writeback: Avoid softlockup when switching many inodes

Browse source

process_inode_switch_wbs_work() can be switching over 100 inodes to a
different cgroup. Since switching an inode requires counting all dirty &
under-writeback pages in the address space of each inode, this can take
a significant amount of time. Add a possibility to reschedule after
processing each inode to avoid softlockups.

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>

...

This commit is contained in:

Jan Kara 2025-09-12 12:38:36 +02:00 • committed by Christian Brauner

parent e1b849cfa6

commit 66c14dccd8

No known key found for this signature in database

GPG key ID: 91C61BC06578DCA2

1 changed files with 10 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

11

fs/fs-writeback.c

View file