tree 8adef3f0d868cdb67dd8d4aba11edf210341ebdf
parent b57d74aff9ab92fbfb7c197c384d1adfa2827b2e
author Jens Axboe <axboe@fb.com> 1478659168 -0700
committer Jens Axboe <axboe@fb.com> 1478659168 -0700

block: set REQ_SYNC if we clear REQ_FUA|REQ_PREFLUSH

If we insert a flush request, we clear REQ_PREFLUSH and/or REQ_FUA,
depending on flush settings. Since op_is_sync() factors those flags
in for deciding whether this request is sync or not, we should
set REQ_SYNC to avoid screwing up this accounting.

This should be less fragile.

Reported-by: Logan Gunthorpe <logang@deltatee.com>
Fixes: b685d3d65ac ("block: treat REQ_FUA and REQ_PREFLUSH as synchronous")
Signed-off-by: Jens Axboe <axboe@fb.com>