[PATCH] fix impossible VmallocChunk (64d13c00) · Commits · 戴 / test

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>

fs/proc/mmu.c

+12 −2

Original line number	Diff line number	Diff line
		@@ -50,13 +50,23 @@ void get_vmalloc_info(struct vmalloc_info *vmi)
		read_lock(&vmlist_lock);

		for (vma = vmlist; vma; vma = vma->next) {
		unsigned long addr = (unsigned long) vma->addr;

		/*
		* Some archs keep another range for modules in vmlist
		*/
		if (addr < VMALLOC_START)
		continue;
		if (addr >= VMALLOC_END)
		break;

		vmi->used += vma->size;

		free_area_size = (unsigned long) vma->addr - prev_end;
		free_area_size = addr - prev_end;
		if (vmi->largest_chunk < free_area_size)
		vmi->largest_chunk = free_area_size;

		prev_end = vma->size + (unsigned long) vma->addr;
		prev_end = vma->size + addr;
		}

		if (VMALLOC_END - prev_end > vmi->largest_chunk)

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