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Ping QiuandClaude Opus 4.6
66d5ba0a84
1. HIGH: LinkedWriteFsync now uses SubmitLinkRequests (IOSQE_IO_LINK) instead of SubmitRequests, ensuring write+fdatasync execute as a linked chain in the kernel. Falls back to sequential on error. 2. HIGH: PreadBatch/PwriteBatch chunk ops by ring capacity to prevent "too many requests" rejection when dirty map exceeds ring size (256). 3. MED: CloseBatchIO() added to Flusher, called in BlockVol.Close() after final flush to release io_uring ring / kernel resources. 4. MED: Sync parity — both standard and io_uring paths now use fdatasync (via platform-specific fdatasync_linux.go / fdatasync_other.go). Standard path previously used fsync; now matches io_uring semantics. On non-Linux, fdatasync falls back to fsync (only option available). 10 batchio tests, all blockvol tests pass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
15 lines
280 B
Go
15 lines
280 B
Go
//go:build linux
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package batchio
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import (
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"os"
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"syscall"
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)
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// fdatasync flushes file data to disk without updating metadata (mtime, size).
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// On Linux, this uses the fdatasync(2) syscall directly.
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func fdatasync(fd *os.File) error {
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return syscall.Fdatasync(int(fd.Fd()))
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}
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