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Subject[GIT PULL] Btrfs for 4.16

the btrfs updates for this cycle are mostly cleanups with a few raid56 bugfixes
and some feature additions. Please pull, thanks.

Features or user visible changes:

- fallocate: implement zero range mode

- avoid losing data raid profile when deleting a device

- tree item checker: more checks for directory items and xattrs

Notable fixes:

- raid56 recovery: don't use cached stripes, that could be potentially changed
and a later RMW or recovery would lead to corruptions or failures

- let raid56 try harder to rebuild damaged data, reading from all stripes if

- fix scrub to repair raid56 in a similar way as in the case above


- cleanups: device freeing, removed some call indirections, redundant
bio_put/_get, unused parameters, refactorings and renames

- RCU list traversal fixups

- simplify mount callchain, remove recursing back when mounting a subvolume

- plug for fsync, may improve bio merging on multiple devices

- compression heurisic: replace heap sort with radix sort, gains some

- add extent map selftests, buffered write vs dio


The following changes since commit 0c5b9b5d9adbad4b60491f9ba0d2af38904bb4b9:

Linux 4.15-rc9 (2018-01-21 13:51:26 -0800)

are available in the Git repository at:

git:// for-4.16-tag

for you to fetch changes up to 3acbcbfc8f06d4ade2aab2ebba0a2542a05ce90c:

btrfs: drop devid as device_list_add() arg (2018-01-29 19:31:16 +0100)

Anand Jain (33):
btrfs: clean up btrfs_dev_stat_inc usage
btrfs: move volume_mutex into the btrfs_rm_device()
btrfs: rename btrfs_add_device to btrfs_add_dev_item
btrfs: set fs_devices->seed directly
btrfs: move check for device generation to the last
btrfs: factor __btrfs_open_devices() to create btrfs_open_one_device()
btrfs: drop btrfs_device::can_discard to query directly
btrfs: add helper for device path or missing
btrfs: cleanup device states define BTRFS_DEV_STATE_WRITEABLE
btrfs: cleanup device states define BTRFS_DEV_STATE_IN_FS_METADATA
btrfs: cleanup device states define BTRFS_DEV_STATE_MISSING
btrfs: cleanup device states define BTRFS_DEV_STATE_REPLACE_TGT
btrfs: cleanup device states define BTRFS_DEV_STATE_FLUSH_SENT
btrfs: put btrfs_ioctl_vol_args_v2 related defines together
btrfs: factor btrfs_check_rw_degradable() to check given device
btrfs: remove check for BTRFS_FS_STATE_ERROR which we just set
btrfS: collapse btrfs_handle_error() into __btrfs_handle_fs_error()
btrfs: rename btrfs_device::scrub_device to scrub_ctx
btrfs: simplify mutex unlocking code in btrfs_commit_transaction
btrfs: minor style cleanups in btrfs_scan_one_device
btrfs: define SUPER_FLAG_METADUMP_V2
btrfs: add support for SUPER_FLAG_CHANGING_FSID
btrfs: fail mount when sb flag is not in BTRFS_SUPER_FLAG_SUPP
btrfs: cleanup btrfs_free_stale_device() usage
btrfs: no need to check for btrfs_fs_devices::seeding
btrfs: make btrfs_free_stale_device() to iterate all stales
btrfs: make btrfs_free_stale_devices() argument optional
btrfs: rename btrfs_free_stale_devices() arg to skip_dev
btrfs: make btrfs_free_stale_devices() to match the path
btrfs: move pr_info into device_list_add
btrfs: set the total_devices in device_list_add()
btrfs: get device pointer from device_list_add()
btrfs: drop devid as device_list_add() arg

