1 files changed, 32 insertions, 32 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 2ff7cd2db25f..9f179d4832d5 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -52,7 +52,6 @@
 #include "export.h"
 #include "compression.h"
 
-
 static struct super_operations btrfs_super_ops;
 
 static void btrfs_put_super(struct super_block *sb)
@@ -67,8 +66,8 @@ static void btrfs_put_super(struct super_block *sb)
 enum {
         Opt_degraded, Opt_subvol, Opt_device, Opt_nodatasum, Opt_nodatacow,
         Opt_max_extent, Opt_max_inline, Opt_alloc_start, Opt_nobarrier,
-        Opt_ssd, Opt_thread_pool, Opt_noacl,  Opt_compress, Opt_notreelog,
-        Opt_ratio, Opt_flushoncommit, Opt_err,
+        Opt_ssd, Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl,
+        Opt_compress, Opt_notreelog, Opt_ratio, Opt_flushoncommit, Opt_err,
 };
 
 static match_table_t tokens = {
@@ -84,6 +83,8 @@ static match_table_t tokens = {
         {Opt_thread_pool, "thread_pool=%d"},
         {Opt_compress, "compress"},
         {Opt_ssd, "ssd"},
+        {Opt_ssd_spread, "ssd_spread"},
+        {Opt_nossd, "nossd"},
         {Opt_noacl, "noacl"},
         {Opt_notreelog, "notreelog"},
         {Opt_flushoncommit, "flushoncommit"},
@@ -158,7 +159,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                          */
                         break;
                 case Opt_nodatasum:
-                        printk(KERN_INFO "btrfs: setting nodatacsum\n");
+                        printk(KERN_INFO "btrfs: setting nodatasum\n");
                         btrfs_set_opt(info->mount_opt, NODATASUM);
                         break;
                 case Opt_nodatacow:
@@ -174,6 +175,19 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                         printk(KERN_INFO "btrfs: use ssd allocation scheme\n");
                         btrfs_set_opt(info->mount_opt, SSD);
                         break;
+                case Opt_ssd_spread:
+                        printk(KERN_INFO "btrfs: use spread ssd "
+                               "allocation scheme\n");
+                        btrfs_set_opt(info->mount_opt, SSD);
+                        btrfs_set_opt(info->mount_opt, SSD_SPREAD);
+                        break;
+                case Opt_nossd:
+                        printk(KERN_INFO "btrfs: not using ssd allocation "
+                               "scheme\n");
+                        btrfs_set_opt(info->mount_opt, NOSSD);
+                        btrfs_clear_opt(info->mount_opt, SSD);
+                        btrfs_clear_opt(info->mount_opt, SSD_SPREAD);
+                        break;
                 case Opt_nobarrier:
                         printk(KERN_INFO "btrfs: turning off barriers\n");
                         btrfs_set_opt(info->mount_opt, NOBARRIER);
@@ -322,7 +336,7 @@ static int btrfs_fill_super(struct super_block *sb,
         struct dentry *root_dentry;
         struct btrfs_super_block *disk_super;
         struct btrfs_root *tree_root;
-        struct btrfs_inode *bi;
+        struct btrfs_key key;
         int err;
 
         sb->s_maxbytes = MAX_LFS_FILESIZE;
@@ -341,23 +355,15 @@ static int btrfs_fill_super(struct super_block *sb,
         }
         sb->s_fs_info = tree_root;
         disk_super = &tree_root->fs_info->super_copy;
-        inode = btrfs_iget_locked(sb, BTRFS_FIRST_FREE_OBJECTID,
-                                  tree_root->fs_info->fs_root);
-        bi = BTRFS_I(inode);
-        bi->location.objectid = inode->i_ino;
-        bi->location.offset = 0;
-        bi->root = tree_root->fs_info->fs_root;
-
-        btrfs_set_key_type(&bi->location, BTRFS_INODE_ITEM_KEY);
 
-        if (!inode) {
-                err = -ENOMEM;
+        key.objectid = BTRFS_FIRST_FREE_OBJECTID;
+        key.type = BTRFS_INODE_ITEM_KEY;
+        key.offset = 0;
+        inode = btrfs_iget(sb, &key, tree_root->fs_info->fs_root);
+        if (IS_ERR(inode)) {
+                err = PTR_ERR(inode);
                 goto fail_close;
         }
-        if (inode->i_state & I_NEW) {
-                btrfs_read_locked_inode(inode);
-                unlock_new_inode(inode);
-        }
 
         root_dentry = d_alloc_root(inode);
         if (!root_dentry) {
@@ -388,10 +394,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
         struct btrfs_root *root = btrfs_sb(sb);
         int ret;
 
-        if (sb->s_flags & MS_RDONLY)
-                return 0;
-
-        sb->s_dirt = 0;
         if (!wait) {
                 filemap_flush(root->fs_info->btree_inode->i_mapping);
                 return 0;
@@ -402,7 +404,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait)
 
         trans = btrfs_start_transaction(root, 1);
         ret = btrfs_commit_transaction(trans, root);
-        sb->s_dirt = 0;
         return ret;
 }
 
@@ -433,7 +434,11 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
                 seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
         if (btrfs_test_opt(root, COMPRESS))
                 seq_puts(seq, ",compress");
-        if (btrfs_test_opt(root, SSD))
+        if (btrfs_test_opt(root, NOSSD))
+                seq_puts(seq, ",nossd");
+        if (btrfs_test_opt(root, SSD_SPREAD))
+                seq_puts(seq, ",ssd_spread");
+        else if (btrfs_test_opt(root, SSD))
                 seq_puts(seq, ",ssd");
         if (btrfs_test_opt(root, NOTREELOG))
                 seq_puts(seq, ",notreelog");
@@ -444,11 +449,6 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
         return 0;
 }
 
-static void btrfs_write_super(struct super_block *sb)
-{
-        sb->s_dirt = 0;
-}
-
 static int btrfs_test_super(struct super_block *s, void *data)
 {
         struct btrfs_fs_devices *test_fs_devices = data;
@@ -584,7 +584,8 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data)
                 if (btrfs_super_log_root(&root->fs_info->super_copy) != 0)
                         return -EINVAL;
 
-                ret = btrfs_cleanup_reloc_trees(root);
+                /* recover relocation */
+                ret = btrfs_recover_relocation(root);
                 WARN_ON(ret);
 
                 ret = btrfs_cleanup_fs_roots(root->fs_info);
@@ -678,7 +679,6 @@ static int btrfs_unfreeze(struct super_block *sb)
 static struct super_operations btrfs_super_ops = {
         .delete_inode   = btrfs_delete_inode,
         .put_super      = btrfs_put_super,
-        .write_super    = btrfs_write_super,
         .sync_fs        = btrfs_sync_fs,
         .show_options   = btrfs_show_options,
         .write_inode    = btrfs_write_inode,