[GIT PULL] Btrfs updates for 5.13

From: David Sterba
Date: Mon Apr 26 2021 - 16:01:41 EST

From: David Sterba <dsterba@xxxxxxx>


the updates this time are mostly stabilization, preparation and minor

Please pull, thanks.

User visible improvements:

- readahead for send, improving run time of full send by 10% and for
incremental by 25%

- make reflinks respect O_SYNC, O_DSYNC and S_SYNC flags

- export supported sectorsize values in sysfs (currently only page size,
more once full subpage support lands)

- more graceful errors and warnings on 32bit systems when logical
addresses for metadata reach the limit posed by unsigned long in
- error: fail mount if there's a metadata block beyond the limit
- error: new metadata block would be at unreachable address
- warn when 5/8th of the limit is reached, for 4K page systems it's
10T, for 64K page it's 160T

- zoned mode
- relocated zones get reset at the end instead of discard
- automatic background reclaim of zones that have 75%+ of unusable
space, the threshold is tunable in sysfs


- fsync and tree mod log fixes

- fix inefficient preemptive reclaim calculations

- fix exhaustion of the system chunk array due to concurrent allocations

- fix fallback to no compression when racing with remount

- preemptive fix for dm-crypt on zoned device that does not properly
advertise zoned support

Core changes:

- add inode lock to synchronize mmap and other block updates (eg.
deduplication, fallocate, fsync)

- kmap conversions to new kmap_local API

- subpage support (continued)
- new helpers for page state/extent buffer tracking
- metadata changes now support read and write

- error handling through out relocation call paths

- many other cleanups and code simplifications

The following changes since commit bf05bf16c76bb44ab5156223e1e58e26dfe30a88:

Linux 5.12-rc8 (2021-04-18 14:45:32 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-5.13-tag

for you to fetch changes up to 18bb8bbf13c1839b43c9e09e76d397b753989af2:

btrfs: zoned: automatically reclaim zones (2021-04-20 20:46:31 +0200)

Anand Jain (3):
btrfs: unexport btrfs_extent_readonly() and make it static
btrfs: change return type to bool in btrfs_extent_readonly
btrfs: scrub: drop a few function declarations

Arnd Bergmann (1):
btrfs: zoned: bail out in btrfs_alloc_chunk for bad input

BingJing Chang (1):
btrfs: fix a potential hole punching failure

Filipe Manana (21):
btrfs: add btree read ahead for full send operations
btrfs: add btree read ahead for incremental send operations
btrfs: fix race between memory mapped writes and fsync
btrfs: fix race between marking inode needs to be logged and log syncing
btrfs: remove stale comment and logic from btrfs_inode_in_log()
btrfs: move the tree mod log code into its own file
btrfs: use booleans where appropriate for the tree mod log functions
btrfs: use a bit to track the existence of tree mod log users
btrfs: use the new bit BTRFS_FS_TREE_MOD_LOG_USERS at btrfs_free_tree_block()
btrfs: remove unnecessary leaf check at btrfs_tree_mod_log_free_eb()
btrfs: add and use helper to get lowest sequence number for the tree mod log
btrfs: update debug message when checking seq number of a delayed ref
btrfs: update outdated comment at btrfs_orphan_cleanup()
btrfs: update outdated comment at btrfs_replace_file_extents()
btrfs: make reflinks respect O_SYNC O_DSYNC and S_SYNC flags
btrfs: fix exhaustion of the system chunk array due to concurrent allocations
btrfs: improve btree readahead for full send operations
btrfs: fix race between transaction aborts and fsyncs leading to use-after-free
btrfs: fix metadata extent leak after failure to create subvolume
btrfs: fix race when picking most recent mod log operation for an old root
btrfs: zoned: fix unpaired block group unfreeze during device replace

Goldwyn Rodrigues (2):
btrfs: remove force argument from run_delalloc_nocow()
btrfs: remove mirror argument from btrfs_csum_verify_data()

Ira Weiny (4):
btrfs: convert kmap to kmap_local_page, simple cases
btrfs: raid56: convert kmaps to kmap_local_page
btrfs: integrity-checker: use kmap_local_page in __btrfsic_submit_bio
btrfs: integrity-checker: convert block context kmap's to kmap_local_page

