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git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs
Pull ntfs resurrection from Namjae Jeon:
"Ever since Kari Argillander’s 2022 report [1] regarding the state of
the ntfs3 driver, I have spent the last 4 years working to provide
full write support and current trends (iomap, no buffer head, folio),
enhanced performance, stable maintenance, utility support including
fsck for NTFS in Linux.
This new implementation is built upon the clean foundation of the
original read-only NTFS driver, adding:
- Write support:
Implemented full write support based on the classic read-only NTFS
driver. Added delayed allocation to improve write performance
through multi-cluster allocation and reduced fragmentation of the
cluster bitmap.
- iomap conversion:
Switched buffered IO (reads/writes), direct IO, file extent
mapping, readpages, and writepages to use iomap.
- Remove buffer_head:
Completely removed buffer_head usage by converting to folios. As a
result, the dependency on CONFIG_BUFFER_HEAD has been removed from
Kconfig.
- Stability improvements:
The new ntfs driver passes 326 xfstests, compared to 273 for ntfs3.
All tests passed by ntfs3 are a complete subset of the tests passed
by this implementation. Added support for fallocate, idmapped
mounts, permissions, and more.
xfstests Results report:
Total tests run: 787
Passed : 326
Failed : 38
Skipped : 423
Failed tests breakdown:
- 34 tests require metadata journaling
- 4 other tests:
094: No unwritten extent concept in NTFS on-disk format
563: cgroup v2 aware writeback accounting not supported
631: RENAME_WHITEOUT support required
787: NFS delegation test"
Link: https://lore.kernel.org/all/da20d32b-5185-f40b-48b8-2986922d8b25@stargateuniverse.net/ [1]
[ Let's see if this undead filesystem ends up being of the "Easter
miracle" kind, or the "Nosferatu of filesystems" kind... ]
* tag 'ntfs-for-7.1-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs: (46 commits)
ntfs: remove redundant out-of-bound checks
ntfs: add bound checking to ntfs_external_attr_find
ntfs: add bound checking to ntfs_attr_find
ntfs: fix ignoring unreachable code warnings
ntfs: fix inconsistent indenting warnings
ntfs: fix variable dereferenced before check warnings
ntfs: prefer IS_ERR_OR_NULL() over manual NULL check
ntfs: harden ntfs_listxattr against EA entries
ntfs: harden ntfs_ea_lookup against malformed EA entries
ntfs: check $EA query-length in ntfs_ea_get
ntfs: validate WSL EA payload sizes
ntfs: fix WSL ea restore condition
ntfs: add missing newlines to pr_err() messages
ntfs: fix pointer/integer casting warnings
ntfs: use ->mft_no instead of ->i_ino in prints
ntfs: change mft_no type to u64
ntfs: select FS_IOMAP in Kconfig
ntfs: add MODULE_ALIAS_FS
ntfs: reduce stack usage in ntfs_write_mft_block()
ntfs: fix sysctl table registration and path
...
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Remove redundant out-of-bounds validations.
Since ntfs_attr_find and ntfs_external_attr_find
now validate the attribute value offsets and
lengths against the bounds of the MFT record block,
performing subsequent bounds checking in caller
functions like ntfs_attr_lookup is no longer necessary.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Add bound validation in ntfs_external_attr_find to
prevent out-of-bounds memory accesses. This ensures
that the attribute record's length, name offset, and
both resident and non-resident value offsets strictly
fall within the safe boundaries of the MFT record.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Add bound validations in ntfs_attr_find to ensure
attribute value offsets and lengths are safe to
access. It verifies that resident attributes meet
type-specific minimum length requirements and
check the mapping_pairs_offset boundaries for
non-resident attributes.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Detected by Smatch.
inode.c:1796 load_attribute_list_mount() warn:
ignoring unreachable code.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Detected by Smatch.
ndex.c:2041 ntfs_index_walk_up() warn:
inconsistent indenting
mft.c:2462 ntfs_mft_record_alloc() warn:
inconsistent indenting
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Detected by Smatch.
