NFSv4.1: Ensure state manager thread dies on last umount

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

diff --git a/fs/char_dev.c b/fs/char_dev.c
index d6db933df2b27ce43c0fe31d6e35bb0968598891..be7613ebb6618fcb25bd2de01f44ffbac554f6cb 100644 (file)
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -39,7 +39,9 @@ struct backing_dev_info directly_mappable_cdev_bdi = {
 #endif
                /* permit direct mmap, for read, write or exec */
                BDI_CAP_MAP_DIRECT |
-               BDI_CAP_READ_MAP | BDI_CAP_WRITE_MAP | BDI_CAP_EXEC_MAP),
+               BDI_CAP_READ_MAP | BDI_CAP_WRITE_MAP | BDI_CAP_EXEC_MAP |
+               /* no writeback happens */
+               BDI_CAP_NO_ACCT_AND_WRITEBACK),
 };
 
 static struct kobj_map *cdev_map;