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| author | Dennis Zhou (Facebook) <dennisszhou@gmail.com> | 2018-09-11 21:41:32 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-09-22 05:29:11 +0300 |
| commit | bdc2491708c47601603918a9a20acddef6e1d814 (patch) | |
| tree | e10633b8836287b7c29c040665f6518db20f8d4a /fs | |
| parent | 74b7c02a9bc124ee3df0d77880ee26db0a325516 (diff) | |
| download | linux-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')
| -rw-r--r-- | fs/buffer.c | 10 | ||||
| -rw-r--r-- | fs/ext4/page-io.c | 2 |
2 files changed, 6 insertions, 6 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; } diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index db7590178dfc..2aa62d58d8dd 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -374,13 +374,13 @@ static int io_submit_init_bio(struct ext4_io_submit *io, bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); if (!bio) return -ENOMEM; - wbc_init_bio(io->io_wbc, bio); bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9); bio_set_dev(bio, bh->b_bdev); bio->bi_end_io = ext4_end_bio; bio->bi_private = ext4_get_io_end(io->io_end); io->io_bio = bio; io->io_next_block = bh->b_blocknr; + wbc_init_bio(io->io_wbc, bio); return 0; } |