Arnd Bergmann (1):
btrfs: tree-checker: use %zu format string for size_t

Colin Ian King (1):
btrfs: make function update_share_count static

David Sterba (46):
btrfs: rename device free rcu helper to free_device_rcu
btrfs: introduce free_device helper
btrfs: use free_device where opencoded
btrfs: simplify exit paths in btrfs_init_new_device
btrfs: document device locking
btrfs: simplify btrfs_close_bdev
btrfs: switch to RCU for device traversal in btrfs_ioctl_dev_info
btrfs: switch to RCU for device traversal in btrfs_ioctl_fs_info
btrfs: use non-RCU list traversal in write_all_supers callees
btrfs: prepare to drop gfp mask parameter from clear_extent_bit
btrfs: sink gfp parameter to clear_extent_bit
btrfs: sink gfp parameter to clear_extent_uptodate
btrfs: use GFP_KERNEL in btrfs_alloc_inode
btrfs: sink get_extent parameter to extent_writepages
btrfs: sink get_extent parameter to extent_write_locked_range
btrfs: sink get_extent parameter to extent_write_full_page
btrfs: drop get_extent from extent_page_data
btrfs: sink get_extent parameter to extent_fiemap
btrfs: sink get_extent parameter to get_extent_skip_holes
btrfs: sink get_extent parameter to extent_readpages
btrfs: sink get_extent parameter to __extent_readpages
btrfs: sink get_extent parameter to __do_contiguous_readpages
btrfs: sink get_extent parameter to read_extent_buffer_pages
btrfs: switch to on-stack csum buffer in csum_tree_block
btrfs: switch btrfs_trans_handle::adding_csums to bool
btrfs: remove unused member of btrfs_trans_handle
btrfs: switch to refcount_t type for btrfs_trans_handle::use_count
btrfs: reorder btrfs_trans_handle members for better packing
btrfs: use narrower type for btrfs_transaction::num_dirty_bgs
btrfs: reorder btrfs_transaction members for better packing
btrfs: move some zstd work data from stack to workspace
btrfs: compression: add helper for type to string conversion
btrfs: SETFLAGS ioctl: use helper for compression type conversion
btrfs: prop: use common helper for type to string conversion
btrfs: show options: use helper to convert compression type string
btrfs: merge two flush_write_bio helpers
btrfs: sink flush_fn to extent_write_cache_pages
btrfs: sink writepage parameter to extent_write_cache_pages
btrfs: unify extent_page_data type passed as void
btrfs: heuristic: open code get_num callback of radix sort
btrfs: heuristic: open code copy_call callback of radix sort
btrfs: heuristic: call get4bits directly
btrfs: drop unused parameters from mount_subvol
btrfs: add separate helper for unlock_extent_cached with GFP_ATOMIC
btrfs: sink unlock_extent parameter gfp_flags
btrfs: tree-check: reduce stack consumption in check_dir_item

Edmund Nadolski (2):
btrfs: btrfs_inode_log_parent should use defined inode_only values.
btrfs: remove dead code from btrfs_get_extent

Filipe Manana (4):
Btrfs: add support for fallocate's zero range operation
Btrfs: use cached state when dirtying pages during buffered write
Btrfs: fix missing inode i_size update after zero range operation
Btrfs: fix space leak after fallocate and zero range operations

Geert Uytterhoeven (1):
btrfs: ref-verify: Remove unused parameter from walk_up_tree() to kill warning

Liu Bo (26):
Btrfs: remove redundant btrfs_balance_delayed_items
Btrfs: free btrfs_device in place
Btrfs: remove rcu_barrier in btrfs_close_devices
Btrfs: add __init macro to btrfs init functions
Btrfs: document rules about bio async submit
Btrfs: set plug for fsync
Btrfs: remove unused variable wait in lock_stripe_add
Btrfs: use struct completion in scrub_submit_raid56_bio_wait
Btrfs: remove unused wait in btrfs_stripe_hash
Btrfs: fix scrub to repair raid6 corruption
Btrfs: make raid6 rebuild retry more
Btrfs: remove redundant check in rbio_can_merge
Btrfs: do not merge rbios if their fail stripe index are not identical
Btrfs: avoid losing data raid profile when deleting a device
Btrfs: raid56: iterate raid56 internal bio with bio_for_each_segment_all
Btrfs: do not cache rbio pages if using raid6 recover
Btrfs: raid56: fix race between merge_bio and rbio_orig_end_io
Btrfs: fix incorrect block_len in merge_extent_mapping
Btrfs: fix unexpected EEXIST from btrfs_get_extent
Btrfs: add helper for em merge logic
Btrfs: move extent map specific code to extent_map.c
Btrfs: add extent map selftests
Btrfs: extent map selftest: buffered write vs dio read
Btrfs: extent map selftest: dio write vs dio read
Btrfs: add WARN_ONCE to detect unexpected error from merge_extent_mapping
Btrfs: noinline merge_extent_mapping

Matthew Wilcox (1):
btrfs: Remove unused readahead spinlock

Misono, Tomohiro (6):
btrfs: add btrfs_mount_root() and new file_system_type
btrfs: cleanup btrfs_mount() using btrfs_mount_root()
btrfs: split parse_early_options() in two
btrfs: remove unused setup_root_args()
btrfs: remove unused arg from parse_subvol_options()
btrfs: cleanup unnecessary string dup in btrfs_parse_options()

