Re: [PATCH -next] block: Revert "block: increase BLKCG_MAX_POLS"

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Hi,

在 2023/02/03 15:59, Oleksandr Natalenko 写道:
Hello.

On pátek 3. února 2023 9:13:57 CET Yu Kuai wrote:
From: Yu Kuai <yukuai3@xxxxxxxxxx>

This reverts commit ec645dc96699ea6c37b6de86c84d7288ea9a4ddf.

This can save some memory, because after commit 0f7839955114 ("Revert
"block/mq-deadline: Add cgroup support""), there are total 5 policies.

Signed-off-by: Yu Kuai <yukuai3@xxxxxxxxxx>
---
  include/linux/blkdev.h | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 41a41561b773..c6861c7fdad9 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -54,7 +54,7 @@ extern struct class block_class;
   * Maximum number of blkcg policies allowed to be registered concurrently.
   * Defined here to simplify include dependency.
   */
-#define BLKCG_MAX_POLS		6
+#define BLKCG_MAX_POLS		5
#define DISK_MAX_PARTS 256
  #define DISK_NAME_LEN			32

Last time I asked about reverting this change, it was suggested that we may keep it [1].

[1] https://lore.kernel.org/linux-block/1dc051a8-4d59-8137-2406-f74026b170bd@xxxxxxxxx/


I see now, thanks for the reply.

Kuai




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