From 8a8f457862e093f8d513b92769ebdf637929891a Mon Sep 17 00:00:00 2001 From: Fabricio Voznika Date: Tue, 1 Sep 2020 19:20:37 -0700 Subject: Implement setattr+clunk in 9P This is to cover the common pattern: open->read/write->close, where SetAttr needs to be called to update atime/mtime before the file is closed. Benchmark results: BM_OpenReadClose/10240 CPU setattr+clunk: 63783 ns VFS2: 68109 ns VFS1: 72507 ns Updates #1198 PiperOrigin-RevId: 329628461 --- pkg/p9/version.go | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'pkg/p9/version.go') diff --git a/pkg/p9/version.go b/pkg/p9/version.go index 09cde9f5a..8d7168ef5 100644 --- a/pkg/p9/version.go +++ b/pkg/p9/version.go @@ -26,7 +26,7 @@ const ( // // Clients are expected to start requesting this version number and // to continuously decrement it until a Tversion request succeeds. - highestSupportedVersion uint32 = 11 + highestSupportedVersion uint32 = 12 // lowestSupportedVersion is the lowest supported version X in a // version string of the format 9P2000.L.Google.X. @@ -173,3 +173,9 @@ func versionSupportsGetSetXattr(v uint32) bool { func versionSupportsListRemoveXattr(v uint32) bool { return v >= 11 } + +// versionSupportsTsetattrclunk returns true if version v supports +// the Tsetattrclunk message. +func versionSupportsTsetattrclunk(v uint32) bool { + return v >= 12 +} -- cgit v1.2.3