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Explain clearly why kmalloc() can't use __GFP_HIGHMEM.

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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>
This commit is contained in:
Robert P. J. Day 2007-10-19 23:11:38 +02:00 committed by Adrian Bunk
parent 3a4fa0a25d
commit 8518609dee
1 changed files with 2 additions and 1 deletions
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3
mm/nommu.c
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@ -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);
}