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NFS client updates for Linux 3.15

Browse source 
Highlights include:
 
 - Stable fix for a use after free issue in the NFSv4.1 open code
 - Fix the SUNRPC bi-directional RPC code to account for TCP segmentation
 - Optimise usage of readdirplus when confronted with 'ls -l' situations
 - Soft mount bugfixes
 - NFS over RDMA bugfixes
 - NFSv4 close locking fixes
 - Various NFSv4.x client state management optimisations
 - Rename/unlink code cleanups
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Merge tag 'nfs-for-3.15-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

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

   - Stable fix for a use after free issue in the NFSv4.1 open code
   - Fix the SUNRPC bi-directional RPC code to account for TCP segmentation
   - Optimise usage of readdirplus when confronted with 'ls -l' situations
   - Soft mount bugfixes
   - NFS over RDMA bugfixes
   - NFSv4 close locking fixes
   - Various NFSv4.x client state management optimisations
   - Rename/unlink code cleanups"

* tag 'nfs-for-3.15-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (28 commits)
  nfs: pass string length to pr_notice message about readdir loops
  NFSv4: Fix a use-after-free problem in open()
  SUNRPC: rpc_restart_call/rpc_restart_call_prepare should clear task->tk_status
  SUNRPC: Don't let rpc_delay() clobber non-timeout errors
  SUNRPC: Ensure call_connect_status() deals correctly with SOFTCONN tasks
  SUNRPC: Ensure call_status() deals correctly with SOFTCONN tasks
  NFSv4: Ensure we respect soft mount timeouts during trunking discovery
  NFSv4: Schedule recovery if nfs40_walk_client_list() is interrupted
  NFS: advertise only supported callback netids
  SUNRPC: remove KERN_INFO from dprintk() call sites
  SUNRPC: Fix large reads on NFS/RDMA
  NFS: Clean up: revert increase in READDIR RPC buffer max size
  SUNRPC: Ensure that call_bind times out correctly
  SUNRPC: Ensure that call_connect times out correctly
  nfs: emit a fsnotify_nameremove call in sillyrename codepath
  nfs: remove synchronous rename code
  nfs: convert nfs_rename to use async_rename infrastructure
  nfs: make nfs_async_rename non-static
  nfs: abstract out code needed to complete a sillyrename
  NFSv4: Clear the open state flags if the new stateid does not match
  ...
This commit is contained in:
Linus Torvalds 2014-04-06 10:09:38 -07:00
commit 2b3a8fd735
22 changed files with 368 additions and 261 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

19
fs/nfs/callback_proc.c
View file

@ -112,7 +112,8 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy,
* TODO: keep track of all layouts (and delegations) in a hash table
* hashed by filehandle.
*/
static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp, struct nfs_fh *fh)
static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp,
struct nfs_fh *fh, nfs4_stateid *stateid)
{
struct nfs_server *server;
struct inode *ino;
@ -120,17 +121,19 @@ static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp,
list_for_each_entry_rcu(server, &clp->cl_superblocks, client_link) {
list_for_each_entry(lo, &server->layouts, plh_layouts) {
if (!nfs4_stateid_match_other(&lo->plh_stateid, stateid))
continue;
if (nfs_compare_fh(fh, &NFS_I(lo->plh_inode)->fh))
continue;
ino = igrab(lo->plh_inode);
if (!ino)
continue;
break;
spin_lock(&ino->i_lock);
/* Is this layout in the process of being freed? */
if (NFS_I(ino)->layout != lo) {
spin_unlock(&ino->i_lock);
iput(ino);
continue;
break;
}
pnfs_get_layout_hdr(lo);
spin_unlock(&ino->i_lock);
@ -141,13 +144,14 @@ static struct pnfs_layout_hdr * get_layout_by_fh_locked(struct nfs_client *clp,
return NULL;
}
static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp, struct nfs_fh *fh)
static struct pnfs_layout_hdr * get_layout_by_fh(struct nfs_client *clp,
struct nfs_fh *fh, nfs4_stateid *stateid)
{
struct pnfs_layout_hdr *lo;
spin_lock(&clp->cl_lock);
rcu_read_lock();
lo = get_layout_by_fh_locked(clp, fh);
lo = get_layout_by_fh_locked(clp, fh, stateid);
rcu_read_unlock();
spin_unlock(&clp->cl_lock);
@ -162,9 +166,9 @@ static u32 initiate_file_draining(struct nfs_client *clp,
u32 rv = NFS4ERR_NOMATCHING_LAYOUT;
LIST_HEAD(free_me_list);
lo = get_layout_by_fh(clp, &args->cbl_fh);
lo = get_layout_by_fh(clp, &args->cbl_fh, &args->cbl_stateid);
if (!lo)
return NFS4ERR_NOMATCHING_LAYOUT;
goto out;
ino = lo->plh_inode;
spin_lock(&ino->i_lock);
@ -179,6 +183,7 @@ static u32 initiate_file_draining(struct nfs_client *clp,
pnfs_free_lseg_list(&free_me_list);
pnfs_put_layout_hdr(lo);
iput(ino);
out:
return rv;
}

