linux-kernel - [PATCH v2 2/5] mm: ioremap: Setup phys_addr of struct vm

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Date:   Fri, 29 Apr 2022 18:32:22 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     <catalin.marinas@....com>, <will@...nel.org>,
        <akpm@...ux-foundation.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
CC:     <linux-mm@...ck.org>, <hch@...radead.org>, <arnd@...db.de>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Christoph Hellwig <hch@....de>
Subject: [PATCH v2 2/5] mm: ioremap: Setup phys_addr of struct vm_struct

Show physical address of each ioremap in /proc/vmallocinfo.

Acked-by: Andrew Morton <akpm@...ux-foundation.org>
Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 mm/ioremap.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/ioremap.c b/mm/ioremap.c
index 1f9597fbcc07..7cb9996b0c12 100644
--- a/mm/ioremap.c
+++ b/mm/ioremap.c
@@ -32,6 +32,7 @@ void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size, unsigned long pro
 	if (!area)
 		return NULL;
 	vaddr = (unsigned long)area->addr;
+	area->phys_addr = phys_addr;
 
 	if (ioremap_page_range(vaddr, vaddr + size, phys_addr, __pgprot(prot))) {
 		free_vm_area(area);
-- 
2.35.3