mm/shmem, swap: simplify swapin path and result handling

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Slightly tidy up the different handling of swap in and error handling for
SWP_SYNCHRONOUS_IO and non-SWP_SYNCHRONOUS_IO devices.  Now swapin will
always use either shmem_swap_alloc_folio or shmem_swapin_cluster, then
check the result.

Simplify the control flow and avoid a redundant goto label.

Link: https://lkml.kernel.org/r/20250728075306.12704-7-ryncsn@gmail.com
Signed-off-by: Kairui Song <kasong@tencent.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Barry Song <baohua@kernel.org>
Cc: Chris Li <chrisl@kernel.org>
Cc: Dev Jain <dev.jain@arm.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kemeng Shi <shikemeng@huaweicloud.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Nhat Pham <nphamcs@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

This commit is contained in:

Kairui Song 2025-07-28 15:53:04 +08:00 • committed by Andrew Morton

parent 69805ea79d

commit 1326359f22

1 changed files with 19 additions and 26 deletions

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mm/shmem.c

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