Nathan Huckleberry 260becc389 fsverity: Remove WQ_UNBOUND from fsverity read workqueue ... commit f959325e6a upstream. WQ_UNBOUND causes significant scheduler latency on ARM64/Android. This is problematic for latency sensitive workloads, like I/O post-processing. Removing WQ_UNBOUND gives a 96% reduction in fsverity workqueue related scheduler latency and improves app cold startup times by ~30ms. WQ_UNBOUND was also removed from the dm-verity workqueue for the same reason [1]. This code was tested by running Android app startup benchmarks and measuring how long the fsverity workqueue spent in the runnable state. Before Total workqueue scheduler latency: 553800us After Total workqueue scheduler latency: 18962us [1]: https://lore.kernel.org/all/20230202012348.885402-1-nhuck@google.com/ Signed-off-by: Nathan Huckleberry <nhuck@google.com> Fixes: 8a1d0f9cac ("fs-verity: add data verification hooks for ->readpages()") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230310193325.620493-1-nhuck@google.com Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-03-30 12:49:23 +02:00
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enable.c	Page cache changes for 5.19	2022-05-24 19:55:07 -07:00
fsverity_private.h	btrfs: send: add support for fs-verity	2022-09-26 12:27:55 +02:00
hash_algs.c	fs-verity: remove filenames from file comments	2020-11-16 11:40:10 -08:00
init.c	fs-verity: remove filenames from file comments	2020-11-16 11:40:10 -08:00
Kconfig	fs-verity: mention btrfs support	2022-07-15 23:42:30 -07:00
Makefile	fs-verity: add FS_IOC_READ_VERITY_METADATA ioctl	2021-02-07 14:51:11 -08:00
measure.c	fs-verity: define a function to return the integrity protected file digest	2022-05-01 16:39:36 -04:00
open.c	fs-verity: remove unused parameter desc_size in fsverity_create_info()	2022-05-18 11:01:31 -07:00
read_metadata.c	fs-verity: use kmap_local_page() instead of kmap()	2022-08-19 15:19:55 -07:00
signature.c	fs-verity: don't pass whole descriptor to fsverity_verify_signature()	2021-02-07 14:51:09 -08:00
verify.c	fsverity: Remove WQ_UNBOUND from fsverity read workqueue	2023-03-30 12:49:23 +02:00