diff options
Diffstat (limited to 'fs/btrfs/inode.c')
| -rw-r--r-- | fs/btrfs/inode.c | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index fc9c0439caa3..d23362f4464e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -5261,42 +5261,6 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) iput(inode); inode = ERR_PTR(ret); } - /* - * If orphan cleanup did remove any orphans, it means the tree - * was modified and therefore the commit root is not the same as - * the current root anymore. This is a problem, because send - * uses the commit root and therefore can see inode items that - * don't exist in the current root anymore, and for example make - * calls to btrfs_iget, which will do tree lookups based on the - * current root and not on the commit root. Those lookups will - * fail, returning a -ESTALE error, and making send fail with - * that error. So make sure a send does not see any orphans we - * have just removed, and that it will see the same inodes - * regardless of whether a transaction commit happened before - * it started (meaning that the commit root will be the same as - * the current root) or not. - */ - if (sub_root->node != sub_root->commit_root) { - u64 sub_flags = btrfs_root_flags(&sub_root->root_item); - - if (sub_flags & BTRFS_ROOT_SUBVOL_RDONLY) { - struct extent_buffer *eb; - - /* - * Assert we can't have races between dentry - * lookup called through the snapshot creation - * ioctl and the VFS. - */ - ASSERT(mutex_is_locked(&dir->i_mutex)); - - down_write(&root->fs_info->commit_root_sem); - eb = sub_root->commit_root; - sub_root->commit_root = - btrfs_root_node(sub_root); - up_write(&root->fs_info->commit_root_sem); - free_extent_buffer(eb); - } - } } return inode; |