lcnalloc.c:736 ntfs_cluster_alloc() error:
we previously assumed 'rl' could be null (see line 719)
inode.c:3275 ntfs_inode_close() warn:
variable dereferenced before check 'tmp_nis' (see line 3255)
attrib.c:4952 ntfs_attr_remove() warn:
variable dereferenced before check 'ni' (see line 4951)
dir.c:1035 ntfs_readdir() error:
we previously assumed 'private' could be null (see line 850)
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Use IS_ERR_OR_NULL() instead of manual NULL and IS_ERR() checks.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Validate every EA entry only if the buffer length is required to prevent
large memory allocation.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Validate p_ea->ea_name_length tightly, and the used entry size
for every EA.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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if ea_info_qlen exceeds all_ea_size, OOB can happen.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Enforce the exact-size reads for $LXUID, $LXGID, $LXMOD, $LXDEV.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Use NTFS_VOL_GID(not NTFS_VOL_UID) for restoring the gid, and call
ntfs_ea_get_wsl_inode() only when $EA_INFORMATION exists.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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There is an inconsistent use of pr_err() statements in the current code.
Many error messages are missing the \n termination, what results in the
messages being printed with a delay, only after a next printk() line is
printed. It prevents relying on printk() to monitor the driver errors.
This patch is modifying only text messages, no functional change.
Signed-off-by: Woody Suwalski <terraluna977@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Use uintptr_t for both conversion paths to fix the warnings.
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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This improves log accuracy for NTFS debugging and removes unnecessary
reliance on the VFS i_ino field ahead of the core VFS type change.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Changes the type of ntfs_inode::mft_no from unsigned long to u64
to safely handle the full 48-bit range without truncation risk, especially
in preparation for broader VFS inode number type (i_ino:u64) and to
improve consistency with ntfs driver practices.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Add 'select FS_IOMAP' to the NTFS_FS Kconfig option so that CONFIG_NTFS_FS
automatically enables CONFIG_FS_IOMAP when built.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Add missing MODUE_ALIAS record to the ntfs driver to allow automatic
loading of the module.
Signed-off-by: Woody Suwalski <terraluna977@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The use of two large arrays in this function makes the stack frame exceed
the warning limit in some configurations, especially with KASAN enabled.
When CONFIG_PAGE_SIZE is set to 65536, each of the arrays contains 128
pointers, so the combined size is 2KB:
fs/ntfs/mft.c: In function 'ntfs_write_mft_block.isra':
fs/ntfs/mft.c:2891:1: error: the frame size of 2640 bytes is larger than 1536 bytes [-Werror=frame-larger-than=]
Use dynamic allocation of these arrays to avoid getting into dangerously
high stack usage.
Unfortunately, allocating memory in the writepages() code path can be
problematic in case of low memory situations, so it would be better to
rework the code more widely to avoid the allocation entirely.
Fixes: 115380f9a2f9 ("ntfs: update mft operations")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The presence of a sentinel (an empty {}) at the end of the ctl_table array
now causes a "sysctl table check failed" error because the kernel attempts
to validate the null entry as a functional node.
Deleted the empty {} from the ntfs_sysctls array to prevent
the "procname is null" and "No proc_handler" errors and updated the base
path from "fs" to "fs/ntfs" to ensure the ntfs-debug node is correctly
located under /proc/sys/fs/ntfs/.
Reported-by: Woody Suwalski <terraluna977@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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There is a spelling mistake in an ntfs_debug message. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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In the error path for ntfs_attr_map_whole_runlist() the lock is not
released.
Add release for lock.
Detected by Smatch:
fs/ntfs/attrib.c:5197 ntfs_non_resident_attr_collapse_range() warn:
inconsistent returns '&ni->runlist.lock'.
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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If ntfs_attr_iget() fails no error code is assigned to be returned.
Detected by Smatch:
fs/ntfs/attrib.c:2665 ntfs_attr_add() warn:
missing error code 'err'
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The variable ni has the possiblity of being null and is checked for it
but, only after it was dereferenced in a log message.
Put check before dereference.
Detected by Smatch:
fs/ntfs/attrib.c:2115 ntfs_resident_attr_record_add() warn:
variable dereferenced before check 'ni' (see line 2111)
fs/ntfs/attrib.c:2237 ntfs_non_resident_attr_record_add() warn:
variable dereferenced before check 'ni' (see line 2232)
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The variable name_len is checked to see if it's larger than the macro
NTFS_MAX_NAME_LEN however this condition is impossible because name_len
is of type u8 and NTFS_MAX_NAME_LEN is hardcoded to be 255.
