20c2df83d2
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.
This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/*
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* Copyright (c) 2000-2005 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_SUPPORT_KMEM_H__
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#define __XFS_SUPPORT_KMEM_H__
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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/*
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* General memory allocation interfaces
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*/
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#define KM_SLEEP 0x0001u
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#define KM_NOSLEEP 0x0002u
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#define KM_NOFS 0x0004u
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#define KM_MAYFAIL 0x0008u
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#define KM_LARGE 0x0010u
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/*
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* We use a special process flag to avoid recursive callbacks into
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* the filesystem during transactions. We will also issue our own
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* warnings, so we explicitly skip any generic ones (silly of us).
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*/
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static inline gfp_t
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kmem_flags_convert(unsigned int __nocast flags)
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{
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gfp_t lflags;
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BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL|KM_LARGE));
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if (flags & KM_NOSLEEP) {
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lflags = GFP_ATOMIC | __GFP_NOWARN;
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} else {
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lflags = GFP_KERNEL | __GFP_NOWARN;
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if ((current->flags & PF_FSTRANS) || (flags & KM_NOFS))
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lflags &= ~__GFP_FS;
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}
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return lflags;
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}
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extern void *kmem_alloc(size_t, unsigned int __nocast);
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extern void *kmem_zalloc(size_t, unsigned int __nocast);
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extern void *kmem_zalloc_greedy(size_t *, size_t, size_t, unsigned int __nocast);
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extern void *kmem_realloc(void *, size_t, size_t, unsigned int __nocast);
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extern void kmem_free(void *, size_t);
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/*
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* Zone interfaces
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*/
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#define KM_ZONE_HWALIGN SLAB_HWCACHE_ALIGN
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#define KM_ZONE_RECLAIM SLAB_RECLAIM_ACCOUNT
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#define KM_ZONE_SPREAD SLAB_MEM_SPREAD
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#define kmem_zone kmem_cache
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#define kmem_zone_t struct kmem_cache
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static inline kmem_zone_t *
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kmem_zone_init(int size, char *zone_name)
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{
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return kmem_cache_create(zone_name, size, 0, 0, NULL);
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}
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static inline kmem_zone_t *
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kmem_zone_init_flags(int size, char *zone_name, unsigned long flags,
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void (*construct)(void *, kmem_zone_t *, unsigned long))
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{
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return kmem_cache_create(zone_name, size, 0, flags, construct);
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}
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static inline void
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kmem_zone_free(kmem_zone_t *zone, void *ptr)
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{
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kmem_cache_free(zone, ptr);
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}
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static inline void
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kmem_zone_destroy(kmem_zone_t *zone)
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{
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if (zone)
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kmem_cache_destroy(zone);
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}
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extern void *kmem_zone_alloc(kmem_zone_t *, unsigned int __nocast);
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extern void *kmem_zone_zalloc(kmem_zone_t *, unsigned int __nocast);
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static inline int
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kmem_shake_allow(gfp_t gfp_mask)
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{
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return (gfp_mask & __GFP_WAIT);
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}
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#endif /* __XFS_SUPPORT_KMEM_H__ */
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