From 8518609deeacebafd71855f87cc411adb0c3be4e Mon Sep 17 00:00:00 2001 From: "Robert P. J. Day" Date: Fri, 19 Oct 2007 23:11:38 +0200 Subject: [PATCH] Explain clearly why kmalloc() can't use __GFP_HIGHMEM. Fix the wishy-washy comment to clearly explain why kmalloc() can't use the __GFP_HIGHMEM zone modifier. Signed-off-by: Robert P. J. Day Signed-off-by: Adrian Bunk --- mm/nommu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/nommu.c b/mm/nommu.c index 42fb84e9e815..8f09333f78e1 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -175,7 +175,8 @@ EXPORT_SYMBOL(vfree); void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot) { /* - * kmalloc doesn't like __GFP_HIGHMEM for some reason + * You can't specify __GFP_HIGHMEM with kmalloc() since kmalloc() + * returns only a logical address. */ return kmalloc(size, (gfp_mask | __GFP_COMP) & ~__GFP_HIGHMEM); } -- 2.20.1