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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-05-09 09:00:17 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-05-09 17:57:58 -0400
commite62c2bba1fb7cf068eb78d731da46e4447a9efb1 (patch)
treebce53fe724400f7cfa1ae4621aafc6aa70bd564d /fs
parent38cb162b7585d837083b8365da1eb32687c5164c (diff)
downloadlinux-e62c2bba1fb7cf068eb78d731da46e4447a9efb1.tar.bz2
NFS: Fix a jiffie wraparound issue
dentry verifiers are always set to the parent directory's cache_change_attribute. There is no reason to be testing for anything other than equality when we're trying to find out if the dentry has been checked since the last time the directory was modified. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/dir.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 625d8e5fb39d..fced7d1d48de 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -650,12 +650,17 @@ int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
*/
static int nfs_check_verifier(struct inode *dir, struct dentry *dentry)
{
+ unsigned long verf;
+
if (IS_ROOT(dentry))
return 1;
+ verf = (unsigned long)dentry->d_fsdata;
if ((NFS_I(dir)->cache_validity & NFS_INO_INVALID_ATTR) != 0
- || nfs_attribute_timeout(dir))
+ || nfs_attribute_timeout(dir)
+ || nfs_caches_unstable(dir)
+ || verf != NFS_I(dir)->cache_change_attribute)
return 0;
- return nfs_verify_change_attribute(dir, (unsigned long)dentry->d_fsdata);
+ return 1;
}
static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
@@ -665,8 +670,7 @@ static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
static void nfs_refresh_verifier(struct dentry * dentry, unsigned long verf)
{
- if (time_after(verf, (unsigned long)dentry->d_fsdata))
- nfs_set_verifier(dentry, verf);
+ nfs_set_verifier(dentry, verf);
}
/*