diff mbox series

[v7,5/6] zsmalloc: Add zpool_ops field to zs_pool to store evict handlers

Message ID 20221128191616.1261026-6-nphamcs@gmail.com (mailing list archive)
State New
Headers show
Series Implement writeback for zsmalloc | expand

Commit Message

Nhat Pham Nov. 28, 2022, 7:16 p.m. UTC 
This adds a new field to zs_pool to store evict handlers for writeback,
analogous to the zbud allocator.

Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
---
 mm/zsmalloc.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

--
2.30.2

Comments

Johannes Weiner Nov. 28, 2022, 7:27 p.m. UTC | #1 
On Mon, Nov 28, 2022 at 11:16:14AM -0800, Nhat Pham wrote:
> This adds a new field to zs_pool to store evict handlers for writeback,
> analogous to the zbud allocator.
> 
> Signed-off-by: Nhat Pham <nphamcs@gmail.com>
> Acked-by: Minchan Kim <minchan@kernel.org>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>

Sergey was happy with this too:
https://lore.kernel.org/linux-mm/Y3wh0i5r+9Gk2Okf@google.com/
Sergey Senozhatsky Nov. 29, 2022, 3:53 a.m. UTC | #2 
On (22/11/28 11:16), Nhat Pham wrote:
> This adds a new field to zs_pool to store evict handlers for writeback,
> analogous to the zbud allocator.
> 
> Signed-off-by: Nhat Pham <nphamcs@gmail.com>
> Acked-by: Minchan Kim <minchan@kernel.org>

Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
diff mbox series

Patch

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index b1bc231d94a3..d06f9150b9da 100644
--- a/mm/zsmalloc.c
+++ b/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 *name, gfp_t gfp,
 	 * 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)