Re: [PATCH] btrfs: fix bytes_may_use underflow after a failed tree block allocation

[Qu Wenruo <quwenruo.btrfs@gmx.com>]

在 2026/11/14 03:39, Vlad Poenaru 写道:
[...]
> 
> Fixes: 67b7859e9bfa ("btrfs: handle ENOMEM in btrfs_alloc_tree_block")
> Cc: stable@vger.kernel.org # 6.16+
> Signed-off-by: Vlad Poenaru <vlad.wing@gmail.com>

Can you simplify the commit message, not only by a little but by a ton?

I'm not against LLM generated commit message/code, but the end result 
should still be human reader friendly.
This looks very ChatGPT, which I hate a lot as chatGPT commit messages 
are a pain in the backend.

This over 100 lines commit message is definitely not human-friendly. I 
hate if I need to use LLM to just summarize the commit message.

To be honest, most (if not all) of your commit message can be extracted 
into a single call trace graph:

     btrfs_alloc_tree_block()
     |- btrfs_use_block_rsv()
     |- btrfs_reserve_extent()
     |  \- btrfs_add_reserved_bytes()  <- bytes_may_use -= blocksize
     |
     |- btrfs_init_new_buffer()
     |  \- alloc_extent_buffer()       <- fails with -ENOMEM
     |
     |- btrfs_free_reserved_extent()   <- bytes_reserved -= blocksize
     \- btrfs_unuse_block_rsv()        <- block rsv += blocksize again

I really hope you can update the memory file to let your agent not 
generate too much words salads.