#include "buffer_head_io.h"
+/*
+ * ocfs2_extent_tree and ocfs2_extent_tree_operations are used to abstract
+ * the b-tree operations in ocfs2. Now all the b-tree operations are not
+ * limited to ocfs2_dinode only. Any data which need to allocate clusters
+ * to store can use b-tree. And it only needs to implement its ocfs2_extent_tree
+ * and operation.
+ *
+ * ocfs2_extent_tree contains info for the root of the b-tree, it must have a
+ * root ocfs2_extent_list and a root_bh so that they can be used in the b-tree
+ * functions.
+ * ocfs2_extent_tree_operations abstract the normal operations we do for
+ * the root of extent b-tree.
+ */
+struct ocfs2_extent_tree;
+
+struct ocfs2_extent_tree_operations {
+ void (*set_last_eb_blk) (struct ocfs2_extent_tree *et, u64 blkno);
+ u64 (*get_last_eb_blk) (struct ocfs2_extent_tree *et);
+ void (*update_clusters) (struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ u32 new_clusters);
+ int (*sanity_check) (struct inode *inode, struct ocfs2_extent_tree *et);
+};
+
+struct ocfs2_extent_tree {
+ enum ocfs2_extent_tree_type type;
+ struct ocfs2_extent_tree_operations *eops;
+ struct buffer_head *root_bh;
+ struct ocfs2_extent_list *root_el;
+};
+
+static void ocfs2_dinode_set_last_eb_blk(struct ocfs2_extent_tree *et,
+ u64 blkno)
+{
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)et->root_bh->b_data;
+
+ BUG_ON(et->type != OCFS2_DINODE_EXTENT);
+ di->i_last_eb_blk = cpu_to_le64(blkno);
+}
+
+static u64 ocfs2_dinode_get_last_eb_blk(struct ocfs2_extent_tree *et)
+{
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)et->root_bh->b_data;
+
+ BUG_ON(et->type != OCFS2_DINODE_EXTENT);
+ return le64_to_cpu(di->i_last_eb_blk);
+}
+
+static void ocfs2_dinode_update_clusters(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ u32 clusters)
+{
+ struct ocfs2_dinode *di =
+ (struct ocfs2_dinode *)et->root_bh->b_data;
+
+ le32_add_cpu(&di->i_clusters, clusters);
+ spin_lock(&OCFS2_I(inode)->ip_lock);
+ OCFS2_I(inode)->ip_clusters = le32_to_cpu(di->i_clusters);
+ spin_unlock(&OCFS2_I(inode)->ip_lock);
+}
+
+static int ocfs2_dinode_sanity_check(struct inode *inode,
+ struct ocfs2_extent_tree *et)
+{
+ int ret = 0;
+ struct ocfs2_dinode *di;
+
+ BUG_ON(et->type != OCFS2_DINODE_EXTENT);
+
+ di = (struct ocfs2_dinode *)et->root_bh->b_data;
+ if (!OCFS2_IS_VALID_DINODE(di)) {
+ ret = -EIO;
+ ocfs2_error(inode->i_sb,
+ "Inode %llu has invalid path root",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno);
+ }
+
+ return ret;
+}
+
+static struct ocfs2_extent_tree_operations ocfs2_dinode_et_ops = {
+ .set_last_eb_blk = ocfs2_dinode_set_last_eb_blk,
+ .get_last_eb_blk = ocfs2_dinode_get_last_eb_blk,
+ .update_clusters = ocfs2_dinode_update_clusters,
+ .sanity_check = ocfs2_dinode_sanity_check,
+};
+
+static struct ocfs2_extent_tree*
+ ocfs2_new_extent_tree(struct buffer_head *bh,
+ enum ocfs2_extent_tree_type et_type)
+{
+ struct ocfs2_extent_tree *et;
+
+ et = kzalloc(sizeof(*et), GFP_NOFS);
+ if (!et)
+ return NULL;
+
+ et->type = et_type;
+ get_bh(bh);
+ et->root_bh = bh;
+
+ /* current we only support dinode extent. */
+ BUG_ON(et->type != OCFS2_DINODE_EXTENT);
+ if (et_type == OCFS2_DINODE_EXTENT) {
+ et->root_el = &((struct ocfs2_dinode *)bh->b_data)->id2.i_list;
+ et->eops = &ocfs2_dinode_et_ops;
+ }
+
+ return et;
+}
+
+static void ocfs2_free_extent_tree(struct ocfs2_extent_tree *et)
+{
+ if (et) {
+ brelse(et->root_bh);
+ kfree(et);
+ }
+}
+
+static inline void ocfs2_set_last_eb_blk(struct ocfs2_extent_tree *et,
+ u64 new_last_eb_blk)
+{
+ et->eops->set_last_eb_blk(et, new_last_eb_blk);
+}
+
+static inline u64 ocfs2_get_last_eb_blk(struct ocfs2_extent_tree *et)
+{
+ return et->eops->get_last_eb_blk(et);
+}
+
+static inline void ocfs2_update_clusters(struct inode *inode,
+ struct ocfs2_extent_tree *et,
+ u32 clusters)
+{
+ et->eops->update_clusters(inode, et, clusters);
+}
+
static void ocfs2_free_truncate_context(struct ocfs2_truncate_context *tc);
static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt,
struct ocfs2_extent_block *eb);
return path;
}
-/*
- * Allocate and initialize a new path based on a disk inode tree.
