[patch 053/155] mm/swapfile.c: fix comments for swapcache_prepare

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From: Chen Wandun <chenwandun@xxxxxxxxxx>
Subject: mm/swapfile.c: fix comments for swapcache_prepare

The -EEXIST returned by __swap_duplicate means there is a swap cache
instead -EBUSY

Link: http://lkml.kernel.org/r/20200212145754.27123-1-chenwandun@xxxxxxxxxx
Signed-off-by: Chen Wandun <chenwandun@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/swapfile.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/swapfile.c~mm-swapfilec-fix-comments-for-swapcache_prepare
+++ a/mm/swapfile.c
@@ -3475,7 +3475,7 @@ int swap_duplicate(swp_entry_t entry)
  *
  * Called when allocating swap cache for existing swap entry,
  * This can return error codes. Returns 0 at success.
- * -EBUSY means there is a swap cache.
+ * -EEXIST means there is a swap cache.
  * Note: return code is different from swap_duplicate().
  */
 int swapcache_prepare(swp_entry_t entry)
_




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