c59d87c460
Use the move from Linux 2.6 to Linux 3.x as an excuse to kill the annoying subdirectories in the XFS source code. Besides the large amount of file rename the only changes are to the Makefile, a few files including headers with the subdirectory prefix, and the binary sysctl compat code that includes a header under fs/xfs/ from kernel/. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
132 lines
2.9 KiB
C
132 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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#include <linux/mm.h>
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#include <linux/highmem.h>
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#include <linux/slab.h>
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#include <linux/swap.h>
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#include <linux/blkdev.h>
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#include <linux/backing-dev.h>
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#include "time.h"
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#include "kmem.h"
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#include "xfs_message.h"
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/*
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* Greedy allocation. May fail and may return vmalloced memory.
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*
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* Must be freed using kmem_free_large.
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*/
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void *
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kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize)
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{
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void *ptr;
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size_t kmsize = maxsize;
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while (!(ptr = kmem_zalloc_large(kmsize))) {
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if ((kmsize >>= 1) <= minsize)
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kmsize = minsize;
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}
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if (ptr)
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*size = kmsize;
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return ptr;
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}
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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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ptr = kmalloc(size, 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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xfs_err(NULL,
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"possible memory allocation deadlock in %s (mode:0x%x)",
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__func__, lflags);
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congestion_wait(BLK_RW_ASYNC, 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(const void *ptr)
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{
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if (!is_vmalloc_addr(ptr)) {
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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(const 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);
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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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xfs_err(NULL,
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"possible memory allocation deadlock in %s (mode:0x%x)",
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__func__, lflags);
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congestion_wait(BLK_RW_ASYNC, 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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