1 files changed, 26 insertions, 17 deletions

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index a7acfe639a44..2ff7cd2db25f 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -68,7 +68,7 @@ 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_flushoncommit, Opt_err,
+        Opt_ratio, Opt_flushoncommit, Opt_err,
 };
 
 static match_table_t tokens = {
@@ -87,6 +87,7 @@ static match_table_t tokens = {
         {Opt_noacl, "noacl"},
         {Opt_notreelog, "notreelog"},
         {Opt_flushoncommit, "flushoncommit"},
+        {Opt_ratio, "metadata_ratio=%d"},
         {Opt_err, NULL},
 };
 
@@ -195,7 +196,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                                 info->max_extent = max_t(u64,
                                         info->max_extent, root->sectorsize);
                                 printk(KERN_INFO "btrfs: max_extent at %llu\n",
-                                       info->max_extent);
+                                       (unsigned long long)info->max_extent);
                         }
                         break;
                 case Opt_max_inline:
@@ -210,7 +211,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                                                 root->sectorsize);
                                 }
                                 printk(KERN_INFO "btrfs: max_inline at %llu\n",
-                                        info->max_inline);
+                                        (unsigned long long)info->max_inline);
                         }
                         break;
                 case Opt_alloc_start:
@@ -220,7 +221,7 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                                 kfree(num);
                                 printk(KERN_INFO
                                         "btrfs: allocations start at %llu\n",
-                                        info->alloc_start);
+                                        (unsigned long long)info->alloc_start);
                         }
                         break;
                 case Opt_noacl:
@@ -234,6 +235,15 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                         printk(KERN_INFO "btrfs: turning on flush-on-commit\n");
                         btrfs_set_opt(info->mount_opt, FLUSHONCOMMIT);
                         break;
+                case Opt_ratio:
+                        intarg = 0;
+                        match_int(&args[0], &intarg);
+                        if (intarg) {
+                                info->metadata_ratio = intarg;
+                                printk(KERN_INFO "btrfs: metadata ratio %d\n",
+                                       info->metadata_ratio);
+                        }
+                        break;
                 default:
                         break;
                 }
@@ -410,11 +420,14 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
         if (btrfs_test_opt(root, NOBARRIER))
                 seq_puts(seq, ",nobarrier");
         if (info->max_extent != (u64)-1)
-                seq_printf(seq, ",max_extent=%llu", info->max_extent);
+                seq_printf(seq, ",max_extent=%llu",
+                           (unsigned long long)info->max_extent);
         if (info->max_inline != 8192 * 1024)
-                seq_printf(seq, ",max_inline=%llu", info->max_inline);
+                seq_printf(seq, ",max_inline=%llu",
+                           (unsigned long long)info->max_inline);
         if (info->alloc_start != 0)
-                seq_printf(seq, ",alloc_start=%llu", info->alloc_start);
+                seq_printf(seq, ",alloc_start=%llu",
+                           (unsigned long long)info->alloc_start);
         if (info->thread_pool_size !=  min_t(unsigned long,
                                              num_online_cpus() + 2, 8))
                 seq_printf(seq, ",thread_pool=%d", info->thread_pool_size);
@@ -423,9 +436,9 @@ static int btrfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
         if (btrfs_test_opt(root, SSD))
                 seq_puts(seq, ",ssd");
         if (btrfs_test_opt(root, NOTREELOG))
-                seq_puts(seq, ",no-treelog");
+                seq_puts(seq, ",notreelog");
         if (btrfs_test_opt(root, FLUSHONCOMMIT))
-                seq_puts(seq, ",flush-on-commit");
+                seq_puts(seq, ",flushoncommit");
         if (!(root->fs_info->sb->s_flags & MS_POSIXACL))
                 seq_puts(seq, ",noacl");
         return 0;
@@ -489,8 +502,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
 
         if (s->s_root) {
                 if ((flags ^ s->s_flags) & MS_RDONLY) {
-                        up_write(&s->s_umount);
-                        deactivate_super(s);
+                        deactivate_locked_super(s);
                         error = -EBUSY;
                         goto error_close_devices;
                 }
@@ -504,8 +516,7 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
                 error = btrfs_fill_super(s, fs_devices, data,
                                          flags & MS_SILENT ? 1 : 0);
                 if (error) {
-                        up_write(&s->s_umount);
-                        deactivate_super(s);
+                        deactivate_locked_super(s);
                         goto error_free_subvol_name;
                 }
 
@@ -522,15 +533,13 @@ static int btrfs_get_sb(struct file_system_type *fs_type, int flags,
                 mutex_unlock(&s->s_root->d_inode->i_mutex);
 
                 if (IS_ERR(root)) {
-                        up_write(&s->s_umount);
-                        deactivate_super(s);
+                        deactivate_locked_super(s);
                         error = PTR_ERR(root);
                         goto error_free_subvol_name;
                 }
                 if (!root->d_inode) {
                         dput(root);
-                        up_write(&s->s_umount);
-                        deactivate_super(s);
+                        deactivate_locked_super(s);
                         error = -ENXIO;
                         goto error_free_subvol_name;
                 }