Detected by Smatch:
fs/ntfs/namei.c:1175 __ntfs_link() warn:
impossible condition '(name_len > 255) => (0-255 > 255)'
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The variable err is confirmed to be 0 and then never reassigned in the
success path. The function then returns with ERR_PTR(err) which just
equals NULL and can be misleading.
Detected by Smatch:
fs/ntfs/namei.c:1091 ntfs_mkdir() warn:
passing zero to 'ERR_PTR'
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Remove unnecessary semicolons reported by Coccinelle/coccicheck and the
semantic patch at scripts/coccinelle/misc/semicolon.cocci.
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The variable ctx can be null and once confirmed to be null in its error
path goes to label err_out. Once there it can be immediately dereferenced
by the function ntfs_attr_put_search_ctx() which has no null pointer check.
Detected by Smatch:
fs/ntfs/ea.c:687 ntfs_new_attr_flags() error:
we previously assumed 'ctx' could be null (see line 577)
Add null pointer check before running ntfs_attr_put_search_ctx() in
error path.
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Introduce Kconfig and Makefile for remade ntfs.
And this patch make ntfs and ntfs3 mutually exclusive so only one can be
built-in(y), while both can still be built as modules(m).
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Updates various miscellaneous operations including collation,
debugging, logfile handling, unicode string processing, bdev io helpers,
object id system file handling.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Implement support for Extended Attributes and Reparse Points, enabling
Posix ACL support and, and compatibility with Windows Subsystem for
Linux (WSL) metadata.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Updates runlist handling and cluster allocation to support
contiguous allocations and filesystem trimming.
Improve the runlist API to handle allocation failures and introduces
discard support.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Overhaul the attribute operations to support write access, including
full attribute list management for handling multiple MFT records, and
compressed writes.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Update the address space operations to use the iomap framework,
replacing legacy buffer-head based code.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Rewrite the file operations to utilize the iomap infrastructure,
replacing the legacy buffer-head based implementation.
Implement ntfs_setattr() with size change handling, uid/gid/mode.
Add support for Direct I/O.
Add support for fallocate with the FALLOC_FL_KEEP_SIZE,
FALLOC_FL_PUNCH_HOLE, FALLOC_FL_COLLAPSE_RANGE, FALLOC_FL_INSERT_RANGE
and FALLOC_FL_ALLOCATE_RANGE modes.
Implement .llseek with SEEK_DATA / SEEK_HOLE support.
Implement ntfs_fiemap() using iomap_fiemap().
Add FS_IOC_SHUTDOWN, FS_IOC_[GS]ETFSLABEL, FITRIM ioctl support.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Update the directory and index operations to support full read-write
functionality and use the folio API, including directory modification.
Acked-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Refactors MFT record handling to use folio APIs with consistency
validation, and improving allocation extension and writeback paths
for and .
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Add extent inode loading via ntfs_extent_inode_open() and
ntfs_inode_attach_all_extents().
Allow dynamic creation of with ntfs_inode_add_attrlist() when
the base MFT record overflows.
Introduce ntfs_inode_free_space() to move attributes out of
the base record on demand.
Implement direct attribute I/O through ntfs_inode_attr_pread() and
ntfs_inode_attr_pwrite().
Implement .create, .unlink, .mkdir, .rmdir, .rename, .symlink, .mknod,
.link callbacks.
Introduce ntfs_non_resident_dealloc_clusters() to free clusters of
non-resident attributes during inode eviction.
Add ntfs_drop_big_inode() logic to safely truncate and deallocate
clusters.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Update the super block operations to support the new fs_context-based
mount API, full read-write support including ->sync_fs, and file system
shutdown support.
Update ntfs_statfs() to provide statistics using atomic counters for free
clusters and MFT records.
Add a dedicated workqueue to compute the total number of free clusters by
scanning asynchronously. Synchronous bitmap scanning during mount
can take a very long time on large volumes, severely delaying mount
completion. Moving this to the background allows mount to finish almost
immediately.
