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-rw-r--r--fs/nfs/read.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index dae33c1e8a7..69f1549da2b 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -568,8 +568,13 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
nfs_add_stats(data->inode, NFSIOS_SERVERREADBYTES, resp->count);
- /* Is this a short read? */
- if (task->tk_status >= 0 && resp->count < argp->count && !resp->eof) {
+ if (task->tk_status < 0) {
+ if (task->tk_status == -ESTALE) {
+ set_bit(NFS_INO_STALE, &NFS_FLAGS(data->inode));
+ nfs_mark_for_revalidate(data->inode);
+ }
+ } else if (resp->count < argp->count && !resp->eof) {
+ /* This is a short read! */
nfs_inc_stats(data->inode, NFSIOS_SHORTREAD);
/* Has the server at least made some progress? */
if (resp->count != 0) {
@@ -616,6 +621,10 @@ int nfs_readpage(struct file *file, struct page *page)
if (error)
goto out_error;
+ error = -ESTALE;
+ if (NFS_STALE(inode))
+ goto out_error;
+
if (file == NULL) {
ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
if (ctx == NULL)
@@ -678,7 +687,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
};
struct inode *inode = mapping->host;
struct nfs_server *server = NFS_SERVER(inode);
- int ret;
+ int ret = -ESTALE;
dprintk("NFS: nfs_readpages (%s/%Ld %d)\n",
inode->i_sb->s_id,
@@ -686,6 +695,9 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
nr_pages);
nfs_inc_stats(inode, NFSIOS_VFSREADPAGES);
+ if (NFS_STALE(inode))
+ goto out;
+
if (filp == NULL) {
desc.ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
if (desc.ctx == NULL)
@@ -701,6 +713,7 @@ int nfs_readpages(struct file *filp, struct address_space *mapping,
ret = err;
}
put_nfs_open_context(desc.ctx);
+out:
return ret;
}