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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Added new ext4 debugging ioctls to allow userspace to get information
about the state of the extent status cache.
Dropped workaround for pre-1970 dates which were encoded incorrectly
in pre-4.4 kernels. Since both the kernel correctly generates, and
e2fsck detects and fixes this issue for the past four years, it'e time
to drop the workaround. (Also, it's not like files with dates in the
distant past were all that common in the first place.)
A lot of miscellaneous bug fixes and cleanups, including some ext4
Documentation fixes. Also included are two minor bug fixes in
fs/unicode"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
unicode: make array 'token' static const, makes object smaller
unicode: Move static keyword to the front of declarations
ext4: add missing bigalloc documentation.
ext4: fix kernel oops caused by spurious casefold flag
ext4: fix integer overflow when calculating commit interval
ext4: use percpu_counters for extent_status cache hits/misses
ext4: fix potential use after free after remounting with noblock_validity
jbd2: add missing tracepoint for reserved handle
ext4: fix punch hole for inline_data file systems
ext4: rework reserved cluster accounting when invalidating pages
ext4: documentation fixes
ext4: treat buffers with write errors as containing valid data
ext4: fix warning inside ext4_convert_unwritten_extents_endio
ext4: set error return correctly when ext4_htree_store_dirent fails
ext4: drop legacy pre-1970 encoding workaround
ext4: add new ioctl EXT4_IOC_GET_ES_CACHE
ext4: add a new ioctl EXT4_IOC_GETSTATE
ext4: add a new ioctl EXT4_IOC_CLEAR_ES_CACHE
jbd2: flush_descriptor(): Do not decrease buffer head's ref count
ext4: remove unnecessary error check
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This commit aims to fix the following issues in ext4 documentation:
- Flexible block group docs said that the aim was to group block
metadata together instead of block group metadata.
- The documentation consistly uses "location" instead of "block number".
It is easy to confuse location to be an absolute offset on disk. Added
a line to clarify all location values are in terms of block numbers.
- Dirent2 docs said that the rec_len field is shortened instead of the
name_len field.
- Typo in bg_checksum description.
- Inode size is 160 bytes now, and hence i_extra_isize is now 32.
- Cluster size formula was incorrect, it did not include the +10 to
s_log_cluster_size value.
- Typo: there were two s_wtime_hi in the superblock struct.
- Superblock struct was outdated, added the new fields which were part
of s_reserved earlier.
- Multiple mount protection seems to be implemented in fs/ext4/mmp.c.
Signed-off-by: Ayush Ranjan <ayushr2@illinois.edu>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
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Document the format of verity files on ext4, and the corresponding inode
and superblock flags.
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
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Move the ext4 data structures book to Documentation/filesystems/ext4/
since the administrative information moved elsewhere.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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Linus Torvalds
Ayush Ranjan
Eric Biggers
Darrick J. Wong