| Date | Sat, 1 Nov 2014 17:18:10 -0600 | From | Jens Axboe <> | Subject | Re: [PATCH 3.2 023/102] block: Fix dev_t minor allocation lifetime |
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On 2014-11-01 16:28, Ben Hutchings wrote: > 3.2.64-rc1 review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Keith Busch <keith.busch@intel.com> > > commit 2da78092dda13f1efd26edbbf99a567776913750 upstream. > > Releases the dev_t minor when all references are closed to prevent > another device from acquiring the same major/minor. > > Since the partition's release may be invoked from call_rcu's soft-irq > context, the ext_dev_idr's mutex had to be replaced with a spinlock so > as not so sleep. > > Signed-off-by: Keith Busch <keith.busch@intel.com> > Signed-off-by: Jens Axboe <axboe@fb.com> > [bwh: Backported to 3.2: > - Adjust filename > - idr insertion API is different, and blk_alloc_devt() is preallocating > a node in a different way]
As I've noted for pretty much every stable branch so far, you have to backport commit 46f341ffcfb5 as well, if you backport this one.
-- Jens Axboe
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