- */
-static struct ocfs2_path *ocfs2_new_inode_path(struct buffer_head *di_bh)
-{
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
- struct ocfs2_extent_list *el = &di->id2.i_list;
-
- return ocfs2_new_path(di_bh, el);
-}
-
/*
* Convenience function to journal all components in a path.
*/
*/
int ocfs2_num_free_extents(struct ocfs2_super *osb,
struct inode *inode,
- struct buffer_head *bh)
+ struct buffer_head *root_bh,
+ enum ocfs2_extent_tree_type type)
{
int retval;
- struct ocfs2_extent_list *el;
+ struct ocfs2_extent_list *el = NULL;
struct ocfs2_extent_block *eb;
struct buffer_head *eb_bh = NULL;
- struct ocfs2_dinode *fe = (struct ocfs2_dinode *)bh->b_data;
+ u64 last_eb_blk = 0;
mlog_entry_void();
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe);
- retval = -EIO;
- goto bail;
+ if (type == OCFS2_DINODE_EXTENT) {
+ struct ocfs2_dinode *fe =
+ (struct ocfs2_dinode *)root_bh->b_data;
+ if (!OCFS2_IS_VALID_DINODE(fe)) {
+ OCFS2_RO_ON_INVALID_DINODE(inode->i_sb, fe);
+ retval = -EIO;
+ goto bail;
+ }
+
+ if (fe->i_last_eb_blk)
+ last_eb_blk = le64_to_cpu(fe->i_last_eb_blk);
+ el = &fe->id2.i_list;
}
- if (fe->i_last_eb_blk) {
- retval = ocfs2_read_block(osb, le64_to_cpu(fe->i_last_eb_blk),
+ if (last_eb_blk) {
+ retval = ocfs2_read_block(osb, last_eb_blk,
&eb_bh, OCFS2_BH_CACHED, inode);
if (retval < 0) {
mlog_errno(retval);
}
eb = (struct ocfs2_extent_block *) eb_bh->b_data;
el = &eb->h_list;
- } else
- el = &fe->id2.i_list;
+ }
BUG_ON(el->l_tree_depth != 0);
static int ocfs2_add_branch(struct ocfs2_super *osb,
handle_t *handle,
struct inode *inode,
- struct buffer_head *fe_bh,
+ struct ocfs2_extent_tree *et,
struct buffer_head *eb_bh,
struct buffer_head **last_eb_bh,
struct ocfs2_alloc_context *meta_ac)
u64 next_blkno, new_last_eb_blk;
struct buffer_head *bh;
struct buffer_head **new_eb_bhs = NULL;
- struct ocfs2_dinode *fe;
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *eb_el;
struct ocfs2_extent_list *el;
BUG_ON(!last_eb_bh || !*last_eb_bh);
- fe = (struct ocfs2_dinode *) fe_bh->b_data;
-
if (eb_bh) {
eb = (struct ocfs2_extent_block *) eb_bh->b_data;
el = &eb->h_list;
} else
- el = &fe->id2.i_list;
+ el = et->root_el;
/* we never add a branch to a leaf. */
BUG_ON(!el->l_tree_depth);
mlog_errno(status);
goto bail;
}
- status = ocfs2_journal_access(handle, inode, fe_bh,
+ status = ocfs2_journal_access(handle, inode, et->root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
}
/* Link the new branch into the rest of the tree (el will
- * either be on the fe, or the extent block passed in. */
+ * either be on the root_bh, or the extent block passed in. */
i = le16_to_cpu(el->l_next_free_rec);
el->l_recs[i].e_blkno = cpu_to_le64(next_blkno);
el->l_recs[i].e_cpos = cpu_to_le32(new_cpos);
/* fe needs a new last extent block pointer, as does the
* next_leaf on the previously last-extent-block. */
- fe->i_last_eb_blk = cpu_to_le64(new_last_eb_blk);
+ ocfs2_set_last_eb_blk(et, new_last_eb_blk);
eb = (struct ocfs2_extent_block *) (*last_eb_bh)->b_data;
eb->h_next_leaf_blk = cpu_to_le64(new_last_eb_blk);
status = ocfs2_journal_dirty(handle, *last_eb_bh);
if (status < 0)
mlog_errno(status);
- status = ocfs2_journal_dirty(handle, fe_bh);
+ status = ocfs2_journal_dirty(handle, et->root_bh);
if (status < 0)
mlog_errno(status);
if (eb_bh) {
static int ocfs2_shift_tree_depth(struct ocfs2_super *osb,
handle_t *handle,
struct inode *inode,
- struct buffer_head *fe_bh,
+ struct ocfs2_extent_tree *et,
struct ocfs2_alloc_context *meta_ac,
struct buffer_head **ret_new_eb_bh)
{
int status, i;
u32 new_clusters;
struct buffer_head *new_eb_bh = NULL;
- struct ocfs2_dinode *fe;
struct ocfs2_extent_block *eb;
