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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2014-02-12 09:13:37 +0530
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-02-17 11:19:36 +1100
commit9d85d5863fa4818eb7fa306563bf830c0210c3a6 (patch)
tree706890940e30e706bf4237bc02ef46600fa30462 /mm
parent88247e8d7ba6639f2c199e147ebbc91f7673150c (diff)
downloadlinux-9d85d5863fa4818eb7fa306563bf830c0210c3a6.tar.gz
mm: Dirty accountable change only apply to non prot numa case
So move it within the if loop Acked-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/mprotect.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 7332c178574..33eab902f10 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -58,6 +58,13 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
if (pte_numa(ptent))
ptent = pte_mknonnuma(ptent);
ptent = pte_modify(ptent, newprot);
+ /*
+ * Avoid taking write faults for pages we
+ * know to be dirty.
+ */
+ if (dirty_accountable && pte_dirty(ptent))
+ ptent = pte_mkwrite(ptent);
+ ptep_modify_prot_commit(mm, addr, pte, ptent);
updated = true;
} else {
struct page *page;
@@ -72,22 +79,8 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd,
}
}
}
-
- /*
- * Avoid taking write faults for pages we know to be
- * dirty.
- */
- if (dirty_accountable && pte_dirty(ptent)) {
- ptent = pte_mkwrite(ptent);
- updated = true;
- }
-
if (updated)
pages++;
-
- /* Only !prot_numa always clears the pte */
- if (!prot_numa)
- ptep_modify_prot_commit(mm, addr, pte, ptent);
} else if (IS_ENABLED(CONFIG_MIGRATION) && !pte_file(oldpte)) {
swp_entry_t entry = pte_to_swp_entry(oldpte);