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-rw-r--r--fs/crypto/crypto.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/crypto/crypto.c b/fs/crypto/crypto.c
index ce654526c0fb..984e190f9b89 100644
--- a/fs/crypto/crypto.c
+++ b/fs/crypto/crypto.c
@@ -427,8 +427,17 @@ fail:
*/
static int __init fscrypt_init(void)
{
+ /*
+ * Use an unbound workqueue to allow bios to be decrypted in parallel
+ * even when they happen to complete on the same CPU. This sacrifices
+ * locality, but it's worthwhile since decryption is CPU-intensive.
+ *
+ * Also use a high-priority workqueue to prioritize decryption work,
+ * which blocks reads from completing, over regular application tasks.
+ */
fscrypt_read_workqueue = alloc_workqueue("fscrypt_read_queue",
- WQ_HIGHPRI, 0);
+ WQ_UNBOUND | WQ_HIGHPRI,
+ num_online_cpus());
if (!fscrypt_read_workqueue)
goto fail;