[PATCH] ceph: enable async dirops by default

[Jeff Layton <jlayton@kernel.org>]

Async dirops have been supported in mainline kernels for quite some time
now, and we've recently (as of June) started doing regular testing in
teuthology with '-o nowsync'. So far, that hasn't uncovered any issues,
so I think the time is right to flip the default for this option.

Enable async dirops by default, and change /proc/mounts to show "wsync"
when they are disabled rather than "nowsync" when they are enabled.

Cc: Patrick Donnelly <pdonnell@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/ceph/super.c | 4 ++--
 fs/ceph/super.h | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 609ffc8c2d78..f517ad9eeb26 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -698,8 +698,8 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
 	if (fsopt->flags & CEPH_MOUNT_OPT_CLEANRECOVER)
 		seq_show_option(m, "recover_session", "clean");
 
-	if (fsopt->flags & CEPH_MOUNT_OPT_ASYNC_DIROPS)
-		seq_puts(m, ",nowsync");
+	if (!(fsopt->flags & CEPH_MOUNT_OPT_ASYNC_DIROPS))
+		seq_puts(m, ",wsync");
 
 	if (fsopt->wsize != CEPH_MAX_WRITE_SIZE)
 		seq_printf(m, ",wsize=%u", fsopt->wsize);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 389b45ac291b..0bc36cf4c683 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -48,7 +48,8 @@
 
 #define CEPH_MOUNT_OPT_DEFAULT			\
 	(CEPH_MOUNT_OPT_DCACHE |		\
-	 CEPH_MOUNT_OPT_NOCOPYFROM)
+	 CEPH_MOUNT_OPT_NOCOPYFROM |		\
+	 CEPH_MOUNT_OPT_ASYNC_DIROPS)
 
 #define ceph_set_mount_opt(fsc, opt) \
 	(fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt
-- 
2.31.1