62
fs/nfs/dir.c
View file

@ -69,21 +69,28 @@ const struct address_space_operations nfs_dir_aops = {
static struct nfs_open_dir_context *alloc_nfs_open_dir_context(struct inode *dir, struct rpc_cred *cred)
{
struct nfs_inode *nfsi = NFS_I(dir);
struct nfs_open_dir_context *ctx;
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx != NULL) {
ctx->duped = 0;
ctx->attr_gencount = NFS_I(dir)->attr_gencount;
ctx->attr_gencount = nfsi->attr_gencount;
ctx->dir_cookie = 0;
ctx->dup_cookie = 0;
ctx->cred = get_rpccred(cred);
spin_lock(&dir->i_lock);
list_add(&ctx->list, &nfsi->open_files);
spin_unlock(&dir->i_lock);
return ctx;
}
return ERR_PTR(-ENOMEM);
}
static void put_nfs_open_dir_context(struct nfs_open_dir_context *ctx)
static void put_nfs_open_dir_context(struct inode *dir, struct nfs_open_dir_context *ctx)
{
spin_lock(&dir->i_lock);
list_del(&ctx->list);
spin_unlock(&dir->i_lock);
put_rpccred(ctx->cred);
kfree(ctx);
}
@ -126,7 +133,7 @@ nfs_opendir(struct inode *inode, struct file *filp)
static int
nfs_closedir(struct inode *inode, struct file *filp)
{
put_nfs_open_dir_context(filp->private_data);
put_nfs_open_dir_context(filp->f_path.dentry->d_inode, filp->private_data);
return 0;
}
@ -306,10 +313,9 @@ int nfs_readdir_search_for_cookie(struct nfs_cache_array *array, nfs_readdir_des
if (printk_ratelimit()) {
pr_notice("NFS: directory %pD2 contains a readdir loop."
"Please contact your server vendor. "
"The file: %s has duplicate cookie %llu\n",
desc->file,
array->array[i].string.name,
*desc->dir_cookie);
"The file: %.*s has duplicate cookie %llu\n",
desc->file, array->array[i].string.len,
array->array[i].string.name, *desc->dir_cookie);
}
status = -ELOOP;
goto out;
@ -437,6 +443,22 @@ void nfs_advise_use_readdirplus(struct inode *dir)
set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(dir)->flags);
}
/*
* This function is mainly for use by nfs_getattr().
*
* If this is an 'ls -l', we want to force use of readdirplus.
* Do this by checking if there is an active file descriptor
* and calling nfs_advise_use_readdirplus, then forcing a
* cache flush.
*/
void nfs_force_use_readdirplus(struct inode *dir)
{
if (!list_empty(&NFS_I(dir)->open_files)) {
nfs_advise_use_readdirplus(dir);
nfs_zap_mapping(dir, dir->i_mapping);
}
}
static
void nfs_prime_dcache(struct dentry *parent, struct nfs_entry *entry)
{
@ -815,6 +837,17 @@ int uncached_readdir(nfs_readdir_descriptor_t *desc)
goto out;
}
static bool nfs_dir_mapping_need_revalidate(struct inode *dir)
{
struct nfs_inode *nfsi = NFS_I(dir);
if (nfs_attribute_cache_expired(dir))
return true;
if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
return true;
return false;
}
/* The file offset position represents the dirent entry number. A
last cookie cache takes care of the common case of reading the
whole directory.
@ -847,7 +880,7 @@ static int nfs_readdir(struct file *file, struct dir_context *ctx)
desc->plus = nfs_use_readdirplus(inode, ctx) ? 1 : 0;
nfs_block_sillyrename(dentry);
if (ctx->pos == 0 || nfs_attribute_cache_expired(inode))
if (ctx->pos == 0 || nfs_dir_mapping_need_revalidate(inode))
res = nfs_revalidate_mapping(inode, file->f_mapping);
if (res < 0)
goto out;
@ -1911,6 +1944,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *old_inode = old_dentry->d_inode;
struct inode *new_inode = new_dentry->d_inode;
struct dentry *dentry = NULL, *rehash = NULL;
struct rpc_task *task;
int error = -EBUSY;
dfprintk(VFS, "NFS: rename(%pd2 -> %pd2, ct=%d)\n",
@ -1958,8 +1992,16 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (new_inode != NULL)
NFS_PROTO(new_inode)->return_delegation(new_inode);
error = NFS_PROTO(old_dir)->rename(old_dir, &old_dentry->d_name,
new_dir, &new_dentry->d_name);
task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, NULL);
if (IS_ERR(task)) {
error = PTR_ERR(task);
goto out;
}
error = rpc_wait_for_completion_task(task);
if (error == 0)
error = task->tk_status;
rpc_put_task(task);
nfs_mark_for_revalidate(old_inode);
out:
if (rehash)

34
fs/nfs/inode.c
View file

@ -588,6 +588,25 @@ void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr)
}
EXPORT_SYMBOL_GPL(nfs_setattr_update_inode);
static void nfs_request_parent_use_readdirplus(struct dentry *dentry)
{
struct dentry *parent;
parent = dget_parent(dentry);
nfs_force_use_readdirplus(parent->d_inode);
dput(parent);
}
static bool nfs_need_revalidate_inode(struct inode *inode)
{
if (NFS_I(inode)->cache_validity &
(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL))
return true;
if (nfs_attribute_cache_expired(inode))
return true;
return false;
}
int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
{
struct inode *inode = dentry->d_inode;
@ -616,10 +635,13 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
((mnt->mnt_flags & MNT_NODIRATIME) && S_ISDIR(inode->i_mode)))
need_atime = 0;
if (need_atime)
err = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
else
err = nfs_revalidate_inode(NFS_SERVER(inode), inode);
if (need_atime || nfs_need_revalidate_inode(inode)) {
struct nfs_server *server = NFS_SERVER(inode);
if (server->caps & NFS_CAP_READDIRPLUS)
nfs_request_parent_use_readdirplus(dentry);
err = __nfs_revalidate_inode(server, inode);
}
if (!err) {
generic_fillattr(inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
@ -961,9 +983,7 @@ int nfs_attribute_cache_expired(struct inode *inode)
*/
int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
{
if (!(NFS_I(inode)->cache_validity &
(NFS_INO_INVALID_ATTR|NFS_INO_INVALID_LABEL))
&& !nfs_attribute_cache_expired(inode))
if (!nfs_need_revalidate_inode(inode))
return NFS_STALE(inode) ? -ESTALE : 0;
return __nfs_revalidate_inode(server, inode);
}

