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Revert "block: add missing block_bio_complete() tracepoint"

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This reverts commit 3a366e614d.

Wanlong Gao reports that it causes a kernel panic on his machine several
minutes after boot. Reverting it removes the panic.

Jens says:
 "It's not quite clear why that is yet, so I think we should just revert
  the commit for 3.9 final (which I'm assuming is pretty close).

  The wifi is crap at the LSF hotel, so sending this email instead of
  queueing up a revert and pull request."

Reported-by: Wanlong Gao <[email protected]>
Requested-by: Jens Axboe <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Steven Rostedt <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Linus Torvalds 2013-04-18 09:00:26 -07:00
commit 0a82a8d132
7 changed files with 19 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/md/dm.c
View file

@ -611,6 +611,7 @@ static void dec_pending(struct dm_io *io, int error)
queue_io(md, bio);
} else {
/* done with normal IO or empty flush */
trace_block_bio_complete(md->queue, bio, io_error);
bio_endio(bio, io_error);
}
}

11
drivers/md/raid5.c
View file

@ -184,6 +184,8 @@ static void return_io(struct bio *return_bi)
return_bi = bi->bi_next;
bi->bi_next = NULL;
bi->bi_size = 0;
trace_block_bio_complete(bdev_get_queue(bi->bi_bdev),
bi, 0);
bio_endio(bi, 0);
bi = return_bi;
}
@ -3914,6 +3916,8 @@ static void raid5_align_endio(struct bio *bi, int error)
rdev_dec_pending(rdev, conf->mddev);
if (!error && uptodate) {
trace_block_bio_complete(bdev_get_queue(raid_bi->bi_bdev),
raid_bi, 0);
bio_endio(raid_bi, 0);
if (atomic_dec_and_test(&conf->active_aligned_reads))
wake_up(&conf->wait_for_stripe);
@ -4382,6 +4386,8 @@ static void make_request(struct mddev *mddev, struct bio * bi)
if ( rw == WRITE )
md_write_end(mddev);
trace_block_bio_complete(bdev_get_queue(bi->bi_bdev),
bi, 0);
bio_endio(bi, 0);
}
}
@ -4758,8 +4764,11 @@ static int retry_aligned_read(struct r5conf *conf, struct bio *raid_bio)
handled++;
}
remaining = raid5_dec_bi_active_stripes(raid_bio);
if (remaining == 0)
if (remaining == 0) {
trace_block_bio_complete(bdev_get_queue(raid_bio->bi_bdev),
raid_bio, 0);
bio_endio(raid_bio, 0);
}
if (atomic_dec_and_test(&conf->active_aligned_reads))
wake_up(&conf->wait_for_stripe);
return handled;