[ros-diffs] [hpoussin] 43005: Remove code dealing with FAT cache. It is never used

Author: hpoussin
Date: Sun Sep  6 18:43:03 2009
New Revision: 43005

URL: http://svn.reactos.org/svn/reactos?rev=43005&view=rev
Log:
Remove code dealing with FAT cache. It is never used

Modified:
    trunk/reactos/boot/freeldr/freeldr/disk/ramdisk.c
    trunk/reactos/boot/freeldr/freeldr/fs/fat.c

Modified: trunk/reactos/boot/freeldr/freeldr/disk/ramdisk.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/disk/r...
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/disk/ramdisk.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/disk/ramdisk.c [iso-8859-1] Sun Sep  6 18:43:03 2009
@@ -16,7 +16,6 @@

PVOID gRamDiskBase;
 ULONG gRamDiskSize;
-extern BOOLEAN gCacheEnabled;

/* FUNCTIONS ******************************************************************/

@@ -174,11 +173,6 @@
         MachVtbl.DiskGetCacheableBlockCount = RamDiskGetCacheableBlockCount;

//
-        // Also disable cached FAT reads
-        //
-        gCacheEnabled = FALSE;
-        
-        //
         // Switch to ramdisk boot partition
         //
         BootDrive = 0x49;

Modified: trunk/reactos/boot/freeldr/freeldr/fs/fat.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/boot/freeldr/freeldr/fs/fat...
==============================================================================
--- trunk/reactos/boot/freeldr/freeldr/fs/fat.c [iso-8859-1] (original)
+++ trunk/reactos/boot/freeldr/freeldr/fs/fat.c [iso-8859-1] Sun Sep  6 18:43:03 2009
@@ -35,8 +35,6 @@
 BOOLEAN	FatReadPartialCluster(ULONG ClusterNumber, ULONG StartingOffset, ULONG Length, PVOID Buffer);
 BOOLEAN	FatReadFile(PFAT_FILE_INFO FatFileInfo, ULONG BytesToRead, ULONG* BytesRead, PVOID Buffer);
 BOOLEAN	FatReadVolumeSectors(ULONG DriveNumber, ULONG SectorNumber, ULONG SectorCount, PVOID Buffer);
-
-BOOLEAN gCacheEnabled = FALSE;

ULONG			BytesPerSector;			/* Number of bytes per sector */
 ULONG			SectorsPerCluster;		/* Number of sectors per cluster */
@@ -350,30 +348,6 @@
    }
    MmHeapFree(FatVolumeBootSector);

-	if (gCacheEnabled)
-	{
-		//
-		// Initialize the disk cache for this drive
-		//
-		if (!CacheInitializeDrive(DriveNumber))
-		{
-			return FALSE;
-		}
-
-		//
-		// Force the FAT sectors into the cache
-		// as long as it is FAT12 or FAT16. FAT32 can
-		// have a multi-megabyte FAT so we don't want that.
-		//
-		if (FatType != FAT32 && FatType != FATX32)
-		{
-			if (!CacheForceDiskSectorsIntoCache(DriveNumber, ActiveFatSectorStart, SectorsPerFat))
-			{
-				return FALSE;
-			}
-		}
-	}
-	else
    {
    	GEOMETRY DriveGeometry;
    	ULONG BlockSize;
@@ -1379,24 +1353,17 @@

BOOLEAN FatReadVolumeSectors(ULONG DriveNumber, ULONG SectorNumber, ULONG SectorCount, PVOID Buffer)
 {
-	if (gCacheEnabled)
-	{
-		return CacheReadDiskSectors(DriveNumber, SectorNumber + FatVolumeStartSector, SectorCount, Buffer);
-	}
-	else
-	{
-		// Now try to read in the block
-		if (!MachDiskReadLogicalSectors(DriveNumber, SectorNumber + FatVolumeStartSector, SectorCount, (PVOID)DISKREADBUFFER))
-		{
-			return FALSE;
-		}
-
-		// Copy data to the caller
-		RtlCopyMemory(Buffer, (PVOID)DISKREADBUFFER, SectorCount * BytesPerSector);
-
-		// Return success
-		return TRUE;
-	}
+	// Now try to read in the block
+	if (!MachDiskReadLogicalSectors(DriveNumber, SectorNumber + FatVolumeStartSector, SectorCount, (PVOID)DISKREADBUFFER))
+	{
+		return FALSE;
+	}
+
+	// Copy data to the caller
+	RtlCopyMemory(Buffer, (PVOID)DISKREADBUFFER, SectorCount * BytesPerSector);
+
+	// Return success
+	return TRUE;
 }

LONG FatClose(ULONG FileId)