8
fs/nfs/internal.h
View file

@ -301,6 +301,7 @@ extern struct nfs_client *nfs_init_client(struct nfs_client *clp,
const char *ip_addr);
/* dir.c */
extern void nfs_force_use_readdirplus(struct inode *dir);
extern unsigned long nfs_access_cache_count(struct shrinker *shrink,
struct shrink_control *sc);
extern unsigned long nfs_access_cache_scan(struct shrinker *shrink,
@ -474,6 +475,13 @@ extern int nfs_migrate_page(struct address_space *,
#define nfs_migrate_page NULL
#endif
/* unlink.c */
extern struct rpc_task *
nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
struct dentry *old_dentry, struct dentry *new_dentry,
void (*complete)(struct rpc_task *, struct nfs_renamedata *));
extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry);
/* direct.c */
void nfs_init_cinfo_from_dreq(struct nfs_commit_info *cinfo,
struct nfs_direct_req *dreq);

36
fs/nfs/nfs3proc.c
View file

@ -478,41 +478,6 @@ nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
return 1;
}
static int
nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.old_name = old_name,
.new_dir = NFS_FH(new_dir),
.new_name = new_name,
};
struct nfs_renameres res;
struct rpc_message msg = {
.rpc_proc = &nfs3_procedures[NFS3PROC_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
res.old_fattr = nfs_alloc_fattr();
res.new_fattr = nfs_alloc_fattr();
if (res.old_fattr == NULL || res.new_fattr == NULL)
goto out;
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_post_op_update_inode(old_dir, res.old_fattr);
nfs_post_op_update_inode(new_dir, res.new_fattr);
out:
nfs_free_fattr(res.old_fattr);
nfs_free_fattr(res.new_fattr);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
@ -968,7 +933,6 @@ const struct nfs_rpc_ops nfs_v3_clientops = {
.unlink_setup = nfs3_proc_unlink_setup,
.unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
.unlink_done = nfs3_proc_unlink_done,
.rename = nfs3_proc_rename,
.rename_setup = nfs3_proc_rename_setup,
.rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
.rename_done = nfs3_proc_rename_done,

11
fs/nfs/nfs4_fs.h
View file

@ -427,6 +427,7 @@ extern void nfs4_close_sync(struct nfs4_state *, fmode_t);
extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
extern void nfs_inode_find_state_and_recover(struct inode *inode,
const nfs4_stateid *stateid);
extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *, struct nfs4_state *);
extern void nfs4_schedule_lease_recovery(struct nfs_client *);
extern int nfs4_wait_clnt_recover(struct nfs_client *clp);
extern int nfs4_client_recover_expired_lease(struct nfs_client *clp);
@ -500,6 +501,16 @@ static inline bool nfs4_stateid_match(const nfs4_stateid *dst, const nfs4_statei
return memcmp(dst, src, sizeof(*dst)) == 0;
}
static inline bool nfs4_stateid_match_other(const nfs4_stateid *dst, const nfs4_stateid *src)
{
return memcmp(dst->other, src->other, NFS4_STATEID_OTHER_SIZE) == 0;
}
static inline bool nfs4_stateid_is_newer(const nfs4_stateid *s1, const nfs4_stateid *s2)
{
return (s32)(be32_to_cpu(s1->seqid) - be32_to_cpu(s2->seqid)) > 0;
}
static inline bool nfs4_valid_open_stateid(const struct nfs4_state *state)
{
return test_bit(NFS_STATE_RECOVERY_FAILED, &state->flags) == 0;

7
fs/nfs/nfs4client.c
View file

@ -531,6 +531,13 @@ int nfs40_walk_client_list(struct nfs_client *new,
*result = pos;
dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n",
__func__, pos, atomic_read(&pos->cl_count));
goto out;
case -ERESTARTSYS:
case -ETIMEDOUT:
/* The callback path may have been inadvertently
* changed. Schedule recovery!
*/
nfs4_schedule_path_down_recovery(pos);
default:
goto out;
}

197
fs/nfs/nfs4proc.c
View file

@ -1068,6 +1068,7 @@ static void nfs4_opendata_free(struct kref *kref)
dput(p->dentry);
nfs_sb_deactive(sb);
nfs_fattr_free_names(&p->f_attr);
kfree(p->f_attr.mdsthreshold);
kfree(p);
}
@ -1137,12 +1138,71 @@ static void update_open_stateflags(struct nfs4_state *state, fmode_t fmode)
nfs4_state_set_mode_locked(state, state->state | fmode);
}
static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
static void nfs_test_and_clear_all_open_stateid(struct nfs4_state *state)
{
struct nfs_client *clp = state->owner->so_server->nfs_client;
bool need_recover = false;
if (test_and_clear_bit(NFS_O_RDONLY_STATE, &state->flags) && state->n_rdonly)
need_recover = true;
if (test_and_clear_bit(NFS_O_WRONLY_STATE, &state->flags) && state->n_wronly)
need_recover = true;
if (test_and_clear_bit(NFS_O_RDWR_STATE, &state->flags) && state->n_rdwr)
need_recover = true;
if (need_recover)
nfs4_state_mark_reclaim_nograce(clp, state);
}
static bool nfs_need_update_open_stateid(struct nfs4_state *state,
nfs4_stateid *stateid)
{
if (test_and_set_bit(NFS_OPEN_STATE, &state->flags) == 0)
return true;
if (!nfs4_stateid_match_other(stateid, &state->open_stateid)) {
nfs_test_and_clear_all_open_stateid(state);
return true;
}
if (nfs4_stateid_is_newer(stateid, &state->open_stateid))
return true;
return false;
}
static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
nfs4_stateid *stateid, fmode_t fmode)
{
clear_bit(NFS_O_RDWR_STATE, &state->flags);
switch (fmode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_WRITE:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
case FMODE_READ:
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
break;
case 0:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
}
if (stateid == NULL)
return;
if (!nfs_need_update_open_stateid(state, stateid))
return;
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
nfs4_stateid_copy(&state->stateid, stateid);
nfs4_stateid_copy(&state->open_stateid, stateid);
set_bit(NFS_OPEN_STATE, &state->flags);
}
static void nfs_clear_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
nfs_clear_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
}
static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
switch (fmode) {
case FMODE_READ:
set_bit(NFS_O_RDONLY_STATE, &state->flags);
@ -1153,13 +1213,11 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state, nfs4_stateid *
case FMODE_READ|FMODE_WRITE:
set_bit(NFS_O_RDWR_STATE, &state->flags);
}
}
static void nfs_set_open_stateid(struct nfs4_state *state, nfs4_stateid *stateid, fmode_t fmode)
{
write_seqlock(&state->seqlock);
nfs_set_open_stateid_locked(state, stateid, fmode);
write_sequnlock(&state->seqlock);
if (!nfs_need_update_open_stateid(state, stateid))
return;
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
nfs4_stateid_copy(&state->stateid, stateid);
nfs4_stateid_copy(&state->open_stateid, stateid);
}
static void __update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stateid, const nfs4_stateid *deleg_stateid, fmode_t fmode)
@ -1217,6 +1275,8 @@ static int update_open_stateid(struct nfs4_state *state, nfs4_stateid *open_stat
__update_open_stateid(state, open_stateid, NULL, fmode);
ret = 1;
}
if (test_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags))
nfs4_schedule_state_manager(state->owner->so_server->nfs_client);
return ret;
}
@ -1450,12 +1510,15 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
struct nfs4_state *newstate;
int ret;
/* Don't trigger recovery in nfs_test_and_clear_all_open_stateid */
clear_bit(NFS_O_RDWR_STATE, &state->flags);
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
/* memory barrier prior to reading state->n_* */
clear_bit(NFS_DELEGATED_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
smp_rmb();
if (state->n_rdwr != 0) {
clear_bit(NFS_O_RDWR_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_READ|FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
@ -1463,7 +1526,6 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
return -ESTALE;
}
if (state->n_wronly != 0) {
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_WRITE, &newstate);
if (ret != 0)
return ret;
@ -1471,7 +1533,6 @@ static int nfs4_open_recover(struct nfs4_opendata *opendata, struct nfs4_state *
return -ESTALE;
}
if (state->n_rdonly != 0) {
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
ret = nfs4_open_recover_helper(opendata, FMODE_READ, &newstate);
if (ret != 0)
return ret;
@ -2244,10 +2305,12 @@ static int _nfs4_do_open(struct inode *dir,
}
}
if (ctx_th && server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
if (!opendata->f_attr.mdsthreshold)
goto err_free_label;
if (server->attr_bitmask[2] & FATTR4_WORD2_MDSTHRESHOLD) {
if (!opendata->f_attr.mdsthreshold) {
opendata->f_attr.mdsthreshold = pnfs_mdsthreshold_alloc();
if (!opendata->f_attr.mdsthreshold)
goto err_free_label;
}
opendata->o_arg.open_bitmap = &nfs4_pnfs_open_bitmap[0];
}
if (dentry->d_inode != NULL)
@ -2275,11 +2338,10 @@ static int _nfs4_do_open(struct inode *dir,
if (opendata->file_created)
*opened |= FILE_CREATED;
if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server))
if (pnfs_use_threshold(ctx_th, opendata->f_attr.mdsthreshold, server)) {
*ctx_th = opendata->f_attr.mdsthreshold;
else
kfree(opendata->f_attr.mdsthreshold);
opendata->f_attr.mdsthreshold = NULL;
opendata->f_attr.mdsthreshold = NULL;
}
nfs4_label_free(olabel);
@ -2289,7 +2351,6 @@ static int _nfs4_do_open(struct inode *dir,
err_free_label:
nfs4_label_free(olabel);
err_opendata_put:
kfree(opendata->f_attr.mdsthreshold);
nfs4_opendata_put(opendata);
err_put_state_owner:
nfs4_put_state_owner(sp);
@ -2479,26 +2540,6 @@ static void nfs4_free_closedata(void *data)
kfree(calldata);
}
static void nfs4_close_clear_stateid_flags(struct nfs4_state *state,
fmode_t fmode)
{
spin_lock(&state->owner->so_lock);
clear_bit(NFS_O_RDWR_STATE, &state->flags);
switch (fmode & (FMODE_READ|FMODE_WRITE)) {
case FMODE_WRITE:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
break;
case FMODE_READ:
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
break;
case 0:
clear_bit(NFS_O_RDONLY_STATE, &state->flags);
clear_bit(NFS_O_WRONLY_STATE, &state->flags);
clear_bit(NFS_OPEN_STATE, &state->flags);
}
spin_unlock(&state->owner->so_lock);
}
static void nfs4_close_done(struct rpc_task *task, void *data)
{
struct nfs4_closedata *calldata = data;
@ -2517,9 +2558,9 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
if (calldata->roc)
pnfs_roc_set_barrier(state->inode,
calldata->roc_barrier);
nfs_set_open_stateid(state, &calldata->res.stateid, 0);
nfs_clear_open_stateid(state, &calldata->res.stateid, 0);
renew_lease(server, calldata->timestamp);
break;
goto out_release;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_OLD_STATEID:
@ -2533,7 +2574,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
goto out_release;
}
}
nfs4_close_clear_stateid_flags(state, calldata->arg.fmode);
nfs_clear_open_stateid(state, NULL, calldata->arg.fmode);
out_release:
nfs_release_seqid(calldata->arg.seqid);
nfs_refresh_inode(calldata->inode, calldata->res.fattr);
@ -3507,49 +3548,6 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
return 1;
}
static int _nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_server *server = NFS_SERVER(old_dir);
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.new_dir = NFS_FH(new_dir),
.old_name = old_name,
.new_name = new_name,
};
struct nfs_renameres res = {
.server = server,
};
struct rpc_message msg = {
.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_RENAME],
.rpc_argp = &arg,
.rpc_resp = &res,
};
int status = -ENOMEM;
status = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, &res.seq_res, 1);
if (!status) {
update_changeattr(old_dir, &res.old_cinfo);
update_changeattr(new_dir, &res.new_cinfo);
}
return status;
}
static int nfs4_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs4_exception exception = { };
int err;
do {
err = _nfs4_proc_rename(old_dir, old_name,
new_dir, new_name);
trace_nfs4_rename(old_dir, old_name, new_dir, new_name, err);
err = nfs4_handle_exception(NFS_SERVER(old_dir), err,
&exception);
} while (exception.retry);
return err;
}
static int _nfs4_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
struct nfs_server *server = NFS_SERVER(inode);
@ -4884,6 +4882,20 @@ nfs4_init_uniform_client_string(const struct nfs_client *clp,
nodename);
}
/*
* nfs4_callback_up_net() starts only "tcp" and "tcp6" callback
* services. Advertise one based on the address family of the
* clientaddr.
*/
static unsigned int
nfs4_init_callback_netid(const struct nfs_client *clp, char *buf, size_t len)
{
if (strchr(clp->cl_ipaddr, ':') != NULL)
return scnprintf(buf, len, "tcp6");
else
return scnprintf(buf, len, "tcp");
}
/**
* nfs4_proc_setclientid - Negotiate client ID
* @clp: state data structure
@ -4925,12 +4937,10 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program,
setclientid.sc_name,
sizeof(setclientid.sc_name));
/* cb_client4 */
rcu_read_lock();
setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
sizeof(setclientid.sc_netid), "%s",
rpc_peeraddr2str(clp->cl_rpcclient,
RPC_DISPLAY_NETID));
rcu_read_unlock();
setclientid.sc_netid_len =
nfs4_init_callback_netid(clp,
setclientid.sc_netid,
sizeof(setclientid.sc_netid));
setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
sizeof(setclientid.sc_uaddr), "%s.%u.%u",
clp->cl_ipaddr, port >> 8, port & 255);
@ -8408,7 +8418,6 @@ const struct nfs_rpc_ops nfs_v4_clientops = {
.unlink_setup = nfs4_proc_unlink_setup,
.unlink_rpc_prepare = nfs4_proc_unlink_rpc_prepare,
.unlink_done = nfs4_proc_unlink_done,
.rename = nfs4_proc_rename,
.rename_setup = nfs4_proc_rename_setup,
.rename_rpc_prepare = nfs4_proc_rename_rpc_prepare,
.rename_done = nfs4_proc_rename_done,

