LU-12275 sec: support truncate for encrypted files

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

diff --git a/lustre/llite/vvp_io.c b/lustre/llite/vvp_io.c
index 55e21fa..85d630f 100644 (file)
--- a/lustre/llite/vvp_io.c
+++ b/lustre/llite/vvp_io.c
@@ -653,7 +653,14 @@ static int vvp_io_setattr_lock(const struct lu_env *env,
        __u32 enqflags = 0;
 
        if (cl_io_is_trunc(io)) {
-               if (io->u.ci_setattr.sa_attr.lvb_size == 0)
+               struct inode *inode = vvp_object_inode(io->ci_obj);
+
+               /* set enqueue flags to CEF_MUST in case of encrypted file,
+                * to prevent lockless truncate
+                */
+               if (S_ISREG(inode->i_mode) && IS_ENCRYPTED(inode))
+                       enqflags = CEF_MUST;
+               else if (io->u.ci_setattr.sa_attr.lvb_size == 0)
                        enqflags = CEF_DISCARD_DATA;
        } else if (cl_io_is_fallocate(io)) {
                lock_start = io->u.ci_setattr.sa_falloc_offset;