diff options
| -rw-r--r-- | fs/btrfs/ioctl.c | 9 | ||||
| -rw-r--r-- | fs/btrfs/transaction.c | 9 | ||||
| -rw-r--r-- | fs/btrfs/transaction.h | 1 |
3 files changed, 13 insertions, 6 deletions
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index fa25091e10ab..27fc660b0ff3 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -659,6 +659,13 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, if (!pending_snapshot) return -ENOMEM; + pending_snapshot->root_item = kzalloc(sizeof(struct btrfs_root_item), + GFP_NOFS); + if (!pending_snapshot->root_item) { + ret = -ENOMEM; + goto free_pending; + } + atomic_inc(&root->will_be_snapshoted); smp_mb__after_atomic(); btrfs_wait_for_no_snapshoting_writes(root); @@ -738,6 +745,8 @@ fail: dec_and_free: if (atomic_dec_and_test(&root->will_be_snapshoted)) wake_up_atomic_t(&root->will_be_snapshoted); +free_pending: + kfree(pending_snapshot->root_item); kfree(pending_snapshot); return ret; diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index be8eae80ff65..2074106122d9 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1325,11 +1325,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, return 0; } - new_root_item = kmalloc(sizeof(*new_root_item), GFP_NOFS); - if (!new_root_item) { - pending->error = -ENOMEM; - goto root_item_alloc_fail; - } + ASSERT(pending->root_item); + new_root_item = pending->root_item; pending->error = btrfs_find_free_objectid(tree_root, &objectid); if (pending->error) @@ -1562,7 +1559,7 @@ clear_skip_qgroup: btrfs_clear_skip_qgroup(trans); no_free_objectid: kfree(new_root_item); -root_item_alloc_fail: + pending->root_item = NULL; btrfs_free_path(path); return ret; } diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 64c8221b6165..b6f9a3c94468 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -137,6 +137,7 @@ struct btrfs_pending_snapshot { struct dentry *dentry; struct inode *dir; struct btrfs_root *root; + struct btrfs_root_item *root_item; struct btrfs_root *snap; struct btrfs_qgroup_inherit *inherit; /* block reservation for the operation */ |