6
fs/nfs/nfs4state.c
View file

@ -1316,7 +1316,7 @@ static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_st
return 1;
}
static int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state)
{
set_bit(NFS_STATE_RECLAIM_NOGRACE, &state->flags);
clear_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
@ -2075,8 +2075,10 @@ int nfs4_discover_server_trunking(struct nfs_client *clp,
switch (status) {
case 0:
break;
case -NFS4ERR_DELAY:
case -ETIMEDOUT:
if (clnt->cl_softrtry)
break;
case -NFS4ERR_DELAY:
case -EAGAIN:
ssleep(1);
case -NFS4ERR_STALE_CLIENTID:

3
fs/nfs/nfs4xdr.c
View file

@ -203,8 +203,7 @@ static int nfs4_stat_to_errno(int);
2 + encode_verifier_maxsz + 5 + \
nfs4_label_maxsz)
#define decode_readdir_maxsz (op_decode_hdr_maxsz + \
decode_verifier_maxsz + \
nfs4_label_maxsz + nfs4_fattr_maxsz)
decode_verifier_maxsz)
#define encode_readlink_maxsz (op_encode_hdr_maxsz)
#define decode_readlink_maxsz (op_decode_hdr_maxsz + 1)
#define encode_write_maxsz (op_encode_hdr_maxsz + \

17
fs/nfs/pnfs.c
View file

@ -662,7 +662,18 @@ pnfs_destroy_all_layouts(struct nfs_client *clp)
*/
static bool pnfs_seqid_is_newer(u32 s1, u32 s2)
{
return (s32)s1 - (s32)s2 > 0;
return (s32)(s1 - s2) > 0;
}
static void
pnfs_verify_layout_stateid(struct pnfs_layout_hdr *lo,
const nfs4_stateid *new,
struct list_head *free_me_list)
{
if (nfs4_stateid_match_other(&lo->plh_stateid, new))
return;
/* Layout is new! Kill existing layout segments */
pnfs_mark_matching_lsegs_invalid(lo, free_me_list, NULL);
}
/* update lo->plh_stateid with new if is more recent */
@ -1315,6 +1326,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
struct nfs4_layoutget_res *res = &lgp->res;
struct pnfs_layout_segment *lseg;
struct inode *ino = lo->plh_inode;
LIST_HEAD(free_me);
int status = 0;
/* Inject layout blob into I/O device driver */
@ -1341,6 +1353,8 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
goto out_forget_reply;
}
/* Check that the new stateid matches the old stateid */
pnfs_verify_layout_stateid(lo, &res->stateid, &free_me);
/* Done processing layoutget. Set the layout stateid */
pnfs_set_layout_stateid(lo, &res->stateid, false);
@ -1355,6 +1369,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
}
spin_unlock(&ino->i_lock);
pnfs_free_lseg_list(&free_me);
return lseg;
out:
return ERR_PTR(status);

