/*
- * Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/highmem.h>
#include <linux/swap.h>
-
+#include <linux/blkdev.h>
+#include <linux/backing-dev.h>
#include "time.h"
#include "kmem.h"
#define MAX_VMALLOCS 6
#define MAX_SLAB_SIZE 0x20000
-
void *
-kmem_alloc(size_t size, int flags)
+kmem_alloc(size_t size, unsigned int __nocast flags)
{
- int retries = 0, lflags = kmem_flags_convert(flags);
+ int retries = 0;
+ gfp_t lflags = kmem_flags_convert(flags);
void *ptr;
+#ifdef DEBUG
+ if (unlikely(!(flags & KM_LARGE) && (size > PAGE_SIZE))) {
+ printk(KERN_WARNING "Large %s attempt, size=%ld\n",
+ __FUNCTION__, (long)size);
+ dump_stack();
+ }
+#endif
+
do {
if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS)
ptr = kmalloc(size, lflags);
if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
return ptr;
if (!(++retries % 100))
- printk(KERN_ERR "possible deadlock in %s (mode:0x%x)\n",
+ printk(KERN_ERR "XFS: possible memory allocation "
+ "deadlock in %s (mode:0x%x)\n",
__FUNCTION__, lflags);
+ congestion_wait(WRITE, HZ/50);
} while (1);
}
void *
-kmem_zalloc(size_t size, int flags)
+kmem_zalloc(size_t size, unsigned int __nocast flags)
{
void *ptr;
return ptr;
}
+void *
+kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize,
+ unsigned int __nocast flags)
+{
+ void *ptr;
+ size_t kmsize = maxsize;
+ unsigned int kmflags = (flags & ~KM_SLEEP) | KM_NOSLEEP;
+
+ while (!(ptr = kmem_zalloc(kmsize, kmflags))) {
+ if ((kmsize <= minsize) && (flags & KM_NOSLEEP))
+ break;
+ if ((kmsize >>= 1) <= minsize) {
+ kmsize = minsize;
+ kmflags = flags;
+ }
+ }
+ if (ptr)
+ *size = kmsize;
+ return ptr;
+}
+
void
kmem_free(void *ptr, size_t size)
{
}
void *
-kmem_realloc(void *ptr, size_t newsize, size_t oldsize, int flags)
+kmem_realloc(void *ptr, size_t newsize, size_t oldsize,
+ unsigned int __nocast flags)
{
void *new;
}
void *
-kmem_zone_alloc(kmem_zone_t *zone, int flags)
+kmem_zone_alloc(kmem_zone_t *zone, unsigned int __nocast flags)
{
- int retries = 0, lflags = kmem_flags_convert(flags);
+ int retries = 0;
+ gfp_t lflags = kmem_flags_convert(flags);
void *ptr;
do {
if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
return ptr;
if (!(++retries % 100))
- printk(KERN_ERR "possible deadlock in %s (mode:0x%x)\n",
+ printk(KERN_ERR "XFS: possible memory allocation "
+ "deadlock in %s (mode:0x%x)\n",
__FUNCTION__, lflags);
+ congestion_wait(WRITE, HZ/50);
} while (1);
}
void *
-kmem_zone_zalloc(kmem_zone_t *zone, int flags)
+kmem_zone_zalloc(kmem_zone_t *zone, unsigned int __nocast flags)
{
void *ptr;