mm: split swap_type_of

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swap_type_of is used for two entirely different purposes:

 (1) check what swap type a given device/offset corresponds to
 (2) find the first available swap device that can be written to

Mixing both in a single function creates an unreadable mess.  Create two
separate functions instead, and switch both to pass a dev_t instead of
a struct block_device to further simplify the code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

...

This commit is contained in:

Christoph Hellwig 2020-09-21 09:19:56 +02:00 • committed by Jens Axboe

parent bb3247a399

commit 21bd900572

4 changed files with 35 additions and 40 deletions

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3

include/linux/swap.h

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17

kernel/power/swap.c

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16

kernel/power/user.c

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39

mm/swapfile.c

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