fix

4 files changed, 32 insertions, 25 deletions

diff --git a/kernel/dir.c b/kernel/dir.c
index 0912d50..078d517 100644
--- a/kernel/dir.c
+++ b/kernel/dir.c
@@ -48,7 +48,6 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
 		return 0;
 	else if (time_after(jiffies, entry->d_time)) {
 		int err;
-		int version;
 		struct fuse_entry_out outarg;
 		struct inode *inode = entry->d_inode;
 		struct fuse_inode *fi = get_fuse_inode(inode);
@@ -59,15 +58,19 @@ static int fuse_dentry_revalidate(struct dentry *entry, struct nameidata *nd)
 
 		fuse_lookup_init(req, entry->d_parent->d_inode, entry, &outarg);
 		request_send_nonint(fc, req);
-		version = req->out.h.unique;
 		err = req->out.h.error;
+		if (!err) {
+			if (outarg.nodeid != get_node_id(inode)) {
+				fuse_send_forget(fc, req, outarg.nodeid, 1);
+				return 0;
+			}
+			fi->nlookup ++;
+		}
 		fuse_put_request(fc, req);
-		if (err || outarg.nodeid != get_node_id(inode) ||
-		    (outarg.attr.mode ^ inode->i_mode) & S_IFMT)
+		if (err || (outarg.attr.mode ^ inode->i_mode) & S_IFMT)
 			return 0;
 
 		fuse_change_attributes(inode, &outarg.attr);
-		inode->i_version = version;
 		entry->d_time = time_to_jiffies(outarg.entry_valid,
 						outarg.entry_valid_nsec);
 		fi->i_time = time_to_jiffies(outarg.attr_valid,
@@ -94,7 +97,6 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
 			    struct inode **inodep)
 {
 	int err;
-	int version;
 	struct fuse_entry_out outarg;
 	struct inode *inode = NULL;
 	struct fuse_conn *fc = get_fuse_conn(dir);
@@ -109,13 +111,12 @@ static int fuse_lookup_iget(struct inode *dir, struct dentry *entry,
 
 	fuse_lookup_init(req, dir, entry, &outarg);
 	request_send(fc, req);
-	version = req->out.h.unique;
 	err = req->out.h.error;
 	if (!err) {
 		inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
-				  &outarg.attr, version);
+				  &outarg.attr);
 		if (!inode) {
-			fuse_send_forget(fc, req, outarg.nodeid, version);
+			fuse_send_forget(fc, req, outarg.nodeid, 1);
 			return -ENOMEM;
 		}
 	}
@@ -154,7 +155,6 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
 	struct fuse_entry_out outarg;
 	struct inode *inode;
 	struct fuse_inode *fi;
-	int version;
 	int err;
 
 	req->in.h.nodeid = get_node_id(dir);
@@ -163,16 +163,15 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_req *req,
 	req->out.args[0].size = sizeof(outarg);
 	req->out.args[0].value = &outarg;
 	request_send(fc, req);
-	version = req->out.h.unique;
 	err = req->out.h.error;
 	if (err) {
 		fuse_put_request(fc, req);
 		return err;
 	}
 	inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
-			  &outarg.attr, version);
+			  &outarg.attr);
 	if (!inode) {
-		fuse_send_forget(fc, req, outarg.nodeid, version);
+		fuse_send_forget(fc, req, outarg.nodeid, 1);
 		return -ENOMEM;
 	}
 	fuse_put_request(fc, req);
diff --git a/kernel/fuse_i.h b/kernel/fuse_i.h
index 25724b4..6ba851e 100644
--- a/kernel/fuse_i.h
+++ b/kernel/fuse_i.h
@@ -110,6 +110,9 @@ struct fuse_inode {
 	 * and kernel */
 	u64 nodeid;
 
+	/** Number of lookups on this inode */
+	u64 nlookup;
+
 	/** The request used for sending the FORGET message */
 	struct fuse_req *forget_req;
 
@@ -390,13 +393,13 @@ extern spinlock_t fuse_lock;
  * Get a filled in inode
  */
 struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid,
-			int generation, struct fuse_attr *attr, int version);
+			int generation, struct fuse_attr *attr);
 
