From: Tristan Ye Date: Fri, 21 Jan 2011 10:20:18 +0000 (+0800) Subject: Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number. X-Git-Tag: v2.6.34.10~113 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b780bba8f434c971c8d8fd47b373a2b811e9ef66;p=karo-tx-linux.git Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number. commit acf3bb007e5636ef4c17505affb0974175108553 upstream. 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 Signed-off-by: Joel Becker Signed-off-by: Paul Gortmaker --- diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c index 9e6dc1d3eb34..fe8d576746a2 100644 --- a/fs/ocfs2/refcounttree.c +++ b/fs/ocfs2/refcounttree.c @@ -3223,7 +3223,7 @@ 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; @@ -3256,6 +3256,8 @@ 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, @@ -3343,7 +3345,8 @@ 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); }