LU-8025 llite: make vvp_io_write_start lockless for newer kernels

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

diff --git a/lustre/llite/vvp_io.c b/lustre/llite/vvp_io.c
index 625cb82..2f10ea7 100644 (file)
--- a/lustre/llite/vvp_io.c
+++ b/lustre/llite/vvp_io.c
@@ -1025,7 +1025,15 @@ static int vvp_io_write_start(const struct lu_env *env,
                 * consistency, proper locking to protect against writes,
                 * trucates, etc. is handled in the higher layers of lustre.
                 */
-               result = generic_file_write_iter(vio->vui_iocb, vio->vui_iter);
+               bool lock_node = !IS_NOSEC(inode);
+
+               if (lock_node)
+                       inode_lock(inode);
+               result = __generic_file_write_iter(vio->vui_iocb,
+                                                  vio->vui_iter);
+               if (lock_node)
+                       inode_unlock(inode);
+
                if (result > 0 || result == -EIOCBQUEUED) {
                        ssize_t err;