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[PATCH] fix impossible VmallocChunk
VmallocTotal: 34359738367 kB VmallocUsed: 266288 kB VmallocChunk: 18014366299193295 kB is unsettling - x86_64 and some other architectures keep a separate address range for modules in vmalloc's vmlist, which /proc/meminfo should pass over. Signed-off-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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1 changed files with 12 additions and 2 deletions
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@ -50,13 +50,23 @@ void get_vmalloc_info(struct vmalloc_info *vmi)
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read_lock(&vmlist_lock);
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for (vma = vmlist; vma; vma = vma->next) {
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unsigned long addr = (unsigned long) vma->addr;
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/*
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* Some archs keep another range for modules in vmlist
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*/
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if (addr < VMALLOC_START)
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continue;
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if (addr >= VMALLOC_END)
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break;
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vmi->used += vma->size;
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free_area_size = (unsigned long) vma->addr - prev_end;
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free_area_size = addr - prev_end;
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if (vmi->largest_chunk < free_area_size)
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vmi->largest_chunk = free_area_size;
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prev_end = vma->size + (unsigned long) vma->addr;
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prev_end = vma->size + addr;
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}
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if (VMALLOC_END - prev_end > vmi->largest_chunk)
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