From: Andrew Deason <adeason@sinenomine.net>
Date: Thu, 27 Aug 2009 17:43:03 +0000 (-0500)
Subject: Fix cache tracking for small fragsizes
X-Git-Tag: openafs-stable-1_4_12pre1~40
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=71c84e7453c24cb5c9b1d46462dd6253f1999654;p=packages%2Fo%2Fopenafs.git

Fix cache tracking for small fragsizes

The tracked amount of disk cache used by a client can be incorrect when
afs_fsfragsize is tuned to below 1023. Since we round up to the next
nearest afs_fsfragsize+1 then round down to the kb, if afs_fsfragsize+1
< 1kb, we can undershoot the cache usage.

This enforces afs_fsfragsize to always be at least 1023.

Change-Id: I2f2f0b14da3f1a57348497f0a372c89388818e9c
Reviewed-on: http://gerrit.openafs.org/338
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Reviewed-on: http://gerrit.openafs.org/960
---

diff --git a/src/afs/afs_init.c b/src/afs/afs_init.c
index 970c1a8db..728bea658 100644
--- a/src/afs/afs_init.c
+++ b/src/afs/afs_init.c
@@ -468,6 +468,8 @@ afs_InitCacheInfo(register char *afile)
 #endif /* AFS_LINUX20_ENV */
     AFS_RELE(filevp);
 #endif /* AFS_LINUX22_ENV */
+    if (afs_fsfragsize < 1023)
+	afs_fsfragsize = 1023;
     tfile = osi_UFSOpen(cacheInode);
     afs_osi_Stat(tfile, &tstat);
     cacheInfoModTime = tstat.mtime;