* Re: [btrfs] c0aaf9b7a1: ltp: stuck at diotest4
[not found] <20200903062837.GA3654@xsang-OptiPlex-9020>
@ 2020-09-03 9:11 ` David Sterba
2020-09-03 13:29 ` Sang, Oliver
0 siblings, 1 reply; 2+ messages in thread
From: David Sterba @ 2020-09-03 9:11 UTC (permalink / raw)
To: kernel test robot
Cc: Goldwyn Rodrigues, David Sterba, LKML, lkp, lkp, ltp, linux-btrfs
On Thu, Sep 03, 2020 at 02:28:37PM +0800, kernel test robot wrote:
> Greeting,
>
> FYI, we noticed the following commit (built with gcc-9):
>
> commit: c0aaf9b7a114f6b75e0da97be7d99c102347a751 ("btrfs: switch to iomap_dio_rw() for dio")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
That's probably the O_DIRECT + O_(D)SYNC deadlock that was found
recently. One of the cases in diotest4 does
open(filename, O_DIRECT | O_RDWR | O_SYNC)
Fix is work in progress, thanks for the report.
^ permalink raw reply [flat|nested] 2+ messages in thread
* RE: [btrfs] c0aaf9b7a1: ltp: stuck at diotest4
2020-09-03 9:11 ` [btrfs] c0aaf9b7a1: ltp: stuck at diotest4 David Sterba
@ 2020-09-03 13:29 ` Sang, Oliver
0 siblings, 0 replies; 2+ messages in thread
From: Sang, Oliver @ 2020-09-03 13:29 UTC (permalink / raw)
To: dsterba; +Cc: Goldwyn Rodrigues, David Sterba, LKML, lkp, lkp, ltp, linux-btrfs
> -----Original Message-----
> From: David Sterba <dsterba@suse.cz>
> Sent: Thursday, September 3, 2020 5:11 PM
> To: Sang, Oliver <oliver.sang@intel.com>
> Cc: Goldwyn Rodrigues <rgoldwyn@suse.com>; David Sterba
> <dsterba@suse.com>; LKML <linux-kernel@vger.kernel.org>; lkp@lists.01.org;
> lkp <lkp@intel.com>; ltp@lists.linux.it; linux-btrfs@vger.kernel.org
> Subject: Re: [btrfs] c0aaf9b7a1: ltp: stuck at diotest4
>
> On Thu, Sep 03, 2020 at 02:28:37PM +0800, kernel test robot wrote:
> > Greeting,
> >
> > FYI, we noticed the following commit (built with gcc-9):
> >
> > commit: c0aaf9b7a114f6b75e0da97be7d99c102347a751 ("btrfs: switch to
> > iomap_dio_rw() for dio")
> > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git
> > master
>
> That's probably the O_DIRECT + O_(D)SYNC deadlock that was found recently.
> One of the cases in diotest4 does
>
> open(filename, O_DIRECT | O_RDWR | O_SYNC)
>
> Fix is work in progress, thanks for the report.
Thanks a lot for information!
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-09-03 9:11 ` [btrfs] c0aaf9b7a1: ltp: stuck at diotest4 David Sterba
2020-09-03 13:29 ` Sang, Oliver
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