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authorMiao Xie <miaox@cn.fujitsu.com>2012-10-25 09:31:03 +0000
committerJosef Bacik <jbacik@fusionio.com>2012-12-11 13:31:37 -0500
commit25287e0a16c0ad068aa89ab01aea6c699b31ec12 (patch)
tree3badf12a84d2e2e437fc4b432ea41c197a9cbc99 /fs/btrfs/ordered-data.c
parent8ccf6f19b67f7e0921063cc309f4672a6afcb528 (diff)
downloadlinux-25287e0a16c0ad068aa89ab01aea6c699b31ec12.tar.bz2
Btrfs: make ordered operations be handled by multi-task
The process of the ordered operations is similar to the delalloc inode flush, so we handle them by flush workers. Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Diffstat (limited to 'fs/btrfs/ordered-data.c')
-rw-r--r--fs/btrfs/ordered-data.c46
1 files changed, 30 insertions, 16 deletions
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index 7772f02ba28e..ab2a3c0c540f 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -519,13 +519,17 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root, int delay_iput)
* extra check to make sure the ordered operation list really is empty
* before we return
*/
-void btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
+int btrfs_run_ordered_operations(struct btrfs_root *root, int wait)
{
struct btrfs_inode *btrfs_inode;
struct inode *inode;
struct list_head splice;
+ struct list_head works;
+ struct btrfs_delalloc_work *work, *next;
+ int ret = 0;
INIT_LIST_HEAD(&splice);
+ INIT_LIST_HEAD(&works);
mutex_lock(&root->fs_info->ordered_operations_mutex);
spin_lock(&root->fs_info->ordered_extent_lock);
@@ -533,6 +537,7 @@ again:
list_splice_init(&root->fs_info->ordered_operations, &splice);
while (!list_empty(&splice)) {
+
btrfs_inode = list_entry(splice.next, struct btrfs_inode,
ordered_operations);
@@ -549,15 +554,26 @@ again:
list_add_tail(&BTRFS_I(inode)->ordered_operations,
&root->fs_info->ordered_operations);
}
+
+ if (!inode)
+ continue;
spin_unlock(&root->fs_info->ordered_extent_lock);
- if (inode) {
- if (wait)
- btrfs_wait_ordered_range(inode, 0, (u64)-1);
- else
- filemap_flush(inode->i_mapping);
- btrfs_add_delayed_iput(inode);
+ work = btrfs_alloc_delalloc_work(inode, wait, 1);
+ if (!work) {
+ if (list_empty(&BTRFS_I(inode)->ordered_operations))
+ list_add_tail(&btrfs_inode->ordered_operations,
+ &splice);
+ spin_lock(&root->fs_info->ordered_extent_lock);
+ list_splice_tail(&splice,
+ &root->fs_info->ordered_operations);
+ spin_unlock(&root->fs_info->ordered_extent_lock);
+ ret = -ENOMEM;
+ goto out;
}
+ list_add_tail(&work->list, &works);
+ btrfs_queue_worker(&root->fs_info->flush_workers,
+ &work->work);
cond_resched();
spin_lock(&root->fs_info->ordered_extent_lock);
@@ -566,7 +582,13 @@ again:
goto again;
spin_unlock(&root->fs_info->ordered_extent_lock);
+out:
+ list_for_each_entry_safe(work, next, &works, list) {
+ list_del_init(&work->list);
+ btrfs_wait_and_free_delalloc_work(work);
+ }
mutex_unlock(&root->fs_info->ordered_operations_mutex);
+ return ret;
}
/*
@@ -934,15 +956,6 @@ void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans,
if (last_mod < root->fs_info->last_trans_committed)
return;
- /*
- * the transaction is already committing. Just start the IO and
- * don't bother with all of this list nonsense
- */
- if (trans && root->fs_info->running_transaction->blocked) {
- btrfs_wait_ordered_range(inode, 0, (u64)-1);
- return;
- }
-
spin_lock(&root->fs_info->ordered_extent_lock);
if (list_empty(&BTRFS_I(inode)->ordered_operations)) {
list_add_tail(&BTRFS_I(inode)->ordered_operations,
@@ -959,6 +972,7 @@ int __init ordered_data_init(void)
NULL);
if (!btrfs_ordered_extent_cache)
return -ENOMEM;
+
return 0;
}