25
fs/nfs/proc.c
View file

@ -356,30 +356,6 @@ nfs_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
return 1;
}
static int
nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
struct inode *new_dir, struct qstr *new_name)
{
struct nfs_renameargs arg = {
.old_dir = NFS_FH(old_dir),
.old_name = old_name,
.new_dir = NFS_FH(new_dir),
.new_name = new_name,
};
struct rpc_message msg = {
.rpc_proc = &nfs_procedures[NFSPROC_RENAME],
.rpc_argp = &arg,
};
int status;
dprintk("NFS call rename %s -> %s\n", old_name->name, new_name->name);
status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
nfs_mark_for_revalidate(old_dir);
nfs_mark_for_revalidate(new_dir);
dprintk("NFS reply rename: %d\n", status);
return status;
}
static int
nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
{
@ -745,7 +721,6 @@ const struct nfs_rpc_ops nfs_v2_clientops = {
.unlink_setup = nfs_proc_unlink_setup,
.unlink_rpc_prepare = nfs_proc_unlink_rpc_prepare,
.unlink_done = nfs_proc_unlink_done,
.rename = nfs_proc_rename,
.rename_setup = nfs_proc_rename_setup,
.rename_rpc_prepare = nfs_proc_rename_rpc_prepare,
.rename_done = nfs_proc_rename_done,

35
fs/nfs/unlink.c
View file

@ -14,6 +14,7 @@
#include <linux/sched.h>
#include <linux/wait.h>
#include <linux/namei.h>
#include <linux/fsnotify.h>
#include "internal.h"
#include "nfs4_fs.h"
@ -353,8 +354,8 @@ static void nfs_async_rename_done(struct rpc_task *task, void *calldata)
return;
}
if (task->tk_status != 0)
nfs_cancel_async_unlink(old_dentry);
if (data->complete)
data->complete(task, data);
}
/**
@ -399,9 +400,10 @@ static const struct rpc_call_ops nfs_rename_ops = {
*
* It's expected that valid references to the dentries and inodes are held
*/
static struct rpc_task *
struct rpc_task *
nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
struct dentry *old_dentry, struct dentry *new_dentry)
struct dentry *old_dentry, struct dentry *new_dentry,
void (*complete)(struct rpc_task *, struct nfs_renamedata *))
{
struct nfs_renamedata *data;
struct rpc_message msg = { };
@ -438,6 +440,7 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
data->new_dentry = dget(new_dentry);
nfs_fattr_init(&data->old_fattr);
nfs_fattr_init(&data->new_fattr);
data->complete = complete;
/* set up nfs_renameargs */
data->args.old_dir = NFS_FH(old_dir);
@ -456,6 +459,27 @@ nfs_async_rename(struct inode *old_dir, struct inode *new_dir,
return rpc_run_task(&task_setup_data);
}
/*
* Perform tasks needed when a sillyrename is done such as cancelling the
* queued async unlink if it failed.
*/
static void
nfs_complete_sillyrename(struct rpc_task *task, struct nfs_renamedata *data)
{
struct dentry *dentry = data->old_dentry;
if (task->tk_status != 0) {
nfs_cancel_async_unlink(dentry);
return;
}
/*
* vfs_unlink and the like do not issue this when a file is
* sillyrenamed, so do it here.
*/
fsnotify_nameremove(dentry, 0);
}
#define SILLYNAME_PREFIX ".nfs"
#define SILLYNAME_PREFIX_LEN ((unsigned)sizeof(SILLYNAME_PREFIX) - 1)
#define SILLYNAME_FILEID_LEN ((unsigned)sizeof(u64) << 1)
@ -548,7 +572,8 @@ nfs_sillyrename(struct inode *dir, struct dentry *dentry)
}
/* run the rename task, undo unlink if it fails */
task = nfs_async_rename(dir, dir, dentry, sdentry);
task = nfs_async_rename(dir, dir, dentry, sdentry,
nfs_complete_sillyrename);
if (IS_ERR(task)) {
error = -EBUSY;
nfs_cancel_async_unlink(dentry);

2
include/linux/nfs_fs.h
View file

@ -92,6 +92,7 @@ struct nfs_open_context {
};
struct nfs_open_dir_context {
struct list_head list;
struct rpc_cred *cred;
unsigned long attr_gencount;
__u64 dir_cookie;
@ -510,7 +511,6 @@ extern void nfs_complete_unlink(struct dentry *dentry, struct inode *);
extern void nfs_wait_on_sillyrename(struct dentry *dentry);
extern void nfs_block_sillyrename(struct dentry *dentry);
extern void nfs_unblock_sillyrename(struct dentry *dentry);
extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry);
/*
* linux/fs/nfs/write.c

3
include/linux/nfs_xdr.h
View file

@ -1402,6 +1402,7 @@ struct nfs_renamedata {
struct inode *new_dir;
struct dentry *new_dentry;
struct nfs_fattr new_fattr;
void (*complete)(struct rpc_task *, struct nfs_renamedata *);
};
struct nfs_access_entry;
@ -1444,8 +1445,6 @@ struct nfs_rpc_ops {
void (*unlink_setup) (struct rpc_message *, struct inode *dir);
void (*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
int (*unlink_done) (struct rpc_task *, struct inode *);
int (*rename) (struct inode *, struct qstr *,
struct inode *, struct qstr *);
void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
void (*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);

3
include/linux/sunrpc/bc_xprt.h
View file

@ -32,7 +32,8 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <linux/sunrpc/sched.h>
#ifdef CONFIG_SUNRPC_BACKCHANNEL
struct rpc_rqst *xprt_alloc_bc_request(struct rpc_xprt *xprt);
struct rpc_rqst *xprt_lookup_bc_request(struct rpc_xprt *xprt, __be32 xid);
void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied);
void xprt_free_bc_request(struct rpc_rqst *req);
int xprt_setup_backchannel(struct rpc_xprt *, unsigned int min_reqs);
void xprt_destroy_backchannel(struct rpc_xprt *, unsigned int max_reqs);

