_FREEING,
};
int nfs_inode_set_delegation(struct inode *inode, const struct cred *cred,
......
fs/nfs/dir.c
View file @ 1fbf3e48
......@@ -139,12 +139,19 @@ struct nfs_cache_array {
struct nfs_cache_array_entry array[0];
};
struct readdirvec {
unsigned long nr;
unsigned long index;
struct page *pages[NFS_MAX_READDIR_RAPAGES];
};
typedef int (*decode_dirent_t)(struct xdr_stream *, struct nfs_entry *, bool);
typedef struct {
struct file *file;
struct page *page;
struct dir_context *ctx;
unsigned long page_index;
struct readdirvec pvec;
u64 *dir_cookie;
u64 last_cookie;
loff_t current_index;
......@@ -524,6 +531,10 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
struct nfs_cache_array *array;
unsigned int count = 0;
int status;
int max_rapages = NFS_MAX_READDIR_RAPAGES;
desc->pvec.index = desc->page_index;
desc->pvec.nr = 0;
scratch = alloc_page(GFP_KERNEL);
if (scratch == NULL)
......@@ -548,20 +559,40 @@ int nfs_readdir_page_filler(nfs_readdir_descriptor_t *desc, struct nfs_entry *en
if (desc->plus)
nfs_prime_dcache(file_dentry(desc->file), entry);
status = nfs_readdir_add_to_array(entry, page);
status = nfs_readdir_add_to_array(entry, desc->pvec.pages[desc->pvec.nr]);
if (status == -ENOSPC) {
desc->pvec.nr++;
if (desc->pvec.nr == max_rapages)
break;
status = nfs_readdir_add_to_array(entry, desc->pvec.pages[desc->pvec.nr]);
}
if (status != 0)
break;
} while (!entry->eof);
/*
* page and desc->pvec.pages[0] are valid, don't need to check
* whether or not to be NULL.
*/
copy_highpage(page, desc->pvec.pages[0]);
out_nopages:
if (count == 0 || (status == -EBADCOOKIE && entry->eof != 0)) {
array = kmap(page);
array = kmap_atomic(desc->pvec.pages[desc->pvec.nr]);
array->eof_index = array->size;
status = 0;
kunmap(page);
kunmap_atomic(array);
}
put_page(scratch);
/*
* desc->pvec.nr > 0 means at least one page was completely filled,
* we should return -ENOSPC. Otherwise function
* nfs_readdir_xdr_to_array will enter infinite loop.
*/
if (desc->pvec.nr > 0)
return -ENOSPC;
return status;
}
......@@ -574,8 +605,8 @@ void nfs_readdir_free_pages(struct page **pages, unsigned int npages)
}
/*
* nfs_readdir_large_page will allocate pages that must be freed with a call
* to nfs_readdir_free_pagearray
* nfs_readdir_alloc_pages() will allocate pages that must be freed with a call
* to nfs_readdir_free_pages()
*/
static
int nfs_readdir_alloc_pages(struct page **pages, unsigned int npages)
......@@ -595,6 +626,24 @@ int nfs_readdir_alloc_pages(struct page **pages, unsigned int npages)
return -ENOMEM;
}
/*
* nfs_readdir_rapages_init initialize rapages by nfs_cache_array structure.
*/
static
void nfs_readdir_rapages_init(nfs_readdir_descriptor_t *desc)
{
struct nfs_cache_array *array;
int max_rapages = NFS_MAX_READDIR_RAPAGES;
int index;
for (index = 0; index < max_rapages; index++) {
array = kmap_atomic(desc->pvec.pages[index]);
memset(array, 0, sizeof(struct nfs_cache_array));
array->eof_index = -1;
kunmap_atomic(array);
}
}
static
int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page, struct inode *inode)
{
......@@ -605,6 +654,12 @@ int nfs_readdir_xdr_to_array(nfs_readdir_descriptor_t *desc, struct page *page,
int status = -ENOMEM;
unsigned int array_size = ARRAY_SIZE(pages);
/*
* This means we hit readdir rdpages miss, the preallocated rdpages
* are useless, the preallocate rdpages should be reinitialized.
*/
nfs_readdir_rapages_init(desc);
entry.prev_cookie = 0;
entry.cookie = desc->last_cookie;
entry.eof = 0;
......@@ -664,9 +719,24 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page* page)
struct inode *inode = file_inode(desc->file);
int ret;
ret = nfs_readdir_xdr_to_array(desc, page, inode);
if (ret < 0)
goto error;
/*
* If desc->page_index in range desc->pvec.index and
* desc->pvec.index + desc->pvec.nr, we get readdir cache hit.
*/
if (desc->page_index >= desc->pvec.index &&
desc->page_index < (desc->pvec.index + desc->pvec.nr)) {
/*
* page and desc->pvec.pages[x] are valid, don't need to check
* whether or not to be NULL.
*/
copy_highpage(page, desc->pvec.pages[desc->page_index - desc->pvec.index]);
ret = 0;
} else {
ret = nfs_readdir_xdr_to_array(desc, page, inode);
if (ret < 0)
goto error;
}
SetPageUptodate(page);
if (invalidate_inode_pages2_range(inode->i_mapping, page->index + 1, -1) < 0) {
......@@ -831,6 +901,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
*desc = &my_desc;
struct nfs_open_dir_context *dir_ctx = file->private_data;
int res = 0;
int max_rapages = NFS_MAX_READDIR_RAPAGES;
dfprintk(FILE, "NFS: readdir(%pD2) starting at cookie %llu\n",
file, (long long)ctx->pos);
......@@ -850,6 +921,12 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
desc->decode = NFS_PROTO(inode)->decode_dirent;
desc->plus = nfs_use_readdirplus(inode, ctx);
res = nfs_readdir_alloc_pages(desc->pvec.pages, max_rapages);
if (res < 0)
return -ENOMEM;
nfs_readdir_rapages_init(desc);
if (ctx->pos == 0 || nfs_attribute_cache_expired(inode))
res = nfs_revalidate_mapping(inode, file->f_mapping);
if (res < 0)
......@@ -885,6 +962,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
break;
} while (!desc->eof);
out:
nfs_readdir_free_pages(desc->pvec.pages, max_rapages);
if (res > 0)
res = 0;
dfprintk(FILE, "NFS: readdir(%pD2) returns %d\n", file, res);
......@@ -945,7 +1023,7 @@ static int nfs_fsync_dir(struct file *filp, loff_t start, loff_t end,
/**
* nfs_force_lookup_revalidate - Mark the directory as having changed
* @dir - pointer to directory inode
* @dir: pointer to directory inode
*
* This forces the revalidation code in nfs_lookup_revalidate() to do a
* full lookup on all child dentries of 'dir' whenever a change occurs
......@@ -1649,7 +1727,7 @@ nfs4_do_lookup_revalidate(struct inode *dir, struct dentry *dentry,
reval_dentry:
if (flags & LOOKUP_RCU)
return -ECHILD;
return nfs_lookup_revalidate_dentry(dir, dentry, inode);;
return nfs_lookup_revalidate_dentry(dir, dentry, inode);
full_reval:
return nfs_do_lookup_revalidate(dir, dentry, flags);
......
fs/nfs/direct.c
View file @ 1fbf3e48
......@@ -428,7 +428,7 @@ static void nfs_direct_read_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}
static void nfs_read_sync_pgio_error(struct list_head *head)
static void nfs_read_sync_pgio_error(struct list_head *head, int error)
{
struct nfs_page *req;
......@@ -664,8 +664,7 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
list_for_each_entry_safe(req, tmp, &reqs, wb_list) {
if (!nfs_pageio_add_request(&desc, req)) {
nfs_list_remove_request(req);
nfs_list_add_request(req, &failed);
nfs_list_move_request(req, &failed);
spin_lock(&cinfo.inode->i_lock);
dreq->flags = 0;
if (desc.pg_error < 0)
......@@ -821,7 +820,7 @@ static void nfs_direct_write_completion(struct nfs_pgio_header *hdr)
hdr->release(hdr);
}
static void nfs_write_sync_pgio_error(struct list_head *head)
static void nfs_write_sync_pgio_error(struct list_head *head, int error)
{
struct nfs_page *req;
......
fs/nfs/file.c
View file @ 1fbf3e48
......@@ -89,8 +89,8 @@ EXPORT_SYMBOL_GPL(nfs_file_release);
/**
* nfs_revalidate_size - Revalidate the file size
* @inode - pointer to inode struct
* @file - pointer to struct file
* @inode: pointer to inode struct
* @filp: pointer to struct file
*
* Revalidates the file length. This is basically a wrapper around
* nfs_revalidate_inode() that takes into account the fact that we may
......@@ -276,6 +276,12 @@ EXPORT_SYMBOL_GPL(nfs_file_fsync);
* then a modify/write/read cycle when writing to a page in the
* page cache.
*
* Some pNFS layout drivers can only read/write at a certain block
* granularity like all block devices and therefore we must perform
* read/modify/write whenever a page hasn't read yet and the data
* to be written there is not aligned to a block boundary and/or
* smaller than the block size.
*
* The modify/write/read cycle may occur if a page is read before
* being completely filled by the writer. In this situation, the
* page must be completely written to stable storage on the server
......@@ -291,26 +297,32 @@ EXPORT_SYMBOL_GPL(nfs_file_fsync);
* and that the new data won't completely replace the old data in
* that range of the file.
