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[firefly-linux-kernel-4.4.55.git] / fs / bio-integrity.c

diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index 4d0ff5ee27b86bef6d377b9211694941939999a9..9c5e6b2cd11a84fa3f04611b35cebb6e2232b186 100644 (file)
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -761,6 +761,9 @@ int bioset_integrity_create(struct bio_set *bs, int pool_size)
 {
        unsigned int max_slab = vecs_to_idx(BIO_MAX_PAGES);
 
+       if (bs->bio_integrity_pool)
+               return 0;
+
        bs->bio_integrity_pool =
                mempool_create_slab_pool(pool_size, bip_slab[max_slab].slab);
 
@@ -782,7 +785,12 @@ void __init bio_integrity_init(void)
 {
        unsigned int i;
 
-       kintegrityd_wq = create_workqueue("kintegrityd");
+       /*
+        * kintegrityd won't block much but may burn a lot of CPU cycles.
+        * Make it highpri CPU intensive wq with max concurrency of 1.
+        */
+       kintegrityd_wq = alloc_workqueue("kintegrityd", WQ_MEM_RECLAIM |
+                                        WQ_HIGHPRI | WQ_CPU_INTENSIVE, 1);
        if (!kintegrityd_wq)
                panic("Failed to create kintegrityd\n");