From: Chengming Zhou <zhouchengming@bytedance.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Seth Jennings <sjenning@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Vitaly Wool <vitaly.wool@konsulko.com>,
Nhat Pham <nphamcs@gmail.com>, Chris Li <chriscli@google.com>,
Yosry Ahmed <yosryahmed@google.com>,
Dan Streetman <ddstreet@ieee.org>
Cc: linux-kernel@vger.kernel.org,
Chengming Zhou <zhouchengming@bytedance.com>,
linux-mm@kvack.org, Nhat Pham <nphamcs@gmail.com>,
Yosry Ahmed <yosryahmed@google.com>, Chris Li <chrisl@kernel.org>
Subject: [PATCH v4 4/6] mm/zswap: cleanup zswap_load()
Date: Tue, 26 Dec 2023 15:54:11 +0000 [thread overview]
Message-ID: <20231213-zswap-dstmem-v4-4-f228b059dd89@bytedance.com> (raw)
In-Reply-To: <20231213-zswap-dstmem-v4-0-f228b059dd89@bytedance.com>
After the common decompress part goes to __zswap_load(), we can cleanup
the zswap_load() a little.
Reviewed-by: Yosry Ahmed <yosryahmed@google.com>
Acked-by: Chis Li <chrisl@kernel.org> (Google)
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
mm/zswap.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/mm/zswap.c b/mm/zswap.c
index 3433bd6b3cef..86886276cb81 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1759,7 +1759,6 @@ bool zswap_load(struct folio *folio)
struct zswap_tree *tree = zswap_trees[type];
struct zswap_entry *entry;
u8 *dst;
- bool ret;
VM_WARN_ON_ONCE(!folio_test_locked(folio));
@@ -1776,19 +1775,16 @@ bool zswap_load(struct folio *folio)
dst = kmap_local_page(page);
zswap_fill_page(dst, entry->value);
kunmap_local(dst);
- ret = true;
- goto stats;
+ } else {
+ __zswap_load(entry, page);
}
- __zswap_load(entry, page);
- ret = true;
-stats:
count_vm_event(ZSWPIN);
if (entry->objcg)
count_objcg_event(entry->objcg, ZSWPIN);
spin_lock(&tree->lock);
- if (ret && zswap_exclusive_loads_enabled) {
+ if (zswap_exclusive_loads_enabled) {
zswap_invalidate_entry(tree, entry);
folio_mark_dirty(folio);
} else if (entry->length) {
@@ -1798,7 +1794,7 @@ bool zswap_load(struct folio *folio)
zswap_entry_put(tree, entry);
spin_unlock(&tree->lock);
- return ret;
+ return true;
}
void zswap_invalidate(int type, pgoff_t offset)
--
b4 0.10.1
next prev parent reply other threads:[~2023-12-26 15:55 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-26 15:54 [PATCH v4 0/6] mm/zswap: dstmem reuse optimizations and cleanups Chengming Zhou
2023-12-26 15:54 ` [PATCH v4 1/6] mm/zswap: change dstmem size to one page Chengming Zhou
2023-12-27 1:07 ` Barry Song
2023-12-27 6:11 ` Chengming Zhou
2023-12-27 6:32 ` Barry Song
2023-12-27 20:58 ` Andrew Morton
2023-12-27 23:21 ` Nhat Pham
2023-12-28 6:41 ` Chengming Zhou
2023-12-26 15:54 ` [PATCH v4 2/6] mm/zswap: reuse dstmem when decompress Chengming Zhou
2023-12-27 1:24 ` Barry Song
2023-12-27 6:32 ` Chengming Zhou
2023-12-28 8:03 ` Barry Song
2023-12-28 8:23 ` Chengming Zhou
2023-12-28 9:49 ` Herbert Xu
2024-01-03 2:57 ` [PATCH RFC 1/2] crypto: introduce acomp_is_async to expose if a acomp has a scomp backend Barry Song
2024-01-03 2:57 ` [PATCH RFC 2/2] mm/zswap: remove the memcpy if acomp is not asynchronous Barry Song
2024-01-03 2:57 ` [PATCH v4 2/6] mm/zswap: reuse dstmem when decompress Barry Song
2024-01-25 9:41 ` Herbert Xu
2024-01-27 14:41 ` Barry Song
2023-12-26 15:54 ` [PATCH v4 3/6] mm/zswap: refactor out __zswap_load() Chengming Zhou
2023-12-26 15:54 ` Chengming Zhou [this message]
2023-12-26 15:54 ` [PATCH v4 5/6] mm/zswap: cleanup zswap_writeback_entry() Chengming Zhou
2023-12-26 15:54 ` [PATCH v4 6/6] mm/zswap: change per-cpu mutex and buffer to per-acomp_ctx Chengming Zhou
2023-12-26 19:08 ` Nhat Pham
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