ocfs2: Add FITRIM ioctl.

Add the corresponding ioctl function for FITRIM.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>

1 files changed, 24 insertions, 0 deletions

diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 8f13c5989eae..312a28f433a4 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -542,6 +542,29 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
                         return -EFAULT;
 
                 return ocfs2_info_handle(inode, &info, 0);
+        case FITRIM:
+        {
+                struct super_block *sb = inode->i_sb;
+                struct fstrim_range range;
+                int ret = 0;
+
+                if (!capable(CAP_SYS_ADMIN))
+                        return -EPERM;
+
+                if (copy_from_user(&range, (struct fstrim_range *)arg,
+                    sizeof(range)))
+                        return -EFAULT;
+
+                ret = ocfs2_trim_fs(sb, &range);
+                if (ret < 0)
+                        return ret;
+
+                if (copy_to_user((struct fstrim_range *)arg, &range,
+                    sizeof(range)))
+                        return -EFAULT;
+
+                return 0;
+        }
         default:
                 return -ENOTTY;
         }
@@ -569,6 +592,7 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
         case OCFS2_IOC_GROUP_EXTEND:
         case OCFS2_IOC_GROUP_ADD:
         case OCFS2_IOC_GROUP_ADD64:
+        case FITRIM:
                 break;
         case OCFS2_IOC_REFLINK:
                 if (copy_from_user(&args, (struct reflink_arguments *)arg,