1 files changed, 3 insertions, 4 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 5441ff1480f..0c55f8f3809 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -276,14 +276,13 @@ static int btrfs_ioctl_getversion(struct file *file, int __user *arg)
 
 static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg)
 {
-        struct btrfs_root *root = fdentry(file)->d_sb->s_fs_info;
-        struct btrfs_fs_info *fs_info = root->fs_info;
+        struct btrfs_fs_info *fs_info = btrfs_sb(fdentry(file)->d_sb);
         struct btrfs_device *device;
         struct request_queue *q;
         struct fstrim_range range;
         u64 minlen = ULLONG_MAX;
         u64 num_devices = 0;
-        u64 total_bytes = btrfs_super_total_bytes(root->fs_info->super_copy);
+        u64 total_bytes = btrfs_super_total_bytes(fs_info->super_copy);
         int ret;
 
         if (!capable(CAP_SYS_ADMIN))
@@ -312,7 +311,7 @@ static noinline int btrfs_ioctl_fitrim(struct file *file, void __user *arg)
 
         range.len = min(range.len, total_bytes - range.start);
         range.minlen = max(range.minlen, minlen);
-        ret = btrfs_trim_fs(root, &range);
+        ret = btrfs_trim_fs(fs_info->tree_root, &range);
         if (ret < 0)
                 return ret;