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authorRobert P. J. Day <rpjday@mindspring.com>2007-10-20 01:11:38 +0400
committerAdrian Bunk <bunk@kernel.org>2007-10-20 01:11:38 +0400
commit8518609deeacebafd71855f87cc411adb0c3be4e (patch)
tree899ae1c7eaa49aa4641351868d77fc6c60006ed7 /mm/nommu.c
parent3a4fa0a25da81600ea0bcd75692ae8ca6050d165 (diff)
downloadlinux-8518609deeacebafd71855f87cc411adb0c3be4e.tar.xz
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 <rpjday@mindspring.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
Diffstat (limited to 'mm/nommu.c')
-rw-r--r--mm/nommu.c3
1 files changed, 2 insertions, 1 deletions
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);
}