- Refactor the incore extent map manipulations to use a cursor instead of
directly modifying extent data.
- Refactor the incore extent map cursor to use an in-memory btree instead
of a single high-order allocation. This eliminates a major source of
complaints about insufficient memory when opening a heavily fragmented
file into a system whose memory is also heavily fragmented.
- Fix a longstanding bug where deleting a file with a complex extended
attribute btree incorrectly handled memory pointers, which could lead
to memory corruption.
- Improve metadata validation to eliminate crashing problems found while
fuzzing xfs.
- Move the error injection tag definitions into libxfs to be shared with
userspace components.
- Fix some log recovery bugs where we'd underflow log block position
vector and incorrectly fail log recovery.
- Drain the buffer lru after log recovery to force recovered buffers back
through the verifiers after mount. On a v4 filesystem the log never
attaches verifiers during log replay (v5 does), so we could end up with
buffers marked verified but without having ever been verified.
- Fix various other bugs.
- Introduce the first part of a new online fsck tool. The new fsck tool
will be able to iterate every piece of metadata in the filesystem to
look for obvious errors and corruptions. In the next release cycle
the checking will be extended to cross-reference with the other fs
metadata, so this feature should only be used by the developers in the
mean time.
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Merge tag 'xfs-4.15-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Darrick Wong:
"xfs: great scads of new stuff for 4.15.
This merge cycle, we're making some substantive changes to XFS. The
in-core extent mappings have been refactored to use proper iterators
and a btree to handle heavily fragmented files without needing
high-order memory allocations; some important log recovery bug fixes;
and the first part of the online fsck functionality.
(The online fsck feature is disabled by default and more pieces of it
will be coming in future release cycles.)
This giant pile of patches has been run through a full xfstests run
over the weekend and through a quick xfstests run against this
morning's master, with no major failures reported.
New in this version:
- Refactor the incore extent map manipulations to use a cursor
instead of directly modifying extent data.
- Refactor the incore extent map cursor to use an in-memory btree
instead of a single high-order allocation. This eliminates a major
source of complaints about insufficient memory when opening a
heavily fragmented file into a system whose memory is also heavily
fragmented.
- Fix a longstanding bug where deleting a file with a complex
extended attribute btree incorrectly handled memory pointers, which
could lead to memory corruption.
- Improve metadata validation to eliminate crashing problems found
while fuzzing xfs.
- Move the error injection tag definitions into libxfs to be shared
with userspace components.
- Fix some log recovery bugs where we'd underflow log block position
vector and incorrectly fail log recovery.
- Drain the buffer lru after log recovery to force recovered buffers
back through the verifiers after mount. On a v4 filesystem the log
never attaches verifiers during log replay (v5 does), so we could
end up with buffers marked verified but without having ever been
verified.
- Fix various other bugs.
- Introduce the first part of a new online fsck tool. The new fsck
tool will be able to iterate every piece of metadata in the
filesystem to look for obvious errors and corruptions. In the next
release cycle the checking will be extended to cross-reference with
the other fs metadata, so this feature should only be used by the
developers in the mean time"
* tag 'xfs-4.15-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (131 commits)
xfs: on failed mount, force-reclaim inodes after unmounting quota controls
xfs: check the uniqueness of the AGFL entries
xfs: remove u_int* type usage
xfs: handle zero entries case in xfs_iext_rebalance_leaf
xfs: add comments documenting the rebalance algorithm
xfs: trivial indentation fixup for xfs_iext_remove_node
xfs: remove a superflous assignment in xfs_iext_remove_node
xfs: add some comments to xfs_iext_insert/xfs_iext_insert_node
xfs: fix number of records handling in xfs_iext_split_leaf
fs/xfs: Remove NULL check before kmem_cache_destroy
xfs: only check da node header padding on v5 filesystems
xfs: fix btree scrub deref check
xfs: fix uninitialized return values in scrub code
xfs: pass inode number to xfs_scrub_ino_set_{preen,warning}
xfs: refactor the directory data block bestfree checks
xfs: mark xlog_verify_dest_ptr STATIC
xfs: mark xlog_recover_check_summary STATIC
xfs: mark xfs_btree_check_lblock and xfs_btree_check_ptr static
xfs: remove unreachable error injection code in xfs_qm_dqget
xfs: remove unused debug counts for xfs_lock_inodes
...
808eb24e0e