[PATCH 009 of 18] knfsd: nfsd4: pass saved and current fh together into nfsd4 operations.

From: NeilBrown
Date: Thu Dec 07 2006 - 20:18:04 EST


From: J.Bruce Fields <bfields@xxxxxxxxxxxx>

Pass the saved and current filehandles together into all the nfsd4 compound
operations.

I want a unified interface to these operations so we can just call them by
pointer and throw out the huge switch statement.

Also I'll eventually want a structure like this--that holds the state used
during compound processing--for deferral.

Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxxxxxx>
Signed-off-by: Neil Brown <neilb@xxxxxxx>

### Diffstat output
./fs/nfsd/nfs4proc.c | 348 +++++++++++++++++++++++++-------------------
./fs/nfsd/nfs4state.c | 68 +++++---
./include/linux/nfsd/xdr4.h | 22 +-
3 files changed, 259 insertions(+), 179 deletions(-)

diff .prev/fs/nfsd/nfs4proc.c ./fs/nfsd/nfs4proc.c
--- .prev/fs/nfsd/nfs4proc.c 2006-12-08 12:08:12.000000000 +1100
+++ ./fs/nfsd/nfs4proc.c 2006-12-08 12:09:27.000000000 +1100
@@ -162,7 +162,8 @@ do_open_fhandle(struct svc_rqst *rqstp,


static inline __be32
-nfsd4_open(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open *open, struct nfs4_stateowner **replay_owner)
+nfsd4_open(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_open *open, struct nfs4_stateowner **replay_owner)
{
__be32 status;
dprintk("NFSD: nfsd4_open filename %.*s op_stateowner %p\n",
@@ -179,11 +180,11 @@ nfsd4_open(struct svc_rqst *rqstp, struc
status = nfsd4_process_open1(open);
if (status == nfserr_replay_me) {
struct nfs4_replay *rp = &open->op_stateowner->so_replay;
- fh_put(current_fh);
- current_fh->fh_handle.fh_size = rp->rp_openfh_len;
- memcpy(&current_fh->fh_handle.fh_base, rp->rp_openfh,
+ fh_put(&cstate->current_fh);
+ cstate->current_fh.fh_handle.fh_size = rp->rp_openfh_len;
+ memcpy(&cstate->current_fh.fh_handle.fh_base, rp->rp_openfh,
rp->rp_openfh_len);
- status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
+ status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
if (status)
dprintk("nfsd4_open: replay failed"
" restoring previous filehandle\n");
@@ -215,7 +216,8 @@ nfsd4_open(struct svc_rqst *rqstp, struc
* (3) set open->op_truncate if the file is to be
* truncated after opening, (4) do permission checking.
*/
- status = do_open_lookup(rqstp, current_fh, open);
+ status = do_open_lookup(rqstp, &cstate->current_fh,
+ open);
if (status)
goto out;
break;
@@ -227,7 +229,8 @@ nfsd4_open(struct svc_rqst *rqstp, struc
* open->op_truncate if the file is to be truncated
* after opening, (3) do permission checking.
*/
- status = do_open_fhandle(rqstp, current_fh, open);
+ status = do_open_fhandle(rqstp, &cstate->current_fh,
+ open);
if (status)
goto out;
break;
@@ -248,7 +251,7 @@ nfsd4_open(struct svc_rqst *rqstp, struc
* successful, it (1) truncates the file if open->op_truncate was
* set, (2) sets open->op_stateid, (3) sets open->op_delegation.
*/
- status = nfsd4_process_open2(rqstp, current_fh, open);
+ status = nfsd4_process_open2(rqstp, &cstate->current_fh, open);
out:
if (open->op_stateowner) {
nfs4_get_stateowner(open->op_stateowner);
@@ -262,52 +265,54 @@ out:
* filehandle-manipulating ops.
*/
static inline __be32
-nfsd4_getfh(struct svc_fh *current_fh, struct svc_fh **getfh)
+nfsd4_getfh(struct nfsd4_compound_state *cstate, struct svc_fh **getfh)
{
- if (!current_fh->fh_dentry)
+ if (!cstate->current_fh.fh_dentry)
return nfserr_nofilehandle;

- *getfh = current_fh;
+ *getfh = &cstate->current_fh;
return nfs_ok;
}

static inline __be32
-nfsd4_putfh(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_putfh *putfh)
+nfsd4_putfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_putfh *putfh)
{
- fh_put(current_fh);
- current_fh->fh_handle.fh_size = putfh->pf_fhlen;
- memcpy(&current_fh->fh_handle.fh_base, putfh->pf_fhval, putfh->pf_fhlen);
- return fh_verify(rqstp, current_fh, 0, MAY_NOP);
+ fh_put(&cstate->current_fh);
+ cstate->current_fh.fh_handle.fh_size = putfh->pf_fhlen;
+ memcpy(&cstate->current_fh.fh_handle.fh_base, putfh->pf_fhval,
+ putfh->pf_fhlen);
+ return fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
}

static inline __be32
-nfsd4_putrootfh(struct svc_rqst *rqstp, struct svc_fh *current_fh)
+nfsd4_putrootfh(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate)
{
__be32 status;

- fh_put(current_fh);
- status = exp_pseudoroot(rqstp->rq_client, current_fh,
+ fh_put(&cstate->current_fh);
+ status = exp_pseudoroot(rqstp->rq_client, &cstate->current_fh,
&rqstp->rq_chandle);
return status;
}

static inline __be32
-nfsd4_restorefh(struct svc_fh *current_fh, struct svc_fh *save_fh)
+nfsd4_restorefh(struct nfsd4_compound_state *cstate)
{
- if (!save_fh->fh_dentry)
+ if (!cstate->save_fh.fh_dentry)
return nfserr_restorefh;

