Commit 86e59436 authored Nov 22, 2016 by Darrick J. Wong

ocfs2: charge quota for reflinked blocks



When ocfs2 shares blocks from one file to another, it's necessary to
charge that many blocks to the quota because ocfs2 tallies block charges
according to the number of blocks mapped, not the number of physical
blocks used.

Without this patch, reflinking X blocks and then CoWing all of them
causes quota usage to *decrease* by X as seen in generic/305.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

parent aef73a61

fs/ocfs2/refcounttree.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -3933,6 +3933,13 @@ static int ocfs2_add_refcounted_extent(struct inode *inode,
		ret = ocfs2_increase_refcount(handle, ref_ci, ref_root_bh,
		p_cluster, num_clusters,
		meta_ac, dealloc);
		if (ret) {
		mlog_errno(ret);
		goto out_commit;
		}

		ret = dquot_alloc_space_nodirty(inode,
		ocfs2_clusters_to_bytes(osb->sb, num_clusters));
		if (ret)
		mlog_errno(ret);

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