*/
static int nfs_want_read_modify_write(struct file *file, struct page *page,
loff_t pos, unsigned len)
static bool nfs_full_page_write(struct page *page, loff_t pos, unsigned int len)
{
unsigned int pglen = nfs_page_length(page);
unsigned int offset = pos & (PAGE_SIZE - 1);
unsigned int end = offset + len;
if (pnfs_ld_read_whole_page(file->f_mapping->host)) {
if (!PageUptodate(page))
return 1;
return 0;
}
return !pglen || (end >= pglen && !offset);
}
if ((file->f_mode & FMODE_READ) && /* open for read? */
!PageUptodate(page) && /* Uptodate? */
!PagePrivate(page) && /* i/o request already? */
pglen && /* valid bytes of file? */
(end < pglen || offset)) /* replace all valid bytes? */
return 1;
return 0;
static bool nfs_want_read_modify_write(struct file *file, struct page *page,
loff_t pos, unsigned int len)
{
/*
* Up-to-date pages, those with ongoing or full-page write
* don't need read/modify/write
*/
if (PageUptodate(page) || PagePrivate(page) ||
nfs_full_page_write(page, pos, len))
return false;
if (pnfs_ld_read_whole_page(file->f_mapping->host))
return true;
/* Open for reading too? */
if (file->f_mode & FMODE_READ)
return true;
return false;
}
/*
......
fs/nfs/flexfilelayout/flexfilelayout.c
View file @ 1fbf3e48
This diff is collapsed.
fs/nfs/flexfilelayout/flexfilelayout.h
View file @ 1fbf3e48
......@@ -132,16 +132,6 @@ FF_LAYOUT_LSEG(struct pnfs_layout_segment *lseg)
generic_hdr);
}
static inline struct nfs4_deviceid_node *
FF_LAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg, u32 idx)
{
if (idx >= FF_LAYOUT_LSEG(lseg)->mirror_array_cnt ||
FF_LAYOUT_LSEG(lseg)->mirror_array[idx] == NULL ||
FF_LAYOUT_LSEG(lseg)->mirror_array[idx]->mirror_ds == NULL)
return NULL;
return &FF_LAYOUT_LSEG(lseg)->mirror_array[idx]->mirror_ds->id_node;
}
static inline struct nfs4_ff_layout_ds *
FF_LAYOUT_MIRROR_DS(struct nfs4_deviceid_node *node)
{
......@@ -151,9 +141,25 @@ FF_LAYOUT_MIRROR_DS(struct nfs4_deviceid_node *node)
static inline struct nfs4_ff_layout_mirror *
FF_LAYOUT_COMP(struct pnfs_layout_segment *lseg, u32 idx)
{
if (idx >= FF_LAYOUT_LSEG(lseg)->mirror_array_cnt)
return NULL;
return FF_LAYOUT_LSEG(lseg)->mirror_array[idx];
struct nfs4_ff_layout_segment *fls = FF_LAYOUT_LSEG(lseg);
if (idx < fls->mirror_array_cnt)
return fls->mirror_array[idx];
return NULL;
}
static inline struct nfs4_deviceid_node *
FF_LAYOUT_DEVID_NODE(struct pnfs_layout_segment *lseg, u32 idx)
{
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, idx);
if (mirror != NULL) {
struct nfs4_ff_layout_ds *mirror_ds = mirror->mirror_ds;
if (!IS_ERR_OR_NULL(mirror_ds))
return &mirror_ds->id_node;
}
return NULL;
}
static inline u32
......@@ -174,28 +180,10 @@ ff_layout_no_read_on_rw(struct pnfs_layout_segment *lseg)
return FF_LAYOUT_LSEG(lseg)->flags & FF_FLAGS_NO_READ_IO;
}
static inline bool
ff_layout_test_devid_unavailable(struct nfs4_deviceid_node *node)
{
/*
* Flexfiles should never mark a DS unavailable, but if it does
* print a (ratelimited) warning as this can affect performance.
*/
if (nfs4_test_deviceid_unavailable(node)) {
u32 *p = (u32 *)node->deviceid.data;
pr_warn_ratelimited("NFS: flexfiles layout referencing an "
"unavailable device [%x%x%x%x]\n",
p[0], p[1], p[2], p[3]);
return true;
}
return false;
}
static inline int
nfs4_ff_layout_ds_version(struct pnfs_layout_segment *lseg, u32 ds_idx)
nfs4_ff_layout_ds_version(const struct nfs4_ff_layout_mirror *mirror)
{
return FF_LAYOUT_COMP(lseg, ds_idx)->mirror_ds->ds_versions[0].version;
return mirror->mirror_ds->ds_versions[0].version;
}
struct nfs4_ff_layout_ds *
......@@ -207,6 +195,7 @@ int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo,
struct nfs4_ff_layout_mirror *mirror, u64 offset,
u64 length, int status, enum nfs_opnum4 opnum,
gfp_t gfp_flags);
void ff_layout_send_layouterror(struct pnfs_layout_segment *lseg);
int ff_layout_encode_ds_ioerr(struct xdr_stream *xdr, const struct list_head *head);
void ff_layout_free_ds_ioerr(struct list_head *head);
unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
......@@ -214,23 +203,23 @@ unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
struct list_head *head,
unsigned int maxnum);
struct nfs_fh *
nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx);
int
nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
u32 mirror_idx,
nfs4_stateid *stateid);
nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror);
void
nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,
nfs4_stateid *stateid);
struct nfs4_pnfs_ds *
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg,
struct nfs4_ff_layout_mirror *mirror,
bool fail_return);
struct rpc_clnt *
nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg,
u32 ds_idx,
nfs4_ff_find_or_create_ds_client(struct nfs4_ff_layout_mirror *mirror,
struct nfs_client *ds_clp,
struct inode *inode);
const struct cred *ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg,
u32 ds_idx, const struct cred *mdscred);
const struct cred *ff_layout_get_ds_cred(struct nfs4_ff_layout_mirror *mirror,
const struct pnfs_layout_range *range,
const struct cred *mdscred);
bool ff_layout_avoid_mds_available_ds(struct pnfs_layout_segment *lseg);
bool ff_layout_avoid_read_on_rw(struct pnfs_layout_segment *lseg);
......
fs/nfs/flexfilelayout/flexfilelayoutdev.c
View file @ 1fbf3e48
......@@ -183,56 +183,6 @@ nfs4_ff_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev,
return NULL;
}
static void ff_layout_mark_devid_invalid(struct pnfs_layout_segment *lseg,
struct nfs4_deviceid_node *devid)
{
nfs4_delete_deviceid(devid->ld, devid->nfs_client, &devid->deviceid);
if (!ff_layout_has_available_ds(lseg))
pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode,
lseg);
}
static bool ff_layout_mirror_valid(struct pnfs_layout_segment *lseg,
struct nfs4_ff_layout_mirror *mirror,
bool create)
{
if (mirror == NULL || IS_ERR(mirror->mirror_ds))
goto outerr;
if (mirror->mirror_ds == NULL) {
if (create) {
struct nfs4_deviceid_node *node;
struct pnfs_layout_hdr *lh = lseg->pls_layout;
struct nfs4_ff_layout_ds *mirror_ds = ERR_PTR(-ENODEV);
node = nfs4_find_get_deviceid(NFS_SERVER(lh->plh_inode),
&mirror->devid, lh->plh_lc_cred,
GFP_KERNEL);
if (node)
mirror_ds = FF_LAYOUT_MIRROR_DS(node);
/* check for race with another call to this function */
if (cmpxchg(&mirror->mirror_ds, NULL, mirror_ds) &&
mirror_ds != ERR_PTR(-ENODEV))
nfs4_put_deviceid_node(node);
} else
goto outerr;
}
if (IS_ERR(mirror->mirror_ds))
goto outerr;
if (mirror->mirror_ds->ds == NULL) {
struct nfs4_deviceid_node *devid;
devid = &mirror->mirror_ds->id_node;
ff_layout_mark_devid_invalid(lseg, devid);
return false;
}
return true;
outerr:
pnfs_error_mark_layout_for_return(lseg->pls_layout->plh_inode, lseg);
return false;
}
static void extend_ds_error(struct nfs4_ff_layout_ds_err *err,
u64 offset, u64 length)
{
......@@ -326,7 +276,6 @@ int ff_layout_track_ds_error(struct nfs4_flexfile_layout *flo,
spin_lock(&flo->generic_hdr.plh_inode->i_lock);
ff_layout_add_ds_error_locked(flo, dserr);
spin_unlock(&flo->generic_hdr.plh_inode->i_lock);
return 0;
}
......@@ -353,46 +302,54 @@ ff_layout_get_mirror_cred(struct nfs4_ff_layout_mirror *mirror, u32 iomode)
}
struct nfs_fh *
nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx)
nfs4_ff_layout_select_ds_fh(struct nfs4_ff_layout_mirror *mirror)
{
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx);
struct nfs_fh *fh = NULL;
if (!ff_layout_mirror_valid(lseg, mirror, false)) {
pr_err_ratelimited("NFS: %s: No data server for mirror offset index %d\n",
__func__, mirror_idx);
goto out;
}
/* FIXME: For now assume there is only 1 version available for the DS */
fh = &mirror->fh_versions[0];
out:
return fh;
return &mirror->fh_versions[0];
}
int
nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
u32 mirror_idx,
nfs4_stateid *stateid)
void
nfs4_ff_layout_select_ds_stateid(const struct nfs4_ff_layout_mirror *mirror,
nfs4_stateid *stateid)
{
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx);
if (nfs4_ff_layout_ds_version(mirror) == 4)
nfs4_stateid_copy(stateid, &mirror->stateid);
}
if (!ff_layout_mirror_valid(lseg, mirror, false)) {
pr_err_ratelimited("NFS: %s: No data server for mirror offset index %d\n",
__func__, mirror_idx);
goto out;
static bool
ff_layout_init_mirror_ds(struct pnfs_layout_hdr *lo,
struct nfs4_ff_layout_mirror *mirror)
{
if (mirror == NULL)
goto outerr;
if (mirror->mirror_ds == NULL) {
struct nfs4_deviceid_node *node;
struct nfs4_ff_layout_ds *mirror_ds = ERR_PTR(-ENODEV);
node = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode),
&mirror->devid, lo->plh_lc_cred,
GFP_KERNEL);
if (node)
mirror_ds = FF_LAYOUT_MIRROR_DS(node);
/* check for race with another call to this function */
if (cmpxchg(&mirror->mirror_ds, NULL, mirror_ds) &&
mirror_ds != ERR_PTR(-ENODEV))
nfs4_put_deviceid_node(node);
}
nfs4_stateid_copy(stateid, &mirror->stateid);
return 1;
out:
return 0;
if (IS_ERR(mirror->mirror_ds))
goto outerr;
return true;
outerr:
return false;
}
/**
* nfs4_ff_layout_prepare_ds - prepare a DS connection for an RPC call
* @lseg: the layout segment we're operating on
* @ds_idx: index of the DS to use
* @mirror: layout mirror describing the DS to use
* @fail_return: return layout on connect failure?
