linux-kernel - [PATCH 14/29] mm: rename vmap_page_range to map_kernel

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Date:   Tue, 14 Apr 2020 15:13:33 +0200
From:   Christoph Hellwig <hch@....de>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Wei Liu <wei.liu@...nel.org>, x86@...nel.org,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Laura Abbott <labbott@...hat.com>,
        Sumit Semwal <sumit.semwal@...aro.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Minchan Kim <minchan@...nel.org>,
        Nitin Gupta <ngupta@...are.org>
Cc:     Robin Murphy <robin.murphy@....com>,
        Christophe Leroy <christophe.leroy@....fr>,
        Peter Zijlstra <peterz@...radead.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-hyperv@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org,
        linux-arch@...r.kernel.org, linux-mm@...ck.org,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-s390@...r.kernel.org,
        bpf@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 14/29] mm: rename vmap_page_range to map_kernel_range

This matches the map_kernel_range_noflush API.  Also change to pass
a size instead of the end, similar to the noflush version.

Signed-off-by: Christoph Hellwig <hch@....de>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 mm/vmalloc.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 55df5dc6a9fc..a3d810def567 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -272,13 +272,13 @@ int map_kernel_range_noflush(unsigned long addr, unsigned long size,
 	return nr;
 }
 
-static int vmap_page_range(unsigned long start, unsigned long end,
+static int map_kernel_range(unsigned long start, unsigned long size,
 			   pgprot_t prot, struct page **pages)
 {
 	int ret;
 
-	ret = map_kernel_range_noflush(start, end - start, prot, pages);
-	flush_cache_vmap(start, end);
+	ret = map_kernel_range_noflush(start, size, prot, pages);
+	flush_cache_vmap(start, start + size);
 	return ret;
 }
 
@@ -1866,7 +1866,7 @@ void *vm_map_ram(struct page **pages, unsigned int count, int node, pgprot_t pro
 
 	kasan_unpoison_vmalloc(mem, size);
 
-	if (vmap_page_range(addr, addr + size, prot, pages) < 0) {
+	if (map_kernel_range(addr, size, prot, pages) < 0) {
 		vm_unmap_ram(mem, count);
 		return NULL;
 	}
@@ -2030,10 +2030,9 @@ void unmap_kernel_range(unsigned long addr, unsigned long size)
 int map_vm_area(struct vm_struct *area, pgprot_t prot, struct page **pages)
 {
 	unsigned long addr = (unsigned long)area->addr;
-	unsigned long end = addr + get_vm_area_size(area);
 	int err;
 
-	err = vmap_page_range(addr, end, prot, pages);
+	err = map_kernel_range(addr, get_vm_area_size(area), prot, pages);
 
 	return err > 0 ? 0 : err;
 }
-- 
2.25.1