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Diffstat (limited to 'fs/ext4/ioctl.c')
-rw-r--r--fs/ext4/ioctl.c7
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;