- struct ocfs2_extent_list *fe_el;
+ struct ocfs2_extent_list *root_el;
struct ocfs2_extent_list *eb_el;
mlog_entry_void();
}
eb_el = &eb->h_list;
- fe = (struct ocfs2_dinode *) fe_bh->b_data;
- fe_el = &fe->id2.i_list;
+ root_el = et->root_el;
status = ocfs2_journal_access(handle, inode, new_eb_bh,
OCFS2_JOURNAL_ACCESS_CREATE);
goto bail;
}
- /* copy the fe data into the new extent block */
- eb_el->l_tree_depth = fe_el->l_tree_depth;
- eb_el->l_next_free_rec = fe_el->l_next_free_rec;
- for(i = 0; i < le16_to_cpu(fe_el->l_next_free_rec); i++)
- eb_el->l_recs[i] = fe_el->l_recs[i];
+ /* copy the root extent list data into the new extent block */
+ eb_el->l_tree_depth = root_el->l_tree_depth;
+ eb_el->l_next_free_rec = root_el->l_next_free_rec;
+ for (i = 0; i < le16_to_cpu(root_el->l_next_free_rec); i++)
+ eb_el->l_recs[i] = root_el->l_recs[i];
status = ocfs2_journal_dirty(handle, new_eb_bh);
if (status < 0) {
goto bail;
}
- status = ocfs2_journal_access(handle, inode, fe_bh,
+ status = ocfs2_journal_access(handle, inode, et->root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (status < 0) {
mlog_errno(status);
new_clusters = ocfs2_sum_rightmost_rec(eb_el);
- /* update fe now */
- le16_add_cpu(&fe_el->l_tree_depth, 1);
- fe_el->l_recs[0].e_cpos = 0;
- fe_el->l_recs[0].e_blkno = eb->h_blkno;
- fe_el->l_recs[0].e_int_clusters = cpu_to_le32(new_clusters);
- for(i = 1; i < le16_to_cpu(fe_el->l_next_free_rec); i++)
- memset(&fe_el->l_recs[i], 0, sizeof(struct ocfs2_extent_rec));
- fe_el->l_next_free_rec = cpu_to_le16(1);
+ /* update root_bh now */
+ le16_add_cpu(&root_el->l_tree_depth, 1);
+ root_el->l_recs[0].e_cpos = 0;
+ root_el->l_recs[0].e_blkno = eb->h_blkno;
+ root_el->l_recs[0].e_int_clusters = cpu_to_le32(new_clusters);
+ for (i = 1; i < le16_to_cpu(root_el->l_next_free_rec); i++)
+ memset(&root_el->l_recs[i], 0, sizeof(struct ocfs2_extent_rec));
+ root_el->l_next_free_rec = cpu_to_le16(1);
/* If this is our 1st tree depth shift, then last_eb_blk
* becomes the allocated extent block */
- if (fe_el->l_tree_depth == cpu_to_le16(1))
- fe->i_last_eb_blk = eb->h_blkno;
+ if (root_el->l_tree_depth == cpu_to_le16(1))
+ ocfs2_set_last_eb_blk(et, le64_to_cpu(eb->h_blkno));
- status = ocfs2_journal_dirty(handle, fe_bh);
+ status = ocfs2_journal_dirty(handle, et->root_bh);
if (status < 0) {
mlog_errno(status);
goto bail;
* 1) a lowest extent block is found, then we pass it back in
* *lowest_eb_bh and return '0'
*
- * 2) the search fails to find anything, but the dinode has room. We
+ * 2) the search fails to find anything, but the root_el has room. We
* pass NULL back in *lowest_eb_bh, but still return '0'
*
- * 3) the search fails to find anything AND the dinode is full, in
+ * 3) the search fails to find anything AND the root_el is full, in
* which case we return > 0
*
* return status < 0 indicates an error.
*/
static int ocfs2_find_branch_target(struct ocfs2_super *osb,
struct inode *inode,
- struct buffer_head *fe_bh,
+ struct ocfs2_extent_tree *et,
struct buffer_head **target_bh)
{
int status = 0, i;
u64 blkno;
- struct ocfs2_dinode *fe;
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
struct buffer_head *bh = NULL;
*target_bh = NULL;
- fe = (struct ocfs2_dinode *) fe_bh->b_data;
- el = &fe->id2.i_list;
+ el = et->root_el;
while(le16_to_cpu(el->l_tree_depth) > 1) {
if (le16_to_cpu(el->l_next_free_rec) == 0) {
/* If we didn't find one and the fe doesn't have any room,
* then return '1' */
- if (!lowest_bh
- && (fe->id2.i_list.l_next_free_rec == fe->id2.i_list.l_count))
+ el = et->root_el;
+ if (!lowest_bh && (el->l_next_free_rec == el->l_count))
status = 1;
*target_bh = lowest_bh;
* *last_eb_bh will be updated by ocfs2_add_branch().
