mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 05:11:48 +00:00
d6d7b702a3
Use ls_allocation for memory allocations, which a cluster fs sets to GFP_NOFS. Use GFP_NOFS for allocations when no lockspace struct is available. Taking dlm locks needs to avoid calling back into the cluster fs because write-out can require taking dlm locks. Cc: Christine Caulfield <ccaulfie@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>
93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
/******************************************************************************
|
|
*******************************************************************************
|
|
**
|
|
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
|
|
** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
|
|
**
|
|
** This copyrighted material is made available to anyone wishing to use,
|
|
** modify, copy, or redistribute it subject to the terms and conditions
|
|
** of the GNU General Public License v.2.
|
|
**
|
|
*******************************************************************************
|
|
******************************************************************************/
|
|
|
|
#include "dlm_internal.h"
|
|
#include "config.h"
|
|
#include "memory.h"
|
|
|
|
static struct kmem_cache *lkb_cache;
|
|
|
|
|
|
int __init dlm_memory_init(void)
|
|
{
|
|
int ret = 0;
|
|
|
|
lkb_cache = kmem_cache_create("dlm_lkb", sizeof(struct dlm_lkb),
|
|
__alignof__(struct dlm_lkb), 0, NULL);
|
|
if (!lkb_cache)
|
|
ret = -ENOMEM;
|
|
return ret;
|
|
}
|
|
|
|
void dlm_memory_exit(void)
|
|
{
|
|
if (lkb_cache)
|
|
kmem_cache_destroy(lkb_cache);
|
|
}
|
|
|
|
char *dlm_allocate_lvb(struct dlm_ls *ls)
|
|
{
|
|
char *p;
|
|
|
|
p = kzalloc(ls->ls_lvblen, ls->ls_allocation);
|
|
return p;
|
|
}
|
|
|
|
void dlm_free_lvb(char *p)
|
|
{
|
|
kfree(p);
|
|
}
|
|
|
|
/* FIXME: have some minimal space built-in to rsb for the name and
|
|
kmalloc a separate name if needed, like dentries are done */
|
|
|
|
struct dlm_rsb *dlm_allocate_rsb(struct dlm_ls *ls, int namelen)
|
|
{
|
|
struct dlm_rsb *r;
|
|
|
|
DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
|
|
|
|
r = kzalloc(sizeof(*r) + namelen, ls->ls_allocation);
|
|
return r;
|
|
}
|
|
|
|
void dlm_free_rsb(struct dlm_rsb *r)
|
|
{
|
|
if (r->res_lvbptr)
|
|
dlm_free_lvb(r->res_lvbptr);
|
|
kfree(r);
|
|
}
|
|
|
|
struct dlm_lkb *dlm_allocate_lkb(struct dlm_ls *ls)
|
|
{
|
|
struct dlm_lkb *lkb;
|
|
|
|
lkb = kmem_cache_zalloc(lkb_cache, ls->ls_allocation);
|
|
return lkb;
|
|
}
|
|
|
|
void dlm_free_lkb(struct dlm_lkb *lkb)
|
|
{
|
|
if (lkb->lkb_flags & DLM_IFL_USER) {
|
|
struct dlm_user_args *ua;
|
|
ua = lkb->lkb_ua;
|
|
if (ua) {
|
|
if (ua->lksb.sb_lvbptr)
|
|
kfree(ua->lksb.sb_lvbptr);
|
|
kfree(ua);
|
|
}
|
|
}
|
|
kmem_cache_free(lkb_cache, lkb);
|
|
}
|
|
|