LU-1876 hsm: layout lock implementation on server side

[fs/lustre-release.git] / lustre / llite / vvp_io.c

diff --git a/lustre/llite/vvp_io.c b/lustre/llite/vvp_io.c
index 3fd1fb8..401c4ad 100644 (file)
--- a/lustre/llite/vvp_io.c
+++ b/lustre/llite/vvp_io.c
@@ -1180,6 +1180,12 @@ int vvp_io_init(const struct lu_env *env, struct cl_object *obj,
                        io->ci_lockreq = CILR_MANDATORY;
        }
 
+       /* ignore layout change for generic CIT_MISC but not for glimpse.
+        * io context for glimpse must set ci_verify_layout to true,
+        * see cl_glimpse_size0() for details. */
+       if (io->ci_type == CIT_MISC && !io->ci_verify_layout)
+               io->ci_ignore_layout = 1;
+
        /* Enqueue layout lock and get layout version. We need to do this
         * even for operations requiring to open file, such as read and write,
         * because it might not grant layout lock in IT_OPEN. */