- fh_dup2(current_fh, save_fh);
+ fh_dup2(&cstate->current_fh, &cstate->save_fh);
return nfs_ok;
}

static inline __be32
-nfsd4_savefh(struct svc_fh *current_fh, struct svc_fh *save_fh)
+nfsd4_savefh(struct nfsd4_compound_state *cstate)
{
- if (!current_fh->fh_dentry)
+ if (!cstate->current_fh.fh_dentry)
return nfserr_nofilehandle;

- fh_dup2(save_fh, current_fh);
+ fh_dup2(&cstate->save_fh, &cstate->current_fh);
return nfs_ok;
}

@@ -315,17 +320,20 @@ nfsd4_savefh(struct svc_fh *current_fh,
* misc nfsv4 ops
*/
static inline __be32
-nfsd4_access(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_access *access)
+nfsd4_access(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_access *access)
{
if (access->ac_req_access & ~NFS3_ACCESS_FULL)
return nfserr_inval;

access->ac_resp_access = access->ac_req_access;
- return nfsd_access(rqstp, current_fh, &access->ac_resp_access, &access->ac_supported);
+ return nfsd_access(rqstp, &cstate->current_fh, &access->ac_resp_access,
+ &access->ac_supported);
}

static inline __be32
-nfsd4_commit(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_commit *commit)
+nfsd4_commit(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_commit *commit)
{
__be32 status;

@@ -333,14 +341,16 @@ nfsd4_commit(struct svc_rqst *rqstp, str
*p++ = nfssvc_boot.tv_sec;
*p++ = nfssvc_boot.tv_usec;

- status = nfsd_commit(rqstp, current_fh, commit->co_offset, commit->co_count);
+ status = nfsd_commit(rqstp, &cstate->current_fh, commit->co_offset,
+ commit->co_count);
if (status == nfserr_symlink)
status = nfserr_inval;
return status;
}

static __be32
-nfsd4_create(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_create *create)
+nfsd4_create(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_create *create)
{
struct svc_fh resfh;
__be32 status;
@@ -348,7 +358,7 @@ nfsd4_create(struct svc_rqst *rqstp, str

fh_init(&resfh, NFS4_FHSIZE);

- status = fh_verify(rqstp, current_fh, S_IFDIR, MAY_CREATE);
+ status = fh_verify(rqstp, &cstate->current_fh, S_IFDIR, MAY_CREATE);
if (status == nfserr_symlink)
status = nfserr_notdir;
if (status)
@@ -365,9 +375,10 @@ nfsd4_create(struct svc_rqst *rqstp, str
*/
create->cr_linkname[create->cr_linklen] = 0;

- status = nfsd_symlink(rqstp, current_fh, create->cr_name,
- create->cr_namelen, create->cr_linkname,
- create->cr_linklen, &resfh, &create->cr_iattr);
+ status = nfsd_symlink(rqstp, &cstate->current_fh,
+ create->cr_name, create->cr_namelen,
+ create->cr_linkname, create->cr_linklen,
+ &resfh, &create->cr_iattr);
break;

case NF4BLK:
@@ -375,9 +386,9 @@ nfsd4_create(struct svc_rqst *rqstp, str
if (MAJOR(rdev) != create->cr_specdata1 ||
MINOR(rdev) != create->cr_specdata2)
return nfserr_inval;
- status = nfsd_create(rqstp, current_fh, create->cr_name,
- create->cr_namelen, &create->cr_iattr,
- S_IFBLK, rdev, &resfh);
+ status = nfsd_create(rqstp, &cstate->current_fh,
+ create->cr_name, create->cr_namelen,
+ &create->cr_iattr, S_IFBLK, rdev, &resfh);
break;

case NF4CHR:
@@ -385,28 +396,28 @@ nfsd4_create(struct svc_rqst *rqstp, str
if (MAJOR(rdev) != create->cr_specdata1 ||
MINOR(rdev) != create->cr_specdata2)
return nfserr_inval;
- status = nfsd_create(rqstp, current_fh, create->cr_name,
- create->cr_namelen, &create->cr_iattr,
- S_IFCHR, rdev, &resfh);
+ status = nfsd_create(rqstp, &cstate->current_fh,
+ create->cr_name, create->cr_namelen,
+ &create->cr_iattr,S_IFCHR, rdev, &resfh);
break;

case NF4SOCK:
- status = nfsd_create(rqstp, current_fh, create->cr_name,
- create->cr_namelen, &create->cr_iattr,
- S_IFSOCK, 0, &resfh);
+ status = nfsd_create(rqstp, &cstate->current_fh,
+ create->cr_name, create->cr_namelen,
+ &create->cr_iattr, S_IFSOCK, 0, &resfh);
break;

case NF4FIFO:
- status = nfsd_create(rqstp, current_fh, create->cr_name,
- create->cr_namelen, &create->cr_iattr,
- S_IFIFO, 0, &resfh);
+ status = nfsd_create(rqstp, &cstate->current_fh,
+ create->cr_name, create->cr_namelen,
+ &create->cr_iattr, S_IFIFO, 0, &resfh);
break;

