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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778/* 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 */