Hi,
I've noticed some missing smp_mb() in recent code before waitqueue_active and
did a broader audit. Fixed and documented the rest.
The first patch is a stable candidate but does not apply as-is due to changes
in 4.0-rc1.
---
The following changes since commit e57cf21e9787c081db4db6afa02e6e70112ee410:
Btrfs: fix allocation size calculations in alloc_btrfs_bio (2015-02-20 06:55:15 -0800)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git fix/waitqueue-barriers
for you to fetch changes up to 1b127581ed4eb64dc941d2ecaba3174802870c07:
btrfs: comment the rest of implicit barriers before waitqueue_active (2015-02-20 19:06:39 +0100)
----------------------------------------------------------------
David Sterba (4):
btrfs: add missing barriers before waitqueue_active
btrfs: add comments to barriers before waitqueue_active
btrfs: remove extra barrier before waitqueue_active
btrfs: comment the rest of implicit barriers before waitqueue_active
fs/btrfs/compression.c | 3 +++
fs/btrfs/delayed-inode.c | 4 ++++
fs/btrfs/dev-replace.c | 9 ++++++++-
fs/btrfs/disk-io.c | 3 +++
fs/btrfs/extent-tree.c | 3 +--
fs/btrfs/inode.c | 3 +++
fs/btrfs/locking.c | 12 ++++++++++++
fs/btrfs/ordered-data.c | 6 ++++++
fs/btrfs/raid56.c | 17 ++++++++++++-----
fs/btrfs/transaction.c | 8 +++++++-
fs/btrfs/tree-log.c | 16 ++++++++++++++--
fs/btrfs/volumes.c | 3 +++
12 files changed, 76 insertions(+), 11 deletions(-)
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