| commit | 805f11a0d515658106bfbfadceff0eb30bd90ad2 | [log] [tgz] |
|---|---|---|
| author | Richard Weinberger <richard@nod.at> | Sun Aug 18 13:30:06 2013 +0200 |
| committer | Richard Weinberger <richard@nod.at> | Sat Sep 07 10:56:49 2013 +0200 |
| tree | 2bcfbc9028d5a92875272302bd9e7daf82b4e4be | |
| parent | f75b1b1bedfb498cc43a992ce4d7ed8df3b1e770 [diff] |
um: ubd: Add REQ_FLUSH suppport UML's block device driver does not support write barriers, to support this this patch adds REQ_FLUSH suppport. Every time the block layer sends a REQ_FLUSH we fsync() now our backing file to guarantee data consistency. Reported-and-tested-by: Richard W.M. Jones <rjones@redhat.com> Signed-off-by: Richard Weinberger <richard@nod.at>