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md: switch md-cluster to use md_submodle_head

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To make code cleaner, and prepare to add kconfig for bitmap.

Also remove the unsed global variables pers_lock, md_cluster_ops and
md_cluster_mod, and exported symbols register_md_cluster_operations(),
unregister_md_cluster_operations() and md_cluster_ops.

Link: https://lore.kernel.org/linux-raid/20250215092225.2427977-8-yukuai1@huaweicloud.com
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Su Yue <glass.su@suse.com>
This commit is contained in:
Yu Kuai
2025-02-15 17:22:25 +08:00
committed by Yu Kuai
parent c594de0455
commit 87a86277c9
4 changed files with 17 additions and 43 deletions
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drivers/md/md.h
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@@ -603,7 +603,7 @@ struct mddev {
mempool_t *serial_info_pool;
void (*sync_super)(struct mddev *mddev, struct md_rdev *rdev);
struct md_cluster_info *cluster_info;
const struct md_cluster_operations *cluster_ops;
struct md_cluster_operations *cluster_ops;
unsigned int good_device_nr; /* good device num within cluster raid */
unsigned int noio_flag; /* for memalloc scope API */