From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.burntcomma.com (mail2.burntcomma.com [217.169.27.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E29472DE719 for ; Fri, 14 Nov 2025 18:48:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.169.27.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763146097; cv=none; b=qydZzZoWwPepqYoQ/1jg+7FZ+zzfoQk0/bugTUoBWjGximNHdaAQhJIbOnlrRrGEimTNLc6gy6dGPwRgYB9JMidX9/9aJPUdlH0NTqr7d6LryQFPEvyKw5ipgEmPdgRY1mqqYGL/GwJuWAfJikzpwgFcpPw6QYxQA9cB4wLVE/U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763146097; c=relaxed/simple; bh=P78I7PfBw93Q4APUQ7mYoautedqT+xv7gF+2E1Dqc+M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: Mime-Version; b=ZuVv4UkAv08LC2BSgC8BwU9t/GV2ixVka1VyN+I5iZLrR+qyIgR4vW8VvDBePQ3K6SQdFPpzLKrJFK9wN/5PyvkyHtilMklwUdaE6hZ36dujcLRLFq9yR4bm8Kur3r+Kg3d5pVsbwU84LvbDQ41lu97n+0rHogq6nvuAiclOVhA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=harmstone.com; spf=pass smtp.mailfrom=harmstone.com; dkim=pass (1024-bit key) header.d=harmstone.com header.i=@harmstone.com header.b=DFnU35Vq; arc=none smtp.client-ip=217.169.27.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=harmstone.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=harmstone.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=harmstone.com header.i=@harmstone.com header.b="DFnU35Vq" Received: from beren (beren.burntcomma.com [IPv6:2a02:8012:8cf0:0:ce28:aaff:fe0d:6db2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by mail.burntcomma.com (Postfix) with ESMTPSA id 944F82DAB0B; Fri, 14 Nov 2025 18:47:52 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=harmstone.com; s=mail; t=1763146072; bh=L49wjYXAISweP0FSEsyfoElSm+nZEpQhswtPNl+iq08=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=DFnU35VqtZdZu4J3HVBlgKzpoXrYcLP9VqgS0f4YLa+b8SQf7NzxpFn63XR+xuyUP 9wnB8JbXwfSS/rWMgzok5nTQj5kk5HOBVMskDmn/Ny5cXcUn2vHOWrRFXLnSXwPvcV HPb8uyb784BMvLOQE0Cyp2vIdRSmhSYp7knPDDpU= From: Mark Harmstone To: linux-btrfs@vger.kernel.org Cc: Mark Harmstone , Boris Burkov Subject: [PATCH v6 13/16] btrfs: add do_remap param to btrfs_discard_extent() Date: Fri, 14 Nov 2025 18:47:18 +0000 Message-ID: <20251114184745.9304-14-mark@harmstone.com> In-Reply-To: <20251114184745.9304-1-mark@harmstone.com> References: <20251114184745.9304-1-mark@harmstone.com> Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: 8bit btrfs_discard_extent() can be called either when an extent is removed or from walking the free-space tree. With a remapped block group these two things are no longer equivalent: the extent's addresses are remapped, while the free-space tree exclusively uses underlying addresses. Add a do_remap parameter to btrfs_discard_extent() and btrfs_map_discard(), saying whether or not the address needs to be run through the remap tree first. Signed-off-by: Mark Harmstone Reviewed-by: Boris Burkov --- fs/btrfs/extent-tree.c | 11 +++++++---- fs/btrfs/extent-tree.h | 2 +- fs/btrfs/free-space-cache.c | 2 +- fs/btrfs/inode.c | 2 +- fs/btrfs/volumes.c | 23 +++++++++++++++++++++-- fs/btrfs/volumes.h | 2 +- 6 files changed, 32 insertions(+), 10 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index ab20f7fed4cf..91b4e1b0842c 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1381,7 +1381,7 @@ static int do_discard_extent(struct btrfs_discard_stripe *stripe, u64 *bytes) } int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, - u64 num_bytes, u64 *actual_bytes) + u64 num_bytes, u64 *actual_bytes, bool do_remap) { int ret = 0; u64 discarded_bytes = 0; @@ -1399,7 +1399,8 @@ int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, int i; num_bytes = end - cur; - stripes = btrfs_map_discard(fs_info, cur, &num_bytes, &num_stripes); + stripes = btrfs_map_discard(fs_info, cur, &num_bytes, + &num_stripes, do_remap); if (IS_ERR(stripes)) { ret = PTR_ERR(stripes); if (ret == -EOPNOTSUPP) @@ -2912,7 +2913,8 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans) if (btrfs_test_opt(fs_info, DISCARD_SYNC)) ret = btrfs_discard_extent(fs_info, start, - end + 1 - start, NULL); + end + 1 - start, NULL, + true); next_state = btrfs_next_extent_state(unpin, cached_state); btrfs_clear_extent_dirty(unpin, start, end, &cached_state); @@ -2970,7 +2972,8 @@ int btrfs_finish_extent_commit(struct btrfs_trans_handle *trans) ret = -EROFS; if (!TRANS_ABORTED(trans)) ret = btrfs_discard_extent(fs_info, block_group->start, - block_group->length, NULL); + block_group->length, NULL, + true); /* * Not strictly necessary to lock, as the block_group should be diff --git a/fs/btrfs/extent-tree.h b/fs/btrfs/extent-tree.h index a15a9497c9f3..0700cb8de3f3 100644 --- a/fs/btrfs/extent-tree.h +++ b/fs/btrfs/extent-tree.h @@ -161,7 +161,7 @@ int btrfs_drop_subtree(struct btrfs_trans_handle *trans, struct extent_buffer *parent); void btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info, u64 start, u64 end); int btrfs_discard_extent(struct btrfs_fs_info *fs_info, u64 bytenr, - u64 num_bytes, u64 *actual_bytes); + u64 num_bytes, u64 *actual_bytes, bool do_remap); int btrfs_trim_fs(struct btrfs_fs_info *fs_info, struct fstrim_range *range); void btrfs_handle_fully_remapped_bgs(struct btrfs_fs_info *fs_info); diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 05ce6b5a898f..30507fa8ad80 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -3677,7 +3677,7 @@ static int do_trimming(struct btrfs_block_group *block_group, } spin_unlock(&space_info->lock); - ret = btrfs_discard_extent(fs_info, start, bytes, &trimmed); + ret = btrfs_discard_extent(fs_info, start, bytes, &trimmed, false); if (!ret) { *total_trimmed += trimmed; trim_state = BTRFS_TRIM_STATE_TRIMMED; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1a0c380ef464..0d0b36891bc7 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3306,7 +3306,7 @@ int btrfs_finish_one_ordered(struct btrfs_ordered_extent *ordered_extent) btrfs_discard_extent(fs_info, ordered_extent->disk_bytenr, ordered_extent->disk_num_bytes, - NULL); + NULL, true); btrfs_free_reserved_extent(fs_info, ordered_extent->disk_bytenr, ordered_extent->disk_num_bytes, true); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 58ce94e99f7d..80749c8ef8b2 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3429,7 +3429,7 @@ static int btrfs_relocate_chunk_finish(struct btrfs_fs_info *fs_info, */ if (btrfs_is_zoned(fs_info)) { ret = btrfs_discard_extent(fs_info, block_group->start, length, - NULL); + NULL, true); if (ret) btrfs_info(fs_info, "failed to reset zone %llu after relocation", @@ -6114,7 +6114,7 @@ void btrfs_put_bioc(struct btrfs_io_context *bioc) */ struct btrfs_discard_stripe *btrfs_map_discard(struct btrfs_fs_info *fs_info, u64 logical, u64 *length_ret, - u32 *num_stripes) + u32 *num_stripes, bool do_remap) { struct btrfs_chunk_map *map; struct btrfs_discard_stripe *stripes; @@ -6138,6 +6138,25 @@ struct btrfs_discard_stripe *btrfs_map_discard(struct btrfs_fs_info *fs_info, if (IS_ERR(map)) return ERR_CAST(map); + if (do_remap && map->type & BTRFS_BLOCK_GROUP_REMAPPED) { + u64 new_logical = logical; + + ret = btrfs_translate_remap(fs_info, &new_logical, &length); + if (ret) + goto out_free_map; + + if (new_logical != logical) { + btrfs_free_chunk_map(map); + + map = btrfs_get_chunk_map(fs_info, new_logical, + length); + if (IS_ERR(map)) + return ERR_CAST(map); + + logical = new_logical; + } + } + /* we don't discard raid56 yet */ if (map->type & BTRFS_BLOCK_GROUP_RAID56_MASK) { ret = -EOPNOTSUPP; diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index ccf0a459180d..505a50689fb0 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -732,7 +732,7 @@ int btrfs_map_repair_block(struct btrfs_fs_info *fs_info, u32 length, int mirror_num); struct btrfs_discard_stripe *btrfs_map_discard(struct btrfs_fs_info *fs_info, u64 logical, u64 *length_ret, - u32 *num_stripes); + u32 *num_stripes, bool do_remap); int btrfs_read_sys_array(struct btrfs_fs_info *fs_info); int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info); struct btrfs_block_group *btrfs_create_chunk(struct btrfs_trans_handle *trans, -- 2.51.0