*/
static int ocfs2_grow_tree(struct inode *inode, handle_t *handle,
- struct buffer_head *di_bh, int *final_depth,
+ struct ocfs2_extent_tree *et, int *final_depth,
struct buffer_head **last_eb_bh,
struct ocfs2_alloc_context *meta_ac)
{
int ret, shift;
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
- int depth = le16_to_cpu(di->id2.i_list.l_tree_depth);
+ struct ocfs2_extent_list *el = et->root_el;
+ int depth = le16_to_cpu(el->l_tree_depth);
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
struct buffer_head *bh = NULL;
BUG_ON(meta_ac == NULL);
- shift = ocfs2_find_branch_target(osb, inode, di_bh, &bh);
+ shift = ocfs2_find_branch_target(osb, inode, et, &bh);
if (shift < 0) {
ret = shift;
mlog_errno(ret);
/* ocfs2_shift_tree_depth will return us a buffer with
* the new extent block (so we can pass that to
* ocfs2_add_branch). */
- ret = ocfs2_shift_tree_depth(osb, handle, inode, di_bh,
+ ret = ocfs2_shift_tree_depth(osb, handle, inode, et,
meta_ac, &bh);
if (ret < 0) {
mlog_errno(ret);
/* call ocfs2_add_branch to add the final part of the tree with
* the new data. */
mlog(0, "add branch. bh = %p\n", bh);
- ret = ocfs2_add_branch(osb, handle, inode, di_bh, bh, last_eb_bh,
+ ret = ocfs2_add_branch(osb, handle, inode, et, bh, last_eb_bh,
meta_ac);
if (ret < 0) {
mlog_errno(ret);
struct ocfs2_path *right_path,
int subtree_index,
struct ocfs2_cached_dealloc_ctxt *dealloc,
- int *deleted)
+ int *deleted,
+ struct ocfs2_extent_tree *et)
{
int ret, i, del_right_subtree = 0, right_has_empty = 0;
- struct buffer_head *root_bh, *di_bh = path_root_bh(right_path);
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct buffer_head *root_bh, *et_root_bh = path_root_bh(right_path);
struct ocfs2_extent_list *right_leaf_el, *left_leaf_el;
struct ocfs2_extent_block *eb;
* We have to update i_last_eb_blk during the meta
* data delete.
*/
- ret = ocfs2_journal_access(handle, inode, di_bh,
+ ret = ocfs2_journal_access(handle, inode, et_root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
ocfs2_update_edge_lengths(inode, handle, left_path);
eb = (struct ocfs2_extent_block *)path_leaf_bh(left_path)->b_data;
- di->i_last_eb_blk = eb->h_blkno;
+ ocfs2_set_last_eb_blk(et, le64_to_cpu(eb->h_blkno));
/*
* Removal of the extent in the left leaf was skipped
if (right_has_empty)
ocfs2_remove_empty_extent(left_leaf_el);
- ret = ocfs2_journal_dirty(handle, di_bh);
+ ret = ocfs2_journal_dirty(handle, et_root_bh);
if (ret)
mlog_errno(ret);
handle_t *handle, int orig_credits,
struct ocfs2_path *path,
struct ocfs2_cached_dealloc_ctxt *dealloc,
- struct ocfs2_path **empty_extent_path)
+ struct ocfs2_path **empty_extent_path,
+ struct ocfs2_extent_tree *et)
{
int ret, subtree_root, deleted;
u32 right_cpos;
ret = ocfs2_rotate_subtree_left(inode, handle, left_path,
right_path, subtree_root,
- dealloc, &deleted);
+ dealloc, &deleted, et);
if (ret == -EAGAIN) {
/*
* The rotation has to temporarily stop due to
}
static int ocfs2_remove_rightmost_path(struct inode *inode, handle_t *handle,
- struct ocfs2_path *path,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
+ struct ocfs2_path *path,
+ struct ocfs2_cached_dealloc_ctxt *dealloc,
+ struct ocfs2_extent_tree *et)
{
int ret, subtree_index;
u32 cpos;
struct ocfs2_path *left_path = NULL;
- struct ocfs2_dinode *di;
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
- /*
- * XXX: This code assumes that the root is an inode, which is
- * true for now but may change as tree code gets generic.
- */
- di = (struct ocfs2_dinode *)path_root_bh(path)->b_data;
- if (!OCFS2_IS_VALID_DINODE(di)) {
- ret = -EIO;
- ocfs2_error(inode->i_sb,
- "Inode %llu has invalid path root",
- (unsigned long long)OCFS2_I(inode)->ip_blkno);
- goto out;
- }
+ ret = et->eops->sanity_check(inode, et);
+ if (ret)
+ goto out;
/*
* There's two ways we handle this depending on
* whether path is the only existing one.
ocfs2_update_edge_lengths(inode, handle, left_path);
eb = (struct ocfs2_extent_block *)path_leaf_bh(left_path)->b_data;
- di->i_last_eb_blk = eb->h_blkno;
+ ocfs2_set_last_eb_blk(et, le64_to_cpu(eb->h_blkno));
} else {
/*
* 'path' is also the leftmost path which
*/
ocfs2_unlink_path(inode, handle, dealloc, path, 1);
- el = &di->id2.i_list;
+ el = et->root_el;
el->l_tree_depth = 0;
el->l_next_free_rec = 0;
memset(&el->l_recs[0], 0, sizeof(struct ocfs2_extent_rec));
- di->i_last_eb_blk = 0;
+ ocfs2_set_last_eb_blk(et, 0);
}
ocfs2_journal_dirty(handle, path_root_bh(path));
*/
static int ocfs2_rotate_tree_left(struct inode *inode, handle_t *handle,
struct ocfs2_path *path,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
+ struct ocfs2_cached_dealloc_ctxt *dealloc,
+ struct ocfs2_extent_tree *et)
{
int ret, orig_credits = handle->h_buffer_credits;
struct ocfs2_path *tmp_path = NULL, *restart_path = NULL;
if (path->p_tree_depth == 0) {
rightmost_no_delete:
/*
- * In-inode extents. This is trivially handled, so do
+ * Inline extents. This is trivially handled, so do
* it up front.
