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lockd: prepare nlm_lockowner for use by the server

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The nlm_lockowner structure that the client uses to track locks is
generally useful to the server as well.  Very similar functions to handle
allocation and tracking of the nlm_lockowner will follow. Rename the client
functions for clarity.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Benjamin Coddington 2019-05-23 10:45:44 -04:00 committed by J. Bruce Fields
parent 22a46eb440
commit 9de3ec1d57
1 changed files with 11 additions and 10 deletions
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21
fs/lockd/clntproc.c
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@ -47,13 +47,14 @@ void nlmclnt_next_cookie(struct nlm_cookie *c)
c->len=4;
}
static struct nlm_lockowner *nlm_get_lockowner(struct nlm_lockowner *lockowner)
static struct nlm_lockowner *
nlmclnt_get_lockowner(struct nlm_lockowner *lockowner)
{
refcount_inc(&lockowner->count);
return lockowner;
}
static void nlm_put_lockowner(struct nlm_lockowner *lockowner)
void nlmclnt_put_lockowner(struct nlm_lockowner *lockowner)
{
if (!refcount_dec_and_lock(&lockowner->count, &lockowner->host->h_lock))
return;
@ -82,28 +83,28 @@ static inline uint32_t __nlm_alloc_pid(struct nlm_host *host)
return res;
}
static struct nlm_lockowner *__nlm_find_lockowner(struct nlm_host *host, fl_owner_t owner)
static struct nlm_lockowner *__nlmclnt_find_lockowner(struct nlm_host *host, fl_owner_t owner)
{
struct nlm_lockowner *lockowner;
list_for_each_entry(lockowner, &host->h_lockowners, list) {
if (lockowner->owner != owner)
continue;
return nlm_get_lockowner(lockowner);
return nlmclnt_get_lockowner(lockowner);
}
return NULL;
}
static struct nlm_lockowner *nlm_find_lockowner(struct nlm_host *host, fl_owner_t owner)
static struct nlm_lockowner *nlmclnt_find_lockowner(struct nlm_host *host, fl_owner_t owner)
{
struct nlm_lockowner *res, *new = NULL;
spin_lock(&host->h_lock);
res = __nlm_find_lockowner(host, owner);
res = __nlmclnt_find_lockowner(host, owner);
if (res == NULL) {
spin_unlock(&host->h_lock);
new = kmalloc(sizeof(*new), GFP_KERNEL);
spin_lock(&host->h_lock);
res = __nlm_find_lockowner(host, owner);
res = __nlmclnt_find_lockowner(host, owner);
if (res == NULL && new != NULL) {
res = new;
refcount_set(&new->count, 1);
@ -457,7 +458,7 @@ static void nlmclnt_locks_copy_lock(struct file_lock *new, struct file_lock *fl)
{
spin_lock(&fl->fl_u.nfs_fl.owner->host->h_lock);
new->fl_u.nfs_fl.state = fl->fl_u.nfs_fl.state;
new->fl_u.nfs_fl.owner = nlm_get_lockowner(fl->fl_u.nfs_fl.owner);
new->fl_u.nfs_fl.owner = nlmclnt_get_lockowner(fl->fl_u.nfs_fl.owner);
list_add_tail(&new->fl_u.nfs_fl.list, &fl->fl_u.nfs_fl.owner->host->h_granted);
spin_unlock(&fl->fl_u.nfs_fl.owner->host->h_lock);
}
@ -467,7 +468,7 @@ static void nlmclnt_locks_release_private(struct file_lock *fl)
spin_lock(&fl->fl_u.nfs_fl.owner->host->h_lock);
list_del(&fl->fl_u.nfs_fl.list);
spin_unlock(&fl->fl_u.nfs_fl.owner->host->h_lock);
nlm_put_lockowner(fl->fl_u.nfs_fl.owner);
nlmclnt_put_lockowner(fl->fl_u.nfs_fl.owner);
}
static const struct file_lock_operations nlmclnt_lock_ops = {
@ -478,7 +479,7 @@ static const struct file_lock_operations nlmclnt_lock_ops = {
static void nlmclnt_locks_init_private(struct file_lock *fl, struct nlm_host *host)
{
fl->fl_u.nfs_fl.state = 0;
fl->fl_u.nfs_fl.owner = nlm_find_lockowner(host, fl->fl_owner);
fl->fl_u.nfs_fl.owner = nlmclnt_find_lockowner(host, fl->fl_owner);
INIT_LIST_HEAD(&fl->fl_u.nfs_fl.list);
fl->fl_ops = &nlmclnt_lock_ops;
}