 /**
  * Send FORGET command
  */
 void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
-		      unsigned long nodeid, int version);
+		      unsigned long nodeid, u64 nlookup);
 
 /**
  * Send READ or READDIR request
diff --git a/kernel/fuse_kernel.h b/kernel/fuse_kernel.h
index 3c06967..104d31a 100644
--- a/kernel/fuse_kernel.h
+++ b/kernel/fuse_kernel.h
@@ -11,7 +11,7 @@
 #include <asm/types.h>
 
 /** Version number of this interface */
-#define FUSE_KERNEL_VERSION 6
+#define FUSE_KERNEL_VERSION 7
 
 /** Minor version number of this interface */
 #define FUSE_KERNEL_MINOR_VERSION 1
@@ -113,7 +113,7 @@ struct fuse_entry_out {
 };
 
 struct fuse_forget_in {
-	__u64	version;
+	__u64	nlookup;
 };
 
 struct fuse_attr_out {
diff --git a/kernel/inode.c b/kernel/inode.c
index 6ef9491..4c36ad0 100644
--- a/kernel/inode.c
+++ b/kernel/inode.c
@@ -63,6 +63,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb)
 	fi = get_fuse_inode(inode);
 	fi->i_time = jiffies - 1;
 	fi->nodeid = 0;
+	fi->nlookup = 0;
 	fi->forget_req = fuse_request_alloc();
 	if (!fi->forget_req) {
 		kmem_cache_free(fuse_inode_cachep, inode);
@@ -86,10 +87,10 @@ static void fuse_read_inode(struct inode *inode)
 }
 
 void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
-		      unsigned long nodeid, int version)
+		      unsigned long nodeid, u64 nlookup)
 {
 	struct fuse_forget_in *inarg = &req->misc.forget_in;
-	inarg->version = version;
+	inarg->nlookup = nlookup;
 	req->in.h.opcode = FUSE_FORGET;
 	req->in.h.nodeid = nodeid;
 	req->in.numargs = 1;
@@ -103,7 +104,7 @@ static void fuse_clear_inode(struct inode *inode)
 	if (inode->i_sb->s_flags & MS_ACTIVE) {
 		struct fuse_conn *fc = get_fuse_conn(inode);
 		struct fuse_inode *fi = get_fuse_inode(inode);
-		fuse_send_forget(fc, fi->forget_req, fi->nodeid, inode->i_version);
+		fuse_send_forget(fc, fi->forget_req, fi->nodeid, fi->nlookup);
 		fi->forget_req = NULL;
 	}
 }
@@ -181,9 +182,10 @@ static int fuse_inode_set(struct inode *inode, void *_nodeidp)
 }
 
 struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid,
-			int generation, struct fuse_attr *attr, int version)
+			int generation, struct fuse_attr *attr)
 {
 	struct inode *inode;
+	struct fuse_inode *fi;
 	struct fuse_conn *fc = get_fuse_conn_super(sb);
 	int retried = 0;
 
@@ -206,8 +208,9 @@ struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid,
 		goto retry;
 	}
 
+	fi = get_fuse_inode(inode);
+	fi->nlookup ++;
 	fuse_change_attributes(inode, attr);
-	inode->i_version = version;
 	return inode;
 }
 #else
@@ -220,9 +223,10 @@ static int fuse_inode_eq(struct inode *inode, unsigned long ino, void *_nodeidp)
 }
 
 struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid,
-			int generation, struct fuse_attr *attr, int version)
+			int generation, struct fuse_attr *attr)
 {
 	struct inode *inode;
+	struct fuse_inode *fi;
 	int retried = 0;
 
  retry:
@@ -245,8 +249,9 @@ struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid,
 		goto retry;
 	}
 
+	fi = get_fuse_inode(inode);
+	fi->nlookup ++;
 	fuse_change_attributes(inode, attr);
-	inode->i_version = version;
 	return inode;
 }
 #endif
@@ -523,7 +528,7 @@ static struct inode *get_root_inode(struct super_block *sb, unsigned mode)
 
 	attr.mode = mode;
 	attr.ino = FUSE_ROOT_ID;
-	return fuse_iget(sb, 1, 0, &attr, 0);
+	return fuse_iget(sb, 1, 0, &attr);
 }
 
 #ifdef KERNEL_2_6