author: Jan Kara <jack@suse.cz> 2010-09-21 11:49:01 +0200
committer: Jens Axboe <jaxboe@fusionio.com> 2010-09-22 09:48:47 +0200
commit: 371d217ee1ff8b418b8f73fb2a34990f951ec2d4
parent: 976e48f8a5b02fc33f3e5cad87fb3fcea041a49c
Commit Summary:
Diffstat:
1 file changed, 3 insertions, 1 deletion
diff --git a/fs/char_dev.c b/fs/char_dev.c
index f80a4f25123c..143d393881cb 100644
--- a/fs/char_dev.c
+++ b/fs/char_dev.c
@@ -40,7 +40,9 @@ 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;