Patch "Btrfs: raid56: iterate raid56 internal bio with bio_for_each_segment_all" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

Btrfs: raid56: iterate raid56 internal bio with bio_for_each_segment_all

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
btrfs-raid56-iterate-raid56-internal-bio-with-bio_for_each_segment_all.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Liu Bo <[email protected]>
Date: Fri, 12 Jan 2018 18:07:01 -0700
Subject: Btrfs: raid56: iterate raid56 internal bio with bio_for_each_segment_all

From: Liu Bo <[email protected]>

commit 0198e5b707cfeb5defbd1b71b1ec6e71580d7db9 upstream.

Bio iterated by set_bio_pages_uptodate() is raid56 internal one, so it will never be a BIO_CLONED bio, and since this is called by end_io functions, bio->bi_iter.bi_size is zero, we mustn't use bio_for_each_segment() as that is a no-op if bi_size is zero.

---
 fs/btrfs/raid56.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

@@ -1432,14 +1432,13 @@ static int fail_bio_stripe(struct btrfs_
  */
 static void set_bio_pages_uptodate(struct bio *bio)
 {
-	struct bio_vec bvec;
-	struct bvec_iter iter;
+	struct bio_vec *bvec;
+	int i;
 
-	if (bio_flagged(bio, BIO_CLONED))
-		bio->bi_iter = btrfs_io_bio(bio)->iter;
+	ASSERT(!bio_flagged(bio, BIO_CLONED));
 
-	bio_for_each_segment(bvec, bio, iter)
-		SetPageUptodate(bvec.bv_page);
+	bio_for_each_segment_all(bvec, bio, i)
+		SetPageUptodate(bvec->bv_page);
 }
 
 /*

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/btrfs-raid56-iterate-raid56-internal-bio-with-bio_for_each_segment_all.patch