diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2023-08-01 20:18:33 -0400 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-08-01 22:13:03 -0400 |
commit | 87179c7a6e2a210ea57951d444a3055e883d08fa (patch) | |
tree | 3445e8b5d6724518cbc6f659f9d0b0ff59b08bfa /libbcachefs/inode.c | |
parent | 2d7982de784b24e24baa20eee0a97dea451b8fa7 (diff) |
Update bcachefs sources to 33a60d9b05 bcachefs: Assorted fixes for clang
Diffstat (limited to 'libbcachefs/inode.c')
-rw-r--r-- | libbcachefs/inode.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/libbcachefs/inode.c b/libbcachefs/inode.c index 8834809d..755cf7d1 100644 --- a/libbcachefs/inode.c +++ b/libbcachefs/inode.c @@ -923,3 +923,66 @@ void bch2_inode_opts_get(struct bch_io_opts *opts, struct bch_fs *c, if (opts->nocow) opts->compression = opts->background_compression = opts->data_checksum = opts->erasure_code = 0; } + +int bch2_inode_rm_snapshot(struct btree_trans *trans, u64 inum, u32 snapshot) +{ + struct bch_fs *c = trans->c; + struct btree_iter iter = { NULL }; + struct bkey_i_inode_generation delete; + struct bch_inode_unpacked inode_u; + struct bkey_s_c k; + int ret; + + do { + ret = bch2_btree_delete_range_trans(trans, BTREE_ID_extents, + SPOS(inum, 0, snapshot), + SPOS(inum, U64_MAX, snapshot), + 0, NULL) ?: + bch2_btree_delete_range_trans(trans, BTREE_ID_dirents, + SPOS(inum, 0, snapshot), + SPOS(inum, U64_MAX, snapshot), + 0, NULL) ?: + bch2_btree_delete_range_trans(trans, BTREE_ID_xattrs, + SPOS(inum, 0, snapshot), + SPOS(inum, U64_MAX, snapshot), + 0, NULL); + } while (ret == -BCH_ERR_transaction_restart_nested); + if (ret) + goto err; +retry: + bch2_trans_begin(trans); + + k = bch2_bkey_get_iter(trans, &iter, BTREE_ID_inodes, + SPOS(0, inum, snapshot), BTREE_ITER_INTENT); + ret = bkey_err(k); + if (ret) + goto err; + + if (!bkey_is_inode(k.k)) { + bch2_fs_inconsistent(c, + "inode %llu:%u not found when deleting", + inum, snapshot); + ret = -EIO; + goto err; + } + + bch2_inode_unpack(k, &inode_u); + + /* Subvolume root? */ + if (inode_u.bi_subvol) + bch_warn(c, "deleting inode %llu marked as unlinked, but also a subvolume root!?", inode_u.bi_inum); + + bkey_inode_generation_init(&delete.k_i); + delete.k.p = iter.pos; + delete.v.bi_generation = cpu_to_le32(inode_u.bi_generation + 1); + + ret = bch2_trans_update(trans, &iter, &delete.k_i, 0) ?: + bch2_trans_commit(trans, NULL, NULL, + BTREE_INSERT_NOFAIL); +err: + bch2_trans_iter_exit(trans, &iter); + if (bch2_err_matches(ret, BCH_ERR_transaction_restart)) + goto retry; + + return ret ?: -BCH_ERR_transaction_restart_nested; +} |