case NF4DIR:
create->cr_iattr.ia_valid &= ~ATTR_SIZE;
- status = nfsd_create(rqstp, current_fh, create->cr_name,
- create->cr_namelen, &create->cr_iattr,
- S_IFDIR, 0, &resfh);
+ status = nfsd_create(rqstp, &cstate->current_fh,
+ create->cr_name, create->cr_namelen,
+ &create->cr_iattr, S_IFDIR, 0, &resfh);
break;

default:
@@ -414,9 +425,9 @@ nfsd4_create(struct svc_rqst *rqstp, str
}

if (!status) {
- fh_unlock(current_fh);
- set_change_info(&create->cr_cinfo, current_fh);
- fh_dup2(current_fh, &resfh);
+ fh_unlock(&cstate->current_fh);
+ set_change_info(&create->cr_cinfo, &cstate->current_fh);
+ fh_dup2(&cstate->current_fh, &resfh);
}

fh_put(&resfh);
@@ -424,11 +435,12 @@ nfsd4_create(struct svc_rqst *rqstp, str
}

static inline __be32
-nfsd4_getattr(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_getattr *getattr)
+nfsd4_getattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_getattr *getattr)
{
__be32 status;

- status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
+ status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
if (status)
return status;

@@ -438,26 +450,27 @@ nfsd4_getattr(struct svc_rqst *rqstp, st
getattr->ga_bmval[0] &= NFSD_SUPPORTED_ATTRS_WORD0;
getattr->ga_bmval[1] &= NFSD_SUPPORTED_ATTRS_WORD1;

- getattr->ga_fhp = current_fh;
+ getattr->ga_fhp = &cstate->current_fh;
return nfs_ok;
}

static inline __be32
-nfsd4_link(struct svc_rqst *rqstp, struct svc_fh *current_fh,
- struct svc_fh *save_fh, struct nfsd4_link *link)
+nfsd4_link(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_link *link)
{
__be32 status = nfserr_nofilehandle;

- if (!save_fh->fh_dentry)
+ if (!cstate->save_fh.fh_dentry)
return status;
- status = nfsd_link(rqstp, current_fh, link->li_name, link->li_namelen, save_fh);
+ status = nfsd_link(rqstp, &cstate->current_fh,
+ link->li_name, link->li_namelen, &cstate->save_fh);
if (!status)
- set_change_info(&link->li_cinfo, current_fh);
+ set_change_info(&link->li_cinfo, &cstate->current_fh);
return status;
}

static __be32
-nfsd4_lookupp(struct svc_rqst *rqstp, struct svc_fh *current_fh)
+nfsd4_lookupp(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate)
{
struct svc_fh tmp_fh;
__be32 ret;
@@ -466,22 +479,27 @@ nfsd4_lookupp(struct svc_rqst *rqstp, st
if((ret = exp_pseudoroot(rqstp->rq_client, &tmp_fh,
&rqstp->rq_chandle)) != 0)
return ret;
- if (tmp_fh.fh_dentry == current_fh->fh_dentry) {
+ if (tmp_fh.fh_dentry == cstate->current_fh.fh_dentry) {
fh_put(&tmp_fh);
return nfserr_noent;
}
fh_put(&tmp_fh);
- return nfsd_lookup(rqstp, current_fh, "..", 2, current_fh);
+ return nfsd_lookup(rqstp, &cstate->current_fh,
+ "..", 2, &cstate->current_fh);
}

static inline __be32
-nfsd4_lookup(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lookup *lookup)
+nfsd4_lookup(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_lookup *lookup)
{
- return nfsd_lookup(rqstp, current_fh, lookup->lo_name, lookup->lo_len, current_fh);
+ return nfsd_lookup(rqstp, &cstate->current_fh,
+ lookup->lo_name, lookup->lo_len,
+ &cstate->current_fh);
}

static inline __be32
-nfsd4_read(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_read *read)
+nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_read *read)
{
__be32 status;

@@ -493,7 +511,8 @@ nfsd4_read(struct svc_rqst *rqstp, struc

nfs4_lock_state();
/* check stateid */
- if ((status = nfs4_preprocess_stateid_op(current_fh, &read->rd_stateid,
+ if ((status = nfs4_preprocess_stateid_op(&cstate->current_fh,
+ &read->rd_stateid,
CHECK_FH | RD_STATE, &read->rd_filp))) {
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
goto out;
@@ -504,12 +523,13 @@ nfsd4_read(struct svc_rqst *rqstp, struc
out:
nfs4_unlock_state();
read->rd_rqstp = rqstp;
- read->rd_fhp = current_fh;
+ read->rd_fhp = &cstate->current_fh;
return status;
}

static inline __be32
-nfsd4_readdir(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_readdir *readdir)
+nfsd4_readdir(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_readdir *readdir)
{
u64 cookie = readdir->rd_cookie;
static const nfs4_verifier zeroverf;
@@ -527,48 +547,51 @@ nfsd4_readdir(struct svc_rqst *rqstp, st
return nfserr_bad_cookie;

readdir->rd_rqstp = rqstp;
- readdir->rd_fhp = current_fh;
+ readdir->rd_fhp = &cstate->current_fh;
return nfs_ok;
}

static inline __be32
-nfsd4_readlink(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_readlink *readlink)
+nfsd4_readlink(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_readlink *readlink)
{
readlink->rl_rqstp = rqstp;
- readlink->rl_fhp = current_fh;
+ readlink->rl_fhp = &cstate->current_fh;
return nfs_ok;
}

