FS-Cache: Handle pages pending storage that get evicted under OOM conditions

[safe/jmp/linux-2.6] / fs / fscache / stats.c

diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c
index 045ba39..cda6999 100644 (file)
--- a/fs/fscache/stats.c
+++ b/fs/fscache/stats.c
@@ -63,6 +63,11 @@ atomic_t fscache_n_store_pages;
 atomic_t fscache_n_store_radix_deletes;
 atomic_t fscache_n_store_pages_over_limit;
 
+atomic_t fscache_n_store_vmscan_not_storing;
+atomic_t fscache_n_store_vmscan_gone;
+atomic_t fscache_n_store_vmscan_busy;
+atomic_t fscache_n_store_vmscan_cancelled;
+
 atomic_t fscache_n_marks;
 atomic_t fscache_n_uncaches;
 
@@ -211,6 +216,12 @@ static int fscache_stats_show(struct seq_file *m, void *v)
                   atomic_read(&fscache_n_store_radix_deletes),
                   atomic_read(&fscache_n_store_pages_over_limit));
 
+       seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u\n",
+                  atomic_read(&fscache_n_store_vmscan_not_storing),
+                  atomic_read(&fscache_n_store_vmscan_gone),
+                  atomic_read(&fscache_n_store_vmscan_busy),
+                  atomic_read(&fscache_n_store_vmscan_cancelled));
+
        seq_printf(m, "Ops    : pend=%u run=%u enq=%u can=%u rej=%u\n",
                   atomic_read(&fscache_n_op_pend),
                   atomic_read(&fscache_n_op_run),