ceph: fix dcache/nocache mount option

Signed-off-by: Yan, Zheng <zyan@redhat.com>

2 files changed, 4 insertions, 1 deletions

diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 83e9976f7189..92a6b6018511 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -281,6 +281,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
         /* can we use the dcache? */
         spin_lock(&ci->i_ceph_lock);
         if ((ctx->pos == 2 || fi->dentry) &&
+            ceph_test_mount_opt(fsc, DCACHE) &&
             !ceph_test_mount_opt(fsc, NOASYNCREADDIR) &&
             ceph_snap(inode) != CEPH_SNAPDIR &&
             __ceph_dir_is_complete_ordered(ci) &&
@@ -629,6 +630,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
                             fsc->mount_options->snapdir_name,
                             dentry->d_name.len) &&
                     !is_root_ceph_dentry(dir, dentry) &&
+                    ceph_test_mount_opt(fsc, DCACHE) &&
                     __ceph_dir_is_complete(ci) &&
                     (__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) {
                         spin_unlock(&ci->i_ceph_lock);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 04c8124ed30e..f8ea7ebe9d1f 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -36,7 +36,8 @@
 #define CEPH_MOUNT_OPT_DCACHE          (1<<9) /* use dcache for readdir etc */
 #define CEPH_MOUNT_OPT_FSCACHE         (1<<10) /* use fscache */
 
-#define CEPH_MOUNT_OPT_DEFAULT    (CEPH_MOUNT_OPT_RBYTES)
+#define CEPH_MOUNT_OPT_DEFAULT    (CEPH_MOUNT_OPT_RBYTES | \
+                                   CEPH_MOUNT_OPT_DCACHE)
 
 #define ceph_set_mount_opt(fsc, opt) \
         (fsc)->mount_options->flags |= CEPH_MOUNT_OPT_##opt;