Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_SUPPORT_KMEM_H__
#define __XFS_SUPPORT_KMEM_H__
 
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
 
/*
 * General memory allocation interfaces
 */
 
typedef unsigned __bitwise xfs_km_flags_t;
#define KM_NOFS		((__force xfs_km_flags_t)0x0004u)
#define KM_MAYFAIL	((__force xfs_km_flags_t)0x0008u)
#define KM_ZERO		((__force xfs_km_flags_t)0x0010u)
#define KM_NOLOCKDEP	((__force xfs_km_flags_t)0x0020u)
 
/*
 * We use a special process flag to avoid recursive callbacks into
 * the filesystem during transactions.  We will also issue our own
 * warnings, so we explicitly skip any generic ones (silly of us).
 */
static inline gfp_t
kmem_flags_convert(xfs_km_flags_t flags)
{
<------>gfp_t	lflags;
 
<------>BUG_ON(flags & ~(KM_NOFS | KM_MAYFAIL | KM_ZERO | KM_NOLOCKDEP));
 
<------>lflags = GFP_KERNEL | __GFP_NOWARN;
<------>if (flags & KM_NOFS)
<------><------>lflags &= ~__GFP_FS;
 
<------>/*
<------> * Default page/slab allocator behavior is to retry for ever
<------> * for small allocations. We can override this behavior by using
<------> * __GFP_RETRY_MAYFAIL which will tell the allocator to retry as long
<------> * as it is feasible but rather fail than retry forever for all
<------> * request sizes.
<------> */
<------>if (flags & KM_MAYFAIL)
<------><------>lflags |= __GFP_RETRY_MAYFAIL;
 
<------>if (flags & KM_ZERO)
<------><------>lflags |= __GFP_ZERO;
 
<------>if (flags & KM_NOLOCKDEP)
<------><------>lflags |= __GFP_NOLOCKDEP;
 
<------>return lflags;
}
 
extern void *kmem_alloc(size_t, xfs_km_flags_t);
extern void *kmem_alloc_io(size_t size, int align_mask, xfs_km_flags_t flags);
extern void *kmem_alloc_large(size_t size, xfs_km_flags_t);
static inline void  kmem_free(const void *ptr)
{
<------>kvfree(ptr);
}
 
 
static inline void *
kmem_zalloc(size_t size, xfs_km_flags_t flags)
{
<------>return kmem_alloc(size, flags | KM_ZERO);
}
 
/*
 * Zone interfaces
 */
 
#define kmem_zone	kmem_cache
#define kmem_zone_t	struct kmem_cache
 
static inline struct page *
kmem_to_page(void *addr)
{
<------>if (is_vmalloc_addr(addr))
<------><------>return vmalloc_to_page(addr);
<------>return virt_to_page(addr);
}
 
#endif /* __XFS_SUPPORT_KMEM_H__ */