Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) *******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) **  Copyright (C) 2004-2007 Red Hat, Inc.  All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) **
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) *******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "dlm_internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "config.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "memory.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static struct kmem_cache *lkb_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) static struct kmem_cache *rsb_cache;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) int __init dlm_memory_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 				__alignof__(struct dlm_lkb), 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	if (!lkb_cache)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 				__alignof__(struct dlm_rsb), 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	if (!rsb_cache) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 		kmem_cache_destroy(lkb_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) void dlm_memory_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	kmem_cache_destroy(lkb_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	kmem_cache_destroy(rsb_cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) char *dlm_allocate_lvb(struct dlm_ls *ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	p = kzalloc(ls->ls_lvblen, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	return p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) void dlm_free_lvb(char *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	kfree(p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	struct dlm_rsb *r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	r = kmem_cache_zalloc(rsb_cache, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	return r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) void dlm_free_rsb(struct dlm_rsb *r)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	if (r->res_lvbptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 		dlm_free_lvb(r->res_lvbptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	kmem_cache_free(rsb_cache, r);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	struct dlm_lkb *lkb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 	lkb = kmem_cache_zalloc(lkb_cache, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	return lkb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) void dlm_free_lkb(struct dlm_lkb *lkb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	if (lkb->lkb_flags & DLM_IFL_USER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 		struct dlm_user_args *ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 		ua = lkb->lkb_ua;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 		if (ua) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 			kfree(ua->lksb.sb_lvbptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 			kfree(ua);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) 	kmem_cache_free(lkb_cache, lkb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)