This contains two small fixes that should be applied on top of patch 4
and patch 6 of my zsmalloc writeback series, respectively.
Changelog:
v6-fix:
* Add a comment explaining LRU update logic in zs_map_object.
(patch 4)
(sugegested by Sergey Senozhatsky and Johannes Weiner).
* Use get_first_page() and add cond_resched() in retry-loop.
(patch 6) (sugegested by Sergey Senozhatsky).
v6:
* Move the move-to-front logic into zs_map_object (patch 4)
(suggested by Minchan Kim).
* Small clean up for free_zspage at free_handles() call site
(patch 6) (suggested by Minchan Kim).
v5:
* Add a new patch that eliminates unused code in zpool and simplify
the logic for storing evict handler in zbud/z3fold (patch 2)
* Remove redudant fields in zs_pool (previously required by zpool)
(patch 3)
* Wrap under_reclaim and deferred handle freeing logic in CONFIG_ZPOOL
(patch 6) (suggested by Minchan Kim)
* Move a small piece of refactoring from patch 6 to patch 4.
v4:
* Wrap the new LRU logic in CONFIG_ZPOOL (patch 3).
(suggested by Minchan Kim)
v3:
* Set pool->ops = NULL when pool->zpool_ops is null (patch 4).
* Stop holding pool's lock when calling lock_zspage() (patch 5).
(suggested by Sergey Senozhatsky)
* Stop holding pool's lock when checking pool->ops and retries.
(patch 5) (suggested by Sergey Senozhatsky)
* Fix formatting issues (.shrink, extra spaces in casting removed).
(patch 5) (suggested by Sergey Senozhatsky)
v2:
* Add missing CONFIG_ZPOOL ifdefs (patch 5)
(detected by kernel test robot).
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2.30.2