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Merge branch 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

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Pull btrfs fixes from David Sterba:
 "We've identified and fixed a silent corruption (introduced by code in
  the first pull), a fixup after the blk_status_t merge and two fixes to
  incremental send that Filipe has been hunting for some time"

* 'for-4.13-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Btrfs: fix unexpected return value of bio_readpage_error
  btrfs: btrfs_create_repair_bio never fails, skip error handling
  btrfs: cloned bios must not be iterated by bio_for_each_segment_all
  Btrfs: fix write corruption due to bio cloning on raid5/6
  Btrfs: incremental send, fix invalid memory access
  Btrfs: incremental send, fix invalid path for link commands
This commit is contained in:
Linus Torvalds
2017-07-14 22:55:52 -07:00
parent 0ffff118b1 c3cfb65630
commit bc243704fb
7 changed files with 88 additions and 57 deletions
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26
fs/btrfs/raid56.c
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@@ -1136,20 +1136,27 @@ static void validate_rbio_for_rmw(struct btrfs_raid_bio *rbio)
static void index_rbio_pages(struct btrfs_raid_bio *rbio)
{
struct bio *bio;
struct bio_vec *bvec;
u64 start;
unsigned long stripe_offset;
unsigned long page_index;
int i;
spin_lock_irq(&rbio->bio_list_lock);
bio_list_for_each(bio, &rbio->bio_list) {
struct bio_vec bvec;
struct bvec_iter iter;
int i = 0;
start = (u64)bio->bi_iter.bi_sector << 9;
stripe_offset = start - rbio->bbio->raid_map[0];
page_index = stripe_offset >> PAGE_SHIFT;
bio_for_each_segment_all(bvec, bio, i)
rbio->bio_pages[page_index + i] = bvec->bv_page;
if (bio_flagged(bio, BIO_CLONED))
bio->bi_iter = btrfs_io_bio(bio)->iter;
bio_for_each_segment(bvec, bio, iter) {
rbio->bio_pages[page_index + i] = bvec.bv_page;
i++;
}
}
spin_unlock_irq(&rbio->bio_list_lock);
}
@@ -1423,11 +1430,14 @@ static int fail_bio_stripe(struct btrfs_raid_bio *rbio,
*/
static void set_bio_pages_uptodate(struct bio *bio)
{
struct bio_vec *bvec;
int i;
struct bio_vec bvec;
struct bvec_iter iter;
bio_for_each_segment_all(bvec, bio, i)
SetPageUptodate(bvec->bv_page);
if (bio_flagged(bio, BIO_CLONED))
bio->bi_iter = btrfs_io_bio(bio)->iter;
bio_for_each_segment(bvec, bio, iter)
SetPageUptodate(bvec.bv_page);
}
/*