Implement ntfs_write_volume_label() to allow changing the volume label.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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Update the NTFS filesystem driver's in-memory and on-disk structures:
- Introduce the infrastructure and initial support for reparse
points and EA attribute.
- Refactor the core ntfs_inode and ntfs_volume structures to support
new features such as iomap.
- Remove the unnecessary types.h and endian.h headers.
- Reorganize the comments in headers for better readability, including
fixing warnings from checkpatch.pl.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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This reverts commit 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89.
Reverts the removal of the classic read-only ntfs driver to
serve as the base for a new read-write ntfs implementation.
If we stack changes on top of the revert patch, It will significantly
reduce the diff size, making the review easier.
This revert intentionally excludes the restoration of Kconfig and
Makefile. The Kconfig and Makefile will be added back in the final patch
of this series, enabling the driver only after all features and
improvements have been applied.
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
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The replacement, NTFS3, was merged over two years ago. It is now time to
remove the original from the tree as it is the last user of several APIs,
and it is not worth changing.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20240115072025.2071931-1-willy@infradead.org
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Dave Chinner <david@fromorbit.com>
Cc: Anton Altaparmakov <anton@tuxera.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pull sysctl updates from Luis Chamberlain:
"To help make the move of sysctls out of kernel/sysctl.c not incur a
size penalty sysctl has been changed to allow us to not require the
sentinel, the final empty element on the sysctl array. Joel Granados
has been doing all this work.
In the v6.6 kernel we got the major infrastructure changes required to
support this. For v6.7 we had all arch/ and drivers/ modified to
remove the sentinel. For v6.8-rc1 we get a few more updates for fs/
directory only.
The kernel/ directory is left but we'll save that for v6.9-rc1 as
those patches are still being reviewed. After that we then can expect
also the removal of the no longer needed check for procname == NULL.
Let us recap the purpose of this work:
- this helps reduce the overall build time size of the kernel and run
time memory consumed by the kernel by about ~64 bytes per array
- the extra 64-byte penalty is no longer inncurred now when we move
sysctls out from kernel/sysctl.c to their own files
Thomas Weißschuh also sent a few cleanups, for v6.9-rc1 we expect to
see further work by Thomas Weißschuh with the constificatin of the
struct ctl_table.
Due to Joel Granados's work, and to help bring in new blood, I have
suggested for him to become a maintainer and he's accepted. So for
v6.9-rc1 I look forward to seeing him sent you a pull request for
further sysctl changes. This also removes Iurii Zaikin as a maintainer
as he has moved on to other projects and has had no time to help at
all"
* tag 'sysctl-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
sysctl: remove struct ctl_path
sysctl: delete unused define SYSCTL_PERM_EMPTY_DIR
coda: Remove the now superfluous sentinel elements from ctl_table array
sysctl: Remove the now superfluous sentinel elements from ctl_table array
fs: Remove the now superfluous sentinel elements from ctl_table array
cachefiles: Remove the now superfluous sentinel element from ctl_table array
sysclt: Clarify the results of selftest run
sysctl: Add a selftest for handling empty dirs
sysctl: Fix out of bounds access for empty sysctl registers
MAINTAINERS: Add Joel Granados as co-maintainer for proc sysctl
MAINTAINERS: remove Iurii Zaikin from proc sysctl
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the series
'maple_tree: add mt_free_one() and mt_attr() helpers'
'Some cleanups of maple tree'
- In the series 'mm: use memmap_on_memory semantics for dax/kmem'
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few fixes)
in the patch series
'Add folio_zero_tail() and folio_fill_tail()'
'Make folio_start_writeback return void'
'Fix fault handler's handling of poisoned tail pages'
'Convert aops->error_remove_page to ->error_remove_folio'
'Finish two folio conversions'
'More swap folio conversions'
- Kefeng Wang has also contributed folio-related work in the series
'mm: cleanup and use more folio in page fault'
- Jim Cromie has improved the kmemleak reporting output in the series
'tweak kmemleak report format'.
- In the series 'stackdepot: allow evicting stack traces' Andrey
Konovalov to permits clients (in this case KASAN) to cause eviction
of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series 'mm:
page_alloc: fixes for high atomic reserve caluculations'.
- Dmitry Rokosov has added to the samples/ dorectory some sample code
for a userspace memcg event listener application. See the series
'samples: introduce cgroup events listeners'.
