From 202c4ea660266f232837a7dd5543cd7c0344f588 Mon Sep 17 00:00:00 2001
From: Hartmut Reuter <reuter@rzg.mpg.de>
Date: Thu, 28 Jul 2005 22:33:57 +0000
Subject: [PATCH] STABLE14-dir-buffers-use-nullidx-as-none-20050721

FIXES 20214

since 0 is a valid number use -1 (NULLIDX)


(cherry picked from commit da5187d4b4093b32f811631d3cc57c746e4b23a3)
---
 src/afs/afs_buffer.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/afs/afs_buffer.c b/src/afs/afs_buffer.c
index f8894e7aa5..70903a14ba 100644
--- a/src/afs/afs_buffer.c
+++ b/src/afs/afs_buffer.c
@@ -130,7 +130,7 @@ DInit(int abuffers)
 #endif
 	/* Fill in each buffer with an empty indication. */
 	tb = &Buffers[i];
-	tb->fid = 0;
+	tb->fid = NULLIDX;
 	tb->inode = 0;
 	tb->accesstime = 0;
 	tb->lockers = 0;
@@ -226,7 +226,7 @@ DRead(register struct dcache *adc, register int page)
     MReleaseWriteLock(&afs_bufferLock);
     tb->lockers++;
     if (page * AFS_BUFFER_PAGESIZE >= adc->f.chunkBytes) {
-	tb->fid = 0;
+	tb->fid = NULLIDX;
 	tb->inode = 0;
 	tb->lockers--;
 	MReleaseWriteLock(&tb->lock);
@@ -238,7 +238,7 @@ DRead(register struct dcache *adc, register int page)
 		      AFS_BUFFER_PAGESIZE);
     afs_CFileClose(tfile);
     if (code < AFS_BUFFER_PAGESIZE) {
-	tb->fid = 0;
+	tb->fid = NULLIDX;
 	tb->inode = 0;
 	tb->lockers--;
 	MReleaseWriteLock(&tb->lock);
@@ -450,7 +450,7 @@ DZap(struct dcache *adc)
 	for (tb = phTable[pHash(adc->index, i)]; tb; tb = tb->hashNext)
 	    if (tb->fid == adc->index) {
 		MObtainWriteLock(&tb->lock, 262);
-		tb->fid = 0;
+		tb->fid = NULLIDX;
 		tb->inode = 0;
 		tb->dirty = 0;
 		MReleaseWriteLock(&tb->lock);