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linux-next/fs/ntfs/malloc.h
Christoph Hellwig 88dca4ca5a mm: remove the pgprot argument to __vmalloc
The pgprot argument to __vmalloc is always PAGE_KERNEL now, so remove it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Michael Kelley <mikelley@microsoft.com> [hyperv]
Acked-by: Gao Xiang <xiang@kernel.org> [erofs]
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Wei Liu <wei.liu@kernel.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Stephen Hemminger <sthemmin@microsoft.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Paul Mackerras <paulus@ozlabs.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: http://lkml.kernel.org/r/20200414131348.444715-22-hch@lst.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-02 10:59:11 -07:00

78 lines
2.3 KiB
C

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* malloc.h - NTFS kernel memory handling. Part of the Linux-NTFS project.
*
* Copyright (c) 2001-2005 Anton Altaparmakov
*/
#ifndef _LINUX_NTFS_MALLOC_H
#define _LINUX_NTFS_MALLOC_H
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/highmem.h>
/**
* __ntfs_malloc - allocate memory in multiples of pages
* @size: number of bytes to allocate
* @gfp_mask: extra flags for the allocator
*
* Internal function. You probably want ntfs_malloc_nofs()...
*
* Allocates @size bytes of memory, rounded up to multiples of PAGE_SIZE and
* returns a pointer to the allocated memory.
*
* If there was insufficient memory to complete the request, return NULL.
* Depending on @gfp_mask the allocation may be guaranteed to succeed.
*/
static inline void *__ntfs_malloc(unsigned long size, gfp_t gfp_mask)
{
if (likely(size <= PAGE_SIZE)) {
BUG_ON(!size);
/* kmalloc() has per-CPU caches so is faster for now. */
return kmalloc(PAGE_SIZE, gfp_mask & ~__GFP_HIGHMEM);
/* return (void *)__get_free_page(gfp_mask); */
}
if (likely((size >> PAGE_SHIFT) < totalram_pages()))
return __vmalloc(size, gfp_mask);
return NULL;
}
/**
* ntfs_malloc_nofs - allocate memory in multiples of pages
* @size: number of bytes to allocate
*
* Allocates @size bytes of memory, rounded up to multiples of PAGE_SIZE and
* returns a pointer to the allocated memory.
*
* If there was insufficient memory to complete the request, return NULL.
*/
static inline void *ntfs_malloc_nofs(unsigned long size)
{
return __ntfs_malloc(size, GFP_NOFS | __GFP_HIGHMEM);
}
/**
* ntfs_malloc_nofs_nofail - allocate memory in multiples of pages
* @size: number of bytes to allocate
*
* Allocates @size bytes of memory, rounded up to multiples of PAGE_SIZE and
* returns a pointer to the allocated memory.
*
* This function guarantees that the allocation will succeed. It will sleep
* for as long as it takes to complete the allocation.
*
* If there was insufficient memory to complete the request, return NULL.
*/
static inline void *ntfs_malloc_nofs_nofail(unsigned long size)
{
return __ntfs_malloc(size, GFP_NOFS | __GFP_HIGHMEM | __GFP_NOFAIL);
}
static inline void ntfs_free(void *addr)
{
kvfree(addr);
}
#endif /* _LINUX_NTFS_MALLOC_H */