NFS: Replace vfsmount and dentry in nfs_open_context with struct path

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/delegation.c

@@ -74,7 +74,7 @@ again:
 			continue;
 		get_nfs_open_context(ctx);
 		spin_unlock(&inode->i_lock);
-		err = nfs4_open_delegation_recall(ctx->dentry, state);
+		err = nfs4_open_delegation_recall(ctx->path.dentry, state);
 		if (err >= 0)
 			err = nfs_delegation_claim_locks(ctx, state);
 		put_nfs_open_context(ctx);

fs/nfs/direct.c

@@ -266,7 +266,7 @@ static const struct rpc_call_ops nfs_read_direct_ops = {
 static ssize_t nfs_direct_read_schedule(struct nfs_direct_req *dreq, unsigned long user_addr, size_t count, loff_t pos)
 {
 	struct nfs_open_context *ctx = dreq->ctx;
-	struct inode *inode = ctx->dentry->d_inode;
+	struct inode *inode = ctx->path.dentry->d_inode;
 	size_t rsize = NFS_SERVER(inode)->rsize;
 	unsigned int pgbase;
 	int result;
@@ -606,7 +606,7 @@ static const struct rpc_call_ops nfs_write_direct_ops = {
 static ssize_t nfs_direct_write_schedule(struct nfs_direct_req *dreq, unsigned long user_addr, size_t count, loff_t pos, int sync)
 {
 	struct nfs_open_context *ctx = dreq->ctx;
-	struct inode *inode = ctx->dentry->d_inode;
+	struct inode *inode = ctx->path.dentry->d_inode;
 	size_t wsize = NFS_SERVER(inode)->wsize;
 	unsigned int pgbase;
 	int result;

fs/nfs/inode.c

@@ -462,8 +462,8 @@ static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, str
 	ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
 	if (ctx != NULL) {
 		atomic_set(&ctx->count, 1);
-		ctx->dentry = dget(dentry);
-		ctx->vfsmnt = mntget(mnt);
+		ctx->path.dentry = dget(dentry);
+		ctx->path.mnt = mntget(mnt);
 		ctx->cred = get_rpccred(cred);
 		ctx->state = NULL;
 		ctx->lockowner = current->files;
@@ -484,7 +484,7 @@ void put_nfs_open_context(struct nfs_open_context *ctx)
 {
 	if (atomic_dec_and_test(&ctx->count)) {
 		if (!list_empty(&ctx->list)) {
-			struct inode *inode = ctx->dentry->d_inode;
+			struct inode *inode = ctx->path.dentry->d_inode;
 			spin_lock(&inode->i_lock);
 			list_del(&ctx->list);
 			spin_unlock(&inode->i_lock);
@@ -493,8 +493,8 @@ void put_nfs_open_context(struct nfs_open_context *ctx)
 			nfs4_close_state(ctx->state, ctx->mode);
 		if (ctx->cred != NULL)
 			put_rpccred(ctx->cred);
-		dput(ctx->dentry);
-		mntput(ctx->vfsmnt);
+		dput(ctx->path.dentry);
+		mntput(ctx->path.mnt);
 		kfree(ctx);
 	}
 }

fs/nfs/nfs4proc.c

@@ -512,7 +512,7 @@ static int nfs4_open_reclaim(struct nfs4_state_owner *sp, struct nfs4_state *sta
 	ctx = nfs4_state_find_open_context(state);
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);
-	ret = nfs4_do_open_reclaim(sp, state, ctx->dentry);
+	ret = nfs4_do_open_reclaim(sp, state, ctx->path.dentry);
 	put_nfs_open_context(ctx);
 	return ret;
 }
@@ -862,7 +862,7 @@ static int nfs4_open_expired(struct nfs4_state_owner *sp, struct nfs4_state *sta
 	ctx = nfs4_state_find_open_context(state);
 	if (IS_ERR(ctx))
 		return PTR_ERR(ctx);
-	ret = nfs4_do_open_expired(sp, state, ctx->dentry);
+	ret = nfs4_do_open_expired(sp, state, ctx->path.dentry);
 	put_nfs_open_context(ctx);
 	return ret;
 }
@@ -3285,7 +3285,7 @@ static void nfs4_lock_done(struct rpc_task *task, void *calldata)
 		memcpy(data->lsp->ls_stateid.data, data->res.stateid.data,
 					sizeof(data->lsp->ls_stateid.data));
 		data->lsp->ls_flags |= NFS_LOCK_INITIALIZED;
-		renew_lease(NFS_SERVER(data->ctx->dentry->d_inode), data->timestamp);
+		renew_lease(NFS_SERVER(data->ctx->path.dentry->d_inode), data->timestamp);
 	}
 	nfs_increment_lock_seqid(data->rpc_status, data->arg.lock_seqid);
 out:

fs/nfs/pagelist.c

@@ -114,7 +114,7 @@ void nfs_unlock_request(struct nfs_page *req)
  */
 int nfs_set_page_writeback_locked(struct nfs_page *req)
 {
-	struct nfs_inode *nfsi = NFS_I(req->wb_context->dentry->d_inode);
+	struct nfs_inode *nfsi = NFS_I(req->wb_context->path.dentry->d_inode);
 
 	if (!nfs_lock_request(req))
 		return 0;
@@ -127,7 +127,7 @@ int nfs_set_page_writeback_locked(struct nfs_page *req)
  */
 void nfs_clear_page_writeback(struct nfs_page *req)
 {
-	struct nfs_inode *nfsi = NFS_I(req->wb_context->dentry->d_inode);
+	struct nfs_inode *nfsi = NFS_I(req->wb_context->path.dentry->d_inode);
 
