| commit | 3c5df89367761d09d76454a2c4301a73bf2d46ce | [log] [tgz] |
|---|---|---|
| author | Josh Durgin <josh.durgin@inktank.com> | Fri Apr 04 12:06:32 2014 -0700 |
| committer | Ilya Dryomov <idryomov@redhat.com> | Tue Oct 14 21:03:32 2014 +0400 |
| tree | 2e03d9e6e1d75a8558610fcee226f6e1f9fe6fc4 | |
| parent | 90e98c5229c0adfadf2c2ad2c91d72902bf61bc4 [diff] |
rbd: read image size for discard check safely In rbd_img_request_fill() the image size is only checked to determine whether we can truncate an object instead of zeroing it for discard requests. Take rbd_dev->header_rwsem while reading the image size, and move this read into the discard check, so that non-discard ops don't need to take the semaphore in this function. Signed-off-by: Josh Durgin <josh.durgin@inktank.com>