From 3e10b793fc40dfdbe51762e0d084bd6f2c8acaaa Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Wed, 9 Nov 2016 14:13:11 -0800 Subject: ocfs2: budget for extent tree splits when adding refcount flag When we're adding the refcount flag to an extent, we have to budget enough space to handle a full extent btree split in addition to whatever modifications have to be made to the refcount btree. We don't currently do this, with the result that generic/186 crashes when we need an extent split but not a refcount split because meta_ac never gets allocated. Signed-off-by: Darrick J. Wong --- fs/ocfs2/refcounttree.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/ocfs2') diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 3410eb105b0d..6c98d567ba01 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -3692,6 +3692,9 @@ int ocfs2_add_refcount_flag(struct inode *inode, struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct ocfs2_alloc_context *meta_ac = NULL; + /* We need to be able to handle at least an extent tree split. */ + ref_blocks = ocfs2_extend_meta_needed(data_et->et_root_el); + ret = ocfs2_calc_refcount_meta_credits(inode->i_sb, ref_ci, ref_root_bh, p_cluster, num_clusters, -- cgit v1.2.3