diff options
| author | Ming Lei <tom.leiming@gmail.com> | 2017-03-17 00:12:32 +0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-03-24 10:41:37 -0700 |
| commit | 81fa152008ac903877b59bcc7d16777c3292c206 (patch) | |
| tree | b7631495d46cf363707c14caa4fa43179728decd | |
| parent | 841c1316c7da6199a7df473893c141943991a756 (diff) | |
md: raid10: refactor code of read reshape's .bi_end_io
reshape read request is a bit special and requires one extra
bio which isn't allocated from r10buf_pool.
Refactor the .bi_end_io for read reshape, so that we can use
raid10's resync page mangement approach easily in the following
patches.
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>
| -rw-r--r-- | drivers/md/raid10.c | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 301e73fe2d2f..94f5c368c683 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1889,17 +1889,9 @@ abort: return err; } -static void end_sync_read(struct bio *bio) +static void __end_sync_read(struct r10bio *r10_bio, struct bio *bio, int d) { - struct r10bio *r10_bio = bio->bi_private; struct r10conf *conf = r10_bio->mddev->private; - int d; - - if (bio == r10_bio->master_bio) { - /* this is a reshape read */ - d = r10_bio->read_slot; /* really the read dev */ - } else - d = find_bio_disk(conf, r10_bio, bio, NULL, NULL); if (!bio->bi_error) set_bit(R10BIO_Uptodate, &r10_bio->state); @@ -1923,6 +1915,22 @@ static void end_sync_read(struct bio *bio) } } +static void end_sync_read(struct bio *bio) +{ + struct r10bio *r10_bio = bio->bi_private; + struct r10conf *conf = r10_bio->mddev->private; + int d = find_bio_disk(conf, r10_bio, bio, NULL, NULL); + + __end_sync_read(r10_bio, bio, d); +} + +static void end_reshape_read(struct bio *bio) +{ + struct r10bio *r10_bio = bio->bi_private; + + __end_sync_read(r10_bio, bio, r10_bio->read_slot); +} + static void end_sync_request(struct r10bio *r10_bio) { struct mddev *mddev = r10_bio->mddev; @@ -4438,7 +4446,7 @@ read_more: read_bio->bi_iter.bi_sector = (r10_bio->devs[r10_bio->read_slot].addr + rdev->data_offset); read_bio->bi_private = r10_bio; - read_bio->bi_end_io = end_sync_read; + read_bio->bi_end_io = end_reshape_read; bio_set_op_attrs(read_bio, REQ_OP_READ, 0); read_bio->bi_flags &= (~0UL << BIO_RESET_BITS); read_bio->bi_error = 0; |