[OpenAFS-devel] reproducible problem during cache flush

[chas williams]

>if we remove the AFS_VM_RDWR_ENV from particular places in afs_vnop_read.c
>we should get prefetch on linux as well?

something like the following:

Index: src/afs/VNOPS/afs_vnop_read.c
===================================================================
RCS file: /cvs/openafs/src/afs/VNOPS/afs_vnop_read.c,v
retrieving revision 1.5.4.1
diff -u -d -b -w -r1.5.4.1 afs_vnop_read.c
--- src/afs/VNOPS/afs_vnop_read.c	2002/07/10 20:04:36	1.5.4.1
+++ src/afs/VNOPS/afs_vnop_read.c	2002/07/30 18:13:50
@@ -263,7 +263,7 @@
      * to it in case we need to do a prefetch.
      */
     if (tdc) {
-#ifndef	AFS_VM_RDWR_ENV
+#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_LINUX22_ENV)
 	/* try to queue prefetch, if needed */
 	if (!(tdc->flags & DFNextStarted) && !noLock) {
 	    afs_PrefetchChunk(avc, tdc, acred, &treq);
@@ -446,7 +446,7 @@
 	    hadd32(afs_indexCounter, 1);
 
 	    if (!noLock) {
-#ifndef	AFS_VM_RDWR_ENV
+#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_LINUX22_ENV)
 		if (!(code = afs_InitReq(&treq, acred))&& (!(tdc->flags & DFNextStarted)))
 		    afs_PrefetchChunk(avc, tdc, acred, &treq);
 #endif
Index: src/afs/VNOPS/afs_vnop_write.c
===================================================================
RCS file: /cvs/openafs/src/afs/VNOPS/afs_vnop_write.c,v
retrieving revision 1.8.2.7
diff -u -d -b -w -r1.8.2.7 afs_vnop_write.c
--- src/afs/VNOPS/afs_vnop_write.c	2002/07/22 23:14:54	1.8.2.7
+++ src/afs/VNOPS/afs_vnop_write.c	2002/07/30 18:13:50
@@ -283,7 +283,7 @@
 	if (filePos > avc->m.Length)
 	    avc->m.Length = filePos;
 #endif
-#ifndef AFS_VM_RDWR_ENV
+#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_LINUX22_ENV)
 	/*
 	 * If write is implemented via VM, afs_DoPartialWrite() is called from
 	 * the high-level write op.
@@ -580,7 +580,7 @@
 	}
 #endif
 	osi_UFSClose(tfile);
-#ifndef	AFS_VM_RDWR_ENV
+#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_LINUX22_ENV)
 	/*
 	 * If write is implemented via VM, afs_DoPartialWrite() is called from
 	 * the high-level write op.