fix: bad read by wrong data region

User io may involve discontinuous segments in different chunks. Bad read is produced by merging them into continuous one. That is what Region does. This pr separate discontinuous segments into different regions, avoiding merging forcibly. Signed-off-by: 泰友 <[email protected]>
dragonflyoss · Mar 27, 2024 · 58de577 · 58de577
1 parent 02bd6a7
commit 58de577
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/storage/src/cache/cachedfile.rs b/storage/src/cache/cachedfile.rs
@@ -1580,7 +1580,7 @@ mod tests {
 
         let tag = BlobIoTag::User(BlobIoSegment {
             offset: 0x1800,
-            len: 0x1800,
+            len: 0x800,
         });
         state
             .push(RegionType::CacheFast, 0x1000, 0x2000, tag, None)
@@ -1597,8 +1597,8 @@ mod tests {
         assert_eq!(state.regions.len(), 1);
 
         let tag = BlobIoTag::User(BlobIoSegment {
-            offset: 0x0000,
-            len: 0x2000,
+            offset: 0x0001,
+            len: 0x1fff,
         });
         state
             .push(RegionType::CacheSlow, 0x5000, 0x2000, tag, None)