percpu: end chunk area maps page aligned for the populated bitmap

[mirror_ubuntu-bionic-kernel.git] / mm / percpu-stats.c

diff --git a/mm/percpu-stats.c b/mm/percpu-stats.c
index 32f3550ea09940d7d6cd9a3e36e1c31507eddc6c..ffbdb96cdbeb4932bd4c9a3a717a70f3dd9eaa3a 100644 (file)
--- a/mm/percpu-stats.c
+++ b/mm/percpu-stats.c
@@ -51,7 +51,7 @@ static int find_max_map_used(void)
 static void chunk_map_stats(struct seq_file *m, struct pcpu_chunk *chunk,
                            int *buffer)
 {
-       int i, s_index, last_alloc, alloc_sign, as_len;
+       int i, s_index, e_index, last_alloc, alloc_sign, as_len;
        int *alloc_sizes, *p;
        /* statistics */
        int sum_frag = 0, max_frag = 0;
@@ -59,10 +59,11 @@ static void chunk_map_stats(struct seq_file *m, struct pcpu_chunk *chunk,
 
        alloc_sizes = buffer;
        s_index = (chunk->start_offset) ? 1 : 0;
+       e_index = chunk->map_used - ((chunk->end_offset) ? 1 : 0);
 
        /* find last allocation */
        last_alloc = -1;
-       for (i = chunk->map_used - 1; i >= s_index; i--) {
+       for (i = e_index - 1; i >= s_index; i--) {
                if (chunk->map[i] & 1) {
                        last_alloc = i;
                        break;