[linux-2.6-block.git] / fs / xfs / kmem.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#include "xfs.h"
#include <linux/backing-dev.h>
#include "xfs_message.h"
#include "xfs_trace.h"

void *
kmem_alloc(size_t size, xfs_km_flags_t flags)
{
	int	retries = 0;
	gfp_t	lflags = kmem_flags_convert(flags);
	void	*ptr;

	trace_kmem_alloc(size, flags, _RET_IP_);

	do {
		ptr = kmalloc(size, lflags);
		if (ptr || (flags & KM_MAYFAIL))
			return ptr;
		if (!(++retries % 100))
			xfs_err(NULL,
	"%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
				current->comm, current->pid,
				(unsigned int)size, __func__, lflags);
		congestion_wait(BLK_RW_ASYNC, HZ/50);
	} while (1);
}
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0
1da177e4	2	/*
7b718769 NS	3	* Copyright (c) 2000-2005 Silicon Graphics, Inc.
7b718769 NS	4	* All Rights Reserved.
1da177e4	5	*/
0ad95687	6	#include "xfs.h"
3fcfab16	7	#include <linux/backing-dev.h>
4f10700a	8	#include "xfs_message.h"
0ad95687	9	#include "xfs_trace.h"
1da177e4	10
1da177e4	11	void *
77ba7877	12	kmem_alloc(size_t size, xfs_km_flags_t flags)
1da177e4	13	{
27496a8c AV	14	int retries = 0;
	15	gfp_t lflags = kmem_flags_convert(flags);
	16	void *ptr;
1da177e4	17
0ad95687 DC	18	trace_kmem_alloc(size, flags, _RET_IP_);
0ad95687 DC	19
1da177e4	20	do {
bdfb0430	21	ptr = kmalloc(size, lflags);
707e0dda	22	if (ptr \|\| (flags & KM_MAYFAIL))
1da177e4 LT	23	return ptr;
1da177e4 LT	24	if (!(++retries % 100))
4f10700a	25	xfs_err(NULL,
847f9f68	26	"%s(%u) possible memory allocation deadlock size %u in %s (mode:0x%x)",
5bf97b1c	27	current->comm, current->pid,
847f9f68	28	(unsigned int)size, __func__, lflags);
8aa7e847	29	congestion_wait(BLK_RW_ASYNC, HZ/50);
1da177e4 LT	30	} while (1);
1da177e4 LT	31	}