Jeff Liu
2013-Dec-08 11:35 UTC
[Ocfs2-devel] [PATCH 3/3] ocfs2: Adjust minlen with discard_granularity in the FITRIM ioctl
From: Jie Liu <jeff.liu at oracle.com> Adjust minlen with discard_granularity for FITRIM ioctl(2) if the given minimum size in bytes is less than it because, discard granularity is used to tell us that the minimum size of extent that can be discarded by the storage device. This is inspired by Ext4 [ commit 5c2ed62fd4 ] from Lukas Czerner. Signed-off-by: Jie Liu <jeff.liu at oracle.com> --- fs/ocfs2/ioctl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index 4de6a2a..8ca3c29 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -980,6 +980,8 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) if (copy_from_user(&range, argp, sizeof(range))) return -EFAULT; + range.minlen = max_t(u64, q->limits.discard_granularity, + range.minlen); ret = ocfs2_trim_fs(sb, &range); if (ret < 0) return ret; -- 1.8.3.2