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-rw-r--r--kernel/fork.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index ab5211b9e622..0560781c6904 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -619,6 +619,14 @@ void mmput(struct mm_struct *mm)
module_put(mm->binfmt->module);
mmdrop(mm);
}
+
+ /*
+ * Final rss-counter synchronization. After this point there must be
+ * no pagefaults into this mm from the current context. Otherwise
+ * mm->rss_stat will be inconsistent.
+ */
+ if (mm)
+ sync_mm_rss(mm);
}
EXPORT_SYMBOL_GPL(mmput);