remove split entry

libsql-wal/src/log.rs

@@ -146,13 +146,6 @@ impl LogHeader {
     }
 }
 
-/// split the index entry value into it's components: (frame_no, offset)
-pub fn index_entry_split(k: u64) -> (u32, u32) {
-    let offset = (k & u32::MAX as u64) as u32;
-    let frame_no = (k >> 32) as u32;
-    (frame_no, offset)
-}
-
 #[repr(C)]
 #[derive(Debug, zerocopy::AsBytes, zerocopy::FromBytes, zerocopy::FromZeroes)]
 pub struct FrameHeader {
@@ -559,9 +552,8 @@ impl<F: FileExt> SealedLog<F> {
         }
 
         let index = self.index();
-        if let Some(value) = index.get(page_no.to_be_bytes()) {
-            let (_f, offset) = index_entry_split(value);
-            self.read_page_offset(offset, buf)?;
+        if let Some(offset) = index.get(page_no.to_be_bytes()) {
+            self.read_page_offset(offset as u32, buf)?;
 
             return Ok(true);
         }

libsql-wal/src/segment_list.rs

@@ -9,7 +9,7 @@ use zerocopy::{AsBytes, FromZeroes};
 
 use crate::error::Result;
 use crate::fs::file::FileExt;
-use crate::log::{index_entry_split, Frame, SealedLog};
+use crate::log::{Frame, SealedLog};
 
 struct SegmentLink<F> {
     log: SealedLog<F>,
@@ -124,7 +124,7 @@ impl<F> SegmentList<F> {
             let page_no = u32::from_be_bytes(k.try_into().unwrap());
             let v = v.iter().min_by_key(|i| i.index).unwrap();
             let seg = &segs[v.index];
-            let (_, offset) = index_entry_split(v.value);
+            let offset = v.value as u32;
             seg.log.read_frame_offset(offset, &mut buf)?;
             assert_eq!(buf.header().page_no(), page_no);
             last_replication_index = last_replication_index.max(buf.header().frame_no());