| commit | 5fc02cca2f0b3751319f247f2ebbd3686aacc47f | [log] [tgz] |
|---|---|---|
| author | Stephen Demos <sdemos@fuchsia.infra.roller.google.com> | Thu Feb 01 03:55:34 2024 +0000 |
| committer | Copybara-Service <copybara-worker@google.com> | Wed Jan 31 19:57:16 2024 -0800 |
| tree | 18ebceeb9933fcda32bb6afae4c15831c382d81a | |
| parent | 0274c95f3225d510ce81263f8555ac4ff5d4d98d [diff] |
[roll] Roll fuchsia [fxfs] refactor open count flushing logic Simplify the logic around flushing the file when the open count drops to zero. We now subtract the open count immediately, and then purge if required, and then, if we need to flush, only flush once. The previous iteration of this function had a bug where dirty pages past the end of the file would cause an infinite loop of tasks to be spawned, holding active guards, which both actively consumed a core with the spawning activities, and prevented filesystem shutdown. It's not clear what race condition in the starnix tests caused this particular issue to be hit, but it is pretty easy to replicate by writing directly into the backing vmo of a file beyond it's truncated size. A test with this behavior is added to guard against regressions. Original-Fixed: b/318434279 Original-Fixed: b/319348464 Multiply: starnix_host_benchmark_e2e_boot Test: fx test fxfs-platform-test Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/984112 Original-Revision: 0b113fc581cba813ab4f8be08da9b02b86d01214 GitOrigin-RevId: f6878f3dde5e46427d35a4b6055c0a2219df4d29 Change-Id: Idbbe5af6e3b6cdd304936f1812f8759c7ce048ed
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