diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/send.c | 56 |
1 files changed, 37 insertions, 19 deletions
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 2ed36af6e43a..895f1b180b2f 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -243,6 +243,7 @@ struct waiting_dir_move { * after this directory is moved, we can try to rmdir the ino rmdir_ino. */ u64 rmdir_ino; + bool orphanized; }; struct orphan_dir_info { @@ -1900,8 +1901,13 @@ static int did_overwrite_ref(struct send_ctx *sctx, goto out; } - /* we know that it is or will be overwritten. check this now */ - if (ow_inode < sctx->send_progress) + /* + * We know that it is or will be overwritten. Check this now. + * The current inode being processed might have been the one that caused + * inode 'ino' to be orphanized, therefore ow_inode can actually be the + * same as sctx->send_progress. + */ + if (ow_inode <= sctx->send_progress) ret = 1; else ret = 0; @@ -2223,6 +2229,8 @@ static int get_cur_path(struct send_ctx *sctx, u64 ino, u64 gen, fs_path_reset(dest); while (!stop && ino != BTRFS_FIRST_FREE_OBJECTID) { + struct waiting_dir_move *wdm; + fs_path_reset(name); if (is_waiting_for_rm(sctx, ino)) { @@ -2233,7 +2241,11 @@ static int get_cur_path(struct send_ctx *sctx, u64 ino, u64 gen, break; } - if (is_waiting_for_move(sctx, ino)) { + wdm = get_waiting_dir_move(sctx, ino); + if (wdm && wdm->orphanized) { + ret = gen_unique_name(sctx, ino, gen, name); + stop = 1; + } else if (wdm) { ret = get_first_ref(sctx->parent_root, ino, &parent_inode, &parent_gen, name); } else { @@ -2923,7 +2935,7 @@ static int is_waiting_for_move(struct send_ctx *sctx, u64 ino) return entry != NULL; } -static int add_waiting_dir_move(struct send_ctx *sctx, u64 ino) +static int add_waiting_dir_move(struct send_ctx *sctx, u64 ino, bool orphanized) { struct rb_node **p = &sctx->waiting_dir_moves.rb_node; struct rb_node *parent = NULL; @@ -2934,6 +2946,7 @@ static int add_waiting_dir_move(struct send_ctx *sctx, u64 ino) return -ENOMEM; dm->ino = ino; dm->rmdir_ino = 0; + dm->orphanized = orphanized; while (*p) { parent = *p; @@ -3030,7 +3043,7 @@ static int add_pending_dir_move(struct send_ctx *sctx, goto out; } - ret = add_waiting_dir_move(sctx, pm->ino); + ret = add_waiting_dir_move(sctx, pm->ino, is_orphan); if (ret) goto out; @@ -3385,7 +3398,8 @@ static int is_ancestor(struct btrfs_root *root, } static int wait_for_parent_move(struct send_ctx *sctx, - struct recorded_ref *parent_ref) + struct recorded_ref *parent_ref, + const bool is_orphan) { int ret = 0; u64 ino = parent_ref->dir; @@ -3464,7 +3478,7 @@ out: ino, &sctx->new_refs, &sctx->deleted_refs, - false); + is_orphan); if (!ret) ret = 1; } @@ -3633,6 +3647,17 @@ verbose_printk("btrfs: process_recorded_refs %llu\n", sctx->cur_ino); } } + if (S_ISDIR(sctx->cur_inode_mode) && sctx->parent_root && + can_rename) { + ret = wait_for_parent_move(sctx, cur, is_orphan); + if (ret < 0) + goto out; + if (ret == 1) { + can_rename = false; + *pending_move = 1; + } + } + /* * link/move the ref to the new place. If we have an orphan * inode, move it and update valid_path. If not, link or move @@ -3653,18 +3678,11 @@ verbose_printk("btrfs: process_recorded_refs %llu\n", sctx->cur_ino); * dirs, we always have one new and one deleted * ref. The deleted ref is ignored later. */ - ret = wait_for_parent_move(sctx, cur); - if (ret < 0) - goto out; - if (ret) { - *pending_move = 1; - } else { - ret = send_rename(sctx, valid_path, - cur->full_path); - if (!ret) - ret = fs_path_copy(valid_path, - cur->full_path); - } + ret = send_rename(sctx, valid_path, + cur->full_path); + if (!ret) + ret = fs_path_copy(valid_path, + cur->full_path); if (ret < 0) goto out; } else { |