 	if (req->wb_page != NULL) {
 		spin_lock(&nfsi->req_lock);
@@ -193,7 +193,7 @@ static int nfs_wait_bit_interruptible(void *word)
 int
 nfs_wait_on_request(struct nfs_page *req)
 {
-        struct rpc_clnt	*clnt = NFS_CLIENT(req->wb_context->dentry->d_inode);
+	struct rpc_clnt *clnt = NFS_CLIENT(req->wb_context->path.dentry->d_inode);
 	sigset_t oldmask;
 	int ret = 0;
 

fs/nfs/read.c

@@ -145,8 +145,8 @@ static void nfs_readpage_release(struct nfs_page *req)
 	unlock_page(req->wb_page);
 
 	dprintk("NFS: read done (%s/%Ld %d@%Ld)\n",
-			req->wb_context->dentry->d_inode->i_sb->s_id,
-			(long long)NFS_FILEID(req->wb_context->dentry->d_inode),
+			req->wb_context->path.dentry->d_inode->i_sb->s_id,
+			(long long)NFS_FILEID(req->wb_context->path.dentry->d_inode),
 			req->wb_bytes,
 			(long long)req_offset(req));
 	nfs_clear_request(req);
@@ -164,7 +164,7 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
 	int flags;
 
 	data->req	  = req;
-	data->inode	  = inode = req->wb_context->dentry->d_inode;
+	data->inode	  = inode = req->wb_context->path.dentry->d_inode;
 	data->cred	  = req->wb_context->cred;
 
 	data->args.fh     = NFS_FH(inode);

fs/nfs/write.c

@@ -407,7 +407,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
  */
 static void nfs_inode_remove_request(struct nfs_page *req)
 {
-	struct inode *inode = req->wb_context->dentry->d_inode;
+	struct inode *inode = req->wb_context->path.dentry->d_inode;
 	struct nfs_inode *nfsi = NFS_I(inode);
 
 	BUG_ON (!NFS_WBACK_BUSY(req));
@@ -455,7 +455,7 @@ nfs_dirty_request(struct nfs_page *req)
 static void
 nfs_mark_request_commit(struct nfs_page *req)
 {
-	struct inode *inode = req->wb_context->dentry->d_inode;
+	struct inode *inode = req->wb_context->path.dentry->d_inode;
 	struct nfs_inode *nfsi = NFS_I(inode);
 
 	spin_lock(&nfsi->req_lock);
@@ -789,7 +789,7 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
 	 * NB: take care not to mess about with data->commit et al. */
 
 	data->req = req;
-	data->inode = inode = req->wb_context->dentry->d_inode;
+	data->inode = inode = req->wb_context->path.dentry->d_inode;
 	data->cred = req->wb_context->cred;
 
 	data->args.fh     = NFS_FH(inode);
@@ -957,8 +957,8 @@ static void nfs_writeback_done_partial(struct rpc_task *task, void *calldata)
 	struct page		*page = req->wb_page;
 
 	dprintk("NFS: write (%s/%Ld %d@%Ld)",
-		req->wb_context->dentry->d_inode->i_sb->s_id,
-		(long long)NFS_FILEID(req->wb_context->dentry->d_inode),
+		req->wb_context->path.dentry->d_inode->i_sb->s_id,
+		(long long)NFS_FILEID(req->wb_context->path.dentry->d_inode),
 		req->wb_bytes,
 		(long long)req_offset(req));
 
@@ -1023,8 +1023,8 @@ static void nfs_writeback_done_full(struct rpc_task *task, void *calldata)
 		page = req->wb_page;
 
 		dprintk("NFS: write (%s/%Ld %d@%Ld)",
-			req->wb_context->dentry->d_inode->i_sb->s_id,
-			(long long)NFS_FILEID(req->wb_context->dentry->d_inode),
+			req->wb_context->path.dentry->d_inode->i_sb->s_id,
+			(long long)NFS_FILEID(req->wb_context->path.dentry->d_inode),
 			req->wb_bytes,
 			(long long)req_offset(req));
 
@@ -1162,7 +1162,7 @@ static void nfs_commit_rpcsetup(struct list_head *head,
 
 	list_splice_init(head, &data->pages);
 	first = nfs_list_entry(data->pages.next);
-	inode = first->wb_context->dentry->d_inode;
+	inode = first->wb_context->path.dentry->d_inode;
 
 	data->inode	  = inode;
 	data->cred	  = first->wb_context->cred;
@@ -1239,8 +1239,8 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
 		dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
 
 		dprintk("NFS: commit (%s/%Ld %d@%Ld)",
-			req->wb_context->dentry->d_inode->i_sb->s_id,
-			(long long)NFS_FILEID(req->wb_context->dentry->d_inode),
+			req->wb_context->path.dentry->d_inode->i_sb->s_id,
+			(long long)NFS_FILEID(req->wb_context->path.dentry->d_inode),
 			req->wb_bytes,
 			(long long)req_offset(req));
 		if (task->tk_status < 0) {

include/linux/nfs_fs.h

@@ -31,6 +31,7 @@
 
 #include <linux/in.h>
 #include <linux/mm.h>
+#include <linux/namei.h>
 #include <linux/pagemap.h>
 #include <linux/rbtree.h>
 #include <linux/rwsem.h>
@@ -70,8 +71,7 @@ struct nfs_access_entry {
 struct nfs4_state;
 struct nfs_open_context {
 	atomic_t count;
-	struct vfsmount *vfsmnt;
-	struct dentry *dentry;
+	struct path path;
 	struct rpc_cred *cred;
 	struct nfs4_state *state;
 	fl_owner_t lockowner;