*
* Try to prepare a DS connection to accept an RPC call. This involves
......@@ -407,26 +364,18 @@ nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
* Returns a pointer to a connected DS object on success or NULL on failure.
*/
struct nfs4_pnfs_ds *
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg,
struct nfs4_ff_layout_mirror *mirror,
bool fail_return)
{
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
struct nfs4_pnfs_ds *ds = NULL;
struct nfs4_deviceid_node *devid;
struct inode *ino = lseg->pls_layout->plh_inode;
struct nfs_server *s = NFS_SERVER(ino);
unsigned int max_payload;
int status;
if (!ff_layout_mirror_valid(lseg, mirror, true)) {
pr_err_ratelimited("NFS: %s: No data server for offset index %d\n",
__func__, ds_idx);
goto out;
}
devid = &mirror->mirror_ds->id_node;
if (ff_layout_test_devid_unavailable(devid))
goto out_fail;
if (!ff_layout_init_mirror_ds(lseg->pls_layout, mirror))
goto noconnect;
ds = mirror->mirror_ds->ds;
/* matching smp_wmb() in _nfs4_pnfs_v3/4_ds_connect */
......@@ -437,8 +386,8 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
/* FIXME: For now we assume the server sent only one version of NFS
* to use for the DS.
*/
status = nfs4_pnfs_ds_connect(s, ds, devid, dataserver_timeo,
dataserver_retrans,
status = nfs4_pnfs_ds_connect(s, ds, &mirror->mirror_ds->id_node,
dataserver_timeo, dataserver_retrans,
mirror->mirror_ds->ds_versions[0].version,
mirror->mirror_ds->ds_versions[0].minor_version);
......@@ -453,11 +402,12 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
mirror->mirror_ds->ds_versions[0].wsize = max_payload;
goto out;
}
out_fail:
noconnect:
ff_layout_track_ds_error(FF_LAYOUT_FROM_HDR(lseg->pls_layout),
mirror, lseg->pls_range.offset,
lseg->pls_range.length, NFS4ERR_NXIO,
OP_ILLEGAL, GFP_NOIO);
ff_layout_send_layouterror(lseg);
if (fail_return || !ff_layout_has_available_ds(lseg))
pnfs_error_mark_layout_for_return(ino, lseg);
ds = NULL;
......@@ -466,14 +416,14 @@ nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
}
const struct cred *
ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg, u32 ds_idx,
ff_layout_get_ds_cred(struct nfs4_ff_layout_mirror *mirror,
const struct pnfs_layout_range *range,
const struct cred *mdscred)
{
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
const struct cred *cred;
if (mirror && !mirror->mirror_ds->ds_versions[0].tightly_coupled) {
cred = ff_layout_get_mirror_cred(mirror, lseg->pls_range.iomode);
cred = ff_layout_get_mirror_cred(mirror, range->iomode);
if (!cred)
cred = get_cred(mdscred);
} else {
......@@ -483,15 +433,18 @@ ff_layout_get_ds_cred(struct pnfs_layout_segment *lseg, u32 ds_idx,
}
/**
* Find or create a DS rpc client with th MDS server rpc client auth flavor
* in the nfs_client cl_ds_clients list.
*/
* nfs4_ff_find_or_create_ds_client - Find or create a DS rpc client
* @mirror: pointer to the mirror
* @ds_clp: nfs_client for the DS
* @inode: pointer to inode
*
* Find or create a DS rpc client with th MDS server rpc client auth flavor
* in the nfs_client cl_ds_clients list.
*/
struct rpc_clnt *
nfs4_ff_find_or_create_ds_client(struct pnfs_layout_segment *lseg, u32 ds_idx,
nfs4_ff_find_or_create_ds_client(struct nfs4_ff_layout_mirror *mirror,
struct nfs_client *ds_clp, struct inode *inode)
{
struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, ds_idx);
switch (mirror->mirror_ds->ds_versions[0].version) {
case 3:
/* For NFSv3 DS, flavor is set when creating DS connections */
......@@ -608,7 +561,7 @@ static bool ff_read_layout_has_available_ds(struct pnfs_layout_segment *lseg)
if (IS_ERR(mirror->mirror_ds))
continue;
devid = &mirror->mirror_ds->id_node;
if (!ff_layout_test_devid_unavailable(devid))
if (!nfs4_test_deviceid_unavailable(devid))
return true;
}
}
......@@ -629,7 +582,7 @@ static bool ff_rw_layout_has_available_ds(struct pnfs_layout_segment *lseg)
if (!mirror->mirror_ds)
continue;
devid = &mirror->mirror_ds->id_node;
if (ff_layout_test_devid_unavailable(devid))
if (nfs4_test_deviceid_unavailable(devid))
return false;
}
......
fs/nfs/inode.c
View file @ 1fbf3e48
......@@ -143,6 +143,7 @@ EXPORT_SYMBOL_GPL(nfs_sync_inode);
/**
* nfs_sync_mapping - helper to flush all mmapped dirty data to disk
* @mapping: pointer to struct address_space
*/
int nfs_sync_mapping(struct address_space *mapping)
{
......@@ -1184,8 +1185,8 @@ int nfs_attribute_cache_expired(struct inode *inode)
/**
* nfs_revalidate_inode - Revalidate the inode attributes
* @server - pointer to nfs_server struct
* @inode - pointer to inode struct
* @server: pointer to nfs_server struct
* @inode: pointer to inode struct
*
* Updates inode attribute information by retrieving the data from the server.
*/
......@@ -1255,8 +1256,8 @@ int nfs_revalidate_mapping_rcu(struct inode *inode)
/**
* nfs_revalidate_mapping - Revalidate the pagecache
* @inode - pointer to host inode
* @mapping - pointer to mapping
* @inode: pointer to host inode
* @mapping: pointer to mapping
*/
int nfs_revalidate_mapping(struct inode *inode,
struct address_space *mapping)
......@@ -1371,8 +1372,8 @@ static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
/**
* nfs_check_inode_attributes - verify consistency of the inode attribute cache
* @inode - pointer to inode
* @fattr - updated attributes
* @inode: pointer to inode
* @fattr: updated attributes
*
* Verifies the attribute cache. If we have just changed the attributes,
* so that fattr carries weak cache consistency data, then it may
......@@ -1572,8 +1573,8 @@ EXPORT_SYMBOL_GPL(_nfs_display_fhandle);
/**
* nfs_inode_attrs_need_update - check if the inode attributes need updating
* @inode - pointer to inode
* @fattr - attributes
* @inode: pointer to inode
* @fattr: attributes
*
* Attempt to divine whether or not an RPC call reply carrying stale
* attributes got scheduled after another call carrying updated ones.
......@@ -1614,8 +1615,8 @@ static int nfs_refresh_inode_locked(struct inode *inode, struct nfs_fattr *fattr
/**
* nfs_refresh_inode - try to update the inode attribute cache
* @inode - pointer to inode
* @fattr - updated attributes
* @inode: pointer to inode
* @fattr: updated attributes
*
* Check that an RPC call that returned attributes has not overlapped with
* other recent updates of the inode metadata, then decide whether it is
......@@ -1649,8 +1650,8 @@ static int nfs_post_op_update_inode_locked(struct inode *inode,
/**
* nfs_post_op_update_inode - try to update the inode attribute cache
* @inode - pointer to inode
* @fattr - updated attributes
* @inode: pointer to inode
* @fattr: updated attributes
*
* After an operation that has changed the inode metadata, mark the
* attribute cache as being invalid, then try to update it.
......@@ -1679,8 +1680,8 @@ EXPORT_SYMBOL_GPL(nfs_post_op_update_inode);
/**
* nfs_post_op_update_inode_force_wcc_locked - update the inode attribute cache
* @inode - pointer to inode
* @fattr - updated attributes
* @inode: pointer to inode
* @fattr: updated attributes
*
* After an operation that has changed the inode metadata, mark the
* attribute cache as being invalid, then try to update it. Fake up
......@@ -1731,8 +1732,8 @@ int nfs_post_op_update_inode_force_wcc_locked(struct inode *inode, struct nfs_fa
/**
* nfs_post_op_update_inode_force_wcc - try to update the inode attribute cache
* @inode - pointer to inode
* @fattr - updated attributes
* @inode: pointer to inode
* @fattr: updated attributes
*
* After an operation that has changed the inode metadata, mark the
* attribute cache as being invalid, then try to update it. Fake up
......
fs/nfs/internal.h
View file @ 1fbf3e48
......@@ -69,7 +69,8 @@ struct nfs_clone_mount {
* Maximum number of pages that readdir can use for creating
* a vmapped array of pages.
