refcount_set(&entry->refs, 1);
init_waitqueue_head(&entry->wait);
INIT_LIST_HEAD(&entry->list);
+ INIT_LIST_HEAD(&entry->log_list);
INIT_LIST_HEAD(&entry->root_extent_list);
INIT_LIST_HEAD(&entry->work_list);
init_completion(&entry->completion);
- trace_btrfs_ordered_extent_add(&inode->vfs_inode, entry);
+ trace_btrfs_ordered_extent_add(inode, entry);
spin_lock_irq(&tree->lock);
node = tree_insert(&tree->tree, file_offset,
* test_and_set_bit on a flag in the struct btrfs_ordered_extent is used
* to make sure this function only returns 1 once for a given ordered extent.
*/
-int btrfs_dec_test_ordered_pending(struct inode *inode,
+int btrfs_dec_test_ordered_pending(struct btrfs_inode *inode,
struct btrfs_ordered_extent **cached,
u64 file_offset, u64 io_size, int uptodate)
{
- struct btrfs_ordered_inode_tree *tree;
+ struct btrfs_ordered_inode_tree *tree = &inode->ordered_tree;
struct rb_node *node;
struct btrfs_ordered_extent *entry = NULL;
unsigned long flags;
int ret;
- tree = &BTRFS_I(inode)->ordered_tree;
spin_lock_irqsave(&tree->lock, flags);
if (cached && *cached) {
entry = *cached;
}
if (io_size > entry->bytes_left) {
- btrfs_crit(BTRFS_I(inode)->root->fs_info,
+ btrfs_crit(inode->root->fs_info,
"bad ordered accounting left %llu size %llu",
entry->bytes_left, io_size);
}
struct list_head *cur;
struct btrfs_ordered_sum *sum;
- trace_btrfs_ordered_extent_put(entry->inode, entry);
+ trace_btrfs_ordered_extent_put(BTRFS_I(entry->inode), entry);
if (refcount_dec_and_test(&entry->refs)) {
ASSERT(list_empty(&entry->root_extent_list));
+ ASSERT(list_empty(&entry->log_list));
ASSERT(RB_EMPTY_NODE(&entry->rb_node));
if (entry->inode)
btrfs_add_delayed_iput(entry->inode);
* remove an ordered extent from the tree. No references are dropped
* and waiters are woken up.
*/
-void btrfs_remove_ordered_extent(struct inode *inode,
+void btrfs_remove_ordered_extent(struct btrfs_inode *btrfs_inode,
struct btrfs_ordered_extent *entry)
{
- struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
struct btrfs_ordered_inode_tree *tree;
- struct btrfs_inode *btrfs_inode = BTRFS_I(inode);
struct btrfs_root *root = btrfs_inode->root;
+ struct btrfs_fs_info *fs_info = root->fs_info;
struct rb_node *node;
+ bool pending;
/* This is paired with btrfs_add_ordered_extent. */
spin_lock(&btrfs_inode->lock);
if (tree->last == node)
tree->last = NULL;
set_bit(BTRFS_ORDERED_COMPLETE, &entry->flags);
+ pending = test_and_clear_bit(BTRFS_ORDERED_PENDING, &entry->flags);
spin_unlock_irq(&tree->lock);
+ /*
+ * The current running transaction is waiting on us, we need to let it
+ * know that we're complete and wake it up.
+ */
+ if (pending) {
+ struct btrfs_transaction *trans;
+
+ /*
+ * The checks for trans are just a formality, it should be set,
+ * but if it isn't we don't want to deref/assert under the spin
+ * lock, so be nice and check if trans is set, but ASSERT() so
+ * if it isn't set a developer will notice.
+ */
+ spin_lock(&fs_info->trans_lock);
+ trans = fs_info->running_transaction;
+ if (trans)
+ refcount_inc(&trans->use_count);
+ spin_unlock(&fs_info->trans_lock);
+
+ ASSERT(trans);
+ if (trans) {
+ if (atomic_dec_and_test(&trans->pending_ordered))
+ wake_up(&trans->pending_wait);
+ btrfs_put_transaction(trans);
+ }
+ }
+
spin_lock(&root->ordered_extent_lock);
list_del_init(&entry->root_extent_list);
root->nr_ordered_extents--;
- trace_btrfs_ordered_extent_remove(inode, entry);
+ trace_btrfs_ordered_extent_remove(btrfs_inode, entry);
if (!root->nr_ordered_extents) {
spin_lock(&fs_info->ordered_root_lock);
struct btrfs_ordered_extent *ordered;
ordered = container_of(work, struct btrfs_ordered_extent, flush_work);
- btrfs_start_ordered_extent(ordered->inode, ordered, 1);
+ btrfs_start_ordered_extent(ordered, 1);
complete(&ordered->completion);
}
* in the extent, and it waits on the io completion code to insert
* metadata into the btree corresponding to the extent
*/
-void btrfs_start_ordered_extent(struct inode *inode,
- struct btrfs_ordered_extent *entry,
- int wait)
+void btrfs_start_ordered_extent(struct btrfs_ordered_extent *entry, int wait)
{
u64 start = entry->file_offset;
u64 end = start + entry->num_bytes - 1;
+ struct btrfs_inode *inode = BTRFS_I(entry->inode);
trace_btrfs_ordered_extent_start(inode, entry);
* for the flusher thread to find them
*/
if (!test_bit(BTRFS_ORDERED_DIRECT, &entry->flags))
- filemap_fdatawrite_range(inode->i_mapping, start, end);
+ filemap_fdatawrite_range(inode->vfs_inode.i_mapping, start, end);
if (wait) {
wait_event(entry->wait, test_bit(BTRFS_ORDERED_COMPLETE,
&entry->flags));
end = orig_end;
while (1) {
- ordered = btrfs_lookup_first_ordered_extent(inode, end);
+ ordered = btrfs_lookup_first_ordered_extent(BTRFS_I(inode), end);
if (!ordered)
break;
if (ordered->file_offset > orig_end) {
btrfs_put_ordered_extent(ordered);
break;
}
- btrfs_start_ordered_extent(inode, ordered, 1);
+ btrfs_start_ordered_extent(ordered, 1);
end = ordered->file_offset;
/*
* If the ordered extent had an error save the error but don't
return entry;
}
+/*
+ * Adds all ordered extents to the given list. The list ends up sorted by the
+ * file_offset of the ordered extents.
