mm/swap: use swap_ops to register swap device's methods

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This simplifies codes and makes logic clearer.  And also makes later any
new swap device type being added easier to handle.

Currently there are two types of swap devices: fs and bdev.

[hch@lst.de: updated for the new submit and can_merge abstraction]
Link: https://lore.kernel.org/20260713093350.2154226-6-hch@lst.de
Signed-off-by: Baoquan He <baoquan.he@linux.dev>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Chris Li <chrisl@kernel.org>
Reviewed-by: Nhat Pham <nphamcs@gmail.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Youngjun Park <youngjun.park@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Christoph Hellwig 2026-07-13 11:33:42 +02:00 • committed by Andrew Morton

parent 4e915b16de

commit 563597895e

4 changed files with 58 additions and 25 deletions

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1

include/linux/swap.h

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68

mm/page_io.c

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10

mm/swap.h

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4

mm/swapfile.c

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