Jiapeng Chong (1):
btrfs: assign proper values to a bool variable in dev_extent_hole_check_zoned

Johannes Thumshirn (5):
btrfs: remove duplicated in_range() macro
btrfs: zoned: fail mount if the device does not support zone append
btrfs: zoned: reset zones of relocated block groups
btrfs: rename delete_unused_bgs_mutex to reclaim_bgs_lock
btrfs: zoned: automatically reclaim zones

Josef Bacik (44):
btrfs: add a i_mmap_lock to our inode
btrfs: use btrfs_inode_lock/btrfs_inode_unlock inode lock helpers
btrfs: exclude mmaps while doing remap
btrfs: exclude mmap from happening during all fallocate operations
btrfs: use percpu_read_positive instead of sum_positive for need_preempt
btrfs: convert some BUG_ON()'s to ASSERT()'s in do_relocation
btrfs: convert BUG_ON()'s in relocate_tree_block
btrfs: handle errors from select_reloc_root()
btrfs: convert BUG_ON()'s in select_reloc_root() to proper errors
btrfs: check record_root_in_trans related failures in select_reloc_root
btrfs: do proper error handling in record_reloc_root_in_trans
btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename_exchange
btrfs: handle btrfs_record_root_in_trans failure in btrfs_rename
btrfs: handle btrfs_record_root_in_trans failure in btrfs_delete_subvolume
btrfs: handle btrfs_record_root_in_trans failure in btrfs_recover_log_trees
btrfs: handle btrfs_record_root_in_trans failure in create_subvol
btrfs: handle btrfs_record_root_in_trans failure in relocate_tree_block
btrfs: handle btrfs_record_root_in_trans failure in start_transaction
btrfs: handle record_root_in_trans failure in qgroup_account_snapshot
btrfs: handle record_root_in_trans failure in btrfs_record_root_in_trans
btrfs: handle record_root_in_trans failure in create_pending_snapshot
btrfs: return an error from btrfs_record_root_in_trans
btrfs: have proper error handling in btrfs_init_reloc_root
btrfs: do proper error handling in create_reloc_root
btrfs: validate root::reloc_root after recording root in trans
btrfs: handle btrfs_update_reloc_root failure in commit_fs_roots
btrfs: change insert_dirty_subvol to return errors
btrfs: handle btrfs_update_reloc_root failure in insert_dirty_subvol
btrfs: handle btrfs_update_reloc_root failure in prepare_to_merge
btrfs: do proper error handling in btrfs_update_reloc_root
btrfs: convert logic BUG_ON()'s in replace_path to ASSERT()'s
btrfs: handle btrfs_cow_block errors in replace_path
btrfs: handle btrfs_search_slot failure in replace_path
btrfs: handle errors in reference count manipulation in replace_path
btrfs: handle extent reference errors in do_relocation
btrfs: tree-checker: check for BTRFS_BLOCK_FLAG_FULL_BACKREF being set improperly
btrfs: remove the extent item sanity checks in relocate_block_group
btrfs: do proper error handling in create_reloc_inode
btrfs: handle __add_reloc_root failures in btrfs_recover_relocation
btrfs: do not panic in __add_reloc_root
btrfs: cleanup error handling in prepare_to_merge
btrfs: handle extent corruption with select_one_root properly
btrfs: do proper error handling in merge_reloc_roots
btrfs: check return value of btrfs_commit_transaction in relocation

Matthew Wilcox (Oracle) (1):
btrfs: add and use readahead_batch_length

Naohiro Aota (1):
btrfs: zoned: move log tree node allocation out of log_root_tree->log_mutex

Nikolay Borisov (8):
btrfs: make btrfs_replace_file_extents take btrfs_inode
btrfs: make find_desired_extent take btrfs_inode
btrfs: replace offset_in_entry with in_range
btrfs: replace open coded while loop with proper construct
btrfs: simplify commit logic in try_flush_qgroup
btrfs: remove btrfs_inode parameter from btrfs_delayed_inode_reserve_metadata
btrfs: simplify code flow in btrfs_delayed_inode_reserve_metadata
btrfs: don't opencode extent_changeset_free

