[PATCHv7 6/6] io_uring: cache nodes and mapped buffers

[Keith Busch]

On Wed, Feb 26, 2025 at 12:58:21PM -0700, Jens Axboe wrote:
> On 2/26/25 12:43 PM, Jens Axboe wrote:
> > Ignore this one, that was bogus. Trying to understand a crash in here.
> 
> Just to wrap this up, it's the combining of table and cache that's the
> issue. The table can get torn down and freed while nodes are still
> alive - which is fine, but not with this change, as there's then no
> way to sanely put the cached entry.

Yes, the imu can outlive the table it came from, which means Pavel was
right to suggest I not tied the cache to the table. Thanks for pointing
this out.