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Windows: disable ordered flush barriers by default

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Keep ordered flush barrier support available behind the new VC_DRIVER_CONFIG_ENABLE_ORDERED_FLUSH_BARRIERS driver configuration flag. With the flag clear, non-system IRP_MJ_FLUSH_BUFFERS requests complete successfully as they did before d1f73ce4 instead of entering EncryptedIoQueue.

This narrows the default Windows driver behavior while investigating 1.26.29 instability reports, but retains an opt-in path for targeted testing of ordered flush barriers. The close-time best-effort host flush is now gated by the same flag, so default close and dismount behavior also matches the pre-d1f73ce4 path.
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Mounir IDRASSI committed 2026-07-01 21:22:03 +09:00
1 parent c947e56b6e
commit f6544a5b07
4 files changed
+13 -2
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src/Common/Apidrvr.h
+1
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@@ -448,5 +448,6 @@ typedef struct
#define VC_DRIVER_CONFIG_CLEAR_KEYS_ON_NEW_DEVICE_INSERTION 0x400
#define VC_DRIVER_CONFIG_ENABLE_CPU_RNG 0x800
#define VC_DRIVER_CONFIG_ENABLE_RAM_ENCRYPTION 0x1000
#define VC_DRIVER_CONFIG_ENABLE_ORDERED_FLUSH_BARRIERS 0x2000
#endif /* _WIN32 */