93
net/sunrpc/backchannel_rqst.c
View file

@ -212,39 +212,23 @@ void xprt_destroy_backchannel(struct rpc_xprt *xprt, unsigned int max_reqs)
}
EXPORT_SYMBOL_GPL(xprt_destroy_backchannel);
/*
* One or more rpc_rqst structure have been preallocated during the
* backchannel setup. Buffer space for the send and private XDR buffers
* has been preallocated as well. Use xprt_alloc_bc_request to allocate
* to this request. Use xprt_free_bc_request to return it.
*
* We know that we're called in soft interrupt context, grab the spin_lock
* since there is no need to grab the bottom half spin_lock.
*
* Return an available rpc_rqst, otherwise NULL if non are available.
*/
struct rpc_rqst *xprt_alloc_bc_request(struct rpc_xprt *xprt)
static struct rpc_rqst *xprt_alloc_bc_request(struct rpc_xprt *xprt, __be32 xid)
{
struct rpc_rqst *req;
struct rpc_rqst *req = NULL;
dprintk("RPC: allocate a backchannel request\n");
spin_lock(&xprt->bc_pa_lock);
if (!list_empty(&xprt->bc_pa_list)) {
req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst,
rq_bc_pa_list);
list_del(&req->rq_bc_pa_list);
} else {
req = NULL;
}
spin_unlock(&xprt->bc_pa_lock);
if (list_empty(&xprt->bc_pa_list))
goto not_found;
if (req != NULL) {
set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);
req->rq_reply_bytes_recvd = 0;
req->rq_bytes_sent = 0;
memcpy(&req->rq_private_buf, &req->rq_rcv_buf,
req = list_first_entry(&xprt->bc_pa_list, struct rpc_rqst,
rq_bc_pa_list);
req->rq_reply_bytes_recvd = 0;
req->rq_bytes_sent = 0;
memcpy(&req->rq_private_buf, &req->rq_rcv_buf,
sizeof(req->rq_private_buf));
}
req->rq_xid = xid;
req->rq_connect_cookie = xprt->connect_cookie;
not_found:
dprintk("RPC: backchannel req=%p\n", req);
return req;
}
@ -259,6 +243,7 @@ void xprt_free_bc_request(struct rpc_rqst *req)
dprintk("RPC: free backchannel req=%p\n", req);
req->rq_connect_cookie = xprt->connect_cookie - 1;
smp_mb__before_clear_bit();
WARN_ON_ONCE(!test_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state));
clear_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);
@ -281,7 +266,57 @@ void xprt_free_bc_request(struct rpc_rqst *req)
* may be reused by a new callback request.
*/
spin_lock_bh(&xprt->bc_pa_lock);
list_add(&req->rq_bc_pa_list, &xprt->bc_pa_list);
list_add_tail(&req->rq_bc_pa_list, &xprt->bc_pa_list);
spin_unlock_bh(&xprt->bc_pa_lock);
}
/*
* One or more rpc_rqst structure have been preallocated during the
* backchannel setup. Buffer space for the send and private XDR buffers
* has been preallocated as well. Use xprt_alloc_bc_request to allocate
* to this request. Use xprt_free_bc_request to return it.
*
* We know that we're called in soft interrupt context, grab the spin_lock
* since there is no need to grab the bottom half spin_lock.
*
* Return an available rpc_rqst, otherwise NULL if non are available.
*/
struct rpc_rqst *xprt_lookup_bc_request(struct rpc_xprt *xprt, __be32 xid)
{
struct rpc_rqst *req;
spin_lock(&xprt->bc_pa_lock);
list_for_each_entry(req, &xprt->bc_pa_list, rq_bc_pa_list) {
if (req->rq_connect_cookie != xprt->connect_cookie)
continue;
if (req->rq_xid == xid)
goto found;
}
req = xprt_alloc_bc_request(xprt, xid);
found:
spin_unlock(&xprt->bc_pa_lock);
return req;
}
/*
* Add callback request to callback list. The callback
* service sleeps on the sv_cb_waitq waiting for new
* requests. Wake it up after adding enqueing the
* request.
*/
void xprt_complete_bc_request(struct rpc_rqst *req, uint32_t copied)
{
struct rpc_xprt *xprt = req->rq_xprt;
struct svc_serv *bc_serv = xprt->bc_serv;
req->rq_private_buf.len = copied;
set_bit(RPC_BC_PA_IN_USE, &req->rq_bc_pa_state);
dprintk("RPC: add callback request to list\n");
spin_lock(&bc_serv->sv_cb_lock);
list_del(&req->rq_bc_pa_list);
list_add(&req->rq_bc_list, &bc_serv->sv_cb_list);
wake_up(&bc_serv->sv_cb_waitq);
spin_unlock(&bc_serv->sv_cb_lock);
}

