Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: ensure prealloc_blob is in place when removing xattr
  rbd: initialize snap_rwsem in rbd_add()
  ceph: enable/disable dentry complete flags via mount option
  vfs: export symbol d_find_any_alias()
  ceph: always initialize the dentry in open_root_dentry()
  libceph: remove useless return value for osd_client __send_request()
  ceph: avoid iput() while holding spinlock in ceph_dir_fsync
  ceph: avoid useless dget/dput in encode_fh
  ceph: dereference pointer after checking for NULL
  crush: fix force for non-root TAKE
  ceph: remove unnecessary d_fsdata conditional checks
  ceph: Use kmemdup rather than duplicating its implementation

Fix up conflicts in fs/ceph/super.c (d_alloc_root() failure handling vs
always initialize the dentry in open_root_dentry)

1 files changed, 15 insertions, 1 deletions

diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 48f61a12af66..00de2c9568cd 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -131,6 +131,8 @@ enum {
         Opt_rbytes,
         Opt_norbytes,
         Opt_noasyncreaddir,
+        Opt_dcache,
+        Opt_nodcache,
         Opt_ino32,
 };
 
@@ -152,6 +154,8 @@ static match_table_t fsopt_tokens = {
         {Opt_rbytes, "rbytes"},
         {Opt_norbytes, "norbytes"},
         {Opt_noasyncreaddir, "noasyncreaddir"},
+        {Opt_dcache, "dcache"},
+        {Opt_nodcache, "nodcache"},
         {Opt_ino32, "ino32"},
         {-1, NULL}
 };
@@ -231,6 +235,12 @@ static int parse_fsopt_token(char *c, void *private)
         case Opt_noasyncreaddir:
                 fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR;
                 break;
+        case Opt_dcache:
+                fsopt->flags |= CEPH_MOUNT_OPT_DCACHE;
+                break;
+        case Opt_nodcache:
+                fsopt->flags &= ~CEPH_MOUNT_OPT_DCACHE;
+                break;
         case Opt_ino32:
                 fsopt->flags |= CEPH_MOUNT_OPT_INO32;
                 break;
@@ -377,6 +387,10 @@ static int ceph_show_options(struct seq_file *m, struct dentry *root)
                 seq_puts(m, ",norbytes");
         if (fsopt->flags & CEPH_MOUNT_OPT_NOASYNCREADDIR)
                 seq_puts(m, ",noasyncreaddir");
+        if (fsopt->flags & CEPH_MOUNT_OPT_DCACHE)
+                seq_puts(m, ",dcache");
+        else
+                seq_puts(m, ",nodcache");
 
         if (fsopt->wsize)
                 seq_printf(m, ",wsize=%d", fsopt->wsize);
@@ -647,10 +661,10 @@ static struct dentry *open_root_dentry(struct ceph_fs_client *fsc,
                                 root = ERR_PTR(-ENOMEM);
                                 goto out;
                         }
-                        ceph_init_dentry(root);
                 } else {
                         root = d_obtain_alias(inode);
                 }
+                ceph_init_dentry(root);
                 dout("open_root_inode success, root dentry is %p\n", root);
         } else {
                 root = ERR_PTR(err);