[Ocfs2-devel] [PATCH] ocfs2: make xattr extension work with new local alloc reservation.
Tao Ma
tao.ma at oracle.com
Thu Jun 17 20:02:50 PDT 2010
New local alloc reservation can give us less clusters than
what we want and ask us to restart the transaction, so let
ocfs2_xattr_extend_allocation restart the transaction in
this case.
Signed-off-by: Tao Ma <tao.ma at oracle.com>
---
fs/ocfs2/xattr.c | 33 +++++++++++++++++++++++++--------
1 files changed, 25 insertions(+), 8 deletions(-)
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index e97b348..894734b 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -709,7 +709,7 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
struct ocfs2_xattr_value_buf *vb,
struct ocfs2_xattr_set_ctxt *ctxt)
{
- int status = 0;
+ int status = 0, credits;
handle_t *handle = ctxt->handle;
enum ocfs2_alloc_restarted why;
u32 prev_clusters, logical_start = le32_to_cpu(vb->vb_xv->xr_clusters);
@@ -719,6 +719,7 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
ocfs2_init_xattr_value_extent_tree(&et, INODE_CACHE(inode), vb);
+restarted_transaction:
status = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
@@ -735,8 +736,9 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
ctxt->data_ac,
ctxt->meta_ac,
&why);
- if (status < 0) {
- mlog_errno(status);
+ if ((status < 0) && (status != -EAGAIN)) {
+ if (status != -ENOSPC)
+ mlog_errno(status);
goto leave;
}
@@ -744,11 +746,26 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
clusters_to_add -= le32_to_cpu(vb->vb_xv->xr_clusters) - prev_clusters;
- /*
- * We should have already allocated enough space before the transaction,
- * so no need to restart.
- */
- BUG_ON(why != RESTART_NONE || clusters_to_add);
+ if (why != RESTART_NONE && clusters_to_add) {
+ /*
+ * We can only fail in case the alloc file doesn't give up
+ * enough clusters.
+ */
+ BUG_ON(why == RESTART_META);
+
+ mlog(0, "restarting xattr value extension for %u clusters,.\n",
+ clusters_to_add);
+ credits = ocfs2_calc_extend_credits(inode->i_sb,
+ &vb->vb_xv->xr_list,
+ clusters_to_add);
+ status = ocfs2_extend_trans(handle, credits);
+ if (status < 0) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto leave;
+ }
+ goto restarted_transaction;
+ }
leave:
--
1.5.5
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