[PATCH 4.9 21/86] loop: Fix lost writes caused by missing flag

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Ross Zwisler commit 1d037577c323e5090ce281e96bc313ab2eee5be2 upstream. The following commit: commit aa4d86163e4e ("block: loop: switch to VFS ITER_BVEC")

[PATCH 4.9 21/86] loop: Fix lost writes caused by missing flag

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Ross Zwisler commit 1d037577c323e5090ce281e96bc313ab2eee5be2 upstream. The following commit: commit aa4d86163e4e ("block: loop: switch to VFS ITER_BVEC") replaced __do_lo_send_write(), which