commit 3a9c1794385ae80c7835a8ec496f4a2efdf4de76
author Bart Van Assche <bvanassche@google.com> Fri Aug 06 10:21:12 2021 -0700
committer Android Build Coastguard Worker <android-build-coastguard-worker@google.com> Thu Aug 19 02:38:14 2021 +0000
tree 1ec6f709a67dfd9ec250347d96b262cf1a943861
parent 0b73cdcb3837e1e4e7f4fda67ab7fbaa0be1875c

Reduce the queue depth of loop devices used by the zram driver

Make the queue depth of loop devices identical to that of the underlying
storage device. This patch reduces latency by lowering the queue depth.
With this patch applied I see the following:

 # cat /sys/block/loop30/queue/nr_requests
32

Bug: 194450129
Test: Built Android images, installed these and verified that the queue depth of loop devices is 32 instead of 256.
Merged-In: Ifa16084c7df3a54d9559c2388abc4a8392ff88c6
Change-Id: Icc89e1f88d2f0ade2805999afef556b15b7ff8eb
Ignore-AOSP-First: Already in AOSP.
Signed-off-by: Bart Van Assche <bvanassche@google.com>
(cherry picked from commit 1a9cad816de296b3f5ee026869cab4413ec7527c)