ceph: make ->sync_fs not wait if wait==0
The ->sync_fs() super op only needs to wait if wait is true. Otherwise,
just get some dirty cap writeback started.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index d80699a..7f751f2 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -102,12 +102,21 @@
}
-static int ceph_syncfs(struct super_block *sb, int wait)
+static int ceph_sync_fs(struct super_block *sb, int wait)
{
- dout("sync_fs %d\n", wait);
+ struct ceph_client *client = ceph_sb_to_client(sb);
+
+ if (!wait) {
+ dout("sync_fs (non-blocking)\n");
+ ceph_flush_dirty_caps(&client->mdsc);
+ dout("sync_fs (non-blocking) done\n");
+ return 0;
+ }
+
+ dout("sync_fs (blocking)\n");
ceph_osdc_sync(&ceph_sb_to_client(sb)->osdc);
ceph_mdsc_sync(&ceph_sb_to_client(sb)->mdsc);
- dout("sync_fs %d done\n", wait);
+ dout("sync_fs (blocking) done\n");
return 0;
}
@@ -278,7 +287,7 @@
.alloc_inode = ceph_alloc_inode,
.destroy_inode = ceph_destroy_inode,
.write_inode = ceph_write_inode,
- .sync_fs = ceph_syncfs,
+ .sync_fs = ceph_sync_fs,
.put_super = ceph_put_super,
.show_options = ceph_show_options,
.statfs = ceph_statfs,