Qu Wenruo (19):
btrfs: fix comment for btrfs ordered extent flag bits
btrfs: add sysfs interface for supported sectorsize
btrfs: use min() to replace open-code in btrfs_invalidatepage()
btrfs: remove unnecessary variable shadowing in btrfs_invalidatepage()
btrfs: subpage: introduce helpers for dirty status
btrfs: subpage: introduce helpers for writeback status
btrfs: subpage: do more sanity checks on metadata page dirtying
btrfs: subpage: support metadata checksum calculation at write time
btrfs: make alloc_extent_buffer() check subpage dirty bitmap
btrfs: support page uptodate assertions in subpage mode
btrfs: make set/clear_extent_buffer_dirty() subpage compatible
btrfs: make set_btree_ioerr accept extent buffer and be subpage compatible
btrfs: subpage: add overview comments
btrfs: introduce end_bio_subpage_eb_writepage() function
btrfs: introduce write_one_subpage_eb() function
btrfs: make lock_extent_buffer_for_io() to be subpage compatible
btrfs: introduce submit_eb_subpage() to submit a subpage metadata page
btrfs: handle remount to no compress during compression
btrfs: more graceful errors/warnings on 32bit systems when reaching limits

Wan Jiabing (1):
btrfs: move forward declarations to the beginning of extent_io.h

fs/btrfs/Makefile | 2 +-
fs/btrfs/backref.c | 33 +-
fs/btrfs/block-group.c | 207 ++++++++-
fs/btrfs/block-group.h | 3 +
fs/btrfs/btrfs_inode.h | 33 +-
fs/btrfs/check-integrity.c | 14 +-
fs/btrfs/compression.c | 15 +-
fs/btrfs/ctree.c | 984 +++----------------------------------------
fs/btrfs/ctree.h | 80 ++--
fs/btrfs/delayed-inode.c | 35 +-
fs/btrfs/delayed-ref.c | 31 +-
fs/btrfs/disk-io.c | 162 +++++--
fs/btrfs/extent-tree.c | 21 +-
fs/btrfs/extent_io.c | 439 ++++++++++++++++---
fs/btrfs/extent_io.h | 4 +-
fs/btrfs/file-item.c | 1 +
fs/btrfs/file.c | 118 +++---
fs/btrfs/free-space-cache.c | 9 +-
fs/btrfs/inode.c | 125 +++---
fs/btrfs/ioctl.c | 51 ++-
fs/btrfs/lzo.c | 9 +-
fs/btrfs/ordered-data.c | 19 +-
fs/btrfs/ordered-data.h | 4 +-
fs/btrfs/qgroup.c | 47 +--
fs/btrfs/raid56.c | 70 +--
fs/btrfs/reflink.c | 65 ++-
fs/btrfs/relocation.c | 448 +++++++++++++++-----
fs/btrfs/scrub.c | 13 +-
fs/btrfs/send.c | 43 +-
fs/btrfs/space-info.c | 4 +-
fs/btrfs/subpage.c | 140 ++++++
fs/btrfs/subpage.h | 7 +
fs/btrfs/super.c | 26 ++
fs/btrfs/sysfs.c | 50 +++
fs/btrfs/transaction.c | 59 ++-
fs/btrfs/transaction.h | 9 +-
fs/btrfs/tree-checker.c | 5 +
fs/btrfs/tree-log.c | 21 +-
fs/btrfs/tree-mod-log.c | 929 ++++++++++++++++++++++++++++++++++++++++
fs/btrfs/tree-mod-log.h | 53 +++
fs/btrfs/volumes.c | 123 ++++--
fs/btrfs/volumes.h | 1 +
fs/btrfs/zoned.c | 7 +
fs/btrfs/zoned.h | 6 +
include/linux/pagemap.h | 9 +
include/trace/events/btrfs.h | 12 +
46 files changed, 2964 insertions(+), 1582 deletions(-)
create mode 100644 fs/btrfs/tree-mod-log.c
create mode 100644 fs/btrfs/tree-mod-log.h