On Mon, Jan 10, 2022 at 8:15 PM Waiman Long wrote:
> That is not how rwsem works. A reader which fails to get the lock
> because it is write-locked will remove its reader count before going to
> sleep. So the reader count will be zero eventually. Of course, there is
> a short period of time where
On 1/10/22 14:41, Tim Murray wrote:
On Mon, Jan 10, 2022 at 7:02 AM Peter Zijlstra wrote:
Can we start by describing the actual problem?
Of course. Sorry, I didn't realize Jaegeuk was going to move so
quickly with this patch :)
We have a few thousand traces from internal Android devices whe
https://bugzilla.kernel.org/show_bug.cgi?id=215235
--- Comment #5 from Chao Yu ([email protected]) ---
This patch was merged in dev branch, and will be pushed to mainline in
5.17-rc1.
https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/commit/?h=dev-test&id=645a3c40ca3d40cc32b4b5972bf2
On Mon, Jan 10, 2022 at 7:02 AM Peter Zijlstra wrote:
> Can we start by describing the actual problem?
Of course. Sorry, I didn't realize Jaegeuk was going to move so
quickly with this patch :)
We have a few thousand traces from internal Android devices where
large numbers of threads throughout
On 1/10/22 13:45, Peter Zijlstra wrote:
On Mon, Jan 10, 2022 at 11:18:27AM -0500, Waiman Long wrote:
On 1/10/22 03:05, Christoph Hellwig wrote:
Adding the locking primitive maintainers to this patch adding open coded
locking primitives..
On Sat, Jan 08, 2022 at 08:46:17AM -0800, Jaegeuk Kim
On Mon, Jan 10, 2022 at 11:18:27AM -0500, Waiman Long wrote:
>
> On 1/10/22 03:05, Christoph Hellwig wrote:
> > Adding the locking primitive maintainers to this patch adding open coded
> > locking primitives..
> >
> > On Sat, Jan 08, 2022 at 08:46:17AM -0800, Jaegeuk Kim wrote:
> > > From: Tim Mu
On 1/10/22 03:05, Christoph Hellwig wrote:
Adding the locking primitive maintainers to this patch adding open coded
locking primitives..
On Sat, Jan 08, 2022 at 08:46:17AM -0800, Jaegeuk Kim wrote:
From: Tim Murray
f2fs rw_semaphores work better if writers can starve readers,
especially for
On Mon, Jan 10, 2022 at 12:05:26AM -0800, Christoph Hellwig wrote:
> Adding the locking primitive maintainers to this patch adding open coded
> locking primitives..
>
> On Sat, Jan 08, 2022 at 08:46:17AM -0800, Jaegeuk Kim wrote:
> > From: Tim Murray
> >
> > f2fs rw_semaphores work better if wri
https://bugzilla.kernel.org/show_bug.cgi?id=215235
David Disseldorp ([email protected]) changed:
What|Removed |Added
CC||[email protected]
On 2022/1/9 0:45, Jaegeuk Kim wrote:
If the pinned file has a hole by partial truncation, application that has
the block map will be broken.
Signed-off-by: Jaegeuk Kim
Reviewed-by: Chao Yu
Thanks
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Adding the locking primitive maintainers to this patch adding open coded
locking primitives..
On Sat, Jan 08, 2022 at 08:46:17AM -0800, Jaegeuk Kim wrote:
> From: Tim Murray
>
> f2fs rw_semaphores work better if writers can starve readers,
> especially for the checkpoint thread, because writers
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