lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

AFS: implement file locking

Browse Source 
Implement file locking for AFS.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells
2007-07-15 23:40:12 -07:00
committed by Linus Torvalds
parent b0fed3140f
commit e8d6c55412
14 changed files with 885 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
fs/afs/internal.h
View File

@ -351,10 +351,18 @@ struct afs_vnode {
#define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */
#define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */
#define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */
#define AFS_VNODE_LOCKING 6 /* set if waiting for lock on vnode */
#define AFS_VNODE_READLOCKED 7 /* set if vnode is read-locked on the server */
#define AFS_VNODE_WRITELOCKED 8 /* set if vnode is write-locked on the server */
#define AFS_VNODE_UNLOCKING 9 /* set if vnode is being unlocked on the server */
long acl_order; /* ACL check count (callback break count) */
struct list_head writebacks; /* alterations in pagecache that need writing */
struct list_head pending_locks; /* locks waiting to be granted */
struct list_head granted_locks; /* locks granted on this file */
struct delayed_work lock_work; /* work to be done in locking */
struct key *unlock_key; /* key to be used in unlocking */
/* outstanding callback notification on this file */
struct rb_node server_rb; /* link in server->fs_vnodes */
@ -473,6 +481,15 @@ extern const struct file_operations afs_file_operations;
extern int afs_open(struct inode *, struct file *);
extern int afs_release(struct inode *, struct file *);
/*
* flock.c
*/
extern void __exit afs_kill_lock_manager(void);
extern void afs_lock_work(struct work_struct *);
extern void afs_lock_may_be_available(struct afs_vnode *);
extern int afs_lock(struct file *, int, struct file_lock *);
extern int afs_flock(struct file *, int, struct file_lock *);
/*
* fsclient.c
*/
@ -513,6 +530,15 @@ extern int afs_fs_get_volume_status(struct afs_server *, struct key *,
struct afs_vnode *,
struct afs_volume_status *,
const struct afs_wait_mode *);
extern int afs_fs_set_lock(struct afs_server *, struct key *,
struct afs_vnode *, afs_lock_type_t,
const struct afs_wait_mode *);
extern int afs_fs_extend_lock(struct afs_server *, struct key *,
struct afs_vnode *,
const struct afs_wait_mode *);
extern int afs_fs_release_lock(struct afs_server *, struct key *,
struct afs_vnode *,
const struct afs_wait_mode *);
/*
* inode.c
@ -681,6 +707,10 @@ extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t,
extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *);
extern int afs_vnode_get_volume_status(struct afs_vnode *, struct key *,
struct afs_volume_status *);
extern int afs_vnode_set_lock(struct afs_vnode *, struct key *,
afs_lock_type_t);
extern int afs_vnode_extend_lock(struct afs_vnode *, struct key *);
extern int afs_vnode_release_lock(struct afs_vnode *, struct key *);
/*
* volume.c