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Merge branch 'server-cluster-locking-api' of git://linux-nfs.org/~bfields/linux

Browse source 
* 'server-cluster-locking-api' of git://linux-nfs.org/~bfields/linux:
  gfs2: nfs lock support for gfs2
  lockd: add code to handle deferred lock requests
  lockd: always preallocate block in nlmsvc_lock()
  lockd: handle test_lock deferrals
  lockd: pass cookie in nlmsvc_testlock
  lockd: handle fl_grant callbacks
  lockd: save lock state on deferral
  locks: add fl_grant callback for asynchronous lock return
  nfsd4: Convert NFSv4 to new lock interface
  locks: add lock cancel command
  locks: allow {vfs,posix}_lock_file to return conflicting lock
  locks: factor out generic/filesystem switch from setlock code
  locks: factor out generic/filesystem switch from test_lock
  locks: give posix_test_lock same interface as ->lock
  locks: make ->lock release private data before returning in GETLK case
  locks: create posix-to-flock helper functions
  locks: trivial removal of unnecessary parentheses
This commit is contained in:
Linus Torvalds 2007-05-07 12:34:24 -07:00
commit 2d56d3c43c
15 changed files with 546 additions and 205 deletions
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4
include/linux/fcntl.h
View file

@ -3,6 +3,10 @@
#include <asm/fcntl.h>
/* Cancel a blocking posix lock; internal use only until we expose an
* asynchronous lock api to userspace: */
#define F_CANCELLK (F_LINUX_SPECIFIC_BASE+5)
#define F_SETLEASE (F_LINUX_SPECIFIC_BASE+0)
#define F_GETLEASE (F_LINUX_SPECIFIC_BASE+1)

9
include/linux/fs.h
View file

@ -786,6 +786,7 @@ struct file_lock_operations {
struct lock_manager_operations {
int (*fl_compare_owner)(struct file_lock *, struct file_lock *);
void (*fl_notify)(struct file_lock *); /* unblock callback */
int (*fl_grant)(struct file_lock *, struct file_lock *, int);
void (*fl_copy_lock)(struct file_lock *, struct file_lock *);
void (*fl_release_private)(struct file_lock *);
void (*fl_break)(struct file_lock *);
@ -857,11 +858,13 @@ extern void locks_init_lock(struct file_lock *);
extern void locks_copy_lock(struct file_lock *, struct file_lock *);
extern void locks_remove_posix(struct file *, fl_owner_t);
extern void locks_remove_flock(struct file *);
extern int posix_test_lock(struct file *, struct file_lock *, struct file_lock *);
extern int posix_lock_file_conf(struct file *, struct file_lock *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *);
extern int posix_test_lock(struct file *, struct file_lock *);
extern int posix_lock_file(struct file *, struct file_lock *, struct file_lock *);
extern int posix_lock_file_wait(struct file *, struct file_lock *);
extern int posix_unblock_lock(struct file *, struct file_lock *);
extern int vfs_test_lock(struct file *, struct file_lock *);
extern int vfs_lock_file(struct file *, unsigned int, struct file_lock *, struct file_lock *);
extern int vfs_cancel_lock(struct file *filp, struct file_lock *fl);
extern int flock_lock_file_wait(struct file *filp, struct file_lock *fl);
extern int __break_lease(struct inode *inode, unsigned int flags);
extern void lease_get_mtime(struct inode *, struct timespec *time);

14
include/linux/lockd/lockd.h
View file

@ -119,6 +119,9 @@ struct nlm_file {
* couldn't be granted because of a conflicting lock).
*/
#define NLM_NEVER (~(unsigned long) 0)
/* timeout on non-blocking call: */
#define NLM_TIMEOUT (7 * HZ)
struct nlm_block {
struct kref b_count; /* Reference count */
struct list_head b_list; /* linked list of all blocks */
@ -130,6 +133,13 @@ struct nlm_block {
unsigned int b_id; /* block id */
unsigned char b_granted; /* VFS granted lock */
struct nlm_file * b_file; /* file in question */
struct cache_req * b_cache_req; /* deferred request handling */
struct file_lock * b_fl; /* set for GETLK */
struct cache_deferred_req * b_deferred_req;
unsigned int b_flags; /* block flags */
#define B_QUEUED 1 /* lock queued */
#define B_GOT_CALLBACK 2 /* got lock or conflicting lock */
#define B_TIMED_OUT 4 /* filesystem too slow to respond */
};
/*
@ -185,8 +195,8 @@ typedef int (*nlm_host_match_fn_t)(struct nlm_host *cur, struct nlm_host *ref)
__be32 nlmsvc_lock(struct svc_rqst *, struct nlm_file *,
struct nlm_lock *, int, struct nlm_cookie *);
__be32 nlmsvc_unlock(struct nlm_file *, struct nlm_lock *);
__be32 nlmsvc_testlock(struct nlm_file *, struct nlm_lock *,
struct nlm_lock *);
__be32 nlmsvc_testlock(struct svc_rqst *, struct nlm_file *,
struct nlm_lock *, struct nlm_lock *, struct nlm_cookie *);
__be32 nlmsvc_cancel_blocked(struct nlm_file *, struct nlm_lock *);
unsigned long nlmsvc_retry_blocked(void);
void nlmsvc_traverse_blocks(struct nlm_host *, struct nlm_file *,