[PATCH v3 0/4] btrfs: Fix data checksum error cause by replace with io-load

[Zhaolei <zhaolei@cn.fujitsu.com>]

From: Zhao Lei <zhaolei@cn.fujitsu.com>

This patchset is used to fix data checksum error cause by replace with io-load.
It cause xfstests btrfs/070 and btrfs/071 sometimes failed.

See description in [PATCH 4/4] for detail.

Changelog v2->v3:
1: Fix a typo(caused in rebase) which make xfstests failed in
   btrfs/073 and btrfs/066.
2: Rebase on top of integration-4.2
3: Do full xfstests(generic and btrfs group with 10 mount options)

Changelog v1->v2:
1: Update subject to reflect the problem being fixed.
2: Update description to say reason why set read-only can fix the
   problem.
3: Use a helper function to avoid duplicated code block for set
   chunk ro.
All of above are suggested by: David Sterba <dsterba@suse.cz>



Zhao Lei (4):
  btrfs: Use ref_cnt for set_block_group_ro()
  btrfs: Separate scrub_blocked_if_needed() to scrub_pause_on/off()
  btrfs: use scrub_pause_on/off() to reduce code in
    scrub_enumerate_chunks()
  btrfs: Fix data checksum error cause by replace with io-load.

 fs/btrfs/ctree.h       |  6 +++---
 fs/btrfs/extent-tree.c | 42 +++++++++++++++++++++---------------------
 fs/btrfs/relocation.c  | 14 ++++++--------
 fs/btrfs/scrub.c       | 35 +++++++++++++++++++++++++++--------
 4 files changed, 57 insertions(+), 40 deletions(-)

-- 
1.8.5.1