*/
#define NFS_MAX_READDIR_PAGES 8
#define NFS_MAX_READDIR_PAGES 64
#define NFS_MAX_READDIR_RAPAGES 8
struct nfs_client_initdata {
unsigned long init_flags;
......@@ -755,6 +756,7 @@ static inline bool nfs_error_is_fatal(int err)
{
switch (err) {
case -ERESTARTSYS:
case -EINTR:
case -EACCES:
case -EDQUOT:
case -EFBIG:
......@@ -763,6 +765,7 @@ static inline bool nfs_error_is_fatal(int err)
case -EROFS:
case -ESTALE:
case -E2BIG:
case -ENOMEM:
return true;
default:
return false;
......
fs/nfs/io.c
View file @ 1fbf3e48
......@@ -25,7 +25,7 @@ static void nfs_block_o_direct(struct nfs_inode *nfsi, struct inode *inode)
/**
* nfs_start_io_read - declare the file is being used for buffered reads
* @inode - file inode
* @inode: file inode
*
* Declare that a buffered read operation is about to start, and ensure
* that we block all direct I/O.
......@@ -56,7 +56,7 @@ nfs_start_io_read(struct inode *inode)
/**
* nfs_end_io_read - declare that the buffered read operation is done
* @inode - file inode
* @inode: file inode
*
* Declare that a buffered read operation is done, and release the shared
* lock on inode->i_rwsem.
......@@ -69,7 +69,7 @@ nfs_end_io_read(struct inode *inode)
/**
* nfs_start_io_write - declare the file is being used for buffered writes
* @inode - file inode
* @inode: file inode
*
* Declare that a buffered read operation is about to start, and ensure
* that we block all direct I/O.
......@@ -83,7 +83,7 @@ nfs_start_io_write(struct inode *inode)
/**
* nfs_end_io_write - declare that the buffered write operation is done
* @inode - file inode
* @inode: file inode
*
* Declare that a buffered write operation is done, and release the
* lock on inode->i_rwsem.
......@@ -105,7 +105,7 @@ static void nfs_block_buffered(struct nfs_inode *nfsi, struct inode *inode)
/**
* nfs_end_io_direct - declare the file is being used for direct i/o
* @inode - file inode
* @inode: file inode
*
* Declare that a direct I/O operation is about to start, and ensure
* that we block all buffered I/O.
......@@ -136,7 +136,7 @@ nfs_start_io_direct(struct inode *inode)
/**
* nfs_end_io_direct - declare that the direct i/o operation is done
* @inode - file inode
* @inode: file inode
*
* Declare that a direct I/O operation is done, and release the shared
* lock on inode->i_rwsem.
......
fs/nfs/namespace.c
View file @ 1fbf3e48
......@@ -221,10 +221,10 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
/**
* nfs_do_submount - set up mountpoint when crossing a filesystem boundary
* @dentry - parent directory
* @fh - filehandle for new root dentry
* @fattr - attributes for new root inode
* @authflavor - security flavor to use when performing the mount
* @dentry: parent directory
* @fh: filehandle for new root dentry
* @fattr: attributes for new root inode
* @authflavor: security flavor to use when performing the mount
*
*/
struct vfsmount *nfs_do_submount(struct dentry *dentry, struct nfs_fh *fh,
......
fs/nfs/nfs2xdr.c
View file @ 1fbf3e48
......@@ -22,6 +22,7 @@
#include <linux/nfs.h>
#include <linux/nfs2.h>
#include <linux/nfs_fs.h>
#include "nfstrace.h"
#include "internal.h"
#define NFSDBG_FACILITY NFSDBG_XDR
......@@ -55,41 +56,15 @@
#define NFS_attrstat_sz (1+NFS_fattr_sz)
#define NFS_diropres_sz (1+NFS_fhandle_sz+NFS_fattr_sz)
#define NFS_readlinkres_sz (2)
#define NFS_readres_sz (1+NFS_fattr_sz+1)
#define NFS_readlinkres_sz (2+1)
#define NFS_readres_sz (1+NFS_fattr_sz+1+1)
#define NFS_writeres_sz (NFS_attrstat_sz)
#define NFS_stat_sz (1)
#define NFS_readdirres_sz (1)
#define NFS_readdirres_sz (1+1)
#define NFS_statfsres_sz (1+NFS_info_sz)
static int nfs_stat_to_errno(enum nfs_stat);
/*
* While encoding arguments, set up the reply buffer in advance to
* receive reply data directly into the page cache.
*/
static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages,
unsigned int base, unsigned int len,
unsigned int bufsize)
{
struct rpc_auth *auth = req->rq_cred->cr_auth;
unsigned int replen;
replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize;
xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len);
}
/*
* Handle decode buffer overflows out-of-line.
*/
static void print_overflow_msg(const char *func, const struct xdr_stream *xdr)
{
dprintk("NFS: %s prematurely hit the end of our receive buffer. "
"Remaining buffer length is %tu words.\n",
func, xdr->end - xdr->p);
}
/*
* Encode/decode NFSv2 basic data types
*
......@@ -110,8 +85,8 @@ static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_pgio_res *result)
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
count = be32_to_cpup(p);
recvd = xdr_read_pages(xdr, count);
if (unlikely(count > recvd))
......@@ -125,9 +100,6 @@ static int decode_nfsdata(struct xdr_stream *xdr, struct nfs_pgio_res *result)
"count %u > recvd %u\n", count, recvd);
count = recvd;
goto out;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
/*
......@@ -157,13 +129,16 @@ static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status)
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
if (unlikely(*p != cpu_to_be32(NFS_OK)))
goto out_status;
*status = 0;
return 0;
out_status:
*status = be32_to_cpup(p);
trace_nfs_xdr_status((int)*status);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
/*
......@@ -205,14 +180,11 @@ static int decode_fhandle(struct xdr_stream *xdr, struct nfs_fh *fh)
__be32 *p;
p = xdr_inline_decode(xdr, NFS2_FHSIZE);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
fh->size = NFS2_FHSIZE;
memcpy(fh->data, p, NFS2_FHSIZE);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
/*
......@@ -282,8 +254,8 @@ static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
__be32 *p;
p = xdr_inline_decode(xdr, NFS_fattr_sz << 2);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
fattr->valid |= NFS_ATTR_FATTR_V2;
......@@ -325,9 +297,6 @@ static int decode_fattr(struct xdr_stream *xdr, struct nfs_fattr *fattr)
out_gid:
dprintk("NFS: returned invalid gid\n");
return -EINVAL;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
/*
......@@ -416,23 +385,20 @@ static int decode_filename_inline(struct xdr_stream *xdr,
u32 count;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
count = be32_to_cpup(p);
if (count > NFS3_MAXNAMLEN)
goto out_nametoolong;
p = xdr_inline_decode(xdr, count);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
*name = (const char *)p;
*length = count;
return 0;
out_nametoolong:
dprintk("NFS: returned filename too long: %u\n", count);
return -ENAMETOOLONG;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
/*
......@@ -455,8 +421,8 @@ static int decode_path(struct xdr_stream *xdr)
__be32 *p;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
length = be32_to_cpup(p);
if (unlikely(length >= xdr->buf->page_len || length > NFS_MAXPATHLEN))
goto out_size;
......@@ -472,9 +438,6 @@ static int decode_path(struct xdr_stream *xdr)
dprintk("NFS: server cheating in pathname result: "
"length %u > received %u\n", length, recvd);
return -EIO;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
/*
......@@ -615,8 +578,8 @@ static void nfs2_xdr_enc_readlinkargs(struct rpc_rqst *req,
const struct nfs_readlinkargs *args = data;
encode_fhandle(xdr, args->fh);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->pglen, NFS_readlinkres_sz);
rpc_prepare_reply_pages(req, args->pages, args->pgbase,
args->pglen, NFS_readlinkres_sz);
}
/*
......@@ -651,8 +614,8 @@ static void nfs2_xdr_enc_readargs(struct rpc_rqst *req,
const struct nfs_pgio_args *args = data;
encode_readargs(xdr, args);
prepare_reply_buffer(req, args->pages, args->pgbase,
args->count, NFS_readres_sz);
rpc_prepare_reply_pages(req, args->pages, args->pgbase,
args->count, NFS_readres_sz);
req->rq_rcv_buf.flags |= XDRBUF_READ;
}
......@@ -809,8 +772,8 @@ static void nfs2_xdr_enc_readdirargs(struct rpc_rqst *req,
const struct nfs_readdirargs *args = data;
encode_readdirargs(xdr, args);
prepare_reply_buffer(req, args->pages, 0,
args->count, NFS_readdirres_sz);
rpc_prepare_reply_pages(req, args->pages, 0,
args->count, NFS_readdirres_sz);
}
/*
......@@ -951,12 +914,12 @@ int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
int error;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EAGAIN;
if (*p++ == xdr_zero) {
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EAGAIN;
if (*p++ == xdr_zero)
return -EAGAIN;
entry->eof = 1;
......@@ -964,8 +927,8 @@ int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
}
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EAGAIN;
entry->ino = be32_to_cpup(p);
error = decode_filename_inline(xdr, &entry->name, &entry->len);
......@@ -978,17 +941,13 @@ int nfs2_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry,
*/
entry->prev_cookie = entry->cookie;
p = xdr_inline_decode(xdr, 4);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EAGAIN;
entry->cookie = be32_to_cpup(p);
entry->d_type = DT_UNKNOWN;
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EAGAIN;
}
/*
......@@ -1052,17 +1011,14 @@ static int decode_info(struct xdr_stream *xdr, struct nfs2_fsstat *result)
__be32 *p;
p = xdr_inline_decode(xdr, NFS_info_sz << 2);
if (unlikely(p == NULL))
goto out_overflow;
if (unlikely(!p))
return -EIO;
result->tsize = be32_to_cpup(p++);
result->bsize = be32_to_cpup(p++);
result->blocks = be32_to_cpup(p++);
result->bfree = be32_to_cpup(p++);
result->bavail = be32_to_cpup(p);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int nfs2_xdr_dec_statfsres(struct rpc_rqst *req, struct xdr_stream *xdr,
......