static inline __be32
-nfsd4_remove(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_remove *remove)
+nfsd4_remove(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_remove *remove)
{
__be32 status;

if (nfs4_in_grace())
return nfserr_grace;
- status = nfsd_unlink(rqstp, current_fh, 0, remove->rm_name, remove->rm_namelen);
+ status = nfsd_unlink(rqstp, &cstate->current_fh, 0,
+ remove->rm_name, remove->rm_namelen);
if (status == nfserr_symlink)
return nfserr_notdir;
if (!status) {
- fh_unlock(current_fh);
- set_change_info(&remove->rm_cinfo, current_fh);
+ fh_unlock(&cstate->current_fh);
+ set_change_info(&remove->rm_cinfo, &cstate->current_fh);
}
return status;
}

static inline __be32
-nfsd4_rename(struct svc_rqst *rqstp, struct svc_fh *current_fh,
- struct svc_fh *save_fh, struct nfsd4_rename *rename)
+nfsd4_rename(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_rename *rename)
{
__be32 status = nfserr_nofilehandle;

- if (!save_fh->fh_dentry)
+ if (!cstate->save_fh.fh_dentry)
return status;
- if (nfs4_in_grace() && !(save_fh->fh_export->ex_flags
+ if (nfs4_in_grace() && !(cstate->save_fh.fh_export->ex_flags
& NFSEXP_NOSUBTREECHECK))
return nfserr_grace;
- status = nfsd_rename(rqstp, save_fh, rename->rn_sname,
- rename->rn_snamelen, current_fh,
+ status = nfsd_rename(rqstp, &cstate->save_fh, rename->rn_sname,
+ rename->rn_snamelen, &cstate->current_fh,
rename->rn_tname, rename->rn_tnamelen);

/* the underlying filesystem returns different error's than required
@@ -576,27 +599,28 @@ nfsd4_rename(struct svc_rqst *rqstp, str
if (status == nfserr_isdir)
status = nfserr_exist;
else if ((status == nfserr_notdir) &&
- (S_ISDIR(save_fh->fh_dentry->d_inode->i_mode) &&
- S_ISDIR(current_fh->fh_dentry->d_inode->i_mode)))
+ (S_ISDIR(cstate->save_fh.fh_dentry->d_inode->i_mode) &&
+ S_ISDIR(cstate->current_fh.fh_dentry->d_inode->i_mode)))
status = nfserr_exist;
else if (status == nfserr_symlink)
status = nfserr_notdir;

if (!status) {
- set_change_info(&rename->rn_sinfo, current_fh);
- set_change_info(&rename->rn_tinfo, save_fh);
+ set_change_info(&rename->rn_sinfo, &cstate->current_fh);
+ set_change_info(&rename->rn_tinfo, &cstate->save_fh);
}
return status;
}

static inline __be32
-nfsd4_setattr(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_setattr *setattr)
+nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_setattr *setattr)
{
__be32 status = nfs_ok;

if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(current_fh,
+ status = nfs4_preprocess_stateid_op(&cstate->current_fh,
&setattr->sa_stateid, CHECK_FH | WR_STATE, NULL);
nfs4_unlock_state();
if (status) {
@@ -606,16 +630,18 @@ nfsd4_setattr(struct svc_rqst *rqstp, st
}
status = nfs_ok;
if (setattr->sa_acl != NULL)
- status = nfsd4_set_nfs4_acl(rqstp, current_fh, setattr->sa_acl);
+ status = nfsd4_set_nfs4_acl(rqstp, &cstate->current_fh,
+ setattr->sa_acl);
if (status)
return status;
- status = nfsd_setattr(rqstp, current_fh, &setattr->sa_iattr,
+ status = nfsd_setattr(rqstp, &cstate->current_fh, &setattr->sa_iattr,
0, (time_t)0);
return status;
}

static inline __be32
-nfsd4_write(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_write *write)
+nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_write *write)
{
stateid_t *stateid = &write->wr_stateid;
struct file *filp = NULL;
@@ -628,7 +654,7 @@ nfsd4_write(struct svc_rqst *rqstp, stru
return nfserr_inval;

nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(current_fh, stateid,
+ status = nfs4_preprocess_stateid_op(&cstate->current_fh, stateid,
CHECK_FH | WR_STATE, &filp);
if (filp)
get_file(filp);
@@ -645,9 +671,9 @@ nfsd4_write(struct svc_rqst *rqstp, stru
*p++ = nfssvc_boot.tv_sec;
*p++ = nfssvc_boot.tv_usec;

- status = nfsd_write(rqstp, current_fh, filp, write->wr_offset,
- rqstp->rq_vec, write->wr_vlen, write->wr_buflen,
- &write->wr_how_written);
+ status = nfsd_write(rqstp, &cstate->current_fh, filp,
+ write->wr_offset, rqstp->rq_vec, write->wr_vlen,
+ write->wr_buflen, &write->wr_how_written);
if (filp)
fput(filp);

@@ -662,13 +688,14 @@ nfsd4_write(struct svc_rqst *rqstp, stru
* to NFS_OK after the call; NVERIFY by mapping NFSERR_NOT_SAME to NFS_OK.
*/
static __be32
-nfsd4_verify(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_verify *verify)
+nfsd4_verify(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_verify *verify)
{
__be32 *buf, *p;
int count;
__be32 status;

- status = fh_verify(rqstp, current_fh, 0, MAY_NOP);
+ status = fh_verify(rqstp, &cstate->current_fh, 0, MAY_NOP);
if (status)
return status;