*/
ret = ocfs2_rotate_rightmost_leaf_left(inode, handle,
*/
ret = ocfs2_remove_rightmost_path(inode, handle, path,
- dealloc);
+ dealloc, et);
if (ret)
mlog_errno(ret);
goto out;
*/
try_rotate:
ret = __ocfs2_rotate_tree_left(inode, handle, orig_credits, path,
- dealloc, &restart_path);
+ dealloc, &restart_path, et);
if (ret && ret != -EAGAIN) {
mlog_errno(ret);
goto out;
ret = __ocfs2_rotate_tree_left(inode, handle, orig_credits,
tmp_path, dealloc,
- &restart_path);
+ &restart_path, et);
if (ret && ret != -EAGAIN) {
mlog_errno(ret);
goto out;
handle_t *handle,
struct ocfs2_extent_rec *split_rec,
struct ocfs2_cached_dealloc_ctxt *dealloc,
+ struct ocfs2_extent_tree *et,
int index)
{
int ret, i, subtree_index = 0, has_empty_extent = 0;
le16_to_cpu(el->l_next_free_rec) == 1) {
ret = ocfs2_remove_rightmost_path(inode, handle,
- right_path, dealloc);
+ right_path,
+ dealloc, et);
if (ret) {
mlog_errno(ret);
goto out;
int split_index,
struct ocfs2_extent_rec *split_rec,
struct ocfs2_cached_dealloc_ctxt *dealloc,
- struct ocfs2_merge_ctxt *ctxt)
+ struct ocfs2_merge_ctxt *ctxt,
+ struct ocfs2_extent_tree *et)
{
int ret = 0;
* illegal.
*/
ret = ocfs2_rotate_tree_left(inode, handle, path,
- dealloc);
+ dealloc, et);
if (ret) {
mlog_errno(ret);
goto out;
BUG_ON(!ocfs2_is_empty_extent(&el->l_recs[0]));
/* The merge left us with an empty extent, remove it. */
- ret = ocfs2_rotate_tree_left(inode, handle, path, dealloc);
+ ret = ocfs2_rotate_tree_left(inode, handle, path,
+ dealloc, et);
if (ret) {
mlog_errno(ret);
goto out;
*/
ret = ocfs2_merge_rec_left(inode, path,
handle, rec,
- dealloc,
+ dealloc, et,
split_index);
if (ret) {
}
ret = ocfs2_rotate_tree_left(inode, handle, path,
- dealloc);
+ dealloc, et);
/*
* Error from this last rotate is not critical, so
* print but don't bubble it up.
ret = ocfs2_merge_rec_left(inode,
path,
handle, split_rec,
- dealloc,
+ dealloc, et,
split_index);
if (ret) {
mlog_errno(ret);
* our leaf. Try to rotate it away.
*/
ret = ocfs2_rotate_tree_left(inode, handle, path,
- dealloc);
+ dealloc, et);
if (ret)
mlog_errno(ret);
ret = 0;
ocfs2_rotate_leaf(el, insert_rec);
}
-static inline void ocfs2_update_dinode_clusters(struct inode *inode,
- struct ocfs2_dinode *di,
- u32 clusters)
-{
- le32_add_cpu(&di->i_clusters, clusters);
- spin_lock(&OCFS2_I(inode)->ip_lock);
- OCFS2_I(inode)->ip_clusters = le32_to_cpu(di->i_clusters);
- spin_unlock(&OCFS2_I(inode)->ip_lock);
-}
-
static void ocfs2_adjust_rightmost_records(struct inode *inode,
handle_t *handle,
struct ocfs2_path *path,
}
/*
- * This function only does inserts on an allocation b-tree. For dinode
- * lists, ocfs2_insert_at_leaf() is called directly.
+ * This function only does inserts on an allocation b-tree. For tree
+ * depth = 0, ocfs2_insert_at_leaf() is called directly.
*
* right_path is the path we want to do the actual insert
* in. left_path should only be passed in if we need to update that
static int ocfs2_do_insert_extent(struct inode *inode,
handle_t *handle,
- struct buffer_head *di_bh,
+ struct ocfs2_extent_tree *et,
struct ocfs2_extent_rec *insert_rec,
struct ocfs2_insert_type *type)
{
u32 cpos;
struct ocfs2_path *right_path = NULL;
struct ocfs2_path *left_path = NULL;
- struct ocfs2_dinode *di;
struct ocfs2_extent_list *el;
- di = (struct ocfs2_dinode *) di_bh->b_data;
- el = &di->id2.i_list;
+ el = et->root_el;
- ret = ocfs2_journal_access(handle, inode, di_bh,
+ ret = ocfs2_journal_access(handle, inode, et->root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out_update_clusters;
}
- right_path = ocfs2_new_inode_path(di_bh);
+ right_path = ocfs2_new_path(et->root_bh, et->root_el);
if (!right_path) {
ret = -ENOMEM;
mlog_errno(ret);
* ocfs2_rotate_tree_right() might have extended the
* transaction without re-journaling our tree root.
