locks.c File Reference

#include <linux/ceph/ceph_debug.h>
#include <linux/file.h>
#include <linux/namei.h>
#include "super.h"
#include "mds_client.h"
#include <linux/ceph/pagelist.h>

Go to the source code of this file.

Functions
int	ceph_lock (struct file *file, int cmd, struct file_lock *fl)
int	ceph_flock (struct file *file, int cmd, struct file_lock *fl)
void	ceph_count_locks (struct inode *inode, int *fcntl_count, int *flock_count)
int	ceph_encode_locks (struct inode *inode, struct ceph_pagelist *pagelist, int num_fcntl_locks, int num_flock_locks)
int	lock_to_ceph_filelock (struct file_lock *lock, struct ceph_filelock *cephlock)

Function Documentation

void ceph_count_locks	(	struct inode *	inode,
		int *	fcntl_count,
		int *	flock_count
	)

Must be called with BKL already held. Fills in the passed counter variables, so you can prepare pagelist metadata before calling ceph_encode_locks.

Definition at line 176 of file locks.c.

int ceph_encode_locks	(	struct inode *	inode,
		struct ceph_pagelist *	pagelist,
		int	num_fcntl_locks,
		int	num_flock_locks
	)

Encode the flock and fcntl locks for the given inode into the pagelist. Format is: #fcntl locks, sequential fcntl locks, flock locks, sequential flock locks. Must be called with lock_flocks() already held. If we encounter more of a specific lock type than expected, we return the value 1.

Definition at line 201 of file locks.c.

int ceph_flock	(	struct file *	file,
		int	cmd,
		struct file_lock *	fl
	)

Definition at line 130 of file locks.c.

int ceph_lock	(	struct file *	file,
		int	cmd,
		struct file_lock *	fl
	)

Attempt to set an fcntl lock. For now, this just goes away to the server. Later it may be more awesome.

Definition at line 83 of file locks.c.

int lock_to_ceph_filelock	(	struct file_lock *	lock,
		struct ceph_filelock *	cephlock
	)

Definition at line 258 of file locks.c.