Merge "Fix the dm-verity Merkle tree caches to not expire so quickly" into main am: 6dc0ed1758
Original change: https://android-review.googlesource.com/c/platform/system/core/+/3377529
Change-Id: Id336c8aea1a2abf9cf9d8dfbfcf735109f1103d6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 060395d..e487797 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -54,6 +54,10 @@
mkdir /linkerconfig/bootstrap 0755
mkdir /linkerconfig/default 0755
+ # Greatly extend dm-verity's Merkle tree cache timeout. The default timeout
+ # is much too short and is unnecessary, given that there is also a shrinker.
+ write /sys/module/dm_bufio/parameters/max_age_seconds 86400
+
# Disable dm-verity hash prefetching, since it doesn't help performance
# Read more in b/136247322
write /sys/module/dm_verity/parameters/prefetch_cluster 0