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-rw-r--r--fs/dlm/device.c60
1 files changed, 31 insertions, 29 deletions
diff --git a/fs/dlm/device.c b/fs/dlm/device.c
index 47798fe..825bbc0 100644
--- a/fs/dlm/device.c
+++ b/fs/dlm/device.c
@@ -45,10 +45,6 @@ static const char *name_prefix="dlm";
static struct list_head user_ls_list;
static struct mutex user_ls_lock;
-/* Lock infos are stored in here indexed by lock ID */
-static DEFINE_IDR(lockinfo_idr);
-static rwlock_t lockinfo_lock;
-
/* Flags in li_flags */
#define LI_FLAG_COMPLETE 1
#define LI_FLAG_FIRSTLOCK 2
@@ -99,6 +95,10 @@ struct user_ls {
atomic_t ls_refcnt;
long ls_flags;
+ /* Lock infos are stored in here indexed by lock ID */
+ struct idr lockinfo_idr;
+ rwlock_t lockinfo_lock;
+
/* Passed into misc_register() */
struct miscdevice ls_miscinfo;
struct list_head ls_list;
@@ -240,13 +240,13 @@ static void put_file_info(struct file_info *f)
kfree(f);
}
-static void release_lockinfo(struct lock_info *li)
+static void release_lockinfo(struct user_ls *ls, struct lock_info *li)
{
put_file_info(li->li_file);
- write_lock(&lockinfo_lock);
- idr_remove(&lockinfo_idr, li->li_lksb.sb_lkid);
- write_unlock(&lockinfo_lock);
+ write_lock(&ls->lockinfo_lock);
+ idr_remove(&ls->lockinfo_idr, li->li_lksb.sb_lkid);
+ write_unlock(&ls->lockinfo_lock);
if (li->li_lksb.sb_lvbptr)
kfree(li->li_lksb.sb_lvbptr);
@@ -255,46 +255,46 @@ static void release_lockinfo(struct lock_info *li)
module_put(THIS_MODULE);
}
-static struct lock_info *get_lockinfo(uint32_t lockid)
+static struct lock_info *get_lockinfo(struct user_ls *ls, uint32_t lockid)
{
struct lock_info *li;
- read_lock(&lockinfo_lock);
- li = idr_find(&lockinfo_idr, lockid);
- read_unlock(&lockinfo_lock);
+ read_lock(&ls->lockinfo_lock);
+ li = idr_find(&ls->lockinfo_idr, lockid);
+ read_unlock(&ls->lockinfo_lock);
return li;
}
-static int add_lockinfo(struct lock_info *li)
+static int add_lockinfo(struct user_ls *ls, struct lock_info *li)
{
int n;
int r;
int ret = -EINVAL;
- write_lock(&lockinfo_lock);
+ write_lock(&ls->lockinfo_lock);
- if (idr_find(&lockinfo_idr, li->li_lksb.sb_lkid))
+ if (idr_find(&ls->lockinfo_idr, li->li_lksb.sb_lkid))
goto out_up;
ret = -ENOMEM;
- r = idr_pre_get(&lockinfo_idr, GFP_KERNEL);
+ r = idr_pre_get(&ls->lockinfo_idr, GFP_KERNEL);
if (!r)
goto out_up;
- r = idr_get_new_above(&lockinfo_idr, li, li->li_lksb.sb_lkid, &n);
+ r = idr_get_new_above(&ls->lockinfo_idr, li, li->li_lksb.sb_lkid, &n);
if (r)
goto out_up;
if (n != li->li_lksb.sb_lkid) {
- idr_remove(&lockinfo_idr, n);
+ idr_remove(&ls->lockinfo_idr, n);
goto out_up;
}
ret = 0;
out_up:
- write_unlock(&lockinfo_lock);
+ write_unlock(&ls->lockinfo_lock);
return ret;
}
@@ -358,6 +358,9 @@ static int register_lockspace(char *name, struct user_ls **ls, int flags)
return status;
}
+ idr_init(&newls->lockinfo_idr);
+ rwlock_init(&newls->lockinfo_lock);
+
snprintf((char*)newls->ls_miscinfo.name, namelen, "%s_%s",
name_prefix, name);
@@ -486,13 +489,13 @@ static void ast_routine(void *param)
list_del(&li->li_ownerqueue);
clear_bit(LI_FLAG_ONLIST, &li->li_flags);
spin_unlock(&li->li_file->fi_li_lock);
- release_lockinfo(li);
+ release_lockinfo(li->li_file->fi_ls, li);
return;
}
/* Free unlocks & queries */
if (li->li_lksb.sb_status == -DLM_EUNLOCK ||
li->li_cmd == DLM_USER_QUERY) {
- release_lockinfo(li);
+ release_lockinfo(li->li_file->fi_ls, li);
}
} else {
/* Synchronous request, just wake up the caller */
@@ -641,7 +644,7 @@ static int dlm_close(struct inode *inode, struct file *file)
old_li->li_lksb.sb_lkid, status);
/* But tidy our references in it */
- release_lockinfo(old_li);
+ release_lockinfo(old_li->li_file->fi_ls, old_li);
continue;
}
@@ -662,7 +665,7 @@ static int dlm_close(struct inode *inode, struct file *file)
/* Unlock suceeded, free the lock_info struct. */
if (status == 0)
- release_lockinfo(old_li);
+ release_lockinfo(old_li->li_file->fi_ls, old_li);
}
remove_wait_queue(&li.li_waitq, &wq);
@@ -920,7 +923,7 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
unless we are adopting an orphaned persistent lock */
if (kparams->flags & DLM_LKF_CONVERT) {
- li = get_lockinfo(kparams->lkid);
+ li = get_lockinfo(fi->fi_ls, kparams->lkid);
/* If this is a persistent lock we will have to create a
lockinfo again */
@@ -938,7 +941,7 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
fail we want rid of it */
init_completion(&li->li_firstcomp);
set_bit(LI_FLAG_FIRSTLOCK, &li->li_flags);
- add_lockinfo(li);
+ add_lockinfo(fi->fi_ls, li);
/* TODO: do a query to get the current state ?? */
}
@@ -1014,7 +1017,7 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
list_add(&li->li_ownerqueue, &fi->fi_li_list);
set_bit(LI_FLAG_ONLIST, &li->li_flags);
spin_unlock(&fi->fi_li_lock);
- if (add_lockinfo(li))
+ if (add_lockinfo(fi->fi_ls, li))
printk(KERN_WARNING "Add lockinfo failed\n");
complete(&li->li_firstcomp);
@@ -1025,7 +1028,7 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
out_err:
if (test_bit(LI_FLAG_FIRSTLOCK, &li->li_flags))
- release_lockinfo(li);
+ release_lockinfo(fi->fi_ls, li);
return status;
}
@@ -1037,7 +1040,7 @@ static int do_user_unlock(struct file_info *fi, uint8_t cmd,
int status;
int convert_cancel = 0;
- li = get_lockinfo(kparams->lkid);
+ li = get_lockinfo(fi->fi_ls, kparams->lkid);
if (!li) {
li = allocate_lockinfo(fi, cmd, kparams);
if (!li)
@@ -1209,7 +1212,6 @@ static int __init dlm_device_init(void)
INIT_LIST_HEAD(&user_ls_list);
mutex_init(&user_ls_lock);
- rwlock_init(&lockinfo_lock);
ctl_device.name = "dlm-control";
ctl_device.fops = &_dlm_ctl_fops;
generated by cgit v0.10.2 at 2024-08-30 09:42:13 (GMT)