Nikolay Borisov (25):
btrfs: Fix memory barriers usage with device stats counters
btrfs: Remove redundant memory barrier in dev stats
btrfs: Remove unused function
btrfs: Remove redundant mirror_num arg
btrfs: Make btrfs_async_run_delayed_root use a loop rather than multiple labels
btrfs: Move checks from btrfs_wq_run_delayed_node to btrfs_balance_delayed_items
btrfs: Move loop termination condition in while()
btrfs: Use locked_end rather than open coding it
btrfs: Reduce scope of delayed_rsv->lock in may_commit_trans
btrfs: Remove redundant FLAG_VACANCY
btrfs: Remove unused variable in btrfs_get_extent
btrfs: remove redundant check in btrfs_get_extent_fiemap
btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker
btrfs: Fix out of bounds access in btrfs_search_slot
btrfs: Remove pair of bio_get/put in btrfs_schedule_bio
btrfs: sink extent_write_locked_range tree parameter
btrfs: sink extent_write_full_page tree argument
btrfs: Rename bin_search -> btrfs_bin_search
btrfs: Improve btrfs_search_slot description
btrfs: Remove redundant bio_get/set calls in compressed read/write paths
btrfs: Remove redundant bio_get/set from submit_dio_repair_bio
btrfs: Remove redundant bio_get/bio_set pair from submit_one_bio
btrfs: Remove redundant pair of bio_get/set in __btrfs_submit_dio_bio
btrfs: Make btrfs_inode_rsv_release static
btrfs: Use IS_ALIGNED in btrfs_truncate_block instead of opencoding it

Pravin Shedge (1):
btrfs: remove duplicate includes

Qu Wenruo (4):
btrfs: Don't generate UUID for non-fs tree
btrfs: tree-checker: Add checker for dir item
btrfs: Cleanup existing name_len checks
btrfs: extent-tree: Make btrfs_inode_rsv_refill function static

Su Yue (1):
btrfs: correct wrong comment about magic number of index_cnt

Timofey Titovets (2):
Btrfs: compression heuristic: replace heap sort with radix sort
Btrfs: compress_file_range() change page dirty status once

Xiongfeng Wang (1):
btrfs: use correct string length in DEV_INFO ioctl

fs/btrfs/Makefile | 2 +-
fs/btrfs/backref.c | 3 +-
fs/btrfs/compression.c | 137 ++++++--
fs/btrfs/compression.h | 4 +-
fs/btrfs/ctree.c | 56 ++--
fs/btrfs/ctree.h | 12 +-
fs/btrfs/delayed-inode.c | 59 ++--
fs/btrfs/delayed-ref.c | 2 +-
fs/btrfs/delayed-ref.h | 2 +-
fs/btrfs/dev-replace.c | 30 +-
fs/btrfs/dir-item.c | 108 ------
fs/btrfs/disk-io.c | 75 ++---
fs/btrfs/disk-io.h | 3 +
fs/btrfs/export.c | 5 -
fs/btrfs/extent-tree.c | 21 +-
fs/btrfs/extent_io.c | 143 ++++----
fs/btrfs/extent_io.h | 48 +--
fs/btrfs/extent_map.c | 132 ++++++++
fs/btrfs/extent_map.h | 3 +-
fs/btrfs/file.c | 391 ++++++++++++++++-----
fs/btrfs/free-space-cache.c | 13 +-
fs/btrfs/inode.c | 278 ++++-----------
fs/btrfs/ioctl.c | 44 +--
fs/btrfs/props.c | 13 +-
fs/btrfs/qgroup.c | 3 +-
fs/btrfs/raid56.c | 119 ++++---
fs/btrfs/ref-verify.c | 6 +-
fs/btrfs/root-tree.c | 7 -
fs/btrfs/scrub.c | 95 +++---
fs/btrfs/send.c | 6 -
fs/btrfs/super.c | 348 ++++++++++---------
fs/btrfs/sysfs.c | 2 +-
fs/btrfs/tests/btrfs-tests.c | 3 +
fs/btrfs/tests/btrfs-tests.h | 1 +
fs/btrfs/tests/extent-map-tests.c | 366 ++++++++++++++++++++
fs/btrfs/tests/inode-tests.c | 17 +-
fs/btrfs/transaction.c | 22 +-
fs/btrfs/transaction.h | 11 +-
fs/btrfs/tree-checker.c | 142 ++++++++
fs/btrfs/tree-log.c | 54 +--
fs/btrfs/volumes.c | 689 ++++++++++++++++++++++----------------
fs/btrfs/volumes.h | 45 ++-
fs/btrfs/xattr.c | 6 -
fs/btrfs/zstd.c | 132 ++++----
include/trace/events/btrfs.h | 1 -
include/uapi/linux/btrfs.h | 11 +-
include/uapi/linux/btrfs_tree.h | 2 +
47 files changed, 2267 insertions(+), 1405 deletions(-)
create mode 100644 fs/btrfs/tests/extent-map-tests.c

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