@@ -689,8 +716,9 @@ nfsd4_verify(struct svc_rqst *rqstp, str
if (!buf)
return nfserr_resource;

- status = nfsd4_encode_fattr(current_fh, current_fh->fh_export,
- current_fh->fh_dentry, buf,
+ status = nfsd4_encode_fattr(&cstate->current_fh,
+ cstate->current_fh.fh_export,
+ cstate->current_fh.fh_dentry, buf,
&count, verify->ve_bmval,
rqstp);

@@ -727,6 +755,26 @@ static inline void nfsd4_increment_op_st
nfsdstats.nfs4_opcount[opnum]++;
}

+static void cstate_free(struct nfsd4_compound_state *cstate)
+{
+ if (cstate == NULL)
+ return;
+ fh_put(&cstate->current_fh);
+ fh_put(&cstate->save_fh);
+ kfree(cstate);
+}
+
+static struct nfsd4_compound_state *cstate_alloc(void)
+{
+ struct nfsd4_compound_state *cstate;
+
+ cstate = kmalloc(sizeof(struct nfsd4_compound_state), GFP_KERNEL);
+ if (cstate == NULL)
+ return NULL;
+ fh_init(&cstate->current_fh, NFS4_FHSIZE);
+ fh_init(&cstate->save_fh, NFS4_FHSIZE);
+ return cstate;
+}

/*
* COMPOUND call.
@@ -737,21 +785,15 @@ nfsd4_proc_compound(struct svc_rqst *rqs
struct nfsd4_compoundres *resp)
{
struct nfsd4_op *op;
- struct svc_fh *current_fh = NULL;
- struct svc_fh *save_fh = NULL;
+ struct nfsd4_compound_state *cstate = NULL;
struct nfs4_stateowner *replay_owner = NULL;
int slack_bytes;
__be32 status;

status = nfserr_resource;
- current_fh = kmalloc(sizeof(*current_fh), GFP_KERNEL);
- if (current_fh == NULL)
- goto out;
- fh_init(current_fh, NFS4_FHSIZE);
- save_fh = kmalloc(sizeof(*save_fh), GFP_KERNEL);
- if (save_fh == NULL)
+ cstate = cstate_alloc();
+ if (cstate == NULL)
goto out;
- fh_init(save_fh, NFS4_FHSIZE);

