[PATCH v4] page_io: zswap: do not crash the kernel on decompression failure (fix)

[Nhat Pham]

Fix the documentation of zswap_load() - should say load a folio (rather
than a page), and should be explicit that the folio is unlocked and
marked up-to-date in the success case.

Suggested-by: Yosry Ahmed <yosry.ahmed@xxxxxxxxx>
Signed-off-by: Nhat Pham <nphamcs@xxxxxxxxx>
---
 mm/zswap.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mm/zswap.c b/mm/zswap.c
index 799b22c19b5e..c470073c17cc 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1629,10 +1629,11 @@ bool zswap_store(struct folio *folio)
 }
 
 /**
- * zswap_load() - load a page from zswap
+ * zswap_load() - load a folio from zswap
  * @folio: folio to load
  *
- * Return: 0 on success, or one of the following error codes:
+ * Return: 0 on success, with the folio unlocked and marked up-to-date, or one
+ * of the following error codes:
  *
  *  -EIO: if the swapped out content was in zswap, but could not be loaded
  *  into the page due to a decompression failure. The folio is unlocked, but
-- 
2.43.5