ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.
The per-metadata-type ocfs2_journal_access_*() functions hook up jbd2
commit triggers and allow us to compute metadata ecc right before the
buffers are written out. This commit provides ecc for inodes, extent
blocks, group descriptors, and quota blocks. It is not safe to use
extened attributes and metaecc at the same time yet.
The ocfs2_extent_tree and ocfs2_path abstractions in alloc.c both hide
the type of block at their root. Before, it didn't matter, but now the
root block must use the appropriate ocfs2_journal_access_*() function.
To keep this abstract, the structures now have a pointer to the matching
journal_access function and a wrapper call to call it.
A few places use naked ocfs2_write_block() calls instead of adding the
blocks to the journal. We make sure to calculate their checksum and ecc
before the write.
Since we pass around the journal_access functions. Let's typedef them
in ocfs2.h.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index c22ff49..6e58fd5 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -298,11 +298,13 @@
static void __ocfs2_init_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
struct buffer_head *bh,
+ ocfs2_journal_access_func access,
void *obj,
struct ocfs2_extent_tree_operations *ops)
{
et->et_ops = ops;
et->et_root_bh = bh;
+ et->et_root_journal_access = access;
if (!obj)
obj = (void *)bh->b_data;
et->et_object = obj;
@@ -318,15 +320,16 @@
struct inode *inode,
struct buffer_head *bh)
{
- __ocfs2_init_extent_tree(et, inode, bh, NULL, &ocfs2_dinode_et_ops);
+ __ocfs2_init_extent_tree(et, inode, bh, ocfs2_journal_access_di,
+ NULL, &ocfs2_dinode_et_ops);
}
void ocfs2_init_xattr_tree_extent_tree(struct ocfs2_extent_tree *et,
struct inode *inode,
struct buffer_head *bh)
{
- __ocfs2_init_extent_tree(et, inode, bh, NULL,
- &ocfs2_xattr_tree_et_ops);
+ __ocfs2_init_extent_tree(et, inode, bh, ocfs2_journal_access_xb,
+ NULL, &ocfs2_xattr_tree_et_ops);
}
void ocfs2_init_xattr_value_extent_tree(struct ocfs2_extent_tree *et,
@@ -334,7 +337,7 @@
struct buffer_head *bh,
struct ocfs2_xattr_value_root *xv)
{
- __ocfs2_init_extent_tree(et, inode, bh, xv,
+ __ocfs2_init_extent_tree(et, inode, bh, ocfs2_journal_access, xv,
&ocfs2_xattr_value_et_ops);
}
@@ -356,6 +359,15 @@
et->et_ops->eo_update_clusters(inode, et, clusters);
}
+static inline int ocfs2_et_root_journal_access(handle_t *handle,
+ struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ int type)
+{
+ return et->et_root_journal_access(handle, inode, et->et_root_bh,
+ type);
+}
+
static inline int ocfs2_et_insert_check(struct inode *inode,
struct ocfs2_extent_tree *et,
struct ocfs2_extent_rec *rec)
@@ -396,12 +408,14 @@
#define OCFS2_MAX_PATH_DEPTH 5
struct ocfs2_path {
- int p_tree_depth;
- struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
+ int p_tree_depth;
+ ocfs2_journal_access_func p_root_access;
+ struct ocfs2_path_item p_node[OCFS2_MAX_PATH_DEPTH];
};
#define path_root_bh(_path) ((_path)->p_node[0].bh)
#define path_root_el(_path) ((_path)->p_node[0].el)
+#define path_root_access(_path)((_path)->p_root_access)
#define path_leaf_bh(_path) ((_path)->p_node[(_path)->p_tree_depth].bh)
#define path_leaf_el(_path) ((_path)->p_node[(_path)->p_tree_depth].el)
#define path_num_items(_path) ((_path)->p_tree_depth + 1)
@@ -434,6 +448,8 @@
*/
if (keep_root)
depth = le16_to_cpu(path_root_el(path)->l_tree_depth);
+ else
+ path_root_access(path) = NULL;
path->p_tree_depth = depth;
}
@@ -459,6 +475,7 @@
BUG_ON(path_root_bh(dest) != path_root_bh(src));
BUG_ON(path_root_el(dest) != path_root_el(src));
+ BUG_ON(path_root_access(dest) != path_root_access(src));
ocfs2_reinit_path(dest, 1);
@@ -480,6 +497,7 @@
int i;
BUG_ON(path_root_bh(dest) != path_root_bh(src));
+ BUG_ON(path_root_access(dest) != path_root_access(src));
for(i = 1; i < OCFS2_MAX_PATH_DEPTH; i++) {
brelse(dest->p_node[i].bh);
@@ -515,7 +533,8 @@
}
static struct ocfs2_path *ocfs2_new_path(struct buffer_head *root_bh,
- struct ocfs2_extent_list *root_el)
+ struct ocfs2_extent_list *root_el,
+ ocfs2_journal_access_func access)
{
struct ocfs2_path *path;
@@ -527,6 +546,7 @@
get_bh(root_bh);
path_root_bh(path) = root_bh;
path_root_el(path) = root_el;
+ path_root_access(path) = access;
}
return path;
@@ -534,12 +554,38 @@
static struct ocfs2_path *ocfs2_new_path_from_path(struct ocfs2_path *path)
{
- return ocfs2_new_path(path_root_bh(path), path_root_el(path));
+ return ocfs2_new_path(path_root_bh(path), path_root_el(path),
+ path_root_access(path));
}
static struct ocfs2_path *ocfs2_new_path_from_et(struct ocfs2_extent_tree *et)
{
- return ocfs2_new_path(et->et_root_bh, et->et_root_el);
+ return ocfs2_new_path(et->et_root_bh, et->et_root_el,
+ et->et_root_journal_access);
+}
+
+/*
+ * Journal the buffer at depth idx. All idx>0 are extent_blocks,
+ * otherwise it's the root_access function.
