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authorFabricio Voznika <fvoznika@google.com>2021-04-20 11:47:28 -0700
committergVisor bot <gvisor-bot@google.com>2021-04-20 11:48:48 -0700
commitbf1e14cf8a24100fd12292a87e4fc3a439399669 (patch)
tree27fb92b2f070da4efd4ae0b455cf2091ccee8b07 /test/packetimpact/testbench
parent3fff4c4a0fbb1b132348d4b82f61cc38a4cc6cb2 (diff)
Speed up O_APPEND with remote revalidating
Remote revalidating requires to update file size on every write on a file opened with O_APPEND. If host FD exists, it can be used to update the size and skip round trip to the gofer. With this change, O_APPEND writes with remote revalidating is almost as fast as exclusive mode: BM_Append VFS1 60.7us VFS2 56.8us VFS2 exclusive 14.2us This change 15.8us Updates #1792 PiperOrigin-RevId: 369486801
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