Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number. (acf3bb00) · Commits · 戴 / test

Current refcounttree codes actually didn't writeback the new pages out in write-back mode, due to a bug of always passing a ZERO number of clusters to 'ocfs2_cow_sync_writeback', the patch tries to pass a proper one in. Signed-off-by:

Tristan Ye <tristan.ye@oracle.com> Cc: stable@kernel.org Signed-off-by:

Joel Becker <jlbec@evilplan.org>

fs/ocfs2/refcounttree.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -3228,7 +3228,7 @@ static int ocfs2_make_clusters_writable(struct super_block *sb,
		u32 num_clusters, unsigned int e_flags)
		{
		int ret, delete, index, credits = 0;
		u32 new_bit, new_len;
		u32 new_bit, new_len, orig_num_clusters;
		unsigned int set_len;
		struct ocfs2_super *osb = OCFS2_SB(sb);
		handle_t *handle;
		@@ -3261,6 +3261,8 @@ static int ocfs2_make_clusters_writable(struct super_block *sb,
		goto out;
		}

		orig_num_clusters = num_clusters;

		while (num_clusters) {
		ret = ocfs2_get_refcount_rec(ref_ci, context->ref_root_bh,
		p_cluster, num_clusters,
		@@ -3348,7 +3350,8 @@ static int ocfs2_make_clusters_writable(struct super_block *sb,
		* in write-back mode.
		*/
		if (context->get_clusters == ocfs2_di_get_clusters) {
		ret = ocfs2_cow_sync_writeback(sb, context, cpos, num_clusters);
		ret = ocfs2_cow_sync_writeback(sb, context, cpos,
		orig_num_clusters);
		if (ret)
		mlog_errno(ret);
		}

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