+ *
+ * I don't like the way this function's name looks next to
+ * ocfs2_journal_access_path(), but I don't have a better one.
+ */
+static int ocfs2_path_bh_journal_access(handle_t *handle,
+ struct inode *inode,
+ struct ocfs2_path *path,
+ int idx)
+{
+ ocfs2_journal_access_func access = path_root_access(path);
+
+ if (!access)
+ access = ocfs2_journal_access;
+
+ if (idx)
+ access = ocfs2_journal_access_eb;
+
+ return access(handle, inode, path->p_node[idx].bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
}
/*
@@ -554,8 +600,7 @@
goto out;
for(i = 0; i < path_num_items(path); i++) {
- ret = ocfs2_journal_access(handle, inode, path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, path, i);
if (ret < 0) {
mlog_errno(ret);
goto out;
@@ -708,8 +753,11 @@
* local to this block.
*/
rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &eb->h_check);
- if (rc)
+ if (rc) {
+ mlog(ML_ERROR, "Checksum failed for extent block %llu\n",
+ (unsigned long long)bh->b_blocknr);
return rc;
+ }
/*
* Errors after here are fatal.
@@ -842,8 +890,8 @@
}
ocfs2_set_new_buffer_uptodate(inode, bhs[i]);
- status = ocfs2_journal_access(handle, inode, bhs[i],
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_eb(handle, inode, bhs[i],
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -986,8 +1034,8 @@
BUG_ON(!OCFS2_IS_VALID_EXTENT_BLOCK(eb));
eb_el = &eb->h_list;
- status = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_eb(handle, inode, bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1026,21 +1074,21 @@
* journal_dirty erroring as it won't unless we've aborted the
* handle (in which case we would never be here) so reserving
* the write with journal_access is all we need to do. */
- status = ocfs2_journal_access(handle, inode, *last_eb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_eb(handle, inode, *last_eb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
- status = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
}
if (eb_bh) {
- status = ocfs2_journal_access(handle, inode, eb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_eb(handle, inode, eb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1129,8 +1177,8 @@
eb_el = &eb->h_list;
root_el = et->et_root_el;
- status = ocfs2_journal_access(handle, inode, new_eb_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ status = ocfs2_journal_access_eb(handle, inode, new_eb_bh,
+ OCFS2_JOURNAL_ACCESS_CREATE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1148,8 +1196,8 @@
goto bail;
}
- status = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -1918,25 +1966,23 @@
root_bh = left_path->p_node[subtree_index].bh;
BUG_ON(root_bh != right_path->p_node[subtree_index].bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
}
for(i = subtree_index + 1; i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2455,9 +2501,9 @@
return -EAGAIN;
if (le16_to_cpu(right_leaf_el->l_next_free_rec) > 1) {
- ret = ocfs2_journal_access(handle, inode,
- path_leaf_bh(right_path),
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_eb(handle, inode,
+ path_leaf_bh(right_path),
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2474,8 +2520,8 @@
* We have to update i_last_eb_blk during the meta
* data delete.
