tree 46635a47792607b8a74e2f56fa6ca96026b199ce
parent 0ce36d1d9a8a3cab6816b03d67f80f64e582deb7
author Robert Kolchmeyer <rkolchmeyer@google.com> 1753216163 -0700
committer Robert Kolchmeyer <rkolchmeyer@google.com> 1753285385 -0700

LAKITU: NFS: do not clear the file access cache upon login by default

Commit 0eb43812c027 ("NFS: Clear the file access cache upon login")
causes the file access cache to be cleared on every `docker exec`. This
is a performance regression for some workloads. Since clearing the cache
solves real problems, put that functionality behind a module parameter
(Ubuntu implemented this parameter in GKE).

BUG=b/427144804
TEST=presubmit
RELEASE_NOTE=The NFS access cache is no longer cleared on login by default. To use the old behavior, load the NFS module with the `nfs_fasc=1` module parameter.

Change-Id: I2e5ee568d240bb41afd0f577979e158b70fe3e1c
Signed-off-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/107400
Reviewed-by: Kevin Berry <kpberry@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>