+ zsmalloc-add-zpool_ops-field-to-zs_pool-to-store-evict-handlers.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

The patch titled
     Subject: zsmalloc: add zpool_ops field to zs_pool to store evict handlers
has been added to the -mm mm-unstable branch.  Its filename is
     zsmalloc-add-zpool_ops-field-to-zs_pool-to-store-evict-handlers.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zsmalloc-add-zpool_ops-field-to-zs_pool-to-store-evict-handlers.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Nhat Pham <nphamcs@gmail.com>
Subject: zsmalloc: add zpool_ops field to zs_pool to store evict handlers
Date: Fri, 18 Nov 2022 16:15:35 -0800

This adds a new field to zs_pool to store evict handlers for writeback,
analogous to the zbud allocator.

Link: https://lkml.kernel.org/r/20221119001536.2086599-6-nphamcs@gmail.com
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/zsmalloc.c |   11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--- a/mm/zsmalloc.c~zsmalloc-add-zpool_ops-field-to-zs_pool-to-store-evict-handlers
+++ a/mm/zsmalloc.c
@@ -242,6 +242,8 @@ struct zs_pool {
 #ifdef CONFIG_ZPOOL
 	/* List tracking the zspages in LRU order by most recently added object */
 	struct list_head lru;
+	struct zpool *zpool;
+	const struct zpool_ops *zpool_ops;
 #endif
 
 #ifdef CONFIG_ZSMALLOC_STAT
@@ -382,7 +384,14 @@ static void *zs_zpool_create(const char
 	 * different contexts and its caller must provide a valid
 	 * gfp mask.
 	 */
-	return zs_create_pool(name);
+	struct zs_pool *pool = zs_create_pool(name);
+
+	if (pool) {
+		pool->zpool = zpool;
+		pool->zpool_ops = zpool_ops;
+	}
+
+	return pool;
 }
 
 static void zs_zpool_destroy(void *pool)
_

Patches currently in -mm which might be from nphamcs@gmail.com are

zsmalloc-consolidate-zs_pools-migrate_lock-and-size_classs-locks.patch
zsmalloc-add-a-lru-to-zs_pool-to-keep-track-of-zspages-in-lru-order.patch
zsmalloc-add-zpool_ops-field-to-zs_pool-to-store-evict-handlers.patch
zsmalloc-implement-writeback-mechanism-for-zsmalloc.patch