NFS: Fix atime revalidation in read()

NFSv3 will correctly update atime on a read() call, so there is no need to
set the NFS_INO_INVALID_ATIME flag unless the call to nfs_refresh_inode()
fails.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 0ae263c..fc6b119 100644 (file)
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -727,9 +727,9 @@ static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
 {
        if (nfs3_async_handle_jukebox(task, data->inode))
                return -EAGAIN;
-       /* Call back common NFS readpage processing */
-       if (task->tk_status >= 0)
-               nfs_refresh_inode(data->inode, &data->fattr);
+
+       nfs_invalidate_atime(data->inode);
+       nfs_refresh_inode(data->inode, &data->fattr);
        return 0;
 }
 

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 9c27a6e..d311984 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2396,6 +2396,8 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
                rpc_restart_call(task);
                return -EAGAIN;
        }
+
+       nfs_invalidate_atime(data->inode);
        if (task->tk_status > 0)
                renew_lease(server, data->timestamp);
        return 0;

diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index cfc4130..ec3ede8 100644 (file)
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -552,6 +552,7 @@ nfs_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
 
 static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
 {
+       nfs_invalidate_atime(data->inode);
        if (task->tk_status >= 0) {
                nfs_refresh_inode(data->inode, data->res.fattr);
                /* Emulate the eof flag, which isn't normally needed in NFSv2

diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index d6e62d7..4587a86 100644 (file)
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -341,9 +341,6 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
                set_bit(NFS_INO_STALE, &NFS_FLAGS(data->inode));
                nfs_mark_for_revalidate(data->inode);
        }
-       spin_lock(&data->inode->i_lock);
-       NFS_I(data->inode)->cache_validity |= NFS_INO_INVALID_ATIME;
-       spin_unlock(&data->inode->i_lock);
        return 0;
 }