X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Ffuse%2Ffuse_i.h;h=b24fc9b386f826b10220f39136f4eda8def271f4;hb=6ff958edbf39c014eb06b65ad25b736be08c4e63;hp=b98b20de740562bd32dc81fcf8af415779496f97;hpb=7e23772f414cdbfb2a08aed237d6e926bb1cb728;p=linux-2.6

diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index b98b20de74..b24fc9b386 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -20,7 +20,10 @@
 #define FUSE_MAX_PAGES_PER_REQ 32
 
 /** Maximum number of outstanding background requests */
-#define FUSE_MAX_BACKGROUND 10
+#define FUSE_MAX_BACKGROUND 12
+
+/** Congestion starts at 75% of maximum */
+#define FUSE_CONGESTION_THRESHOLD (FUSE_MAX_BACKGROUND * 75 / 100)
 
 /** It could be as large as PATH_MAX, but would that have any uses? */
 #define FUSE_NAME_MAX 1024
@@ -60,6 +63,13 @@ struct fuse_inode {
 
 	/** Time in jiffies until the file attributes are valid */
 	u64 i_time;
+
+	/** The sticky bit in inode->i_mode may have been removed, so
+	    preserve the original mode */
+	mode_t orig_i_mode;
+
+	/** Version of last attribute change */
+	u64 attr_version;
 };
 
 /** FUSE specific file data */
@@ -69,6 +79,9 @@ struct fuse_file {
 
 	/** File handle used by userspace */
 	u64 fh;
+
+	/** Refcount */
+	atomic_t count;
 };
 
 /** One input argument of a request */
@@ -213,7 +226,7 @@ struct fuse_req {
 	unsigned page_offset;
 
 	/** File used in the request (or NULL) */
-	struct file *file;
+	struct fuse_file *ff;
 
 	/** vfsmount used in release */
 	struct vfsmount *vfsmount;
@@ -286,6 +299,9 @@ struct fuse_conn {
 	/** waitq for blocked connection */
 	wait_queue_head_t blocked_waitq;
 
+	/** waitq for reserved requests */
+	wait_queue_head_t reserved_req_waitq;
+
 	/** The next unique request id */
 	u64 reqctr;
 
@@ -304,6 +320,9 @@ struct fuse_conn {
 	/** Do readpages asynchronously?  Only set in INIT */
 	unsigned async_read : 1;
 
+	/** Do not send separate SETATTR request before open(O_TRUNC)  */
+	unsigned atomic_o_trunc : 1;
+
 	/*
 	 * The following bitfields are only for optimization purposes
 	 * and hence races in setting them will not cause malfunction
@@ -374,6 +393,9 @@ struct fuse_conn {
 
 	/** Reserved request for the DESTROY message */
 	struct fuse_req *destroy_req;
+
+	/** Version counter for attribute changes */
+	u64 attr_version;
 };
 
 static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
@@ -403,7 +425,8 @@ extern const struct file_operations fuse_dev_operations;
  * Get a filled in inode
  */
 struct inode *fuse_iget(struct super_block *sb, unsigned long nodeid,
-			int generation, struct fuse_attr *attr);
+			int generation, struct fuse_attr *attr,
+			u64 attr_valid, u64 attr_version);
 
 /**
  * Send FORGET command
@@ -414,7 +437,7 @@ void fuse_send_forget(struct fuse_conn *fc, struct fuse_req *req,
 /**
  * Initialize READ or READDIR request
  */
-void fuse_read_fill(struct fuse_req *req, struct file *file,
+void fuse_read_fill(struct fuse_req *req, struct fuse_file *ff,
 		    struct inode *inode, loff_t pos, size_t count, int opcode);
 
 /**
@@ -427,9 +450,9 @@ void fuse_file_free(struct fuse_file *ff);
 void fuse_finish_open(struct inode *inode, struct file *file,
 		      struct fuse_file *ff, struct fuse_open_out *outarg);
 
-/** */
-struct fuse_req *fuse_release_fill(struct fuse_file *ff, u64 nodeid, int flags,
-				   int opcode);
+/** Fill in ff->reserved_req with a RELEASE request */
+void fuse_release_fill(struct fuse_file *ff, u64 nodeid, int flags, int opcode);
+
 /**
  * Send RELEASE or RELEASEDIR request
  */
@@ -464,7 +487,8 @@ void fuse_init_symlink(struct inode *inode);
 /**
  * Change attributes of an inode
  */
-void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr);
+void fuse_change_attributes(struct inode *inode, struct fuse_attr *attr,
+			    u64 attr_valid, u64 attr_version);
 
 /**
  * Initialize the client device
@@ -523,11 +547,6 @@ void request_send_background(struct fuse_conn *fc, struct fuse_req *req);
 /* Abort all requests */
 void fuse_abort_conn(struct fuse_conn *fc);
 
-/**
- * Get the attributes of a file
- */
-int fuse_do_getattr(struct inode *inode);
-
 /**
  * Invalidate inode attributes
  */
@@ -552,3 +571,13 @@ int fuse_ctl_add_conn(struct fuse_conn *fc);
  * Remove connection from control filesystem
  */
 void fuse_ctl_remove_conn(struct fuse_conn *fc);
+
+/**
+ * Is file type valid?
+ */
+int fuse_valid_type(int m);
+
+/**
+ * Is task allowed to perform filesystem operation?
+ */
+int fuse_allow_task(struct fuse_conn *fc, struct task_struct *task);