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Merge tag 'for-6.17-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs updates from David Sterba:
"A number of usability and feature updates, scattered performance
improvements and fixes. Highlight of the core changes is getting
closer to enabling large folios (now behind a config option).
User visible changes:
- update defrag ioctl, add new flag to request no compression on
existing extents
- restrict writes to block devices after mount
- in experimental config, enable large folios for data, almost
complete but not widely tested
- add stats tracking duration of critical section in transaction
commit to /sys/fs/btrfs/FSID/commit_stats
Performance improvements:
- caching of lookup results of free space bitmap (20% runtime
improvement on an empty file creation benchmark)
- accessors to metadata (b-tree items) simplified and optimized,
minor improvement in metadata-heavy workloads
- readahead on compressed data improves sequential read
- the xarray for extent buffers is indexed by denser keys, leading to
better packing of the nodes (50-70% reduction of leaf nodes)
Notable fixes:
- stricter compression mount option parsing
- send properly emits fallocate command for file holes when protocol
v2 is used
- fix overallocation of chunks with mount option 'ssd_spread', due to
interaction with size classes not finding the right chunk
(workaround: manual reclaim by 'usage' balance filter)
- various quota enable/disable races with rescan, more verbose
notifications about inconsistent state
- populate otime in tree-log during log replay
- handle ENOSPC when NOCOW file is used with mmap()
Core:
- large data folios enabled in experimental config
- improved error handling, transaction abort call sites
- in zoned mode, allocate reloc block group on mount to make sure
there's always one available for zone reclaim under heavy load
- rework device opening, they're always open as read-only and delayed
until the super block is created, allowing the restricted writes
after mount
- preparatory work for adding blk_holder_ops, allowing device
freeze/thaw in the future
Cleanups, refactoring:
- type and naming unifications (int/bool, return variables)
- rb-tree helper refactoring and simplifications
- reorder memory allocations to less critical places
- RCU string (used for device name) refactoring and API removal
- replace all remaining use of strcpy()"
* tag 'for-6.17-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: (209 commits)
btrfs: send: use fallocate for hole punching with send stream v2
btrfs: unfold transaction aborts when writing dirty block groups
btrfs: use saner variable type and name to indicate extrefs at add_inode_ref()
btrfs: don't skip remaining extrefs if dir not found during log replay
btrfs: don't ignore inode missing when replaying log tree
btrfs: enable large data folios for data reloc inode
btrfs: output more info when btrfs_subpage_assert() failed
btrfs: reloc: unconditionally invalidate the page cache for each cluster
btrfs: defrag: add flag to force no-compression
btrfs: fix ssd_spread overallocation
btrfs: zoned: requeue to unused block group list if zone finish failed
btrfs: zoned: do not remove unwritten non-data block group
btrfs: remove btrfs_clear_extent_bits()
btrfs: use cached state when falling back from NOCoW write to CoW write
btrfs: set EXTENT_NORESERVE before range unlock in btrfs_truncate_block()
btrfs: don't print relocation messages from auto reclaim
btrfs: remove redundant auto reclaim log message
btrfs: make btrfs_check_nocow_lock() check more than one extent
btrfs: assert we can NOCOW the range in btrfs_truncate_block()
btrfs: update function comment for btrfs_check_nocow_lock()
...
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.