On Thu, 21 Mar 2024 17:29:03 -0700 Jaegeuk Kim
>
> I posted this patch before Light reported.
Yeah, his report's timestamp is 2024-03-20 6:59, nearly 7 hours later,
which shows that you constructed the deadlock with nothing to do with
his report.
>
> And, in the report, I didn't get this:
>
On Tue, 19 Mar 2024 17:14:42 -0700 Jaegeuk Kim
> f2fs_ioc_shutdown(F2FS_GOING_DOWN_NOSYNC) issue_discard_thread
> - mnt_want_write_file()
>- sb_start_write(SB_FREEZE_WRITE)
__sb_start_write()
percpu_down_read()
> -
>
On Fri, 25 Feb 2022 16:32:39 +0800 Hillf Danton wrote:
> On Fri, 25 Feb 2022 09:47:16 +0800 Hillf Danton wrote:
> > On Thu, 24 Feb 2022 16:47:30 +0800 Hillf Danton wrote:
> > > On Sat, 8 Jan 2022 08:46:17 -0800
> > > > From: Tim Murray
> > > >
> &g
On Fri, 25 Feb 2022 09:47:16 +0800 Hillf Danton wrote:
> On Thu, 24 Feb 2022 16:47:30 +0800 Hillf Danton wrote:
> > On Sat, 8 Jan 2022 08:46:17 -0800
> > > From: Tim Murray
> > >
> > > f2fs rw_semaphores work better if writers can starve readers,
> &
On Thu, 24 Feb 2022 16:47:30 +0800 Hillf Danton wrote:
> On Sat, 8 Jan 2022 08:46:17 -0800
> > From: Tim Murray
> >
> > f2fs rw_semaphores work better if writers can starve readers,
> > especially for the checkpoint thread, because writers are strictly
> > m
On Sat, 8 Jan 2022 08:46:17 -0800
> From: Tim Murray
>
> f2fs rw_semaphores work better if writers can starve readers,
> especially for the checkpoint thread, because writers are strictly
> more important than reader threads. This prevents significant priority
> inversion between low-priority
On Sun, 25 Jul 2021 23:00:19 -0700
> syzbot found the following issue on:
>
> HEAD commit:6498f6151825 Merge tag 'riscv-for-linus-5.14-rc3' of git:/..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=14bbce4630
> kernel config:
On Wed, 21 Jul 2021 18:41:49 -0700 Jaegeuk Kim wrote:
>
>This tries to fix priority inversion in the below condition resulting in
>long checkpoint delay.
If you are right and the patch makes real sense, feel free to specify a bit
more on the priority inversion you are trying to fix, and how the
