On Tue, 4 Feb 2014, kosaki.motoh...@gmail.com wrote:
> From: KOSAKI Motohiro
>
> To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
> During aio buffer migration, we have a possibility to see the
> following call stack.
>
> aio_migratepage [disable interrupt]
>
From: KOSAKI Motohiro
To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
During aio buffer migration, we have a possibility to see the
following call stack.
aio_migratepage [disable interrupt]
migrate_page_copy
clear_page_dirty_for_io
set_page_dirty
From: KOSAKI Motohiro
To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
spin_lock_irqsave is a safer alternative. Luckily, now there is no
caller that has such usage but it would be nice to fix.
Reported-by: David Rientjes rient...@google.com>
Signed-off-by: KOSAKI Motohiro
On Tue, Feb 4, 2014 at 11:58 AM, wrote:
> From: KOSAKI Motohiro
>
> To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
> spin_lock_irqsave is a safer alternative. Luckily, now there is no
> caller that has such usage but it would be nice to fix.
>
> Reported-by: David Rientjes
On Tue, Feb 4, 2014 at 11:58 AM, kosaki.motoh...@gmail.com wrote:
From: KOSAKI Motohiro kosaki.motoh...@jp.fujitsu.com
To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
spin_lock_irqsave is a safer alternative. Luckily, now there is no
caller that has such usage but it
From: KOSAKI Motohiro kosaki.motoh...@jp.fujitsu.com
To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
spin_lock_irqsave is a safer alternative. Luckily, now there is no
caller that has such usage but it would be nice to fix.
Reported-by: David Rientjes rient...@google.com
From: KOSAKI Motohiro kosaki.motoh...@jp.fujitsu.com
To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
During aio buffer migration, we have a possibility to see the
following call stack.
aio_migratepage [disable interrupt]
migrate_page_copy
clear_page_dirty_for_io
On Tue, 4 Feb 2014, kosaki.motoh...@gmail.com wrote:
From: KOSAKI Motohiro kosaki.motoh...@jp.fujitsu.com
To use spin_{un}lock_irq is dangerous if caller disabled interrupt.
During aio buffer migration, we have a possibility to see the
following call stack.
aio_migratepage [disable
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