resp->xbuf = &rqstp->rq_res;
resp->p = rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len;
@@ -802,7 +844,7 @@ nfsd4_proc_compound(struct svc_rqst *rqs
* SETCLIENTID_CONFIRM, PUTFH and PUTROOTFH
* require a valid current filehandle
*/
- if (!current_fh->fh_dentry) {
+ if (!cstate->current_fh.fh_dentry) {
if (!((op->opnum == OP_PUTFH) ||
(op->opnum == OP_PUTROOTFH) ||
(op->opnum == OP_SETCLIENTID) ||
@@ -817,7 +859,7 @@ nfsd4_proc_compound(struct svc_rqst *rqs
/* Check must be done at start of each operation, except
* for GETATTR and ops not listed as returning NFS4ERR_MOVED
*/
- else if (current_fh->fh_export->ex_fslocs.migrated &&
+ else if (cstate->current_fh.fh_export->ex_fslocs.migrated &&
!((op->opnum == OP_GETATTR) ||
(op->opnum == OP_PUTROOTFH) ||
(op->opnum == OP_PUTPUBFH) ||
@@ -829,90 +871,110 @@ nfsd4_proc_compound(struct svc_rqst *rqs
}
switch (op->opnum) {
case OP_ACCESS:
- op->status = nfsd4_access(rqstp, current_fh, &op->u.access);
+ op->status = nfsd4_access(rqstp, cstate,
+ &op->u.access);
break;
case OP_CLOSE:
- op->status = nfsd4_close(rqstp, current_fh, &op->u.close, &replay_owner);
+ op->status = nfsd4_close(rqstp, cstate,
+ &op->u.close, &replay_owner);
break;
case OP_COMMIT:
- op->status = nfsd4_commit(rqstp, current_fh, &op->u.commit);
+ op->status = nfsd4_commit(rqstp, cstate,
+ &op->u.commit);
break;
case OP_CREATE:
- op->status = nfsd4_create(rqstp, current_fh, &op->u.create);
+ op->status = nfsd4_create(rqstp, cstate,
+ &op->u.create);
break;
case OP_DELEGRETURN:
- op->status = nfsd4_delegreturn(rqstp, current_fh, &op->u.delegreturn);
+ op->status = nfsd4_delegreturn(rqstp, cstate,
+ &op->u.delegreturn);
break;
case OP_GETATTR:
- op->status = nfsd4_getattr(rqstp, current_fh, &op->u.getattr);
+ op->status = nfsd4_getattr(rqstp, cstate,
+ &op->u.getattr);
break;
case OP_GETFH:
- op->status = nfsd4_getfh(current_fh, &op->u.getfh);
+ op->status = nfsd4_getfh(cstate, &op->u.getfh);
break;
case OP_LINK:
- op->status = nfsd4_link(rqstp, current_fh, save_fh, &op->u.link);
+ op->status = nfsd4_link(rqstp, cstate, &op->u.link);
break;
case OP_LOCK:
- op->status = nfsd4_lock(rqstp, current_fh, &op->u.lock, &replay_owner);
+ op->status = nfsd4_lock(rqstp, cstate, &op->u.lock,
+ &replay_owner);
break;
case OP_LOCKT:
- op->status = nfsd4_lockt(rqstp, current_fh, &op->u.lockt);
+ op->status = nfsd4_lockt(rqstp, cstate, &op->u.lockt);
break;
case OP_LOCKU:
- op->status = nfsd4_locku(rqstp, current_fh, &op->u.locku, &replay_owner);
+ op->status = nfsd4_locku(rqstp, cstate, &op->u.locku,
+ &replay_owner);
break;
case OP_LOOKUP:
- op->status = nfsd4_lookup(rqstp, current_fh, &op->u.lookup);
+ op->status = nfsd4_lookup(rqstp, cstate,
+ &op->u.lookup);
break;
case OP_LOOKUPP:
- op->status = nfsd4_lookupp(rqstp, current_fh);
+ op->status = nfsd4_lookupp(rqstp, cstate);
break;
case OP_NVERIFY:
- op->status = nfsd4_verify(rqstp, current_fh, &op->u.nverify);
+ op->status = nfsd4_verify(rqstp, cstate,
+ &op->u.nverify);
if (op->status == nfserr_not_same)
op->status = nfs_ok;
break;
case OP_OPEN:
- op->status = nfsd4_open(rqstp, current_fh, &op->u.open, &replay_owner);
+ op->status = nfsd4_open(rqstp, cstate,
+ &op->u.open, &replay_owner);
break;
case OP_OPEN_CONFIRM:
- op->status = nfsd4_open_confirm(rqstp, current_fh, &op->u.open_confirm, &replay_owner);
+ op->status = nfsd4_open_confirm(rqstp, cstate,
+ &op->u.open_confirm,
+ &replay_owner);
break;
case OP_OPEN_DOWNGRADE:
- op->status = nfsd4_open_downgrade(rqstp, current_fh, &op->u.open_downgrade, &replay_owner);
+ op->status = nfsd4_open_downgrade(rqstp, cstate,
+ &op->u.open_downgrade,
+ &replay_owner);
break;
case OP_PUTFH:
- op->status = nfsd4_putfh(rqstp, current_fh, &op->u.putfh);
+ op->status = nfsd4_putfh(rqstp, cstate, &op->u.putfh);
break;
case OP_PUTROOTFH:
- op->status = nfsd4_putrootfh(rqstp, current_fh);
+ op->status = nfsd4_putrootfh(rqstp, cstate);
break;
case OP_READ:
- op->status = nfsd4_read(rqstp, current_fh, &op->u.read);
+ op->status = nfsd4_read(rqstp, cstate, &op->u.read);
break;
case OP_READDIR:
- op->status = nfsd4_readdir(rqstp, current_fh, &op->u.readdir);
+ op->status = nfsd4_readdir(rqstp, cstate,
+ &op->u.readdir);
break;
case OP_READLINK:
- op->status = nfsd4_readlink(rqstp, current_fh, &op->u.readlink);
+ op->status = nfsd4_readlink(rqstp, cstate,
+ &op->u.readlink);
break;
case OP_REMOVE:
- op->status = nfsd4_remove(rqstp, current_fh, &op->u.remove);
+ op->status = nfsd4_remove(rqstp, cstate,
+ &op->u.remove);
break;
case OP_RENAME:
- op->status = nfsd4_rename(rqstp, current_fh, save_fh, &op->u.rename);
+ op->status = nfsd4_rename(rqstp, cstate,
+ &op->u.rename);
break;
case OP_RENEW:
op->status = nfsd4_renew(&op->u.renew);
break;
case OP_RESTOREFH:
- op->status = nfsd4_restorefh(current_fh, save_fh);
+ op->status = nfsd4_restorefh(cstate);
break;
case OP_SAVEFH:
- op->status = nfsd4_savefh(current_fh, save_fh);
+ op->status = nfsd4_savefh(cstate);
break;
case OP_SETATTR:
- op->status = nfsd4_setattr(rqstp, current_fh, &op->u.setattr);
+ op->status = nfsd4_setattr(rqstp, cstate,
+ &op->u.setattr);
break;
case OP_SETCLIENTID:
op->status = nfsd4_setclientid(rqstp, &op->u.setclientid);
@@ -921,12 +983,13 @@ nfsd4_proc_compound(struct svc_rqst *rqs
op->status = nfsd4_setclientid_confirm(rqstp, &op->u.setclientid_confirm);
break;
case OP_VERIFY:
- op->status = nfsd4_verify(rqstp, current_fh, &op->u.verify);
+ op->status = nfsd4_verify(rqstp, cstate,
+ &op->u.verify);
if (op->status == nfserr_same)
op->status = nfs_ok;
break;
case OP_WRITE:
- op->status = nfsd4_write(rqstp, current_fh, &op->u.write);
+ op->status = nfsd4_write(rqstp, cstate, &op->u.write);
break;
case OP_RELEASE_LOCKOWNER:
op->status = nfsd4_release_lockowner(rqstp, &op->u.release_lockowner);
@@ -958,12 +1021,7 @@ encode_op:

out:
nfsd4_release_compoundargs(args);
- if (current_fh)
- fh_put(current_fh);
- kfree(current_fh);
- if (save_fh)
- fh_put(save_fh);
- kfree(save_fh);
+ cstate_free(cstate);
return status;
}


diff .prev/fs/nfsd/nfs4state.c ./fs/nfsd/nfs4state.c
--- .prev/fs/nfsd/nfs4state.c 2006-12-08 12:07:57.000000000 +1100
+++ ./fs/nfsd/nfs4state.c 2006-12-08 12:09:27.000000000 +1100
@@ -2242,24 +2242,26 @@ check_replay:
}

