From 14dc5dfa08cfe64f9abd3e5d98a5e6dc08f69736 Mon Sep 17 00:00:00 2001
From: Chas Williams <chas@cmf.nrl.navy.mil>
Date: Thu, 1 Aug 2002 19:08:13 +0000
Subject: [PATCH] Clean up partial write support on Linux by calling
 afs_DoPartialWrite from afs_linux_writepage_sync.

---
 src/afs/LINUX/osi_vnodeops.c   | 11 +++++++++++
 src/afs/VNOPS/afs_vnop_write.c |  4 ++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/afs/LINUX/osi_vnodeops.c b/src/afs/LINUX/osi_vnodeops.c
index af16d8d44e..ae11f4ec2a 100644
--- a/src/afs/LINUX/osi_vnodeops.c
+++ b/src/afs/LINUX/osi_vnodeops.c
@@ -1502,13 +1502,24 @@ int afs_linux_writepage_sync(struct inode *ip, struct page *pp,
               ICL_TYPE_POINTER, pp,
               ICL_TYPE_INT32, atomic_read(&pp->count),
               ICL_TYPE_INT32, 99999);
+
     setup_uio(&tuio, &iovec, buffer, base, count, UIO_WRITE, AFS_UIOSYS);
 
     code = afs_write(vcp, &tuio, f_flags, credp, 0);
 
     vcache2inode(vcp);
 
+    if (!code && afs_stats_cmperf.cacheCurrDirtyChunks >
+		 afs_stats_cmperf.cacheMaxDirtyChunks) {
+	struct vrequest treq;
+
+	ObtainWriteLock(&vcp->lock, 533);
+	if (!afs_InitReq(&treq, credp))
+	    code = afs_DoPartialWrite(vcp, &treq);
+	ReleaseWriteLock(&vcp->lock);
+    }
     code = code ? -code : count - tuio.uio_resid;
+
     afs_Trace4(afs_iclSetp, CM_TRACE_UPDATEPAGE, ICL_TYPE_POINTER, vcp,
               ICL_TYPE_POINTER, pp,
               ICL_TYPE_INT32, atomic_read(&pp->count),
diff --git a/src/afs/VNOPS/afs_vnop_write.c b/src/afs/VNOPS/afs_vnop_write.c
index b19b244af5..0bb676cd6a 100644
--- a/src/afs/VNOPS/afs_vnop_write.c
+++ b/src/afs/VNOPS/afs_vnop_write.c
@@ -299,7 +299,7 @@ afs_MemWrite(avc, auio, aio, acred, noLock)
 #endif
 	ReleaseWriteLock(&tdc->lock);
 	afs_PutDCache(tdc);
-#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_LINUX22_ENV)
+#if !defined(AFS_VM_RDWR_ENV)
 	/*
 	 * If write is implemented via VM, afs_DoPartialWrite() is called from
 	 * the high-level write op.
@@ -618,7 +618,7 @@ afs_UFSWrite(avc, auio, aio, acred, noLock)
 	osi_UFSClose(tfile);
 	ReleaseWriteLock(&tdc->lock);
 	afs_PutDCache(tdc);
-#if !defined(AFS_VM_RDWR_ENV) || defined(AFS_LINUX22_ENV)
+#if !defined(AFS_VM_RDWR_ENV)
 	/*
 	 * If write is implemented via VM, afs_DoPartialWrite() is called from
 	 * the high-level write op.