diff options
Diffstat (limited to 'fs/ext4/ioctl.c')
| -rw-r--r-- | fs/ext4/ioctl.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index a84faa110bc..808c554e773 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -334,16 +334,22 @@ mext_out: case FITRIM: { struct super_block *sb = inode->i_sb; + struct request_queue *q = bdev_get_queue(sb->s_bdev); struct fstrim_range range; int ret = 0; if (!capable(CAP_SYS_ADMIN)) return -EPERM; + if (!blk_queue_discard(q)) + return -EOPNOTSUPP; + if (copy_from_user(&range, (struct fstrim_range *)arg, sizeof(range))) return -EFAULT; + range.minlen = max((unsigned int)range.minlen, + q->limits.discard_granularity); ret = ext4_trim_fs(sb, &range); if (ret < 0) return ret; @@ -421,6 +427,7 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return err; } case EXT4_IOC_MOVE_EXT: + case FITRIM: break; default: return -ENOIOCTLCMD; |