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Diffstat (limited to 'fs/btrfs/file.c')
-rw-r--r--fs/btrfs/file.c50
1 files changed, 44 insertions, 6 deletions
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index dc78954861b..9c9fb46ccd0 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -606,6 +606,7 @@ next_slot:
btrfs_set_key_type(&ins, BTRFS_EXTENT_DATA_KEY);
btrfs_release_path(root, path);
+ path->leave_spinning = 1;
ret = btrfs_insert_empty_item(trans, root, path, &ins,
sizeof(*extent));
BUG_ON(ret);
@@ -639,17 +640,22 @@ next_slot:
ram_bytes);
btrfs_set_file_extent_type(leaf, extent, found_type);
+ btrfs_unlock_up_safe(path, 1);
btrfs_mark_buffer_dirty(path->nodes[0]);
+ btrfs_set_lock_blocking(path->nodes[0]);
if (disk_bytenr != 0) {
ret = btrfs_update_extent_ref(trans, root,
- disk_bytenr, orig_parent,
+ disk_bytenr,
+ le64_to_cpu(old.disk_num_bytes),
+ orig_parent,
leaf->start,
root->root_key.objectid,
trans->transid, ins.objectid);
BUG_ON(ret);
}
+ path->leave_spinning = 0;
btrfs_release_path(root, path);
if (disk_bytenr != 0)
inode_add_bytes(inode, extent_end - end);
@@ -912,7 +918,7 @@ again:
btrfs_set_file_extent_other_encoding(leaf, fi, 0);
if (orig_parent != leaf->start) {
- ret = btrfs_update_extent_ref(trans, root, bytenr,
+ ret = btrfs_update_extent_ref(trans, root, bytenr, num_bytes,
orig_parent, leaf->start,
root->root_key.objectid,
trans->transid, inode->i_ino);
@@ -1155,6 +1161,20 @@ out_nolock:
page_cache_release(pinned[1]);
*ppos = pos;
+ /*
+ * we want to make sure fsync finds this change
+ * but we haven't joined a transaction running right now.
+ *
+ * Later on, someone is sure to update the inode and get the
+ * real transid recorded.
+ *
+ * We set last_trans now to the fs_info generation + 1,
+ * this will either be one more than the running transaction
+ * or the generation used for the next transaction if there isn't
+ * one running right now.
+ */
+ BTRFS_I(inode)->last_trans = root->fs_info->generation + 1;
+
if (num_written > 0 && will_write) {
struct btrfs_trans_handle *trans;
@@ -1167,8 +1187,11 @@ out_nolock:
ret = btrfs_log_dentry_safe(trans, root,
file->f_dentry);
if (ret == 0) {
- btrfs_sync_log(trans, root);
- btrfs_end_transaction(trans, root);
+ ret = btrfs_sync_log(trans, root);
+ if (ret == 0)
+ btrfs_end_transaction(trans, root);
+ else
+ btrfs_commit_transaction(trans, root);
} else {
btrfs_commit_transaction(trans, root);
}
@@ -1185,6 +1208,18 @@ out_nolock:
int btrfs_release_file(struct inode *inode, struct file *filp)
{
+ /*
+ * ordered_data_close is set by settattr when we are about to truncate
+ * a file from a non-zero size to a zero size. This tries to
+ * flush down new bytes that may have been written if the
+ * application were using truncate to replace a file in place.
+ */
+ if (BTRFS_I(inode)->ordered_data_close) {
+ BTRFS_I(inode)->ordered_data_close = 0;
+ btrfs_add_ordered_operation(NULL, BTRFS_I(inode)->root, inode);
+ if (inode->i_size > BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT)
+ filemap_flush(inode->i_mapping);
+ }
if (filp->private_data)
btrfs_ioctl_trans_end(filp);
return 0;
@@ -1260,8 +1295,11 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
if (ret > 0) {
ret = btrfs_commit_transaction(trans, root);
} else {
- btrfs_sync_log(trans, root);
- ret = btrfs_end_transaction(trans, root);
+ ret = btrfs_sync_log(trans, root);
+ if (ret == 0)
+ ret = btrfs_end_transaction(trans, root);
+ else
+ ret = btrfs_commit_transaction(trans, root);
}
mutex_lock(&dentry->d_inode->i_mutex);
out: