Messages in this thread | | | Date | Thu, 21 Nov 2019 11:15:32 +0100 | From | Michal Suchánek <> | Subject | Re: [PATCH v2 6/8] bdev: add open_finish. |
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On Thu, Oct 24, 2019 at 06:12:54AM -0700, Matthew Wilcox wrote: > On Thu, Oct 24, 2019 at 10:55:14AM +0200, Michal Suchánek wrote: > > On Wed, Oct 23, 2019 at 07:22:32PM -0700, Christoph Hellwig wrote: > > > On Wed, Oct 23, 2019 at 02:52:45PM +0200, Michal Suchanek wrote: > > > > Opening a block device may require a long operation such as waiting for > > > > the cdrom tray to close. Performing this operation with locks held locks > > > > out other attempts to open the device. These processes waiting to open > > > > the device are not killable. > > You can use mutex_lock_killable() to fix that. > That fixes only half of the problem.
Other processes still cannot access the device while you wait on mutex_lock_killable
Thanks
Michal
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