diff options
| author | David Chinner <dgc@sgi.com> | 2007-06-05 02:24:36 -0400 |
|---|---|---|
| committer | Tim Shimmin <tes@chook.melbourne.sgi.com> | 2007-07-14 01:30:52 -0400 |
| commit | e927af90aaa7d75543edbbd9c2810e6963d0443f (patch) | |
| tree | 56da842111210cd39bd45365a42f52f3c50eaf14 /fs/drop_caches.c | |
| parent | f4a9f28a909debe97cd3f6ca30e82e5811125bff (diff) | |
[XFS] Block on unwritten extent conversion during synchronous direct I/O.
Currently we do not wait on extent conversion to occur, and hence we can
return to userspace from a synchronous direct I/O write without having
completed all the actions in the write. Hence a read after the write may
see zeroes (unwritten extent) rather than the data that was written.
Block the I/O completion by triggering a synchronous workqueue flush to
ensure that the conversion has occurred before we return to userspace.
SGI-PV: 964092
SGI-Modid: xfs-linux-melb:xfs-kern:28775a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/drop_caches.c')
0 files changed, 0 insertions, 0 deletions