*/
- ret = ocfs2_journal_access(handle, inode, di_bh,
+ ret = ocfs2_journal_access(handle, inode, et->root_bh,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
out_update_clusters:
if (type->ins_split == SPLIT_NONE)
- ocfs2_update_dinode_clusters(inode, di,
- le16_to_cpu(insert_rec->e_leaf_clusters));
+ ocfs2_update_clusters(inode, et,
+ le16_to_cpu(insert_rec->e_leaf_clusters));
- ret = ocfs2_journal_dirty(handle, di_bh);
+ ret = ocfs2_journal_dirty(handle, et->root_bh);
if (ret)
mlog_errno(ret);
* ocfs2_figure_appending_type() will figure out whether we'll have to
* insert at the tail of the rightmost leaf.
*
- * This should also work against the dinode list for tree's with 0
- * depth. If we consider the dinode list to be the rightmost leaf node
+ * This should also work against the root extent list for tree's with 0
+ * depth. If we consider the root extent list to be the rightmost leaf node
* then the logic here makes sense.
*/
static void ocfs2_figure_appending_type(struct ocfs2_insert_type *insert,
* structure.
*/
static int ocfs2_figure_insert_type(struct inode *inode,
- struct buffer_head *di_bh,
+ struct ocfs2_extent_tree *et,
struct buffer_head **last_eb_bh,
struct ocfs2_extent_rec *insert_rec,
int *free_records,
struct ocfs2_insert_type *insert)
{
int ret;
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
struct ocfs2_path *path = NULL;
insert->ins_split = SPLIT_NONE;
- el = &di->id2.i_list;
+ el = et->root_el;
insert->ins_tree_depth = le16_to_cpu(el->l_tree_depth);
if (el->l_tree_depth) {
* may want it later.
*/
ret = ocfs2_read_block(OCFS2_SB(inode->i_sb),
- le64_to_cpu(di->i_last_eb_blk), &bh,
+ ocfs2_get_last_eb_blk(et), &bh,
OCFS2_BH_CACHED, inode);
if (ret) {
mlog_exit(ret);
return 0;
}
- path = ocfs2_new_inode_path(di_bh);
+ path = ocfs2_new_path(et->root_bh, et->root_el);
if (!path) {
ret = -ENOMEM;
mlog_errno(ret);
* the case that we're doing a tail append, so maybe we can
* take advantage of that information somehow.
*/
- if (le64_to_cpu(di->i_last_eb_blk) == path_leaf_bh(path)->b_blocknr) {
+ if (ocfs2_get_last_eb_blk(et) ==
+ path_leaf_bh(path)->b_blocknr) {
/*
* Ok, ocfs2_find_path() returned us the rightmost
* tree path. This might be an appending insert. There are
int ocfs2_insert_extent(struct ocfs2_super *osb,
handle_t *handle,
struct inode *inode,
- struct buffer_head *fe_bh,
+ struct buffer_head *root_bh,
u32 cpos,
u64 start_blk,
u32 new_clusters,
u8 flags,
- struct ocfs2_alloc_context *meta_ac)
+ struct ocfs2_alloc_context *meta_ac,
+ enum ocfs2_extent_tree_type et_type)
{
int status;
int uninitialized_var(free_records);
struct buffer_head *last_eb_bh = NULL;
struct ocfs2_insert_type insert = {0, };
struct ocfs2_extent_rec rec;
+ struct ocfs2_extent_tree *et = NULL;
BUG_ON(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
+ et = ocfs2_new_extent_tree(root_bh, et_type);
+ if (!et) {
+ status = -ENOMEM;
+ mlog_errno(status);
+ goto bail;
+ }
+
mlog(0, "add %u clusters at position %u to inode %llu\n",
new_clusters, cpos, (unsigned long long)OCFS2_I(inode)->ip_blkno);
rec.e_leaf_clusters = cpu_to_le16(new_clusters);
rec.e_flags = flags;
- status = ocfs2_figure_insert_type(inode, fe_bh, &last_eb_bh, &rec,
+ status = ocfs2_figure_insert_type(inode, et, &last_eb_bh, &rec,
&free_records, &insert);
if (status < 0) {
mlog_errno(status);
free_records, insert.ins_tree_depth);
if (insert.ins_contig == CONTIG_NONE && free_records == 0) {
- status = ocfs2_grow_tree(inode, handle, fe_bh,
+ status = ocfs2_grow_tree(inode, handle, et,
&insert.ins_tree_depth, &last_eb_bh,
meta_ac);
if (status) {
}
/* Finally, we can add clusters. This might rotate the tree for us. */
- status = ocfs2_do_insert_extent(inode, handle, fe_bh, &rec, &insert);
+ status = ocfs2_do_insert_extent(inode, handle, et, &rec, &insert);
if (status < 0)
mlog_errno(status);
- else
+ else if (et->type == OCFS2_DINODE_EXTENT)
ocfs2_extent_map_insert_rec(inode, &rec);
bail:
if (last_eb_bh)
brelse(last_eb_bh);
+ if (et)
+ ocfs2_free_extent_tree(et);
mlog_exit(status);
return status;
}
static int ocfs2_split_and_insert(struct inode *inode,
handle_t *handle,
struct ocfs2_path *path,
- struct buffer_head *di_bh,
+ struct ocfs2_extent_tree *et,
struct buffer_head **last_eb_bh,
int split_index,
struct ocfs2_extent_rec *orig_split_rec,
struct ocfs2_extent_rec split_rec = *orig_split_rec;
struct ocfs2_insert_type insert;
struct ocfs2_extent_block *eb;
- struct ocfs2_dinode *di;
leftright:
/*
*/
rec = path_leaf_el(path)->l_recs[split_index];
- di = (struct ocfs2_dinode *)di_bh->b_data;
- rightmost_el = &di->id2.i_list;
+ rightmost_el = et->root_el;
depth = le16_to_cpu(rightmost_el->l_tree_depth);
if (depth) {
if (le16_to_cpu(rightmost_el->l_next_free_rec) ==
le16_to_cpu(rightmost_el->l_count)) {
- ret = ocfs2_grow_tree(inode, handle, di_bh, &depth, last_eb_bh,
- meta_ac);
+ ret = ocfs2_grow_tree(inode, handle, et,
+ &depth, last_eb_bh, meta_ac);
if (ret) {
mlog_errno(ret);
goto out;
do_leftright = 1;
}
- ret = ocfs2_do_insert_extent(inode, handle, di_bh, &split_rec,
- &insert);
+ ret = ocfs2_do_insert_extent(inode, handle, et, &split_rec, &insert);
if (ret) {
mlog_errno(ret);
goto out;
* of the tree is required. All other cases will degrade into a less
* optimal tree layout.
