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authorIngo Molnar <mingo@elte.hu>2008-02-04 16:48:10 +0100
committerIngo Molnar <mingo@elte.hu>2008-02-04 16:48:10 +0100
commit87f7f8fe328388a1430a4c27cbe684f3925fd8a5 (patch)
tree175f262540488db3ee5e3fa027a0167e14b7f733 /arch/x86
parentbeaff6333b4a21e8f3b7f9a7c3c8f8716b2334bc (diff)
downloadop-kernel-dev-87f7f8fe328388a1430a4c27cbe684f3925fd8a5.zip
op-kernel-dev-87f7f8fe328388a1430a4c27cbe684f3925fd8a5.tar.gz
x86: cpa, clean up code flow
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/mm/pageattr.c20
1 files changed, 9 insertions, 11 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index fb2eedb..4f03350 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -423,8 +423,8 @@ out_unlock:
static int __change_page_attr(unsigned long address, struct cpa_data *cpa)
{
+ int level, do_split, err;
struct page *kpte_page;
- int level, do_split;
pte_t *kpte;
repeat:
@@ -476,26 +476,24 @@ repeat:
* and just change the pte:
*/
do_split = try_preserve_large_page(kpte, address, cpa);
- if (do_split < 0)
- return do_split;
-
/*
* When the range fits into the existing large page,
* return. cp->numpages and cpa->tlbflush have been updated in
* try_large_page:
*/
- if (do_split == 0)
- return 0;
+ if (do_split <= 0)
+ return do_split;
/*
* We have to split the large page:
*/
- do_split = split_large_page(kpte, address);
- if (do_split)
- return do_split;
- cpa->flushtlb = 1;
+ err = split_large_page(kpte, address);
+ if (!err) {
+ cpa->flushtlb = 1;
+ goto repeat;
+ }
- goto repeat;
+ return err;
}
/**
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