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authorTrond Myklebust <Trond.Myklebust@netapp.com>2007-09-27 10:07:31 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2007-10-09 17:18:55 -0400
commit17cadc95372e28024be0874e67329c1862912c5d (patch)
tree0785ba140643d87c23e7bca67d1f2522214a0d12 /fs/nfs
parente323ea46d95d7f8c789effd1194dfc120284dbbd (diff)
NFS: Don't force a dcache revalidation if nfs_wcc_update_inode succeeds
The reason is that if the weak cache consistency update was successful, then we know that our client must be the only one that changed the directory, and we've already updated the dcache to reflect the change. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/inode.c11
-rw-r--r--fs/nfs/nfs4proc.c7
2 files changed, 8 insertions, 10 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index f1f6639f52b5..7e73edc1751f 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -791,24 +791,18 @@ void nfs_end_data_update(struct inode *inode)
static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
struct nfs_inode *nfsi = NFS_I(inode);
- unsigned long now = jiffies;
/* If we have atomic WCC data, we may update some attributes */
if ((fattr->valid & NFS_ATTR_WCC) != 0) {
- if (timespec_equal(&inode->i_ctime, &fattr->pre_ctime)) {
+ if (timespec_equal(&inode->i_ctime, &fattr->pre_ctime))
memcpy(&inode->i_ctime, &fattr->ctime, sizeof(inode->i_ctime));
- nfsi->cache_change_attribute = now;
- }
if (timespec_equal(&inode->i_mtime, &fattr->pre_mtime)) {
memcpy(&inode->i_mtime, &fattr->mtime, sizeof(inode->i_mtime));
if (S_ISDIR(inode->i_mode))
nfsi->cache_validity |= NFS_INO_INVALID_DATA;
- nfsi->cache_change_attribute = now;
}
- if (inode->i_size == fattr->pre_size && nfsi->npages == 0) {
+ if (inode->i_size == fattr->pre_size && nfsi->npages == 0)
inode->i_size = fattr->size;
- nfsi->cache_change_attribute = now;
- }
}
}
@@ -919,6 +913,7 @@ int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if (unlikely((fattr->valid & NFS_ATTR_FATTR) == 0)) {
spin_lock(&inode->i_lock);
nfsi->cache_validity |= NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE;
+ nfsi->cache_change_attribute = jiffies;
spin_unlock(&inode->i_lock);
goto out;
}
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 0e366a31f63b..871c102d9bdf 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -208,9 +208,12 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
struct nfs_inode *nfsi = NFS_I(dir);
spin_lock(&dir->i_lock);
- nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
- if (cinfo->before == nfsi->change_attr && cinfo->atomic)
+ if (cinfo->after != nfsi->change_attr) {
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
+ if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
+ nfsi->cache_change_attribute = jiffies;
nfsi->change_attr = cinfo->after;
+ }
spin_unlock(&dir->i_lock);
}