*
- * last_eb_bh should be the rightmost leaf block for any inode with a
- * btree. Since a split may grow the tree or a merge might shrink it, the caller cannot trust the contents of that buffer after this call.
+ * last_eb_bh should be the rightmost leaf block for any extent
+ * btree. Since a split may grow the tree or a merge might shrink it,
+ * the caller cannot trust the contents of that buffer after this call.
*
* This code is optimized for readability - several passes might be
* made over certain portions of the tree. All of those blocks will
* extra overhead is not expressed in terms of disk reads.
*/
static int __ocfs2_mark_extent_written(struct inode *inode,
- struct buffer_head *di_bh,
+ struct ocfs2_extent_tree *et,
handle_t *handle,
struct ocfs2_path *path,
int split_index,
*/
if (path->p_tree_depth) {
struct ocfs2_extent_block *eb;
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
ret = ocfs2_read_block(OCFS2_SB(inode->i_sb),
- le64_to_cpu(di->i_last_eb_blk),
+ ocfs2_get_last_eb_blk(et),
&last_eb_bh, OCFS2_BH_CACHED, inode);
if (ret) {
mlog_exit(ret);
if (ctxt.c_split_covers_rec)
el->l_recs[split_index] = *split_rec;
else
- ret = ocfs2_split_and_insert(inode, handle, path, di_bh,
+ ret = ocfs2_split_and_insert(inode, handle, path, et,
&last_eb_bh, split_index,
split_rec, meta_ac);
if (ret)
} else {
ret = ocfs2_try_to_merge_extent(inode, handle, path,
split_index, split_rec,
- dealloc, &ctxt);
+ dealloc, &ctxt, et);
if (ret)
mlog_errno(ret);
}
*
* The caller is responsible for passing down meta_ac if we'll need it.
*/
-int ocfs2_mark_extent_written(struct inode *inode, struct buffer_head *di_bh,
+int ocfs2_mark_extent_written(struct inode *inode, struct buffer_head *root_bh,
handle_t *handle, u32 cpos, u32 len, u32 phys,
struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
+ struct ocfs2_cached_dealloc_ctxt *dealloc,
+ enum ocfs2_extent_tree_type et_type)
{
int ret, index;
u64 start_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys);
struct ocfs2_extent_rec split_rec;
struct ocfs2_path *left_path = NULL;
struct ocfs2_extent_list *el;
+ struct ocfs2_extent_tree *et = NULL;
mlog(0, "Inode %lu cpos %u, len %u, phys %u (%llu)\n",
inode->i_ino, cpos, len, phys, (unsigned long long)start_blkno);
goto out;
}
+ et = ocfs2_new_extent_tree(root_bh, et_type);
+ if (!et) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
+
/*
* XXX: This should be fixed up so that we just re-insert the
* next extent records.