fs/nfs/nfs3acl.c
View file @ 1fbf3e48
......@@ -222,8 +222,6 @@ static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
switch (status) {
case 0:
status = nfs_refresh_inode(inode, fattr);
set_cached_acl(inode, ACL_TYPE_ACCESS, acl);
set_cached_acl(inode, ACL_TYPE_DEFAULT, dfacl);
break;
case -EPFNOSUPPORT:
case -EPROTONOSUPPORT:
......
fs/nfs/nfs3xdr.c
View file @ 1fbf3e48
This diff is collapsed.
fs/nfs/nfs42.h
View file @ 1fbf3e48
......@@ -20,5 +20,8 @@ loff_t nfs42_proc_llseek(struct file *, loff_t, int);
int nfs42_proc_layoutstats_generic(struct nfs_server *,
struct nfs42_layoutstat_data *);
int nfs42_proc_clone(struct file *, struct file *, loff_t, loff_t, loff_t);
int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
const struct nfs42_layout_error *errors,
size_t n);
#endif /* __LINUX_FS_NFS_NFS4_2_H */
fs/nfs/nfs42proc.c
View file @ 1fbf3e48
......@@ -672,6 +672,170 @@ int nfs42_proc_layoutstats_generic(struct nfs_server *server,
return 0;
}
static struct nfs42_layouterror_data *
nfs42_alloc_layouterror_data(struct pnfs_layout_segment *lseg, gfp_t gfp_flags)
{
struct nfs42_layouterror_data *data;
struct inode *inode = lseg->pls_layout->plh_inode;
data = kzalloc(sizeof(*data), gfp_flags);
if (data) {
data->args.inode = data->inode = nfs_igrab_and_active(inode);
if (data->inode) {
data->lseg = pnfs_get_lseg(lseg);
if (data->lseg)
return data;
nfs_iput_and_deactive(data->inode);
}
kfree(data);
}
return NULL;
}
static void
nfs42_free_layouterror_data(struct nfs42_layouterror_data *data)
{
pnfs_put_lseg(data->lseg);
nfs_iput_and_deactive(data->inode);
kfree(data);
}
static void
nfs42_layouterror_prepare(struct rpc_task *task, void *calldata)
{
struct nfs42_layouterror_data *data = calldata;
struct inode *inode = data->inode;
struct nfs_server *server = NFS_SERVER(inode);
struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
unsigned i;
spin_lock(&inode->i_lock);
if (!pnfs_layout_is_valid(lo)) {
spin_unlock(&inode->i_lock);
rpc_exit(task, 0);
return;
}
for (i = 0; i < data->args.num_errors; i++)
nfs4_stateid_copy(&data->args.errors[i].stateid,
&lo->plh_stateid);
spin_unlock(&inode->i_lock);
nfs4_setup_sequence(server->nfs_client, &data->args.seq_args,
&data->res.seq_res, task);
}
static void
nfs42_layouterror_done(struct rpc_task *task, void *calldata)
{
struct nfs42_layouterror_data *data = calldata;
struct inode *inode = data->inode;
struct pnfs_layout_hdr *lo = data->lseg->pls_layout;
if (!nfs4_sequence_done(task, &data->res.seq_res))
return;
switch (task->tk_status) {
case 0:
break;
case -NFS4ERR_BADHANDLE:
case -ESTALE:
pnfs_destroy_layout(NFS_I(inode));
break;
case -NFS4ERR_EXPIRED:
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_DELEG_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_BAD_STATEID:
spin_lock(&inode->i_lock);
if (pnfs_layout_is_valid(lo) &&
nfs4_stateid_match(&data->args.errors[0].stateid,
&lo->plh_stateid)) {
LIST_HEAD(head);
/*
* Mark the bad layout state as invalid, then retry
* with the current stateid.
*/
pnfs_mark_layout_stateid_invalid(lo, &head);
spin_unlock(&inode->i_lock);
pnfs_free_lseg_list(&head);
nfs_commit_inode(inode, 0);
} else
spin_unlock(&inode->i_lock);
break;
case -NFS4ERR_OLD_STATEID:
spin_lock(&inode->i_lock);
if (pnfs_layout_is_valid(lo) &&
nfs4_stateid_match_other(&data->args.errors[0].stateid,
&lo->plh_stateid)) {
/* Do we need to delay before resending? */
if (!nfs4_stateid_is_newer(&lo->plh_stateid,
&data->args.errors[0].stateid))
rpc_delay(task, HZ);
rpc_restart_call_prepare(task);
}
spin_unlock(&inode->i_lock);
break;
case -ENOTSUPP:
case -EOPNOTSUPP:
NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR;
}
}
static void
nfs42_layouterror_release(void *calldata)
{
struct nfs42_layouterror_data *data = calldata;
nfs42_free_layouterror_data(data);
}
static const struct rpc_call_ops nfs42_layouterror_ops = {
.rpc_call_prepare = nfs42_layouterror_prepare,
.rpc_call_done = nfs42_layouterror_done,
.rpc_release = nfs42_layouterror_release,
};
int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg,
const struct nfs42_layout_error *errors, size_t n)
{
struct inode *inode = lseg->pls_layout->plh_inode;
struct nfs42_layouterror_data *data;
struct rpc_task *task;
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTERROR],
};
struct rpc_task_setup task_setup = {
.rpc_message = &msg,
.callback_ops = &nfs42_layouterror_ops,
.flags = RPC_TASK_ASYNC,
};
unsigned int i;
if (!nfs_server_capable(inode, NFS_CAP_LAYOUTERROR))
return -EOPNOTSUPP;
if (n > NFS42_LAYOUTERROR_MAX)
return -EINVAL;
data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS);
if (!data)
return -ENOMEM;
for (i = 0; i < n; i++) {
data->args.errors[i] = errors[i];
data->args.num_errors++;
data->res.num_errors++;
}
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
task_setup.callback_data = data;
task_setup.rpc_client = NFS_SERVER(inode)->client;
nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0, 0);
task = rpc_run_task(&task_setup);
if (IS_ERR(task))
return PTR_ERR(task);
rpc_put_task(task);
return 0;
}
EXPORT_SYMBOL_GPL(nfs42_proc_layouterror);
static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f,
struct file *dst_f, struct nfs_lock_context *src_lock,
struct nfs_lock_context *dst_lock, loff_t src_offset,
......
fs/nfs/nfs42xdr.c
View file @ 1fbf3e48
......@@ -51,6 +51,15 @@
1 /* opaque devaddr4 length */ + \
XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE))
#define decode_layoutstats_maxsz (op_decode_hdr_maxsz)
#define encode_device_error_maxsz (XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \
1 /* status */ + 1 /* opnum */)
#define encode_layouterror_maxsz (op_decode_hdr_maxsz + \
2 /* offset */ + \
2 /* length */ + \
encode_stateid_maxsz + \
1 /* Array size */ + \
encode_device_error_maxsz)
#define decode_layouterror_maxsz (op_decode_hdr_maxsz)
#define encode_clone_maxsz (encode_stateid_maxsz + \
encode_stateid_maxsz + \
2 /* src offset */ + \
......@@ -59,43 +68,53 @@
#define decode_clone_maxsz (op_decode_hdr_maxsz)
#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_allocate_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_allocate_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_allocate_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_copy_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_savefh_maxsz + \
encode_putfh_maxsz + \
encode_copy_maxsz + \
encode_commit_maxsz)
#define NFS4_dec_copy_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_savefh_maxsz + \
decode_putfh_maxsz + \
decode_copy_maxsz + \
decode_commit_maxsz)
#define NFS4_enc_offload_cancel_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_offload_cancel_maxsz)
#define NFS4_dec_offload_cancel_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_offload_cancel_maxsz)
#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_deallocate_maxsz + \
encode_getattr_maxsz)
#define NFS4_dec_deallocate_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_deallocate_maxsz + \
decode_getattr_maxsz)
#define NFS4_enc_seek_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
encode_seek_maxsz)
#define NFS4_dec_seek_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
decode_seek_maxsz)
#define NFS4_enc_layoutstats_sz (compound_encode_hdr_maxsz + \
......@@ -106,6 +125,16 @@
decode_sequence_maxsz + \
decode_putfh_maxsz + \
PNFS_LAYOUTSTATS_MAXDEV * decode_layoutstats_maxsz)
#define NFS4_enc_layouterror_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
NFS42_LAYOUTERROR_MAX * \
encode_layouterror_maxsz)
#define NFS4_dec_layouterror_sz (compound_decode_hdr_maxsz + \
decode_sequence_maxsz + \
decode_putfh_maxsz + \
NFS42_LAYOUTERROR_MAX * \
decode_layouterror_maxsz)
#define NFS4_enc_clone_sz (compound_encode_hdr_maxsz + \
encode_sequence_maxsz + \
encode_putfh_maxsz + \
......@@ -223,6 +252,34 @@ static void encode_clone(struct xdr_stream *xdr,
xdr_encode_hyper(p, args->count);
}
static void encode_device_error(struct xdr_stream *xdr,
const struct nfs42_device_error *error)
{
__be32 *p;
p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 2*4);
p = xdr_encode_opaque_fixed(p, error->dev_id.data,
NFS4_DEVICEID4_SIZE);
*p++ = cpu_to_be32(error->status);
*p = cpu_to_be32(error->opnum);
}
static void encode_layouterror(struct xdr_stream *xdr,
const struct nfs42_layout_error *args,
struct compound_hdr *hdr)
{
__be32 *p;
encode_op_hdr(xdr, OP_LAYOUTERROR, decode_layouterror_maxsz, hdr);
p = reserve_space(xdr, 8 + 8);
p = xdr_encode_hyper(p, args->offset);
p = xdr_encode_hyper(p, args->length);
