nfsd: convert nfs4_file->fi_fds array to use nfsd_files

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4state.c

@@ -50,6 +50,7 @@
 
 #include "netns.h"
 #include "pnfs.h"
+#include "filecache.h"
 
 #define NFSDDBG_FACILITY                NFSDDBG_PROC
 
@@ -433,7 +434,7 @@ static struct file *
 __nfs4_get_fd(struct nfs4_file *f, int oflag)
 {
 	if (f->fi_fds[oflag])
-		return get_file(f->fi_fds[oflag]);
+		return get_file(f->fi_fds[oflag]->nf_file);
 	return NULL;
 }
 
@@ -590,17 +591,17 @@ static void __nfs4_file_put_access(struct nfs4_file *fp, int oflag)
 	might_lock(&fp->fi_lock);
 
 	if (atomic_dec_and_lock(&fp->fi_access[oflag], &fp->fi_lock)) {
-		struct file *f1 = NULL;
-		struct file *f2 = NULL;
+		struct nfsd_file *f1 = NULL;
+		struct nfsd_file *f2 = NULL;
 
 		swap(f1, fp->fi_fds[oflag]);
 		if (atomic_read(&fp->fi_access[1 - oflag]) == 0)
 			swap(f2, fp->fi_fds[O_RDWR]);
 		spin_unlock(&fp->fi_lock);
 		if (f1)
-			fput(f1);
+			nfsd_file_put(f1);
 		if (f2)
-			fput(f2);
+			nfsd_file_put(f2);
 	}
 }
 
@@ -2323,9 +2324,9 @@ static void states_stop(struct seq_file *s, void *v)
 	spin_unlock(&clp->cl_lock);
 }
 
-static void nfs4_show_superblock(struct seq_file *s, struct file *f)
+static void nfs4_show_superblock(struct seq_file *s, struct nfsd_file *f)
 {
-	struct inode *inode = file_inode(f);
+	struct inode *inode = f->nf_inode;
 
 	seq_printf(s, "superblock: \"%02x:%02x:%ld\"",
 					MAJOR(inode->i_sb->s_dev),
@@ -2343,7 +2344,7 @@ static int nfs4_show_open(struct seq_file *s, struct nfs4_stid *st)
 {
 	struct nfs4_ol_stateid *ols;
 	struct nfs4_file *nf;
-	struct file *file;
+	struct nfsd_file *file;
 	struct nfs4_stateowner *oo;
 	unsigned int access, deny;
 
@@ -2370,7 +2371,7 @@ static int nfs4_show_open(struct seq_file *s, struct nfs4_stid *st)
 	seq_printf(s, ", ");
 	nfs4_show_owner(s, oo);
 	seq_printf(s, " }\n");
-	fput(file);
+	nfsd_file_put(file);
 
 	return 0;
 }
@@ -2379,7 +2380,7 @@ static int nfs4_show_lock(struct seq_file *s, struct nfs4_stid *st)
 {
 	struct nfs4_ol_stateid *ols;
 	struct nfs4_file *nf;
-	struct file *file;
+	struct nfsd_file *file;
 	struct nfs4_stateowner *oo;
 
 	ols = openlockstateid(st);
@@ -2401,7 +2402,7 @@ static int nfs4_show_lock(struct seq_file *s, struct nfs4_stid *st)
 	seq_printf(s, ", ");
 	nfs4_show_owner(s, oo);
 	seq_printf(s, " }\n");
-	fput(file);
+	nfsd_file_put(file);
 
 	return 0;
 }
@@ -4651,7 +4652,7 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
 		struct svc_fh *cur_fh, struct nfs4_ol_stateid *stp,
 		struct nfsd4_open *open)
 {
-	struct file *filp = NULL;
+	struct nfsd_file *nf = NULL;
 	__be32 status;
 	int oflag = nfs4_access_to_omode(open->op_share_access);
 	int access = nfs4_access_to_access(open->op_share_access);
@@ -4687,18 +4688,18 @@ static __be32 nfs4_get_vfs_file(struct svc_rqst *rqstp, struct nfs4_file *fp,
 
 	if (!fp->fi_fds[oflag]) {
 		spin_unlock(&fp->fi_lock);
-		status = nfsd_open(rqstp, cur_fh, S_IFREG, access, &filp);
+		status = nfsd_file_acquire(rqstp, cur_fh, access, &nf);
 		if (status)
 			goto out_put_access;
 		spin_lock(&fp->fi_lock);
 		if (!fp->fi_fds[oflag]) {
-			fp->fi_fds[oflag] = filp;
-			filp = NULL;
+			fp->fi_fds[oflag] = nf;
+			nf = NULL;
 		}
 	}
 	spin_unlock(&fp->fi_lock);
-	if (filp)
-		fput(filp);
+	if (nf)
+		nfsd_file_put(nf);
 
 	status = nfsd4_truncate(rqstp, cur_fh, open);
 	if (status)

fs/nfsd/state.h

@@ -506,7 +506,7 @@ struct nfs4_file {
 	};
 	struct list_head	fi_clnt_odstate;
 	/* One each for O_RDONLY, O_WRONLY, O_RDWR: */
-	struct file *		fi_fds[3];
+	struct nfsd_file	*fi_fds[3];
 	/*
 	 * Each open or lock stateid contributes 0-4 to the counts
 	 * below depending on which bits are set in st_access_bitmap: