Amir Goldstein a5e57b4d37 fsnotify: optimize the case of no permission event watchers ... Commit e43de7f086 ("fsnotify: optimize the case of no marks of any type") optimized the case where there are no fsnotify watchers on any of the filesystem's objects. It is quite common for a system to have a single local filesystem and it is quite common for the system to have some inotify watches on some config files or directories, so the optimization of no marks at all is often not in effect. Permission event watchers, which require high priority group are more rare, so optimizing the case of no marks og high priority groups can improve performance for more systems, especially for performance sensitive io workloads. Count per-sb watched objects by high priority groups and use that the optimize out the call to __fsnotify_parent() and fsnotify() in fsnotify permission hooks. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz> Message-Id: <20240317184154.1200192-11-amir73il@gmail.com>		2024-04-04 16:24:16 +02:00
..
dnotify	fsnotify: create a wrapper fsnotify_find_inode_mark()	2024-04-04 16:24:16 +02:00
fanotify	fsnotify: use an enum for group priority constants	2024-04-04 16:24:16 +02:00
inotify	fsnotify: create a wrapper fsnotify_find_inode_mark()	2024-04-04 16:24:16 +02:00
fdinfo.c	fsnotify: Avoid -Wflex-array-member-not-at-end warning	2024-03-26 10:53:32 +01:00
fdinfo.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
fsnotify.c	fsnotify: optimize the case of no permission event watchers	2024-04-04 16:24:16 +02:00
fsnotify.h	fsnotify: lazy attach fsnotify_sb_info state to sb	2024-04-04 16:24:16 +02:00
group.c	fsnotify: create helpers for group mark_mutex lock	2022-04-25 14:37:22 +02:00
Kconfig	fs/notify: Remove "select SRCU"	2023-02-02 16:26:06 -08:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mark.c	fsnotify: optimize the case of no permission event watchers	2024-04-04 16:24:16 +02:00
notification.c	fsnotify: Pass group argument to free_event	2021-10-27 12:34:18 +02:00