+ */
+void btrfs_get_ordered_extents_for_logging(struct btrfs_inode *inode,
+ struct list_head *list)
+{
+ struct btrfs_ordered_inode_tree *tree = &inode->ordered_tree;
+ struct rb_node *n;
+
+ ASSERT(inode_is_locked(&inode->vfs_inode));
+
+ spin_lock_irq(&tree->lock);
+ for (n = rb_first(&tree->tree); n; n = rb_next(n)) {
+ struct btrfs_ordered_extent *ordered;
+
+ ordered = rb_entry(n, struct btrfs_ordered_extent, rb_node);
+
+ if (test_bit(BTRFS_ORDERED_LOGGED, &ordered->flags))
+ continue;
+
+ ASSERT(list_empty(&ordered->log_list));
+ list_add_tail(&ordered->log_list, list);
+ refcount_inc(&ordered->refs);
+ }
+ spin_unlock_irq(&tree->lock);
+}
+
/*
* lookup and return any extent before 'file_offset'. NULL is returned
* if none is found
*/
struct btrfs_ordered_extent *
-btrfs_lookup_first_ordered_extent(struct inode *inode, u64 file_offset)
+btrfs_lookup_first_ordered_extent(struct btrfs_inode *inode, u64 file_offset)
{
struct btrfs_ordered_inode_tree *tree;
struct rb_node *node;
struct btrfs_ordered_extent *entry = NULL;
- tree = &BTRFS_I(inode)->ordered_tree;
+ tree = &inode->ordered_tree;
spin_lock_irq(&tree->lock);
node = tree_search(tree, file_offset);
if (!node)
* try to find a checksum. This is used because we allow pages to
* be reclaimed before their checksum is actually put into the btree
*/
-int btrfs_find_ordered_sum(struct inode *inode, u64 offset, u64 disk_bytenr,
- u8 *sum, int len)
+int btrfs_find_ordered_sum(struct btrfs_inode *inode, u64 offset,
+ u64 disk_bytenr, u8 *sum, int len)
{
- struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
+ struct btrfs_fs_info *fs_info = inode->root->fs_info;
struct btrfs_ordered_sum *ordered_sum;
struct btrfs_ordered_extent *ordered;
- struct btrfs_ordered_inode_tree *tree = &BTRFS_I(inode)->ordered_tree;
+ struct btrfs_ordered_inode_tree *tree = &inode->ordered_tree;
unsigned long num_sectors;
unsigned long i;
u32 sectorsize = btrfs_inode_sectorsize(inode);
+ const u8 blocksize_bits = inode->vfs_inode.i_sb->s_blocksize_bits;
const u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
int index = 0;
- ordered = btrfs_lookup_ordered_extent(BTRFS_I(inode), offset);
+ ordered = btrfs_lookup_ordered_extent(inode, offset);
if (!ordered)
return 0;
list_for_each_entry_reverse(ordered_sum, &ordered->list, list) {
if (disk_bytenr >= ordered_sum->bytenr &&
disk_bytenr < ordered_sum->bytenr + ordered_sum->len) {
- i = (disk_bytenr - ordered_sum->bytenr) >>
- inode->i_sb->s_blocksize_bits;
- num_sectors = ordered_sum->len >>
- inode->i_sb->s_blocksize_bits;
+ i = (disk_bytenr - ordered_sum->bytenr) >> blocksize_bits;
+ num_sectors = ordered_sum->len >> blocksize_bits;
num_sectors = min_t(int, len - index, num_sectors - i);
memcpy(sum + index, ordered_sum->sums + i * csum_size,
num_sectors * csum_size);
break;
}
unlock_extent_cached(&inode->io_tree, start, end, cachedp);
- btrfs_start_ordered_extent(&inode->vfs_inode, ordered, 1);
+ btrfs_start_ordered_extent(ordered, 1);
btrfs_put_ordered_extent(ordered);
}
}
projects / linux-2.6-microblaze.git / blobdiff