23
net/sunrpc/clnt.c
View file

@ -1363,6 +1363,7 @@ rpc_restart_call_prepare(struct rpc_task *task)
if (RPC_ASSASSINATED(task))
return 0;
task->tk_action = call_start;
task->tk_status = 0;
if (task->tk_ops->rpc_call_prepare != NULL)
task->tk_action = rpc_prepare_task;
return 1;
@ -1379,6 +1380,7 @@ rpc_restart_call(struct rpc_task *task)
if (RPC_ASSASSINATED(task))
return 0;
task->tk_action = call_start;
task->tk_status = 0;
return 1;
}
EXPORT_SYMBOL_GPL(rpc_restart_call);
@ -1728,9 +1730,7 @@ call_bind_status(struct rpc_task *task)
case -EPROTONOSUPPORT:
dprintk("RPC: %5u remote rpcbind version unavailable, retrying\n",
task->tk_pid);
task->tk_status = 0;
task->tk_action = call_bind;
return;
goto retry_timeout;
case -ECONNREFUSED: /* connection problems */
case -ECONNRESET:
case -ECONNABORTED:
@ -1756,6 +1756,7 @@ call_bind_status(struct rpc_task *task)
return;
retry_timeout:
task->tk_status = 0;
task->tk_action = call_timeout;
}
@ -1798,21 +1799,19 @@ call_connect_status(struct rpc_task *task)
trace_rpc_connect_status(task, status);
task->tk_status = 0;
switch (status) {
/* if soft mounted, test if we've timed out */
case -ETIMEDOUT:
task->tk_action = call_timeout;
return;
case -ECONNREFUSED:
case -ECONNRESET:
case -ECONNABORTED:
case -ENETUNREACH:
case -EHOSTUNREACH:
/* retry with existing socket, after a delay */
rpc_delay(task, 3*HZ);
if (RPC_IS_SOFTCONN(task))
break;
/* retry with existing socket, after a delay */
rpc_delay(task, 3*HZ);
case -EAGAIN:
task->tk_action = call_bind;
/* Check for timeouts before looping back to call_bind */
case -ETIMEDOUT:
task->tk_action = call_timeout;
return;
case 0:
clnt->cl_stats->netreconn++;
@ -2007,6 +2006,10 @@ call_status(struct rpc_task *task)
case -EHOSTDOWN:
case -EHOSTUNREACH:
case -ENETUNREACH:
if (RPC_IS_SOFTCONN(task)) {
rpc_exit(task, status);
break;
}
/*
* Delay any retries for 3 seconds, then handle as if it
* were a timeout.

3
net/sunrpc/sched.c
View file

@ -637,7 +637,8 @@ static void __rpc_queue_timer_fn(unsigned long ptr)
static void __rpc_atrun(struct rpc_task *task)
{
task->tk_status = 0;
if (task->tk_status == -ETIMEDOUT)
task->tk_status = 0;
}
/*

4
net/sunrpc/xprtrdma/rpc_rdma.c
View file

@ -649,9 +649,7 @@ rpcrdma_inline_fixup(struct rpc_rqst *rqst, char *srcp, int copy_len, int pad)
break;
page_base = 0;
}
rqst->rq_rcv_buf.page_len = olen - copy_len;
} else
rqst->rq_rcv_buf.page_len = 0;
}
if (copy_len && rqst->rq_rcv_buf.tail[0].iov_len) {
curlen = copy_len;

10
net/sunrpc/xprtrdma/transport.c
View file

@ -733,7 +733,7 @@ static void __exit xprt_rdma_cleanup(void)
{
int rc;
dprintk(KERN_INFO "RPCRDMA Module Removed, deregister RPC RDMA transport\n");
dprintk("RPCRDMA Module Removed, deregister RPC RDMA transport\n");
#ifdef RPC_DEBUG
if (sunrpc_table_header) {
unregister_sysctl_table(sunrpc_table_header);
@ -755,14 +755,14 @@ static int __init xprt_rdma_init(void)
if (rc)
return rc;
dprintk(KERN_INFO "RPCRDMA Module Init, register RPC RDMA transport\n");
dprintk("RPCRDMA Module Init, register RPC RDMA transport\n");
dprintk(KERN_INFO "Defaults:\n");
dprintk(KERN_INFO "\tSlots %d\n"
dprintk("Defaults:\n");
dprintk("\tSlots %d\n"
"\tMaxInlineRead %d\n\tMaxInlineWrite %d\n",
xprt_rdma_slot_table_entries,
xprt_rdma_max_inline_read, xprt_rdma_max_inline_write);
dprintk(KERN_INFO "\tPadding %d\n\tMemreg %d\n",
dprintk("\tPadding %d\n\tMemreg %d\n",
xprt_rdma_inline_write_padding, xprt_rdma_memreg_strategy);
#ifdef RPC_DEBUG

28
net/sunrpc/xprtsock.c
View file

@ -1306,41 +1306,29 @@ static inline int xs_tcp_read_reply(struct rpc_xprt *xprt,
* If we're unable to obtain the rpc_rqst we schedule the closing of the
* connection and return -1.
*/
static inline int xs_tcp_read_callback(struct rpc_xprt *xprt,
static int xs_tcp_read_callback(struct rpc_xprt *xprt,
struct xdr_skb_reader *desc)
{
struct sock_xprt *transport =
container_of(xprt, struct sock_xprt, xprt);
struct rpc_rqst *req;
req = xprt_alloc_bc_request(xprt);
/* Look up and lock the request corresponding to the given XID */
spin_lock(&xprt->transport_lock);
req = xprt_lookup_bc_request(xprt, transport->tcp_xid);
if (req == NULL) {
spin_unlock(&xprt->transport_lock);
printk(KERN_WARNING "Callback slot table overflowed\n");
xprt_force_disconnect(xprt);
return -1;
}
req->rq_xid = transport->tcp_xid;
dprintk("RPC: read callback XID %08x\n", ntohl(req->rq_xid));
xs_tcp_read_common(xprt, desc, req);
if (!(transport->tcp_flags & TCP_RCV_COPY_DATA)) {
struct svc_serv *bc_serv = xprt->bc_serv;
/*
* Add callback request to callback list. The callback
* service sleeps on the sv_cb_waitq waiting for new
* requests. Wake it up after adding enqueing the
* request.
*/
dprintk("RPC: add callback request to list\n");
spin_lock(&bc_serv->sv_cb_lock);
list_add(&req->rq_bc_list, &bc_serv->sv_cb_list);
spin_unlock(&bc_serv->sv_cb_lock);
wake_up(&bc_serv->sv_cb_waitq);
}
req->rq_private_buf.len = transport->tcp_copied;
if (!(transport->tcp_flags & TCP_RCV_COPY_DATA))
xprt_complete_bc_request(req, transport->tcp_copied);
spin_unlock(&xprt->transport_lock);
return 0;
}