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cuse(3): Remove PAGE_SIZE from libcuse.
To allow for a dynamic page size on arm64 remove the static value from libcuse. Differential Revision: https://reviews.freebsd.org/D35585 MFC after: 1 week Sponsored by: NVIDIA Networking
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@ -1,6 +1,6 @@
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/* $FreeBSD$ */
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/*-
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* Copyright (c) 2010-2012 Hans Petter Selasky. All rights reserved.
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* Copyright (c) 2010-2022 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -142,7 +142,7 @@ cuse_vmoffset(void *_ptr)
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uint8_t *ptr_max;
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uint8_t *ptr = _ptr;
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unsigned long remainder;
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int n;
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unsigned long n;
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CUSE_LOCK();
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for (n = 0; n != CUSE_ALLOC_UNIT_MAX; n++) {
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@ -158,9 +158,10 @@ cuse_vmoffset(void *_ptr)
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remainder = (ptr - ptr_min);
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remainder -= remainder % PAGE_SIZE;
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remainder -= remainder %
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(unsigned long)getpagesize();
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return ((n * PAGE_SIZE * CUSE_ALLOC_PAGES_MAX) + remainder);
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return ((n * CUSE_ALLOC_BYTES_MAX) + remainder);
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}
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}
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CUSE_UNLOCK();
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@ -172,9 +173,10 @@ void *
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cuse_vmalloc(int size)
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{
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struct cuse_alloc_info info;
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unsigned long pgsize;
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unsigned long n;
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void *ptr;
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int error;
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int n;
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if (f_cuse < 0)
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return (NULL);
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@ -184,7 +186,8 @@ cuse_vmalloc(int size)
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if (size < 1)
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return (NULL);
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info.page_count = howmany(size, PAGE_SIZE);
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pgsize = getpagesize();
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info.page_count = howmany(size, pgsize);
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CUSE_LOCK();
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for (n = 0; n != CUSE_ALLOC_UNIT_MAX; n++) {
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@ -212,10 +215,9 @@ cuse_vmalloc(int size)
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else
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break;
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}
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ptr = mmap(NULL, info.page_count * PAGE_SIZE,
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ptr = mmap(NULL, info.page_count * pgsize,
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PROT_READ | PROT_WRITE,
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MAP_SHARED, f_cuse, CUSE_ALLOC_PAGES_MAX *
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PAGE_SIZE * n);
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MAP_SHARED, f_cuse, CUSE_ALLOC_BYTES_MAX * n);
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if (ptr == MAP_FAILED) {
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@ -1,6 +1,6 @@
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/* $FreeBSD$ */
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/*-
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* Copyright (c) 2010-2020 Hans Petter Selasky. All rights reserved.
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* Copyright (c) 2010-2022 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -64,6 +64,13 @@
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#include <fs/cuse/cuse_defs.h>
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#include <fs/cuse/cuse_ioctl.h>
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#define CUSE_ALLOC_PAGES_MAX \
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(CUSE_ALLOC_BYTES_MAX / PAGE_SIZE)
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#if (CUSE_ALLOC_PAGES_MAX == 0)
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#error "PAGE_SIZE is too big!"
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#endif
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static int
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cuse_modevent(module_t mod, int type, void *data)
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{
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@ -1,6 +1,6 @@
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/* $FreeBSD$ */
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/*-
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* Copyright (c) 2014 Hans Petter Selasky. All rights reserved.
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* Copyright (c) 2014-2022 Hans Petter Selasky. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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@ -30,13 +30,13 @@
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#include <sys/ioccom.h>
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#include <sys/types.h>
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#define CUSE_BUFFER_MAX PAGE_SIZE
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#define CUSE_BUFFER_MAX (1 << 12) /* bytes */
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#define CUSE_DEVICES_MAX 64 /* units */
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#define CUSE_BUF_MIN_PTR 0x10000UL
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#define CUSE_BUF_MAX_PTR 0x20000UL
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#define CUSE_ALLOC_UNIT_MAX 128 /* units */
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/* All memory allocations must be less than the following limit */
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#define CUSE_ALLOC_PAGES_MAX (((16UL * 1024UL * 1024UL) + PAGE_SIZE - 1) / PAGE_SIZE)
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#define CUSE_ALLOC_BYTES_MAX (1UL << 24) /* bytes */
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struct cuse_dev;
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