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Subject[PATCH 05/15] mm/swap: print bad swap offset entry in get_swap_device
Date
If offset exceeds the si->max, print bad swap offset entry to help debug
the unexpected case.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
mm/swapfile.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index 0aee6286d6a7..d4b81ca887c0 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1272,6 +1272,7 @@ struct swap_info_struct *get_swap_device(swp_entry_t entry)
out:
return NULL;
put_out:
+ pr_err("%s: %s%08lx\n", __func__, Bad_offset, entry.val);
percpu_ref_put(&si->users);
return NULL;
}
--
2.23.0
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