xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[DLM] dlm: user locks

Browse Source 
This changes the way the dlm handles user locks.  The core dlm is now
aware of user locks so they can be dealt with more efficiently.  There is
no more dlm_device module which previously managed its own duplicate copy
of every user lock.

Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
David Teigland
2006-07-12 16:44:04 -05:00
committed by Steven Whitehouse
parent 2eb168ca94
commit 597d0cae0f
13 changed files with 1192 additions and 1260 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
fs/dlm/lockspace.c
View File

@@ -270,12 +270,36 @@ struct dlm_ls *dlm_find_lockspace_global(uint32_t id)
return ls;
}
struct dlm_ls *dlm_find_lockspace_local(void *id)
struct dlm_ls *dlm_find_lockspace_local(dlm_lockspace_t *lockspace)
{
struct dlm_ls *ls = id;
struct dlm_ls *ls;
spin_lock(&lslist_lock);
ls->ls_count++;
list_for_each_entry(ls, &lslist, ls_list) {
if (ls->ls_local_handle == lockspace) {
ls->ls_count++;
goto out;
}
}
ls = NULL;
out:
spin_unlock(&lslist_lock);
return ls;
}
struct dlm_ls *dlm_find_lockspace_device(int minor)
{
struct dlm_ls *ls;
spin_lock(&lslist_lock);
list_for_each_entry(ls, &lslist, ls_list) {
if (ls->ls_device.minor == minor) {
ls->ls_count++;
goto out;
}
}
ls = NULL;
out:
spin_unlock(&lslist_lock);
return ls;
}
@@ -436,6 +460,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
init_rwsem(&ls->ls_in_recovery);
INIT_LIST_HEAD(&ls->ls_requestqueue);
mutex_init(&ls->ls_requestqueue_mutex);
mutex_init(&ls->ls_clear_proc_locks);
ls->ls_recover_buf = kmalloc(dlm_config.buffer_size, GFP_KERNEL);
if (!ls->ls_recover_buf)
@@ -444,6 +469,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
INIT_LIST_HEAD(&ls->ls_recover_list);
spin_lock_init(&ls->ls_recover_list_lock);
ls->ls_recover_list_count = 0;
ls->ls_local_handle = ls;
init_waitqueue_head(&ls->ls_wait_general);
INIT_LIST_HEAD(&ls->ls_root_list);
init_rwsem(&ls->ls_root_sem);