__be32
-nfsd4_open_confirm(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open_confirm *oc, struct nfs4_stateowner **replay_owner)
+nfsd4_open_confirm(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_open_confirm *oc,
+ struct nfs4_stateowner **replay_owner)
{
__be32 status;
struct nfs4_stateowner *sop;
struct nfs4_stateid *stp;

dprintk("NFSD: nfsd4_open_confirm on file %.*s\n",
- (int)current_fh->fh_dentry->d_name.len,
- current_fh->fh_dentry->d_name.name);
+ (int)cstate->current_fh.fh_dentry->d_name.len,
+ cstate->current_fh.fh_dentry->d_name.name);

- status = fh_verify(rqstp, current_fh, S_IFREG, 0);
+ status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0);
if (status)
return status;

nfs4_lock_state();

- if ((status = nfs4_preprocess_seqid_op(current_fh, oc->oc_seqid,
- &oc->oc_req_stateid,
+ if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ oc->oc_seqid, &oc->oc_req_stateid,
CHECK_FH | CONFIRM | OPEN_STATE,
&oc->oc_stateowner, &stp, NULL)))
goto out;
@@ -2311,22 +2313,26 @@ reset_union_bmap_deny(unsigned long deny
}

__be32
-nfsd4_open_downgrade(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_open_downgrade *od, struct nfs4_stateowner **replay_owner)
+nfsd4_open_downgrade(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *cstate,
+ struct nfsd4_open_downgrade *od,
+ struct nfs4_stateowner **replay_owner)
{
__be32 status;
struct nfs4_stateid *stp;
unsigned int share_access;

dprintk("NFSD: nfsd4_open_downgrade on file %.*s\n",
- (int)current_fh->fh_dentry->d_name.len,
- current_fh->fh_dentry->d_name.name);
+ (int)cstate->current_fh.fh_dentry->d_name.len,
+ cstate->current_fh.fh_dentry->d_name.name);

if (!access_valid(od->od_share_access)
|| !deny_valid(od->od_share_deny))
return nfserr_inval;

nfs4_lock_state();
- if ((status = nfs4_preprocess_seqid_op(current_fh, od->od_seqid,
+ if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ od->od_seqid,
&od->od_stateid,
CHECK_FH | OPEN_STATE,
&od->od_stateowner, &stp, NULL)))
@@ -2366,18 +2372,20 @@ out:
* nfs4_unlock_state() called after encode
*/
__be32
-nfsd4_close(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_close *close, struct nfs4_stateowner **replay_owner)
+nfsd4_close(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_close *close, struct nfs4_stateowner **replay_owner)
{
__be32 status;
struct nfs4_stateid *stp;

dprintk("NFSD: nfsd4_close on file %.*s\n",
- (int)current_fh->fh_dentry->d_name.len,
- current_fh->fh_dentry->d_name.name);
+ (int)cstate->current_fh.fh_dentry->d_name.len,
+ cstate->current_fh.fh_dentry->d_name.name);

nfs4_lock_state();
/* check close_lru for replay */
- if ((status = nfs4_preprocess_seqid_op(current_fh, close->cl_seqid,
+ if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
+ close->cl_seqid,
&close->cl_stateid,
CHECK_FH | OPEN_STATE | CLOSE_STATE,
&close->cl_stateowner, &stp, NULL)))
@@ -2405,15 +2413,17 @@ out:
}

__be32
-nfsd4_delegreturn(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_delegreturn *dr)
+nfsd4_delegreturn(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_delegreturn *dr)
{
__be32 status;

- if ((status = fh_verify(rqstp, current_fh, S_IFREG, 0)))
+ if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0)))
goto out;

nfs4_lock_state();
- status = nfs4_preprocess_stateid_op(current_fh, &dr->dr_stateid, DELEG_RET, NULL);
+ status = nfs4_preprocess_stateid_op(&cstate->current_fh,
+ &dr->dr_stateid, DELEG_RET, NULL);
nfs4_unlock_state();
out:
return status;
@@ -2636,7 +2646,8 @@ check_lock_length(u64 offset, u64 length
* LOCK operation
*/
__be32
-nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lock *lock, struct nfs4_stateowner **replay_owner)
+nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_lock *lock, struct nfs4_stateowner **replay_owner)
{
struct nfs4_stateowner *open_sop = NULL;
struct nfs4_stateowner *lock_sop = NULL;
@@ -2655,7 +2666,8 @@ nfsd4_lock(struct svc_rqst *rqstp, struc
if (check_lock_length(lock->lk_offset, lock->lk_length))
return nfserr_inval;

- if ((status = fh_verify(rqstp, current_fh, S_IFREG, MAY_LOCK))) {
+ if ((status = fh_verify(rqstp, &cstate->current_fh,
+ S_IFREG, MAY_LOCK))) {
dprintk("NFSD: nfsd4_lock: permission denied!\n");
return status;
}
@@ -2676,7 +2688,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struc
goto out;

