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-rw-r--r--fs/nfs/write.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 38ba5c09af08..c12effb46fe5 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1253,7 +1253,13 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
dprintk("NFS: %4d nfs_writeback_done (status %d)\n",
task->tk_pid, task->tk_status);
- /* Call the NFS version-specific code */
+ /*
+ * ->write_done will attempt to use post-op attributes to detect
+ * conflicting writes by other clients. A strict interpretation
+ * of close-to-open would allow us to continue caching even if
+ * another writer had changed the file, but some applications
+ * depend on tighter cache coherency when writing.
+ */
status = NFS_PROTO(data->inode)->write_done(task, data);
if (status != 0)
return status;