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authorDennis Zhou (Facebook) <dennisszhou@gmail.com>2018-09-11 21:41:32 +0300
committerJens Axboe <axboe@kernel.dk>2018-09-22 05:29:11 +0300
commitbdc2491708c47601603918a9a20acddef6e1d814 (patch)
treee10633b8836287b7c29c040665f6518db20f8d4a /fs/buffer.c
parent74b7c02a9bc124ee3df0d77880ee26db0a325516 (diff)
downloadlinux-bdc2491708c47601603918a9a20acddef6e1d814.tar.xz
blkcg: associate writeback bios with a blkg
One of the goals of this series is to remove a separate reference to the css of the bio. This can and should be accessed via bio_blkcg. In this patch, the wbc_init_bio call is changed such that it must be called after a queue has been associated with the bio. Signed-off-by: Dennis Zhou <dennisszhou@gmail.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/buffer.c')
-rw-r--r--fs/buffer.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/fs/buffer.c b/fs/buffer.c
index 6f1ae3ac9789..109f55196866 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3060,11 +3060,6 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
*/
bio = bio_alloc(GFP_NOIO, 1);
- if (wbc) {
- wbc_init_bio(wbc, bio);
- wbc_account_io(wbc, bh->b_page, bh->b_size);
- }
-
bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
bio_set_dev(bio, bh->b_bdev);
bio->bi_write_hint = write_hint;
@@ -3084,6 +3079,11 @@ static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
op_flags |= REQ_PRIO;
bio_set_op_attrs(bio, op, op_flags);
+ if (wbc) {
+ wbc_init_bio(wbc, bio);
+ wbc_account_io(wbc, bh->b_page, bh->b_size);
+ }
+
submit_bio(bio);
return 0;
}