Hi everyone, The master branch of the btrfs unstable tree: git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable.git master Has an assortment of bug fixes. It includes some corruption fixes when mounting the filesystem in degraded mode, and related oopsen as we try to mount damaged filesystems. The async snapshot ioctl added in rc1 is fixed to properly do synchronous snapshots unless the new async ioctl is used. It is also updated to be ready for the readonly snapshot feature we''ll add in 2.6.38. Xin Zhong from Intel pitched in a deadlock during copy_from_user and Josef has fixes for the new fast caching code and a few other bugs. Josef Bacik (5) commits (+38/-21): Btrfs: do not BUG if we fail to remove the orphan item for dead snapshots (+7/-3) Btrfs: do not do fast caching if we are allocating blocks for tree_root (+12/-6) Btrfs: fixup return code for btrfs_del_orphan_item (+5/-1) Btrfs: deal with space cache errors better (+13/-9) Btrfs: fix use after free in O_DIRECT (+1/-2) Chris Mason (3) commits (+59/-5): Btrfs: account for missing devices in RAID allocation profiles (+36/-3) Btrfs: prevent RAID level downgrades when space is low (+19/-1) Btrfs: EIO when we fail to read tree roots (+4/-1) Li Zefan (2) commits (+37/-23): Btrfs: Make async snapshot ioctl more generic (+36/-22) Btrfs: Fix a crash when mounting a subvolume (+1/-1) Zheng Yan (1) commits (+1/-1): Btrfs: Fix page leak in compressed writeback path Xin Zhong (1) commits (+60/-32): Btrfs: pwrite blocked when writing from the mmaped buffer of the same page Sage Weil (1) commits (+11/-9): Btrfs: fix sync subvol/snapshot creation Jan Beulich (1) commits (+5/-7): Btrfs: fix compiler warnings Total: (14) commits (+211/-98) fs/btrfs/disk-io.c | 11 +++-- fs/btrfs/extent-tree.c | 75 +++++++++++++++++++++++++++------- fs/btrfs/file.c | 92 ++++++++++++++++++++++++++++--------------- fs/btrfs/free-space-cache.c | 12 +++-- fs/btrfs/inode.c | 11 ++--- fs/btrfs/ioctl.c | 56 ++++++++++++++++---------- fs/btrfs/ioctl.h | 14 ++++-- fs/btrfs/orphan.c | 6 ++- fs/btrfs/super.c | 2 +- fs/btrfs/volumes.c | 20 +++++++++- fs/btrfs/volumes.h | 2 + 11 files changed, 207 insertions(+), 94 deletions(-)