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authorChristoph Hellwig <hch@lst.de>2017-10-25 17:55:57 +0900
committerIngo Molnar <mingo@kernel.org>2017-10-25 12:18:59 +0200
commit65e53aab6d54385dea799356defcbdcc456fb1a7 (patch)
tree175f5b0b44bfc6e71b510af1b0da4c788c19e18d
parent6aa7de059173a986114ac43b8f50b297a86f09a8 (diff)
downloadlinux-65e53aab6d54385dea799356defcbdcc456fb1a7.tar.bz2
block: Use DECLARE_COMPLETION_ONSTACK() in submit_bio_wait()
Simplify the code by getting rid of the submit_bio_ret structure. (This also helps address a lockdep false positive.) Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: amir73il@gmail.com Cc: axboe@kernel.dk Cc: darrick.wong@oracle.com Cc: david@fromorbit.com Cc: hch@infradead.org Cc: idryomov@gmail.com Cc: johan@kernel.org Cc: johannes.berg@intel.com Cc: kernel-team@lge.com Cc: linux-block@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: linux-mm@kvack.org Cc: linux-xfs@vger.kernel.org Cc: oleg@redhat.com Cc: tj@kernel.org Link: http://lkml.kernel.org/r/1508921765-15396-2-git-send-email-byungchul.park@lge.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--block/bio.c19
1 files changed, 5 insertions, 14 deletions
diff --git a/block/bio.c b/block/bio.c
index 101c2a9b5481..5e901bfc0576 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -917,17 +917,9 @@ int bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
}
EXPORT_SYMBOL_GPL(bio_iov_iter_get_pages);
-struct submit_bio_ret {
- struct completion event;
- int error;
-};
-
static void submit_bio_wait_endio(struct bio *bio)
{
- struct submit_bio_ret *ret = bio->bi_private;
-
- ret->error = blk_status_to_errno(bio->bi_status);
- complete(&ret->event);
+ complete(bio->bi_private);
}
/**
@@ -943,16 +935,15 @@ static void submit_bio_wait_endio(struct bio *bio)
*/
int submit_bio_wait(struct bio *bio)
{
- struct submit_bio_ret ret;
+ DECLARE_COMPLETION_ONSTACK(done);
- init_completion(&ret.event);
- bio->bi_private = &ret;
+ bio->bi_private = &done;
bio->bi_end_io = submit_bio_wait_endio;
bio->bi_opf |= REQ_SYNC;
submit_bio(bio);
- wait_for_completion_io(&ret.event);
+ wait_for_completion_io(&done);
- return ret.error;
+ return blk_status_to_errno(bio->bi_status);
}
EXPORT_SYMBOL(submit_bio_wait);