linux-kernel - Re: 2.6.23-rc6-mm1 panic (memory controller issue ?)

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Message-Id: <1190161903.31220.24.camel@dyn9047017100.beaverton.ibm.com>
Date:	Tue, 18 Sep 2007 17:31:43 -0700
From:	Badari Pulavarty <pbadari@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	balbir@...ibm.com, clameter@....com,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.23-rc6-mm1 panic (memory controller issue ?)

On Tue, 2007-09-18 at 15:21 -0700, Badari Pulavarty wrote:
> Hi Balbir,
> 
> I get following panic from SLUB, while doing simple fsx tests.
> I haven't used any container/memory controller stuff except 
> that I configured them in :(
> 
> Looks like slub doesn't like one of the flags passed in ?
> 
> Known issue ? Ideas ?
> 

I think, I found the issue. I am still running tests to
verify. Does this sound correct ?

Thanks,
Badari

Need to strip __GFP_HIGHMEM flag while passing to mem_container_cache_charge().

Signed-off-by: Badari Pulavarty <pbadari@...ibm.com>
 mm/filemap.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: linux-2.6.23-rc6/mm/filemap.c
===================================================================
--- linux-2.6.23-rc6.orig/mm/filemap.c	2007-09-18 12:43:54.000000000 -0700
+++ linux-2.6.23-rc6/mm/filemap.c	2007-09-18 19:14:44.000000000 -0700
@@ -441,7 +441,8 @@ int filemap_write_and_wait_range(struct 
 int add_to_page_cache(struct page *page, struct address_space *mapping,
 		pgoff_t offset, gfp_t gfp_mask)
 {
-	int error = mem_container_cache_charge(page, current->mm, gfp_mask);
+	int error = mem_container_cache_charge(page, current->mm,
+			gfp_mask & ~__GFP_HIGHMEM);
 	if (error)
 		goto out;
 


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