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* Re: [ANNOUNCE] v5.6.17-rt10
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@ 2020-06-16 16:47 ` Sebastian Andrzej Siewior
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From: Sebastian Andrzej Siewior @ 2020-06-16 16:47 UTC (permalink / raw)
  To: Thomas Gleixner; +Cc: LKML, linux-rt-users, Steven Rostedt

On 2020-06-16 14:45:03 [+0200], To Thomas Gleixner wrote:
> Dear RT folks!
> I'm pleased to announce the v5.6.17-rt10 patch set. 
> Changes since v5.6.17-rt9:
>   - Add the seqcount series by Ahmed S. Darwish.
>     The series annotates the lock protecting the struct seqcount against
>     multiple writer. In RT the lock annotation can be utilized to block
>     on in case the writer is active. This is the same technique that is
>     used now but we can avoid replacing the seqcount with a seqlock and
>     have code that is closer to mainline.
>     As part of the integration I dropped seqcount replacements which
>     are no longer needed, like in NFS or vfs.
>   - Added down_read_non_owner() for RT. There is no owner tracking since
>     we allow multiple reader locking on struct rw_semaphore. This
>     removes on patch from the NFS subsystem and allows to enable bcache.
>   - Drop the lock raw_spinlock_t from struct hlist_bl_head. The struct
>     hlist_bl_head uses bit_spin_lock() for locking so we are still
>     spinning.
> Known issues
>      - It has been pointed out that due to changes to the printk code the
>        internal buffer representation changed. This is only an issue if tools
>        like `crash' are used to extract the printk buffer from a kernel memory
>        image.
> The delta patch against v5.6.17-rt9 is appended below and can be found here:
> You can get this release via the git tree at:
>     git:// v5.6.17-rt10
> The RT patch against v5.6.17 can be found here:
> The split quilt queue is available at:

Again without the delta diff since the email was too huge. It can be
still look on at


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