encode_nfs4_stateid(xdr, &args->stateid);
p = reserve_space(xdr, 4);
*p = cpu_to_be32(1);
encode_device_error(xdr, &args->errors[0]);
}
/*
* Encode ALLOCATE request
*/
......@@ -381,6 +438,27 @@ static void nfs4_xdr_enc_clone(struct rpc_rqst *req,
encode_nops(&hdr);
}
/*
* Encode LAYOUTERROR request
*/
static void nfs4_xdr_enc_layouterror(struct rpc_rqst *req,
struct xdr_stream *xdr,
const void *data)
{
const struct nfs42_layouterror_args *args = data;
struct compound_hdr hdr = {
.minorversion = nfs4_xdr_minorversion(&args->seq_args),
};
int i;
encode_compound_hdr(xdr, req, &hdr);
encode_sequence(xdr, &args->seq_args, &hdr);
encode_putfh(xdr, NFS_FH(args->inode), &hdr);
for (i = 0; i < args->num_errors; i++)
encode_layouterror(xdr, &args->errors[i], &hdr);
encode_nops(&hdr);
}
static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
{
return decode_op_hdr(xdr, OP_ALLOCATE);
......@@ -394,7 +472,7 @@ static int decode_write_response(struct xdr_stream *xdr,
p = xdr_inline_decode(xdr, 4);
if (unlikely(!p))
goto out_overflow;
return -EIO;
count = be32_to_cpup(p);
if (count > 1)
return -EREMOTEIO;
......@@ -402,18 +480,14 @@ static int decode_write_response(struct xdr_stream *xdr,
status = decode_opaque_fixed(xdr, &res->stateid,
NFS4_STATEID_SIZE);
if (unlikely(status))
goto out_overflow;
return -EIO;
}
p = xdr_inline_decode(xdr, 8 + 4);
if (unlikely(!p))
goto out_overflow;
return -EIO;
p = xdr_decode_hyper(p, &res->count);
res->verifier.committed = be32_to_cpup(p);
return decode_verifier(xdr, &res->verifier.verifier);
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_copy_requirements(struct xdr_stream *xdr,
......@@ -422,14 +496,11 @@ static int decode_copy_requirements(struct xdr_stream *xdr,
p = xdr_inline_decode(xdr, 4 + 4);
if (unlikely(!p))
goto out_overflow;
return -EIO;
res->consecutive = be32_to_cpup(p++);
res->synchronous = be32_to_cpup(p++);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_copy(struct xdr_stream *xdr, struct nfs42_copy_res *res)
......@@ -474,15 +545,11 @@ static int decode_seek(struct xdr_stream *xdr, struct nfs42_seek_res *res)
p = xdr_inline_decode(xdr, 4 + 8);
if (unlikely(!p))
goto out_overflow;
return -EIO;
res->sr_eof = be32_to_cpup(p++);
p = xdr_decode_hyper(p, &res->sr_offset);
return 0;
out_overflow:
print_overflow_msg(__func__, xdr);
return -EIO;
}
static int decode_layoutstats(struct xdr_stream *xdr)
......@@ -495,6 +562,11 @@ static int decode_clone(struct xdr_stream *xdr)
return decode_op_hdr(xdr, OP_CLONE);
}
static int decode_layouterror(struct xdr_stream *xdr)
{
return decode_op_hdr(xdr, OP_LAYOUTERROR);
}
/*
* Decode ALLOCATE request
*/
......@@ -704,4 +776,30 @@ static int nfs4_xdr_dec_clone(struct rpc_rqst *rqstp,
return status;
}
/*
* Decode LAYOUTERROR request
*/
static int nfs4_xdr_dec_layouterror(struct rpc_rqst *rqstp,
struct xdr_stream *xdr,
void *data)
{
struct nfs42_layouterror_res *res = data;
struct compound_hdr hdr;
int status, i;
status = decode_compound_hdr(xdr, &hdr);
if (status)
goto out;
status = decode_sequence(xdr, &res->seq_res, rqstp);
if (status)
goto out;
status = decode_putfh(xdr);
for (i = 0; i < res->num_errors && status == 0; i++)
status = decode_layouterror(xdr);
out:
res->rpc_status = status;
return status;
}
#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */
fs/nfs/nfs4client.c
View file @ 1fbf3e48
......@@ -42,7 +42,7 @@ static int nfs_get_cb_ident_idr(struct nfs_client *clp, int minorversion)
}
#ifdef CONFIG_NFS_V4_1
/**
/*
* Per auth flavor data server rpc clients
*/
struct nfs4_ds_server {
......@@ -51,7 +51,9 @@ struct nfs4_ds_server {
};
/**
* Common lookup case for DS I/O
* nfs4_find_ds_client - Common lookup case for DS I/O
* @ds_clp: pointer to the DS's nfs_client
* @flavor: rpc auth flavour to match
*/
static struct nfs4_ds_server *
nfs4_find_ds_client(struct nfs_client *ds_clp, rpc_authflavor_t flavor)
......@@ -118,9 +120,13 @@ nfs4_free_ds_server(struct nfs4_ds_server *dss)
}
/**
* Find or create a DS rpc client with th MDS server rpc client auth flavor
* in the nfs_client cl_ds_clients list.
*/
* nfs4_find_or_create_ds_client - Find or create a DS rpc client
* @ds_clp: pointer to the DS's nfs_client
* @inode: pointer to the inode
*
* Find or create a DS rpc client with th MDS server rpc client auth flavor
* in the nfs_client cl_ds_clients list.
*/
struct rpc_clnt *
nfs4_find_or_create_ds_client(struct nfs_client *ds_clp, struct inode *inode)
{
......@@ -145,7 +151,6 @@ static void
nfs4_shutdown_ds_clients(struct nfs_client *clp)
{
struct nfs4_ds_server *dss;
LIST_HEAD(shutdown_list);
while (!list_empty(&clp->cl_ds_clients)) {
dss = list_entry(clp->cl_ds_clients.next,
......@@ -284,7 +289,7 @@ static int nfs4_init_callback(struct nfs_client *clp)
/**
* nfs40_init_client - nfs_client initialization tasks for NFSv4.0
* @clp - nfs_client to initialize
* @clp: nfs_client to initialize
*
* Returns zero on success, or a negative errno if some error occurred.
*/
......@@ -312,7 +317,7 @@ int nfs40_init_client(struct nfs_client *clp)
/**
* nfs41_init_client - nfs_client initialization tasks for NFSv4.1+
* @clp - nfs_client to initialize
* @clp: nfs_client to initialize
*
* Returns zero on success, or a negative errno if some error occurred.
*/
......@@ -360,9 +365,7 @@ static int nfs4_init_client_minor_version(struct nfs_client *clp)
* nfs4_init_client - Initialise an NFS4 client record
*
* @clp: nfs_client to initialise
* @timeparms: timeout parameters for underlying RPC transport
* @ip_addr: callback IP address in presentation format
* @authflavor: authentication flavor for underlying RPC transport
* @cl_init: pointer to nfs_client_initdata
*
* Returns pointer to an NFS client, or an ERR_PTR value.
*/
......@@ -649,13 +652,13 @@ nfs4_check_server_scope(struct nfs41_server_scope *s1,
/**
* nfs4_detect_session_trunking - Checks for session trunking.
*
* Called after a successful EXCHANGE_ID on a multi-addr connection.
* Upon success, add the transport.
*
* @clp: original mount nfs_client
* @res: result structure from an exchange_id using the original mount
* nfs_client with a new multi_addr transport
* @xprt: pointer to the transport to add.
*
* Called after a successful EXCHANGE_ID on a multi-addr connection.
* Upon success, add the transport.
*
* Returns zero on success, otherwise -EINVAL
*
......
fs/nfs/nfs4namespace.c
View file @ 1fbf3e48
......@@ -137,6 +137,7 @@ static size_t nfs_parse_server_name(char *string, size_t len,
/**
* nfs_find_best_sec - Find a security mechanism supported locally
* @clnt: pointer to rpc_clnt
* @server: NFS server struct
* @flavors: List of security tuples returned by SECINFO procedure
*
......@@ -288,8 +289,8 @@ static struct vfsmount *try_location(struct nfs_clone_mount *mountdata,
/**
* nfs_follow_referral - set up mountpoint when hitting a referral on moved error
* @dentry - parent directory
* @locations - array of NFSv4 server location information
* @dentry: parent directory
* @locations: array of NFSv4 server location information
*
*/
static struct vfsmount *nfs_follow_referral(struct dentry *dentry,
......
fs/nfs/nfs4proc.c
View file @ 1fbf3e48
......@@ -730,33 +730,41 @@ static void nfs41_sequence_free_slot(struct nfs4_sequence_res *res)
res->sr_slot = NULL;
}
static void nfs4_slot_sequence_record_sent(struct nfs4_slot *slot,
u32 seqnr)
{
if ((s32)(seqnr - slot->seq_nr_highest_sent) > 0)
slot->seq_nr_highest_sent = seqnr;
}
static void nfs4_slot_sequence_acked(struct nfs4_slot *slot,
u32 seqnr)
{
slot->seq_nr_highest_sent = seqnr;
slot->seq_nr_last_acked = seqnr;
}
static int nfs41_sequence_process(struct rpc_task *task,
struct nfs4_sequence_res *res)
{
struct nfs4_session *session;
struct nfs4_slot *slot = res->sr_slot;
struct nfs_client *clp;
bool interrupted = false;
int ret = 1;
if (slot == NULL)
goto out_noaction;
/* don't increment the sequence number if the task wasn't sent */
if (!RPC_WAS_SENT(task))
if (!RPC_WAS_SENT(task) || slot->seq_done)
goto out;
session = slot->table->session;
if (slot->interrupted) {
if (res->sr_status != -NFS4ERR_DELAY)
slot->interrupted = 0;
interrupted = true;
}
trace_nfs4_sequence_done(session, res);
/* Check the SEQUENCE operation status */
switch (res->sr_status) {
case 0:
/* Mark this sequence number as having been acked */
nfs4_slot_sequence_acked(slot, slot->seq_nr);
/* Update the slot's sequence and clientid lease timer */
slot->seq_done = 1;
clp = session->clp;
......@@ -771,9 +779,9 @@ static int nfs41_sequence_process(struct rpc_task *task,
* sr_status remains 1 if an RPC level error occurred.
