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authorFabricio Voznika <fvoznika@google.com>2020-09-01 19:20:37 -0700
committergVisor bot <gvisor-bot@google.com>2020-09-01 19:22:12 -0700
commit37a217aca4a128d66a6dd4969375ea81bd879ac7 (patch)
tree21f60d54ca05029cd2c67d7de78cb987ee76f050 /runsc
parent40faeaa180a30906da4822a105c43fcdb996750d (diff)
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
Diffstat (limited to 'runsc')
-rw-r--r--runsc/fsgofer/fsgofer.go2
1 files changed, 2 insertions, 0 deletions
diff --git a/runsc/fsgofer/fsgofer.go b/runsc/fsgofer/fsgofer.go
index b0788bd23..4268d97a1 100644
--- a/runsc/fsgofer/fsgofer.go
+++ b/runsc/fsgofer/fsgofer.go
@@ -181,6 +181,8 @@ func (a *attachPoint) makeQID(stat unix.Stat_t) p9.QID {
// The few exceptions where it cannot be done are: utimensat on symlinks, and
// Connect() for the socket address.
type localFile struct {
+ p9.DisallowClientCalls
+
// attachPoint is the attachPoint that serves this localFile.
attachPoint *attachPoint