diff options
Diffstat (limited to 'fs/btrfs/send.c')
| -rw-r--r-- | fs/btrfs/send.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 27e92594a81b..cbf4909f5cd9 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -1248,12 +1248,20 @@ static int __iterate_backrefs(u64 ino, u64 offset, u64 root, void *ctx_) */ if (found->root == bctx->sctx->send_root) { /* - * TODO for the moment we don't accept clones from the inode - * that is currently send. We may change this when - * BTRFS_IOC_CLONE_RANGE supports cloning from and to the same - * file. + * If the source inode was not yet processed we can't issue a + * clone operation, as the source extent does not exist yet at + * the destination of the stream. */ - if (ino >= bctx->cur_objectid) + if (ino > bctx->cur_objectid) + return 0; + /* + * We clone from the inode currently being sent as long as the + * source extent is already processed, otherwise we could try + * to clone from an extent that does not exist yet at the + * destination of the stream. + */ + if (ino == bctx->cur_objectid && + offset >= bctx->sctx->cur_inode_next_write_offset) return 0; } |