* The server may or may not have processed the sequence
* operation..
* Mark the slot as having hosted an interrupted RPC call.
*/
slot->interrupted = 1;
nfs4_slot_sequence_record_sent(slot, slot->seq_nr);
slot->seq_done = 1;
goto out;
case -NFS4ERR_DELAY:
/* The server detected a resend of the RPC call and
......@@ -784,6 +792,7 @@ static int nfs41_sequence_process(struct rpc_task *task,
__func__,
slot->slot_nr,
slot->seq_nr);
nfs4_slot_sequence_acked(slot, slot->seq_nr);
goto out_retry;
case -NFS4ERR_RETRY_UNCACHED_REP:
case -NFS4ERR_SEQ_FALSE_RETRY:
......@@ -791,6 +800,7 @@ static int nfs41_sequence_process(struct rpc_task *task,
* The server thinks we tried to replay a request.
* Retry the call after bumping the sequence ID.
*/
nfs4_slot_sequence_acked(slot, slot->seq_nr);
goto retry_new_seq;
case -NFS4ERR_BADSLOT:
/*
......@@ -801,21 +811,28 @@ static int nfs41_sequence_process(struct rpc_task *task,
goto session_recover;
goto retry_nowait;
case -NFS4ERR_SEQ_MISORDERED:
nfs4_slot_sequence_record_sent(slot, slot->seq_nr);
/*
* Was the last operation on this sequence interrupted?
* If so, retry after bumping the sequence number.
*/
if (interrupted)
goto retry_new_seq;
/*
* Could this slot have been previously retired?
* If so, then the server may be expecting seq_nr = 1!
* Were one or more calls using this slot interrupted?
* If the server never received the request, then our
* transmitted slot sequence number may be too high.
*/
if (slot->seq_nr != 1) {
slot->seq_nr = 1;
if ((s32)(slot->seq_nr - slot->seq_nr_last_acked) > 1) {
slot->seq_nr--;
goto retry_nowait;
}
goto session_recover;
/*
* RFC5661:
* A retry might be sent while the original request is
* still in progress on the replier. The replier SHOULD
* deal with the issue by returning NFS4ERR_DELAY as the
* reply to SEQUENCE or CB_SEQUENCE operation, but
* implementations MAY return NFS4ERR_SEQ_MISORDERED.
*
* Restart the search after a delay.
*/
slot->seq_nr = slot->seq_nr_highest_sent;
goto out_retry;
default:
/* Just update the slot sequence no. */
slot->seq_done = 1;
......@@ -906,17 +923,6 @@ static const struct rpc_call_ops nfs41_call_sync_ops = {
.rpc_call_done = nfs41_call_sync_done,
};
static void
nfs4_sequence_process_interrupted(struct nfs_client *client,
struct nfs4_slot *slot, const struct cred *cred)
{
struct rpc_task *task;
task = _nfs41_proc_sequence(client, cred, slot, true);
if (!IS_ERR(task))
rpc_put_task_async(task);
}
#else /* !CONFIG_NFS_V4_1 */
static int nfs4_sequence_process(struct rpc_task *task, struct nfs4_sequence_res *res)
......@@ -937,16 +943,15 @@ int nfs4_sequence_done(struct rpc_task *task,
}
EXPORT_SYMBOL_GPL(nfs4_sequence_done);
static void
nfs4_sequence_process_interrupted(struct nfs_client *client,
struct nfs4_slot *slot, const struct cred *cred)
#endif /* !CONFIG_NFS_V4_1 */
static void nfs41_sequence_res_init(struct nfs4_sequence_res *res)
{
WARN_ON_ONCE(1);
slot->interrupted = 0;
res->sr_timestamp = jiffies;
res->sr_status_flags = 0;
res->sr_status = 1;
}
#endif /* !CONFIG_NFS_V4_1 */
static
void nfs4_sequence_attach_slot(struct nfs4_sequence_args *args,
struct nfs4_sequence_res *res,
......@@ -958,10 +963,6 @@ void nfs4_sequence_attach_slot(struct nfs4_sequence_args *args,
args->sa_slot = slot;
res->sr_slot = slot;
res->sr_timestamp = jiffies;
res->sr_status_flags = 0;
res->sr_status = 1;
}
int nfs4_setup_sequence(struct nfs_client *client,
......@@ -982,31 +983,25 @@ int nfs4_setup_sequence(struct nfs_client *client,
task->tk_timeout = 0;
}
for (;;) {
spin_lock(&tbl->slot_tbl_lock);
/* The state manager will wait until the slot table is empty */
if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
goto out_sleep;
slot = nfs4_alloc_slot(tbl);
if (IS_ERR(slot)) {
/* Try again in 1/4 second */
if (slot == ERR_PTR(-ENOMEM))
task->tk_timeout = HZ >> 2;
goto out_sleep;
}
spin_unlock(&tbl->slot_tbl_lock);
spin_lock(&tbl->slot_tbl_lock);
/* The state manager will wait until the slot table is empty */
if (nfs4_slot_tbl_draining(tbl) && !args->sa_privileged)
goto out_sleep;
if (likely(!slot->interrupted))
break;
nfs4_sequence_process_interrupted(client,
slot, task->tk_msg.rpc_cred);
slot = nfs4_alloc_slot(tbl);
if (IS_ERR(slot)) {
/* Try again in 1/4 second */
if (slot == ERR_PTR(-ENOMEM))
task->tk_timeout = HZ >> 2;
goto out_sleep;
}
spin_unlock(&tbl->slot_tbl_lock);
nfs4_sequence_attach_slot(args, res, slot);
trace_nfs4_setup_sequence(session, args);
out_start:
nfs41_sequence_res_init(res);
rpc_call_start(task);
return 0;
......@@ -1555,6 +1550,10 @@ static void nfs_clear_open_stateid(struct nfs4_state *state,
static void nfs_set_open_stateid_locked(struct nfs4_state *state,
const nfs4_stateid *stateid, nfs4_stateid *freeme)
__must_hold(&state->owner->so_lock)
__must_hold(&state->seqlock)
__must_hold(RCU)
{
DEFINE_WAIT(wait);
int status = 0;
......@@ -5963,7 +5962,7 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
/**
* nfs4_proc_setclientid_confirm - Confirm client ID
* @clp: state data structure
* @res: result of a previous SETCLIENTID
* @arg: result of a previous SETCLIENTID
* @cred: credential to use for this call
*
* Returns zero, a negative errno, or a negative NFS4ERR status code.
......@@ -7527,7 +7526,7 @@ int nfs4_proc_fsid_present(struct inode *inode, const struct cred *cred)
return status;
}
/**
/*
* If 'use_integrity' is true and the state managment nfs_client
* cl_rpcclient is using krb5i/p, use the integrity protected cl_rpcclient
* and the machine credential as per RFC3530bis and RFC5661 Security
......@@ -8937,10 +8936,12 @@ nfs4_proc_layoutget(struct nfs4_layoutget *lgp, long *timeout)
if (status != 0)
goto out;
/* if layoutp->len is 0, nfs4_layoutget_prepare called rpc_exit */
if (task->tk_status < 0 || lgp->res.layoutp->len == 0) {
if (task->tk_status < 0) {
status = nfs4_layoutget_handle_exception(task, lgp, &exception);
*timeout = exception.timeout;
} else if (lgp->res.layoutp->len == 0) {
status = -EAGAIN;
*timeout = nfs4_update_delay(&exception.timeout);
} else
lseg = pnfs_layout_process(lgp);
out:
......@@ -9219,7 +9220,7 @@ nfs4_proc_layoutcommit(struct nfs4_layoutcommit_data *data, bool sync)
return status;
}
/**
/*
* Use the state managment nfs_client cl_rpcclient, which uses krb5i (if
* possible) as per RFC3530bis and RFC5661 Security Considerations sections
*/
......@@ -9484,7 +9485,7 @@ static const struct rpc_call_ops nfs41_free_stateid_ops = {
* @server: server / transport on which to perform the operation
* @stateid: state ID to release
* @cred: credential
* @is_recovery: set to true if this call needs to be privileged
* @privileged: set to true if this call needs to be privileged
*
* Note: this function is always asynchronous.