- Some mapletree maintanance work from Liam Howlett in the series
'maple_tree: iterator state changes'.
- Nhat Pham has improved zswap's approach to writeback in the series
'workload-specific and memory pressure-driven zswap writeback'.
- DAMON/DAMOS feature and maintenance work from SeongJae Park in the
series
'mm/damon: let users feed and tame/auto-tune DAMOS'
'selftests/damon: add Python-written DAMON functionality tests'
'mm/damon: misc updates for 6.8'
- Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
memcg: subtree stats flushing and thresholds'.
- In the series 'Multi-size THP for anonymous memory' Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series 'More buffer_head
cleanups'.
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
Add ksm advisor'. This is a governor which tunes KSM's scanning
aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory use
in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.
- Matthew Wilcox has performed some maintenance work on the writeback
code, both code and within filesystems. The series is 'Clean up the
writeback paths'.
- Andrey Konovalov has optimized KASAN's handling of alloc and free
stack traces for secondary-level allocators, in the series 'kasan:
save mempool stack traces'.
- Andrey also performed some KASAN maintenance work in the series
'kasan: assorted clean-ups'.
- David Hildenbrand has gone to town on the rmap code. Cleanups, more
pte batching, folio conversions and more. See the series 'mm/rmap:
interface overhaul'.
- Kinsey Ho has contributed some maintenance work on the MGLRU code
in the series 'mm/mglru: Kconfig cleanup'.
- Matthew Wilcox has contributed lruvec page accounting code cleanups
in the series 'Remove some lruvec page accounting functions'"
* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
mm, treewide: introduce NR_PAGE_ORDERS
selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
selftests/mm: skip test if application doesn't has root privileges
selftests/mm: conform test to TAP format output
selftests: mm: hugepage-mmap: conform to TAP format output
selftests/mm: gup_test: conform test to TAP format output
mm/selftests: hugepage-mremap: conform test to TAP format output
mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
mm/memcontrol: remove __mod_lruvec_page_state()
mm/khugepaged: use a folio more in collapse_file()
slub: use a folio in __kmalloc_large_node
slub: use folio APIs in free_large_kmalloc()
slub: use alloc_pages_node() in alloc_slab_page()
mm: remove inc/dec lruvec page state functions
mm: ratelimit stat flush from workingset shrinker
kasan: stop leaking stack trace handles
mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
mm/mglru: add dummy pmd_dirty()
...
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Convert the function to be compatible with writepage_t so that it can be
passed to write_cache_pages() by blkdev. This removes a call to
compound_head(). We can also remove the function export as both callers
are built-in.
Link: https://lkml.kernel.org/r/20231215200245.748418-14-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
Remove sentinel elements ctl_table struct. Special attention was placed in
making sure that an empty directory for fs/verity was created when
CONFIG_FS_VERITY_BUILTIN_SIGNATURES is not defined. In this case we use the
register sysctl call that expects a size.
Signed-off-by: Joel Granados <j.granados@samsung.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
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Correct the kernel-doc function parameter warnings for function
ntfs_dir_fsync() to prevent the following kernel-doc warnings:
dir.c:1489: warning: Function parameter or member 'start' not described in 'ntfs_dir_fsync'
dir.c:1489: warning: Function parameter or member 'end' not described in 'ntfs_dir_fsync'
dir.c:1489: warning: Excess function parameter 'dentry' description in 'ntfs_dir_fsync'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20231219045414.24670-1-rdunlap@infradead.org
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Cc: Anton Altaparmakov <anton@tuxera.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: <linux-ntfs-dev@lists.sourceforge.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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There were already assertions that we were not passing a tail page to
error_remove_page(), so make the compiler enforce that by converting
everything to pass and use a folio.
Link: https://lkml.kernel.org/r/20231117161447.2461643-7-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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It is hard to find where mapping->private_lock, mapping->private_list and
mapping->private_data are used, due to private_XXX being a relatively
common name for variables and structure members in the kernel. To fit
with other members of struct address_space, rename them all to have an
i_ prefix. Tested with an allmodconfig build.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://lore.kernel.org/r/20231117215823.2821906-1-willy@infradead.org
Acked-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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