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Message-ID: <20230703055850.227169-4-sidhartha.kumar@oracle.com>
Date: Sun, 2 Jul 2023 22:58:50 -0700
From: Sidhartha Kumar <sidhartha.kumar@...cle.com>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc: akpm@...ux-foundation.org, willy@...radead.org,
Sidhartha Kumar <sidhartha.kumar@...cle.com>
Subject: [PATCH 4/4] mm/memory: convert do_read_fault() to use folios
Saves one implicit call to compound_head()
Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
---
mm/memory.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index 33bf13431974c..b97c66df4adac 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4528,6 +4528,7 @@ static inline bool should_fault_around(struct vm_fault *vmf)
static vm_fault_t do_read_fault(struct vm_fault *vmf)
{
vm_fault_t ret = 0;
+ struct folio *folio = page_folio(vmf->page);
/*
* Let's call ->map_pages() first and use ->fault() as fallback
@@ -4545,9 +4546,9 @@ static vm_fault_t do_read_fault(struct vm_fault *vmf)
return ret;
ret |= finish_fault(vmf);
- unlock_page(vmf->page);
+ folio_unlock(folio);
if (unlikely(ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE | VM_FAULT_RETRY)))
- put_page(vmf->page);
+ folio_put(folio);
return ret;
}
--
2.41.0
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