diff options
Diffstat (limited to 'pkg/sentry/fs/gofer/session.go')
| -rw-r--r-- | pkg/sentry/fs/gofer/session.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pkg/sentry/fs/gofer/session.go b/pkg/sentry/fs/gofer/session.go index d626b86f5..ed5147c65 100644 --- a/pkg/sentry/fs/gofer/session.go +++ b/pkg/sentry/fs/gofer/session.go @@ -28,6 +28,10 @@ import ( "gvisor.googlesource.com/gvisor/pkg/unet" ) +// DefaultDirentCacheSize is the default dirent cache size for 9P mounts. It can +// be adjusted independentely from the other dirent caches. +var DefaultDirentCacheSize uint64 = fs.DefaultDirentCacheSize + // +stateify savable type endpointMaps struct { // mu protexts the direntMap, the keyMap, and the pathMap below. @@ -249,6 +253,11 @@ func Root(ctx context.Context, dev string, filesystem fs.Filesystem, superBlockF // Construct the MountSource with the session and superBlockFlags. m := fs.NewMountSource(s, filesystem, superBlockFlags) + // Given that gofer files can consume host FDs, restrict the number + // of files that can be held by the cache. + m.SetDirentCacheMaxSize(DefaultDirentCacheSize) + m.SetDirentCacheLimiter(fs.DirentCacheLimiterFromContext(ctx)) + // Send the Tversion request. s.client, err = p9.NewClient(conn, s.msize, s.version) if err != nil { |