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mm: zswap: modify zswap_compress() to accept a page instead of a folio

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For zswap_store() to be able to store a large folio by compressing it one
page at a time, zswap_compress() needs to accept a page as input.  This
will allow us to iterate through each page in the folio in zswap_store(),
compress it and store it in the zpool.

Link: https://lkml.kernel.org/r/20241001053222.6944-3-kanchana.p.sridhar@intel.com
Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
Reviewed-by: Nhat Pham <nphamcs@gmail.com>
Reviewed-by: Chengming Zhou <chengming.zhou@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Yosry Ahmed <yosryahmed@google.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Wajdi Feghali <wajdi.k.feghali@intel.com>
Cc: "Zou, Nanhai" <nanhai.zou@intel.com>
Cc: Barry Song <21cnbao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kanchana P Sridhar 2024-09-30 22:32:17 -07:00 committed by Andrew Morton
parent 69bad21551
commit 3d0f560a36
1 changed files with 3 additions and 3 deletions
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6
mm/zswap.c
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@ -875,7 +875,7 @@ static int zswap_cpu_comp_dead(unsigned int cpu, struct hlist_node *node)
return 0;
}
static bool zswap_compress(struct folio *folio, struct zswap_entry *entry)
static bool zswap_compress(struct page *page, struct zswap_entry *entry)
{
struct crypto_acomp_ctx *acomp_ctx;
struct scatterlist input, output;
@ -893,7 +893,7 @@ static bool zswap_compress(struct folio *folio, struct zswap_entry *entry)
dst = acomp_ctx->buffer;
sg_init_table(&input, 1);
sg_set_folio(&input, folio, PAGE_SIZE, 0);
sg_set_page(&input, page, PAGE_SIZE, 0);
/*
* We need PAGE_SIZE * 2 here since there maybe over-compression case,
@ -1457,7 +1457,7 @@ bool zswap_store(struct folio *folio)
mem_cgroup_put(memcg);
}
if (!zswap_compress(folio, entry))
if (!zswap_compress(&folio->page, entry))
goto put_pool;
entry->swpentry = swp;