27496a8c67
- ->releasepage() annotated (s/int/gfp_t), instances updated - missing gfp_t in fs/* added - fixed misannotation from the original sweep caught by bitwise checks: XFS used __nocast both for gfp_t and for flags used by XFS allocator. The latter left with unsigned int __nocast; we might want to add a different type for those but for now let's leave them alone. That, BTW, is a case when __nocast use had been actively confusing - it had been used in the same code for two different and similar types, with no way to catch misuses. Switch of gfp_t to bitwise had caught that immediately... One tricky bit is left alone to be dealt with later - mapping->flags is a mix of gfp_t and error indications. Left alone for now. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
136 lines
3.3 KiB
C
136 lines
3.3 KiB
C
/*
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* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 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, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* Further, this software is distributed without any warranty that it is
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* free of the rightful claim of any third person regarding infringement
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* or the like. Any license provided herein, whether implied or
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* otherwise, applies only to this software file. Patent licenses, if
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* any, provided herein do not apply to combinations of this program with
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* other software, or any other product whatsoever.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston MA 02111-1307, USA.
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*
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* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
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* Mountain View, CA 94043, or:
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*
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* http://www.sgi.com
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*
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* For further information regarding this notice, see:
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*
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* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
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*/
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/vmalloc.h>
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#include <linux/highmem.h>
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#include <linux/swap.h>
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#include <linux/blkdev.h>
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#include "time.h"
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#include "kmem.h"
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#define MAX_VMALLOCS 6
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#define MAX_SLAB_SIZE 0x20000
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void *
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kmem_alloc(size_t size, unsigned int __nocast flags)
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{
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int retries = 0;
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gfp_t lflags = kmem_flags_convert(flags);
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void *ptr;
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do {
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if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS)
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ptr = kmalloc(size, lflags);
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else
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ptr = __vmalloc(size, lflags, PAGE_KERNEL);
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if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
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return ptr;
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if (!(++retries % 100))
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printk(KERN_ERR "XFS: possible memory allocation "
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"deadlock in %s (mode:0x%x)\n",
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__FUNCTION__, lflags);
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blk_congestion_wait(WRITE, HZ/50);
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} while (1);
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}
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void *
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kmem_zalloc(size_t size, unsigned int __nocast flags)
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{
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void *ptr;
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ptr = kmem_alloc(size, flags);
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if (ptr)
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memset((char *)ptr, 0, (int)size);
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return ptr;
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}
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void
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kmem_free(void *ptr, size_t size)
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{
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if (((unsigned long)ptr < VMALLOC_START) ||
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((unsigned long)ptr >= VMALLOC_END)) {
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kfree(ptr);
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} else {
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vfree(ptr);
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}
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}
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void *
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kmem_realloc(void *ptr, size_t newsize, size_t oldsize,
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unsigned int __nocast flags)
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{
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void *new;
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new = kmem_alloc(newsize, flags);
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if (ptr) {
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if (new)
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memcpy(new, ptr,
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((oldsize < newsize) ? oldsize : newsize));
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kmem_free(ptr, oldsize);
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}
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return new;
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}
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void *
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kmem_zone_alloc(kmem_zone_t *zone, unsigned int __nocast flags)
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{
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int retries = 0;
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gfp_t lflags = kmem_flags_convert(flags);
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void *ptr;
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do {
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ptr = kmem_cache_alloc(zone, lflags);
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if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
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return ptr;
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if (!(++retries % 100))
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printk(KERN_ERR "XFS: possible memory allocation "
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"deadlock in %s (mode:0x%x)\n",
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__FUNCTION__, lflags);
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blk_congestion_wait(WRITE, HZ/50);
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} while (1);
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}
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void *
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kmem_zone_zalloc(kmem_zone_t *zone, unsigned int __nocast flags)
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{
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void *ptr;
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ptr = kmem_zone_alloc(zone, flags);
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if (ptr)
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memset((char *)ptr, 0, kmem_cache_size(zone));
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return ptr;
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}
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