*/
- ocfs2_extent_map_trunc(inode, 0);
+ if (et_type == OCFS2_DINODE_EXTENT)
+ ocfs2_extent_map_trunc(inode, 0);
- left_path = ocfs2_new_inode_path(di_bh);
+ left_path = ocfs2_new_path(et->root_bh, et->root_el);
if (!left_path) {
ret = -ENOMEM;
mlog_errno(ret);
split_rec.e_flags = path_leaf_el(left_path)->l_recs[index].e_flags;
split_rec.e_flags &= ~OCFS2_EXT_UNWRITTEN;
- ret = __ocfs2_mark_extent_written(inode, di_bh, handle, left_path,
- index, &split_rec, meta_ac, dealloc);
+ ret = __ocfs2_mark_extent_written(inode, et, handle, left_path,
+ index, &split_rec, meta_ac,
+ dealloc);
if (ret)
mlog_errno(ret);
out:
ocfs2_free_path(left_path);
+ if (et)
+ ocfs2_free_extent_tree(et);
return ret;
}
-static int ocfs2_split_tree(struct inode *inode, struct buffer_head *di_bh,
+static int ocfs2_split_tree(struct inode *inode, struct ocfs2_extent_tree *et,
handle_t *handle, struct ocfs2_path *path,
int index, u32 new_range,
struct ocfs2_alloc_context *meta_ac)
{
int ret, depth, credits = handle->h_buffer_credits;
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
struct buffer_head *last_eb_bh = NULL;
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *rightmost_el, *el;
depth = path->p_tree_depth;
if (depth > 0) {
ret = ocfs2_read_block(OCFS2_SB(inode->i_sb),
- le64_to_cpu(di->i_last_eb_blk),
+ ocfs2_get_last_eb_blk(et),
&last_eb_bh, OCFS2_BH_CACHED, inode);
if (ret < 0) {
mlog_errno(ret);
rightmost_el = path_leaf_el(path);
credits += path->p_tree_depth +
- ocfs2_extend_meta_needed(&di->id2.i_list);
+ ocfs2_extend_meta_needed(et->root_el);
ret = ocfs2_extend_trans(handle, credits);
if (ret) {
mlog_errno(ret);
if (le16_to_cpu(rightmost_el->l_next_free_rec) ==
le16_to_cpu(rightmost_el->l_count)) {
- ret = ocfs2_grow_tree(inode, handle, di_bh, &depth, &last_eb_bh,
+ ret = ocfs2_grow_tree(inode, handle, et, &depth, &last_eb_bh,
meta_ac);
if (ret) {
mlog_errno(ret);
insert.ins_split = SPLIT_RIGHT;
insert.ins_tree_depth = depth;
- ret = ocfs2_do_insert_extent(inode, handle, di_bh, &split_rec, &insert);
+ ret = ocfs2_do_insert_extent(inode, handle, et, &split_rec, &insert);
if (ret)
mlog_errno(ret);
static int ocfs2_truncate_rec(struct inode *inode, handle_t *handle,
struct ocfs2_path *path, int index,
struct ocfs2_cached_dealloc_ctxt *dealloc,
- u32 cpos, u32 len)
+ u32 cpos, u32 len,
+ struct ocfs2_extent_tree *et)
{
int ret;
u32 left_cpos, rec_range, trunc_range;
struct ocfs2_extent_block *eb;
if (ocfs2_is_empty_extent(&el->l_recs[0]) && index > 0) {
- ret = ocfs2_rotate_tree_left(inode, handle, path, dealloc);
+ ret = ocfs2_rotate_tree_left(inode, handle, path, dealloc, et);
if (ret) {
mlog_errno(ret);
goto out;
ocfs2_journal_dirty(handle, path_leaf_bh(path));
- ret = ocfs2_rotate_tree_left(inode, handle, path, dealloc);
+ ret = ocfs2_rotate_tree_left(inode, handle, path, dealloc, et);
if (ret) {
mlog_errno(ret);
goto out;
return ret;
}
-int ocfs2_remove_extent(struct inode *inode, struct buffer_head *di_bh,
+int ocfs2_remove_extent(struct inode *inode, struct buffer_head *root_bh,
u32 cpos, u32 len, handle_t *handle,
struct ocfs2_alloc_context *meta_ac,
- struct ocfs2_cached_dealloc_ctxt *dealloc)
+ struct ocfs2_cached_dealloc_ctxt *dealloc,
+ enum ocfs2_extent_tree_type et_type)
{
int ret, index;
u32 rec_range, trunc_range;
struct ocfs2_extent_rec *rec;
struct ocfs2_extent_list *el;
- struct ocfs2_path *path;
+ struct ocfs2_path *path = NULL;
+ struct ocfs2_extent_tree *et = NULL;
+
+ et = ocfs2_new_extent_tree(root_bh, et_type);
+ if (!et) {
+ ret = -ENOMEM;
+ mlog_errno(ret);
+ goto out;
+ }
ocfs2_extent_map_trunc(inode, 0);
- path = ocfs2_new_inode_path(di_bh);
+ path = ocfs2_new_path(et->root_bh, et->root_el);
if (!path) {
ret = -ENOMEM;
mlog_errno(ret);
if (le32_to_cpu(rec->e_cpos) == cpos || rec_range == trunc_range) {
ret = ocfs2_truncate_rec(inode, handle, path, index, dealloc,
- cpos, len);
+ cpos, len, et);
if (ret) {
mlog_errno(ret);
goto out;
}
} else {
- ret = ocfs2_split_tree(inode, di_bh, handle, path, index,
+ ret = ocfs2_split_tree(inode, et, handle, path, index,
trunc_range, meta_ac);
if (ret) {
mlog_errno(ret);
}
ret = ocfs2_truncate_rec(inode, handle, path, index, dealloc,
- cpos, len);
+ cpos, len, et);
if (ret) {
mlog_errno(ret);
goto out;
out:
ocfs2_free_path(path);
+ if (et)
+ ocfs2_free_extent_tree(et);
return ret;
}
* the in-inode data from our pages.
*/
ret = ocfs2_insert_extent(osb, handle, inode, di_bh,
- 0, block, 1, 0, NULL);
+ 0, block, 1, 0,
+ NULL, OCFS2_DINODE_EXTENT);
if (ret) {
mlog_errno(ret);
goto out_commit;
handle_t *handle = NULL;
struct inode *tl_inode = osb->osb_tl_inode;
struct ocfs2_path *path = NULL;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data;
mlog_entry_void();
new_highest_cpos = ocfs2_clusters_for_bytes(osb->sb,
i_size_read(inode));
- path = ocfs2_new_inode_path(fe_bh);
+ path = ocfs2_new_path(fe_bh, &di->id2.i_list);
if (!path) {
status = -ENOMEM;
mlog_errno(status);
git.openpandora.org / pandora-kernel.git / commitdiff