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authorAl Viro <viro@zeniv.linux.org.uk>2012-08-17 21:32:56 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-08-22 10:26:42 -0400
commit31605debdf5459cc8aacabf192a911a803a81c26 (patch)
tree4f7921f9bc1976336afbbbf431450d1d247a6161 /drivers/vfio
parent90b1253e4139776e8257914ae9e2292d0de2fecc (diff)
downloadlinux-31605debdf5459cc8aacabf192a911a803a81c26.tar.gz
vfio: grab vfio_device reference *before* exposing the sucker via fd_install()
It's not critical (anymore) since another thread closing the file will block on ->device_lock before it gets to dropping the final reference, but it's definitely cleaner that way... Acked-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'drivers/vfio')
-rw-r--r--drivers/vfio/vfio.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 887ae43276b..17830c9c7cc 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1111,10 +1111,10 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
*/
filep->f_mode |= (FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE);
- fd_install(ret, filep);
-
vfio_device_get(device);
atomic_inc(&group->container_users);
+
+ fd_install(ret, filep);
break;
}
mutex_unlock(&group->device_lock);