6.8-stable review patch. If anyone has any objections, please let me know.
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From: David Sterba dsterba@suse.com
[ Upstream commit c03c89f821e51325d0e592cf625cf5e0a26fa3a7 ]
We've had numerous attempts to let function unpin_extent_cache() return void as it only returns 0. There are still error cases to handle so do that, in addition to the verbose messages. The only caller btrfs_finish_one_ordered() will now abort the transaction, previously it let it continue which could lead to further problems.
Signed-off-by: David Sterba dsterba@suse.com Stable-dep-of: 4dc1d69c2b10 ("btrfs: fix warning messages not printing interval at unpin_extent_range()") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/btrfs/extent_map.c | 10 +++++++++- fs/btrfs/inode.c | 9 +++++++-- 2 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index b61099bf97a82..f170e7122e747 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -291,6 +291,10 @@ static void try_merge_map(struct extent_map_tree *tree, struct extent_map *em) * Called after an extent has been written to disk properly. Set the generation * to the generation that actually added the file item to the inode so we know * we need to sync this extent when we call fsync(). + * + * Returns: 0 on success + * -ENOENT when the extent is not found in the tree + * -EUCLEAN if the found extent does not match the expected start */ int unpin_extent_cache(struct btrfs_inode *inode, u64 start, u64 len, u64 gen) { @@ -308,14 +312,18 @@ int unpin_extent_cache(struct btrfs_inode *inode, u64 start, u64 len, u64 gen) "no extent map found for inode %llu (root %lld) when unpinning extent range [%llu, %llu), generation %llu", btrfs_ino(inode), btrfs_root_id(inode->root), start, len, gen); + ret = -ENOENT; goto out; }
- if (WARN_ON(em->start != start)) + if (WARN_ON(em->start != start)) { btrfs_warn(fs_info, "found extent map for inode %llu (root %lld) with unexpected start offset %llu when unpinning extent range [%llu, %llu), generation %llu", btrfs_ino(inode), btrfs_root_id(inode->root), em->start, start, len, gen); + ret = -EUCLEAN; + goto out; + }
em->generation = gen; em->flags &= ~EXTENT_FLAG_PINNED; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 8151ad5f4650b..5ceb995709b56 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3127,8 +3127,13 @@ int btrfs_finish_one_ordered(struct btrfs_ordered_extent *ordered_extent) ordered_extent->disk_num_bytes); } } - unpin_extent_cache(inode, ordered_extent->file_offset, - ordered_extent->num_bytes, trans->transid); + if (ret < 0) { + btrfs_abort_transaction(trans, ret); + goto out; + } + + ret = unpin_extent_cache(inode, ordered_extent->file_offset, + ordered_extent->num_bytes, trans->transid); if (ret < 0) { btrfs_abort_transaction(trans, ret); goto out;