On Fri, May 26, 2023 at 01:10:43AM -0700, Christoph Hellwig wrote:
> On Thu, May 25, 2023 at 07:20:46PM -0400, Kent Overstreet wrote:
> > > > I'm absolutely not in favour to add workarounds for thes kind of locking
> > > > problems to the core kernel. I a
On Fri, May 26, 2023 at 01:06:46AM -0700, Christoph Hellwig wrote:
> On Thu, May 25, 2023 at 04:50:39PM -0400, Kent Overstreet wrote:
> > A cache that isn't actually consistent is a _bug_. You're being
> > Obsequious. And any time this has come up in previous discussi
have trylock() and a defined lock ordering you can check for or
glocks (inode number)? Here's the new and expanded commit message, in
case my approach is of interest to you:
commit 32858d0fb90b503c8c39e899ad5155e44639d3b5
Author: Kent Overstreet
Date: Wed Oct 16 15:03:50 2019 -0400
sche
On Fri, May 26, 2023 at 12:25:31AM +0200, Andreas Grünbacher wrote:
> Am Di., 23. Mai 2023 um 18:28 Uhr schrieb Christoph Hellwig
> :
> > On Tue, May 23, 2023 at 03:34:31PM +0200, Jan Kara wrote:
> > > I've checked the code and AFAICT it is all indeed handled. BTW, I've now
> > > remembered that G
On Thu, May 25, 2023 at 01:58:13AM -0700, Christoph Hellwig wrote:
> On Wed, May 24, 2023 at 04:09:02AM -0400, Kent Overstreet wrote:
> > > Well, it seems like you are talking about something else than the
> > > existing cases in gfs2 and btrfs, that is you want full cons
On Thu, May 25, 2023 at 10:47:31AM +0200, Jan Kara wrote:
> If we submit direct IO that uses mapped file F at offset O as a buffer for
> direct IO from file F, offset O, it will currently livelock in an
> indefinite retry loop. It should rather return error or fall back to
> buffered IO. But that s
On Thu, May 25, 2023 at 01:58:13AM -0700, Christoph Hellwig wrote:
> On Wed, May 24, 2023 at 04:09:02AM -0400, Kent Overstreet wrote:
> > > Well, it seems like you are talking about something else than the
> > > existing cases in gfs2 and btrfs, that is you want full cons
On Tue, May 23, 2023 at 11:43:32PM -0700, Christoph Hellwig wrote:
> On Tue, May 23, 2023 at 12:35:35PM -0400, Kent Overstreet wrote:
> > No, this is fundamentally because userspace controls the ordering of
> > locking because the buffer passed to dio can point into any address
> > No, that's definitely handled (and you can see it in the code I linked),
> > and I wrote a torture test for fstests as well.
>
> I've checked the code and AFAICT it is all indeed handled. BTW, I've now
> remembered that GFS2 has dealt with the same deadlocks - b01b2d72da25
> ("gfs2: Fix mmap +
On Tue, May 23, 2023 at 09:21:56AM -0700, Christoph Hellwig wrote:
> On Tue, May 23, 2023 at 03:34:31PM +0200, Jan Kara wrote:
> > I've checked the code and AFAICT it is all indeed handled. BTW, I've now
> > remembered that GFS2 has dealt with the same deadlocks - b01b2d72da25
> > ("gfs2: Fix mmap
so this patch
updates all the callers.
Signed-off-by: Kent Overstreet
Cc: Andrew Morton
Cc: Tejun Heo
Cc: Stefan Richter
Cc: David Airlie
Cc: Roland Dreier
Cc: Sean Hefty
Cc: Hal Rosenstock
Cc: Steve Wise
Cc: Hoang-Nam Nguyen
Cc: Christoph Raisch
Cc: Mike Marciniszyn
Cc: Doug Gilbert
so this patch
updates all the callers.
Signed-off-by: Kent Overstreet
Cc: Andrew Morton
Cc: Tejun Heo
Cc: Stefan Richter
Cc: David Airlie
Cc: Roland Dreier
Cc: Sean Hefty
Cc: Hal Rosenstock
Cc: Steve Wise
Cc: Hoang-Nam Nguyen
Cc: Christoph Raisch
Cc: Mike Marciniszyn
Cc: Doug Gilbert
On Wed, Jun 19, 2013 at 01:18:32AM -0700, Tejun Heo wrote:
> Hello, Kent.
>
> On Tue, Jun 18, 2013 at 05:02:30PM -0700, Kent Overstreet wrote:
> > With the new ida implementation, that doesn't work anymore - the new ida
> > code grows its bitmap tree by reallocating th
so this patch
updates all the callers.
Signed-off-by: Kent Overstreet
Cc: Andrew Morton
Cc: Tejun Heo
Cc: Stefan Richter
Cc: David Airlie
Cc: Roland Dreier
Cc: Sean Hefty
Cc: Hal Rosenstock
Cc: Steve Wise
Cc: Hoang-Nam Nguyen
Cc: Christoph Raisch
Cc: Mike Marciniszyn
Cc: Doug Gilbert
quot;
Cc: Greg Kroah-Hartman
Cc: Alexander Viro
Cc: Steven Whitehouse
Cc: Kent Overstreet
Cc: Herton Ronaldo Krzesinski
Cc: Tejun Heo
Cc: Andrew Morton
Cc: Guo Chao
Cc: Asai Thambi S P
Cc: Selvan Mani
Cc: Sam Bradshaw
Cc: Matthew Wilcox
Cc: Keith Busch
Cc: Stephen Hemminger
Cc: Quoc-Son
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