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SubjectRe: Patch 0727d35de ("Make initramfs honor CONFIG_DEVTMPFS_MOUNT") breaks boot
On (09/11/17 13:45), Petr Mladek wrote:
[..]
> > Except for the second printk line: If you boot with rdinit=/bin/hush
> > then the first time you mount -t devtmpfs /dev /dev after boot (with
> > CONFIG_DEVTMPFS_MOUNT already having mounted it), you get the 0 return
> > value but the last printk() doesn't output? The second and later times
> > you repeat it, both printk() lines are output.
> >
> > What's up with printk?
> >
> > (I added the second printk because the _first_ one wasn't outputting
> > that first time. Something is happening to flush the printk() queue
> > instead of writing it out?
> Maybe, we could setup the timer via an irq_work. We already use
> this trick for flushing deferred printk and waking klogd.
> It is not nice but it would be easier than the previous mess.

printk() and printf() have similar behaviour here. both flush on \n.
so let's keep it the way it is?

-ss

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