From f19451410097bda033143371ab39deb6bb974057 Mon Sep 17 00:00:00 2001
From: Shaowei Song <songshaowei.ssw@antgroup.com>
Date: Sat, 14 Sep 2024 06:45:51 +0000
Subject: [PATCH] Optimize the page cache within a `RamInode`

---
 kernel/src/fs/ramfs/fs.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/src/fs/ramfs/fs.rs b/kernel/src/fs/ramfs/fs.rs
index 33282806e..6e04e0d84 100644
--- a/kernel/src/fs/ramfs/fs.rs
+++ b/kernel/src/fs/ramfs/fs.rs
@@ -519,7 +519,11 @@ impl RamInode {
 impl PageCacheBackend for RamInode {
     fn read_page_async(&self, _idx: usize, frame: &Frame) -> Result<BioWaiter> {
         // Initially, any block/page in a RamFs inode contains all zeros
-        frame.writer().fill(0);
+        frame
+            .writer()
+            .to_fallible()
+            .fill_zeros(frame.size())
+            .unwrap();
         Ok(BioWaiter::new())
     }