*/
- ret = ocfs2_journal_access(handle, inode, et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2490,25 +2536,23 @@
*/
BUG_ON(right_has_empty && !del_right_subtree);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
}
for(i = subtree_index + 1; i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2653,16 +2697,17 @@
static int ocfs2_rotate_rightmost_leaf_left(struct inode *inode,
handle_t *handle,
- struct buffer_head *bh,
- struct ocfs2_extent_list *el)
+ struct ocfs2_path *path)
{
int ret;
+ struct buffer_head *bh = path_leaf_bh(path);
+ struct ocfs2_extent_list *el = path_leaf_el(path);
if (!ocfs2_is_empty_extent(&el->l_recs[0]))
return 0;
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, path,
+ path_num_items(path) - 1);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2744,9 +2789,8 @@
* Caller might still want to make changes to the
* tree root, so re-add it to the journal here.
*/
- ret = ocfs2_journal_access(handle, inode,
- path_root_bh(left_path),
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, 0);
if (ret) {
mlog_errno(ret);
goto out;
@@ -2929,8 +2973,7 @@
* it up front.
*/
ret = ocfs2_rotate_rightmost_leaf_left(inode, handle,
- path_leaf_bh(path),
- path_leaf_el(path));
+ path);
if (ret)
mlog_errno(ret);
goto out;
@@ -3164,8 +3207,8 @@
root_bh = left_path->p_node[subtree_index].bh;
BUG_ON(root_bh != right_path->p_node[subtree_index].bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3173,17 +3216,15 @@
for (i = subtree_index + 1;
i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3195,8 +3236,8 @@
right_rec = &el->l_recs[index + 1];
}
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, left_path,
+ path_num_items(left_path) - 1);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3335,8 +3376,8 @@
root_bh = left_path->p_node[subtree_index].bh;
BUG_ON(root_bh != right_path->p_node[subtree_index].bh);
- ret = ocfs2_journal_access(handle, inode, root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, right_path,
+ subtree_index);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3344,17 +3385,15 @@
for (i = subtree_index + 1;
i < path_num_items(right_path); i++) {
- ret = ocfs2_journal_access(handle, inode,
- right_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ right_path, i);
if (ret) {
mlog_errno(ret);
goto out;
}
- ret = ocfs2_journal_access(handle, inode,
- left_path->p_node[i].bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode,
+ left_path, i);
if (ret) {
mlog_errno(ret);
goto out;
@@ -3366,8 +3405,8 @@
has_empty_extent = 1;
}
- ret = ocfs2_journal_access(handle, inode, bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_path_bh_journal_access(handle, inode, left_path,
+ path_num_items(left_path) - 1);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4009,8 +4048,8 @@
el = et->et_root_el;
- ret = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4071,8 +4110,8 @@
* ocfs2_rotate_tree_right() might have extended the
* transaction without re-journaling our tree root.
*/
- ret = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -4593,9 +4632,9 @@
BUG_ON(num_bits > clusters_to_add);
- /* reserve our write early -- insert_extent may update the inode */
- status = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ /* reserve our write early -- insert_extent may update the tree root */
+ status = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto leave;
@@ -5347,8 +5386,8 @@
goto out;
}
- ret = ocfs2_journal_access(handle, inode, et->et_root_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_et_root_journal_access(handle, inode, et,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
@@ -5461,8 +5500,8 @@
goto bail;
}
- status = ocfs2_journal_access(handle, tl_inode, tl_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, tl_inode, tl_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -5523,8 +5562,8 @@
while (i >= 0) {
/* Caller has given us at least enough credits to
* update the truncate log dinode */
- status = ocfs2_journal_access(handle, tl_inode, tl_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_di(handle, tl_inode, tl_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -5780,6 +5819,7 @@
* tl_used. */
tl->tl_used = 0;
+ ocfs2_compute_meta_ecc(osb->sb, tl_bh->b_data, &di->i_check);
status = ocfs2_write_block(osb, tl_bh, tl_inode);
if (status < 0) {
mlog_errno(status);
@@ -6546,8 +6586,8 @@
}
if (last_eb_bh) {
- status = ocfs2_journal_access(handle, inode, last_eb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ status = ocfs2_journal_access_eb(handle, inode, last_eb_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
goto bail;
@@ -6908,8 +6948,8 @@
goto out_unlock;
}
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;
@@ -7043,7 +7083,8 @@
new_highest_cpos = ocfs2_clusters_for_bytes(osb->sb,
i_size_read(inode));
- path = ocfs2_new_path(fe_bh, &di->id2.i_list);
+ path = ocfs2_new_path(fe_bh, &di->id2.i_list,
+ ocfs2_journal_access_di);
if (!path) {
status = -ENOMEM;
mlog_errno(status);
@@ -7276,8 +7317,8 @@
goto out;
}
- ret = ocfs2_journal_access(handle, inode, di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_commit;