diff options
| author | Kent Overstreet <kmo@daterainc.com> | 2013-09-23 23:17:36 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-05 07:13:09 -0700 |
| commit | 30d0e7953b17462b8e42ad374ace70c76e31d410 (patch) | |
| tree | 8722d5dfa60c29f8edbc9cb67c978122503ce298 /scripts/patch-kernel | |
| parent | df8b0d944cae63df86dba0edaa8fa8f5efaa7e03 (diff) | |
bcache: Fix flushes in writeback mode
commit c0f04d88e46d14de51f4baebb6efafb7d59e9f96 upstream.
In writeback mode, when we get a cache flush we need to make sure we
issue a flush to the backing device.
The code for sending down an extra flush was wrong - by cloning the bio
we were probably getting flags that didn't make sense for a bare flush,
and also the old code was firing for FUA bios, for which we don't need
to send a flush to the backing device.
This was causing data corruption somehow - the mechanism was never
determined, but this patch fixes it for the users that were seeing it.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/patch-kernel')
0 files changed, 0 insertions, 0 deletions