diff options
| author | Darrick J. Wong <darrick.wong@oracle.com> | 2016-11-09 23:13:11 +0100 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2016-12-10 21:39:45 +0100 |
| commit | 3e10b793fc40dfdbe51762e0d084bd6f2c8acaaa (patch) | |
| tree | df233a1038dc50358baf2e7dcd6d30bfbaf21ebb /fs/ocfs2/refcounttree.c | |
| parent | ocfs2: prohibit refcounted swapfiles (diff) | |
| download | linux-3e10b793fc40dfdbe51762e0d084bd6f2c8acaaa.tar.xz linux-3e10b793fc40dfdbe51762e0d084bd6f2c8acaaa.zip | |
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/refcounttree.c')
| -rw-r--r-- | fs/ocfs2/refcounttree.c | 3 |
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, |