diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-10-01 18:57:50 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-10-09 17:19:55 -0400 |
| commit | 6d2b2966869142660f46d1e06cf9d15c3debcf77 (patch) | |
| tree | 21520382d3ca7ac3720bcf84dd76a1c3fb94331a /fs/nfs/inode.c | |
| parent | 60ccd4ec4170c9487e3792322626acd160197bce (diff) | |
| download | op-kernel-dev-6d2b2966869142660f46d1e06cf9d15c3debcf77.zip op-kernel-dev-6d2b2966869142660f46d1e06cf9d15c3debcf77.tar.gz | |
NFS: Reset nfsi->last_updated only if the attribute changed
Otherwise set it to nfsi->read_cache_jiffies in order to prevent jiffy
wraparound issues.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
| -rw-r--r-- | fs/nfs/inode.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 1c23d3a..9d012a6 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -956,7 +956,6 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) * Update the read time so we don't revalidate too often. */ nfsi->read_cache_jiffies = fattr->time_start; - nfsi->last_updated = now; nfsi->cache_validity &= ~(NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ATIME | NFS_INO_REVAL_PAGECACHE); @@ -1027,10 +1026,18 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr) nfs_inc_stats(inode, NFSIOS_ATTRINVALIDATE); nfsi->attrtimeo = NFS_MINATTRTIMEO(inode); nfsi->attrtimeo_timestamp = now; - } else if (!time_in_range(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) { - if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode)) - nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode); - nfsi->attrtimeo_timestamp = now; + nfsi->last_updated = now; + } else { + if (!time_in_range(now, nfsi->attrtimeo_timestamp, nfsi->attrtimeo_timestamp + nfsi->attrtimeo)) { + if ((nfsi->attrtimeo <<= 1) > NFS_MAXATTRTIMEO(inode)) + nfsi->attrtimeo = NFS_MAXATTRTIMEO(inode); + nfsi->attrtimeo_timestamp = now; + } + /* + * Avoid jiffy wraparound issues with nfsi->last_updated + */ + if (!time_in_range(nfsi->last_updated, nfsi->read_cache_jiffies, now)) + nfsi->last_updated = nfsi->read_cache_jiffies; } invalid &= ~NFS_INO_INVALID_ATTR; /* Don't invalidate the data if we were to blame */ |