/* validate and update open stateid and open seqid */
- status = nfs4_preprocess_seqid_op(current_fh,
+ status = nfs4_preprocess_seqid_op(&cstate->current_fh,
lock->lk_new_open_seqid,
&lock->lk_new_open_stateid,
CHECK_FH | OPEN_STATE,
@@ -2703,7 +2715,7 @@ nfsd4_lock(struct svc_rqst *rqstp, struc
goto out;
} else {
/* lock (lock owner + lock stateid) already exists */
- status = nfs4_preprocess_seqid_op(current_fh,
+ status = nfs4_preprocess_seqid_op(&cstate->current_fh,
lock->lk_old_lock_seqid,
&lock->lk_old_lock_stateid,
CHECK_FH | LOCK_STATE,
@@ -2795,7 +2807,8 @@ out:
* LOCKT operation
*/
__be32
-nfsd4_lockt(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_lockt *lockt)
+nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_lockt *lockt)
{
struct inode *inode;
struct file file;
@@ -2816,14 +2829,14 @@ nfsd4_lockt(struct svc_rqst *rqstp, stru
if (STALE_CLIENTID(&lockt->lt_clientid))
goto out;

- if ((status = fh_verify(rqstp, current_fh, S_IFREG, 0))) {
+ if ((status = fh_verify(rqstp, &cstate->current_fh, S_IFREG, 0))) {
dprintk("NFSD: nfsd4_lockt: fh_verify() failed!\n");
if (status == nfserr_symlink)
status = nfserr_inval;
goto out;
}

- inode = current_fh->fh_dentry->d_inode;
+ inode = cstate->current_fh.fh_dentry->d_inode;
locks_init_lock(&file_lock);
switch (lockt->lt_type) {
case NFS4_READ_LT:
@@ -2862,7 +2875,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, stru
* only the dentry:inode set.
*/
memset(&file, 0, sizeof (struct file));
- file.f_path.dentry = current_fh->fh_dentry;
+ file.f_path.dentry = cstate->current_fh.fh_dentry;

status = nfs_ok;
if (posix_test_lock(&file, &file_lock, &conflock)) {
@@ -2875,7 +2888,8 @@ out:
}

__be32
-nfsd4_locku(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_locku *locku, struct nfs4_stateowner **replay_owner)
+nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
+ struct nfsd4_locku *locku, struct nfs4_stateowner **replay_owner)
{
struct nfs4_stateid *stp;
struct file *filp = NULL;
@@ -2892,7 +2906,7 @@ nfsd4_locku(struct svc_rqst *rqstp, stru

nfs4_lock_state();

- if ((status = nfs4_preprocess_seqid_op(current_fh,
+ if ((status = nfs4_preprocess_seqid_op(&cstate->current_fh,
locku->lu_seqid,
&locku->lu_stateid,
CHECK_FH | LOCK_STATE,

diff .prev/include/linux/nfsd/xdr4.h ./include/linux/nfsd/xdr4.h
--- .prev/include/linux/nfsd/xdr4.h 2006-12-08 12:07:22.000000000 +1100
+++ ./include/linux/nfsd/xdr4.h 2006-12-08 12:09:27.000000000 +1100
@@ -44,6 +44,11 @@
#define NFSD4_MAX_TAGLEN 128
#define XDR_LEN(n) (((n) + 3) & ~3)

+struct nfsd4_compound_state {
+ struct svc_fh current_fh;
+ struct svc_fh save_fh;
+};
+
struct nfsd4_change_info {
u32 atomic;
u32 before_ctime_sec;
@@ -437,20 +442,23 @@ extern __be32 nfsd4_process_open1(struct
extern __be32 nfsd4_process_open2(struct svc_rqst *rqstp,
struct svc_fh *current_fh, struct nfsd4_open *open);
extern __be32 nfsd4_open_confirm(struct svc_rqst *rqstp,
- struct svc_fh *current_fh, struct nfsd4_open_confirm *oc,
+ struct nfsd4_compound_state *, struct nfsd4_open_confirm *oc,
struct nfs4_stateowner **);
-extern __be32 nfsd4_close(struct svc_rqst *rqstp, struct svc_fh *current_fh,
+extern __be32 nfsd4_close(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *,
struct nfsd4_close *close,
struct nfs4_stateowner **replay_owner);
extern __be32 nfsd4_open_downgrade(struct svc_rqst *rqstp,
- struct svc_fh *current_fh, struct nfsd4_open_downgrade *od,
+ struct nfsd4_compound_state *, struct nfsd4_open_downgrade *od,
struct nfs4_stateowner **replay_owner);
-extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct svc_fh *current_fh,
+extern __be32 nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *,
struct nfsd4_lock *lock,
struct nfs4_stateowner **replay_owner);
-extern __be32 nfsd4_lockt(struct svc_rqst *rqstp, struct svc_fh *current_fh,
+extern __be32 nfsd4_lockt(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *,
struct nfsd4_lockt *lockt);
-extern __be32 nfsd4_locku(struct svc_rqst *rqstp, struct svc_fh *current_fh,
+extern __be32 nfsd4_locku(struct svc_rqst *rqstp,
+ struct nfsd4_compound_state *,
struct nfsd4_locku *locku,
struct nfs4_stateowner **replay_owner);
extern __be32
@@ -458,7 +466,7 @@ nfsd4_release_lockowner(struct svc_rqst
struct nfsd4_release_lockowner *rlockowner);
extern void nfsd4_release_compoundargs(struct nfsd4_compoundargs *);
extern __be32 nfsd4_delegreturn(struct svc_rqst *rqstp,
- struct svc_fh *current_fh, struct nfsd4_delegreturn *dr);
+ struct nfsd4_compound_state *, struct nfsd4_delegreturn *dr);
#endif

/*
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/