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lockd: Clean up of the server-side GRANTED code 

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2006-03-20 13:44:39 -05:00
parent 6849c0cab6
commit 5e1abf8cb7
3 changed files with 53 additions and 48 deletions
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43
fs/lockd/clntproc.c
View File

@ -147,49 +147,6 @@ static void nlmclnt_release_lockargs(struct nlm_rqst *req)
fl->fl_ops->fl_release_private(fl);
}
/*
* Initialize arguments for GRANTED call. The nlm_rqst structure
* has been cleared already.
*/
int
nlmclnt_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock)
{
locks_copy_lock(&call->a_args.lock.fl, &lock->fl);
memcpy(&call->a_args.lock.fh, &lock->fh, sizeof(call->a_args.lock.fh));
call->a_args.lock.caller = system_utsname.nodename;
call->a_args.lock.oh.len = lock->oh.len;
/* set default data area */
call->a_args.lock.oh.data = call->a_owner;
call->a_args.lock.svid = lock->fl.fl_pid;
if (lock->oh.len > NLMCLNT_OHSIZE) {
void *data = kmalloc(lock->oh.len, GFP_KERNEL);
if (!data) {
nlmclnt_freegrantargs(call);
return 0;
}
call->a_args.lock.oh.data = (u8 *) data;
}
memcpy(call->a_args.lock.oh.data, lock->oh.data, lock->oh.len);
return 1;
}
void
nlmclnt_freegrantargs(struct nlm_rqst *call)
{
struct file_lock *fl = &call->a_args.lock.fl;
/*
* Check whether we allocated memory for the owner.
*/
if (call->a_args.lock.oh.data != (u8 *) call->a_owner) {
kfree(call->a_args.lock.oh.data);
}
if (fl->fl_ops && fl->fl_ops->fl_release_private)
fl->fl_ops->fl_release_private(fl);
}
/*
* This is the main entry point for the NLM client.
*/

56
fs/lockd/svclock.c
View File

@ -43,6 +43,8 @@ static void nlmsvc_release_block(struct nlm_block *block);
static void nlmsvc_insert_block(struct nlm_block *block, unsigned long);
static int nlmsvc_remove_block(struct nlm_block *block);
static int nlmsvc_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock);
static void nlmsvc_freegrantargs(struct nlm_rqst *call);
static const struct rpc_call_ops nlmsvc_grant_ops;
/*
@ -196,7 +198,7 @@ nlmsvc_create_block(struct svc_rqst *rqstp, struct nlm_file *file,
locks_init_lock(&block->b_call.a_res.lock.fl);
kref_init(&block->b_count);
if (!nlmclnt_setgrantargs(&block->b_call, lock))
if (!nlmsvc_setgrantargs(&block->b_call, lock))
goto failed_free;
/* Set notifier function for VFS, and init args */
@ -264,7 +266,7 @@ static void nlmsvc_free_block(struct kref *kref)
if (block->b_host)
nlm_release_host(block->b_host);
nlmclnt_freegrantargs(&block->b_call);
nlmsvc_freegrantargs(&block->b_call);
kfree(block);
}
@ -298,6 +300,49 @@ nlmsvc_traverse_blocks(struct nlm_host *host, struct nlm_file *file, int action)
return 0;
}
/*
* Initialize arguments for GRANTED call. The nlm_rqst structure
* has been cleared already.
*/
static int nlmsvc_setgrantargs(struct nlm_rqst *call, struct nlm_lock *lock)
{
locks_copy_lock(&call->a_args.lock.fl, &lock->fl);
memcpy(&call->a_args.lock.fh, &lock->fh, sizeof(call->a_args.lock.fh));
call->a_args.lock.caller = system_utsname.nodename;
call->a_args.lock.oh.len = lock->oh.len;
/* set default data area */
call->a_args.lock.oh.data = call->a_owner;
call->a_args.lock.svid = lock->fl.fl_pid;
if (lock->oh.len > NLMCLNT_OHSIZE) {
void *data = kmalloc(lock->oh.len, GFP_KERNEL);
if (!data) {
nlmsvc_freegrantargs(call);
return 0;
}
call->a_args.lock.oh.data = (u8 *) data;
}
memcpy(call->a_args.lock.oh.data, lock->oh.data, lock->oh.len);
return 1;
}
static void nlmsvc_freegrantargs(struct nlm_rqst *call)
{
struct file_lock *fl = &call->a_args.lock.fl;
/*
* Check whether we allocated memory for the owner.
*/
if (call->a_args.lock.oh.data != (u8 *) call->a_owner) {
kfree(call->a_args.lock.oh.data);
}
if (fl->fl_ops && fl->fl_ops->fl_release_private)
fl->fl_ops->fl_release_private(fl);
if (fl->fl_lmops && fl->fl_lmops->fl_release_private)
fl->fl_lmops->fl_release_private(fl);
}
/*
* Attempt to establish a lock, and if it can't be granted, block it
* if required.
@ -600,11 +645,16 @@ static void nlmsvc_grant_callback(struct rpc_task *task, void *data)
}
nlmsvc_insert_block(block, timeout);
svc_wake_up(block->b_daemon);
nlmsvc_release_block(block);
}
void nlmsvc_grant_release(void *data)
{
nlmsvc_release_block(data);
}
static const struct rpc_call_ops nlmsvc_grant_ops = {
.rpc_call_done = nlmsvc_grant_callback,
.rpc_release = nlmsvc_grant_release,
};
/*

2
include/linux/lockd/lockd.h
View File

@ -153,8 +153,6 @@ long nlmclnt_block(struct nlm_rqst *req, long timeout);
u32 nlmclnt_grant(const struct sockaddr_in *addr, const struct nlm_lock *);
void nlmclnt_recovery(struct nlm_host *, u32);
int nlmclnt_reclaim(struct nlm_host *, struct file_lock *);
int nlmclnt_setgrantargs(struct nlm_rqst *, struct nlm_lock *);
void nlmclnt_freegrantargs(struct nlm_rqst *);
/*
* Host cache