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| author |   Jun'ichi Nomura <j-nomura@ce.jp.nec.com> | 2012-10-22 10:15:37 +0900 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2012-10-22 22:00:26 +0200 |
| commit | 65c77fd9e8a1c8c3da0bbbea6b7efa3d6ef265f8 (patch) | |
| tree | 305b08304869b3f8d57a191b4b23968e53b53247 /fs/bio.c | |
| parent | blkcg: Fix use-after-free of q->root_blkg and q->root_rl.blkg (diff) | |
| download | linux-dev-65c77fd9e8a1c8c3da0bbbea6b7efa3d6ef265f8.tar.xz linux-dev-65c77fd9e8a1c8c3da0bbbea6b7efa3d6ef265f8.zip | |
blkcg: stop iteration early if root_rl is the only request list
__blk_queue_next_rl() finds next request list based on blkg_list
while skipping root_blkg in the list.
OTOH, root_rl is special as it may exist even without root_blkg.
Though the later part of the function handles such a case correctly,
exiting early is good for readability of the code.
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/bio.c')
0 files changed, 0 insertions, 0 deletions