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authorDarrick J. Wong <darrick.wong@oracle.com>2016-11-10 01:13:11 +0300
committerDarrick J. Wong <darrick.wong@oracle.com>2016-12-10 23:39:45 +0300
commit3e10b793fc40dfdbe51762e0d084bd6f2c8acaaa (patch)
treedf233a1038dc50358baf2e7dcd6d30bfbaf21ebb /fs/ocfs2
parent06a70305812c3973c66824f26223656283c59b27 (diff)
downloadlinux-3e10b793fc40dfdbe51762e0d084bd6f2c8acaaa.tar.xz
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 <darrick.wong@oracle.com>
Diffstat (limited to 'fs/ocfs2')
-rw-r--r--fs/ocfs2/refcounttree.c3
1 files changed, 3 insertions, 0 deletions
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,