Ian Klemm 17b6fd91ca block: qcow: decouple pointer table writes from cursor state ...

write_pointer_table() used a BufWriter over a cloned fd because the
per-entry callback also needs mutable access to QcowRawFile.

That couples the final write location to the ambient kernel cursor while
the callback is allowed to perform metadata I/O. Materialize the encoded
entries first, then seek and write the table after callback execution
has finished.

This keeps the pointer-table write independent from current and future
callback behavior without depending on proving that a cursor-moving
callback is reachable in today's synchronous CH path.

Apply the same materialize-then-write shape to
write_pointer_table_direct() for consistent semantics, and cover both
paths with unit tests.

Assisted-by: Codex:GPT-5
Signed-off-by: Ian Klemm <hi@ianklemm.de>

2026-05-29 15:22:57 +00:00

..

src

block: qcow: decouple pointer table writes from cursor state

2026-05-29 15:22:57 +00:00

Cargo.toml

block: fix cargo test -p block

2026-05-09 14:10:25 +00:00