*/
......@@ -9691,7 +9692,8 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
| NFS_CAP_DEALLOCATE
| NFS_CAP_SEEK
| NFS_CAP_LAYOUTSTATS
| NFS_CAP_CLONE,
| NFS_CAP_CLONE
| NFS_CAP_LAYOUTERROR,
.init_client = nfs41_init_client,
.shutdown_client = nfs41_shutdown_client,
.match_stateid = nfs41_match_stateid,
......
fs/nfs/nfs4session.c
View file @ 1fbf3e48
......@@ -55,7 +55,7 @@ static void nfs4_shrink_slot_table(struct nfs4_slot_table *tbl, u32 newsize)
/**
* nfs4_slot_tbl_drain_complete - wake waiters when drain is complete
* @tbl - controlling slot table
* @tbl: controlling slot table
*
*/
void nfs4_slot_tbl_drain_complete(struct nfs4_slot_table *tbl)
......@@ -110,6 +110,8 @@ static struct nfs4_slot *nfs4_new_slot(struct nfs4_slot_table *tbl,
slot->table = tbl;
slot->slot_nr = slotid;
slot->seq_nr = seq_init;
slot->seq_nr_highest_sent = seq_init;
slot->seq_nr_last_acked = seq_init - 1;
}
return slot;
}
......@@ -276,7 +278,8 @@ static void nfs4_reset_slot_table(struct nfs4_slot_table *tbl,
p = &tbl->slots;
while (*p) {
(*p)->seq_nr = ivalue;
(*p)->interrupted = 0;
(*p)->seq_nr_highest_sent = ivalue;
(*p)->seq_nr_last_acked = ivalue - 1;
p = &(*p)->next;
}
tbl->highest_used_slotid = NFS4_NO_SLOT;
......
fs/nfs/nfs4session.h
View file @ 1fbf3e48
......@@ -10,7 +10,7 @@
/* maximum number of slots to use */
#define NFS4_DEF_SLOT_TABLE_SIZE (64U)
#define NFS4_DEF_CB_SLOT_TABLE_SIZE (1U)
#define NFS4_DEF_CB_SLOT_TABLE_SIZE (16U)
#define NFS4_MAX_SLOT_TABLE (1024U)
#define NFS4_NO_SLOT ((u32)-1)
......@@ -23,8 +23,9 @@ struct nfs4_slot {
unsigned long generation;
u32 slot_nr;
u32 seq_nr;
unsigned int interrupted : 1,
privileged : 1,
u32 seq_nr_last_acked;
u32 seq_nr_highest_sent;
unsigned int privileged : 1,
seq_done : 1;
};
......
fs/nfs/nfs4state.c
View file @ 1fbf3e48
......@@ -563,6 +563,7 @@ static void nfs4_gc_state_owners(struct nfs_server *server)
* nfs4_get_state_owner - Look up a state owner given a credential
* @server: nfs_server to search
* @cred: RPC credential to match
* @gfp_flags: allocation mode
*
* Returns a pointer to an instantiated nfs4_state_owner struct, or NULL.
*/
......
fs/nfs/nfs4trace.h
View file @ 1fbf3e48
......@@ -524,6 +524,31 @@ TRACE_EVENT(nfs4_setup_sequence,
)
);
TRACE_EVENT(nfs4_xdr_status,
TP_PROTO(
u32 op,
int error
),
TP_ARGS(op, error),
TP_STRUCT__entry(
__field(u32, op)
__field(int, error)
),
TP_fast_assign(
__entry->op = op;
__entry->error = -error;
),
TP_printk(
"operation %d: nfs status %d (%s)",
__entry->op,
__entry->error, show_nfsv4_errors(__entry->error)
)
);
DECLARE_EVENT_CLASS(nfs4_open_event,
TP_PROTO(
const struct nfs_open_context *ctx,
......
fs/nfs/nfs4xdr.c
View file @ 1fbf3e48
This diff is collapsed.
fs/nfs/nfstrace.c
View file @ 1fbf3e48
......@@ -11,3 +11,4 @@
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_enter);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_exit);
EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_xdr_status);
fs/nfs/nfstrace.h
View file @ 1fbf3e48
......@@ -969,6 +969,91 @@ TRACE_EVENT(nfs_commit_done,
)
);
TRACE_DEFINE_ENUM(NFS_OK);
TRACE_DEFINE_ENUM(NFSERR_PERM);
TRACE_DEFINE_ENUM(NFSERR_NOENT);
TRACE_DEFINE_ENUM(NFSERR_IO);
TRACE_DEFINE_ENUM(NFSERR_NXIO);
TRACE_DEFINE_ENUM(NFSERR_ACCES);
TRACE_DEFINE_ENUM(NFSERR_EXIST);
TRACE_DEFINE_ENUM(NFSERR_XDEV);
TRACE_DEFINE_ENUM(NFSERR_NODEV);
TRACE_DEFINE_ENUM(NFSERR_NOTDIR);
TRACE_DEFINE_ENUM(NFSERR_ISDIR);
TRACE_DEFINE_ENUM(NFSERR_INVAL);
TRACE_DEFINE_ENUM(NFSERR_FBIG);
TRACE_DEFINE_ENUM(NFSERR_NOSPC);
TRACE_DEFINE_ENUM(NFSERR_ROFS);
TRACE_DEFINE_ENUM(NFSERR_MLINK);
TRACE_DEFINE_ENUM(NFSERR_NAMETOOLONG);
TRACE_DEFINE_ENUM(NFSERR_NOTEMPTY);
TRACE_DEFINE_ENUM(NFSERR_DQUOT);
TRACE_DEFINE_ENUM(NFSERR_STALE);
TRACE_DEFINE_ENUM(NFSERR_REMOTE);
TRACE_DEFINE_ENUM(NFSERR_WFLUSH);
TRACE_DEFINE_ENUM(NFSERR_BADHANDLE);
TRACE_DEFINE_ENUM(NFSERR_NOT_SYNC);
TRACE_DEFINE_ENUM(NFSERR_BAD_COOKIE);
TRACE_DEFINE_ENUM(NFSERR_NOTSUPP);
TRACE_DEFINE_ENUM(NFSERR_TOOSMALL);
TRACE_DEFINE_ENUM(NFSERR_SERVERFAULT);
TRACE_DEFINE_ENUM(NFSERR_BADTYPE);
TRACE_DEFINE_ENUM(NFSERR_JUKEBOX);
#define nfs_show_status(x) \
__print_symbolic(x, \
{ NFS_OK, "OK" }, \
{ NFSERR_PERM, "PERM" }, \
{ NFSERR_NOENT, "NOENT" }, \
{ NFSERR_IO, "IO" }, \
{ NFSERR_NXIO, "NXIO" }, \
{ NFSERR_ACCES, "ACCES" }, \
{ NFSERR_EXIST, "EXIST" }, \
{ NFSERR_XDEV, "XDEV" }, \
{ NFSERR_NODEV, "NODEV" }, \
{ NFSERR_NOTDIR, "NOTDIR" }, \
{ NFSERR_ISDIR, "ISDIR" }, \
{ NFSERR_INVAL, "INVAL" }, \
{ NFSERR_FBIG, "FBIG" }, \
{ NFSERR_NOSPC, "NOSPC" }, \
{ NFSERR_ROFS, "ROFS" }, \
{ NFSERR_MLINK, "MLINK" }, \
{ NFSERR_NAMETOOLONG, "NAMETOOLONG" }, \
{ NFSERR_NOTEMPTY, "NOTEMPTY" }, \
{ NFSERR_DQUOT, "DQUOT" }, \
{ NFSERR_STALE, "STALE" }, \
{ NFSERR_REMOTE, "REMOTE" }, \
{ NFSERR_WFLUSH, "WFLUSH" }, \
{ NFSERR_BADHANDLE, "BADHANDLE" }, \
{ NFSERR_NOT_SYNC, "NOTSYNC" }, \
{ NFSERR_BAD_COOKIE, "BADCOOKIE" }, \
{ NFSERR_NOTSUPP, "NOTSUPP" }, \
{ NFSERR_TOOSMALL, "TOOSMALL" }, \
{ NFSERR_SERVERFAULT, "REMOTEIO" }, \
{ NFSERR_BADTYPE, "BADTYPE" }, \
{ NFSERR_JUKEBOX, "JUKEBOX" })
TRACE_EVENT(nfs_xdr_status,
TP_PROTO(
int error
),
TP_ARGS(error),
TP_STRUCT__entry(
__field(int, error)
),
TP_fast_assign(
__entry->error = error;
),
TP_printk(
"error=%d (%s)",
__entry->error, nfs_show_status(__entry->error)
)
);
#endif /* _TRACE_NFS_H */
#undef TRACE_INCLUDE_PATH
......
fs/nfs/pagelist.c
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fs/nfs/pnfs.c
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fs/nfs/pnfs.h
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......@@ -104,6 +104,7 @@ enum {
NFS_LAYOUT_RETURN_REQUESTED, /* Return this layout ASAP */
NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */
NFS_LAYOUT_FIRST_LAYOUTGET, /* Serialize first layoutget */
NFS_LAYOUT_INODE_FREEING, /* The inode is being freed */
};
enum layoutdriver_policy_flags {
......@@ -349,6 +350,7 @@ void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nf
void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *,
const struct nfs4_deviceid *);
bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *);
void nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node);
void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node);
bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node);
void nfs4_deviceid_purge_client(const struct nfs_client *);
......
fs/nfs/pnfs_dev.c
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......@@ -283,11 +283,23 @@ nfs4_put_deviceid_node(struct nfs4_deviceid_node *d)
}
EXPORT_SYMBOL_GPL(nfs4_put_deviceid_node);
void
nfs4_mark_deviceid_available(struct nfs4_deviceid_node *node)
{
if (test_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags)) {
clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
smp_mb__after_atomic();
}
}
EXPORT_SYMBOL_GPL(nfs4_mark_deviceid_available);
void
nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node)
{
node->timestamp_unavailable = jiffies;
smp_mb__before_atomic();
set_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
smp_mb__after_atomic();
}
EXPORT_SYMBOL_GPL(nfs4_mark_deviceid_unavailable);
......@@ -302,6 +314,7 @@ nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node)
if (time_in_range(node->timestamp_unavailable, start, end))
return true;
clear_bit(NFS_DEVICEID_UNAVAILABLE, &node->flags);
smp_mb__after_atomic();
}
return false;
}
......
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