[PATCH] knfsd: nfsd4: pass saved and current fh together into nfsd4 operations

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@citi.umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 203 insertions, 145 deletions

diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 793a0b0a6cdd..1b6756aa013c 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -162,7 +162,8 @@ do_open_fhandle(struct svc_rqst *rqstp, struct svc_fh *current_fh, struct nfsd4_
 
 
 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, struct svc_fh *current_fh, struct nfsd4_open
 	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, struct svc_fh *current_fh, struct nfsd4_open
 			 * (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, struct svc_fh *current_fh, struct nfsd4_open
 			 * 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, struct svc_fh *current_fh, struct nfsd4_open
 	 * 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, struct svc_fh *save_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, struct svc_fh *current_fh, struct nfsd4_com
 	*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, struct svc_fh *current_fh, struct nfsd4_cre
 
 	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, struct svc_fh *current_fh, struct nfsd4_cre
 		 */
 		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, struct svc_fh *current_fh, struct nfsd4_cre
 		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, struct svc_fh *current_fh, struct nfsd4_cre
 		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, struct svc_fh *current_fh, struct nfsd4_cre
 	}
 
 	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, struct svc_fh *current_fh, struct nfsd4_cre
 }
 
 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, struct svc_fh *current_fh, struct nfsd4_ge
 	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, struct svc_fh *current_fh)
 	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, struct svc_fh *current_fh, struct nfsd4_read
 
 	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, struct svc_fh *current_fh, struct nfsd4_read
 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, struct svc_fh *current_fh, struct nfsd4_re
 		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, struct svc_fh *current_fh,
 	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, struct svc_fh *current_fh, struct nfsd4_se
 	}
 	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, struct svc_fh *current_fh, struct nfsd4_writ
 		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, struct svc_fh *current_fh, struct nfsd4_writ
 	*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, struct svc_fh *current_fh, struct nfsd4_writ
  * 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, struct svc_fh *current_fh, struct nfsd4_ver
 	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_stats(u32 opnum)
 		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 *rqstp,
 		    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 *rqstp,
 		* 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 *rqstp,
 		/* 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 *rqstp,
 		}
 		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 *rqstp,
 			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;
 }