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-rw-r--r--mm/filemap.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index a293181..f807afd 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -885,6 +885,13 @@ repeat:
pages[ret] = page;
ret++;
}
+
+ /*
+ * If all entries were removed before we could secure them,
+ * try again, because callers stop trying once 0 is returned.
+ */
+ if (unlikely(!ret && nr_found))
+ goto restart;
rcu_read_unlock();
return ret;
}
@@ -1004,6 +1011,13 @@ repeat:
pages[ret] = page;
ret++;
}
+
+ /*
+ * If all entries were removed before we could secure them,
+ * try again, because callers stop trying once 0 is returned.
+ */
+ if (unlikely(!ret && nr_found))
+ goto restart;
rcu_read_unlock();
if (ret)
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