linux.git/fs/ntfs3, branch v6.16 Linux kernel source tree Merge tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm 2025-06-02T23:00:26+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-06-02T23:00:26+00:00 fd1f8473503e5bf897bd3e8efe3545c0352954e6 Pull more MM updates from Andrew Morton: - "zram: support algorithm-specific parameters" from Sergey Senozhatsky adds infrastructure for passing algorithm-specific parameters into zram. A single parameter `winbits' is implemented at this time. - "memcg: nmi-safe kmem charging" from Shakeel Butt makes memcg charging nmi-safe, which is required by BFP, which can operate in NMI context. - "Some random fixes and cleanup to shmem" from Kemeng Shi implements small fixes and cleanups in the shmem code. - "Skip mm selftests instead when kernel features are not present" from Zi Yan fixes some issues in the MM selftest code. - "mm/damon: build-enable essential DAMON components by default" from SeongJae Park reworks DAMON Kconfig to make it easier to enable CONFIG_DAMON. - "sched/numa: add statistics of numa balance task migration" from Libo Chen adds more info into sysfs and procfs files to improve visibility into the NUMA balancer's task migration activity. - "selftests/mm: cow and gup_longterm cleanups" from Mark Brown provides various updates to some of the MM selftests to make them play better with the overall containing framework. * tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (43 commits) mm/khugepaged: clean up refcount check using folio_expected_ref_count() selftests/mm: fix test result reporting in gup_longterm selftests/mm: report unique test names for each cow test selftests/mm: add helper for logging test start and results selftests/mm: use standard ksft_finished() in cow and gup_longterm selftests/damon/_damon_sysfs: skip testcases if CONFIG_DAMON_SYSFS is disabled sched/numa: add statistics of numa balance task sched/numa: fix task swap by skipping kernel threads tools/testing: check correct variable in open_procmap() tools/testing/vma: add missing function stub mm/gup: update comment explaining why gup_fast() disables IRQs selftests/mm: two fixes for the pfnmap test mm/khugepaged: fix race with folio split/free using temporary reference mm: add CONFIG_PAGE_BLOCK_ORDER to select page block order mmu_notifiers: remove leftover stub macros selftests/mm: deduplicate test names in madv_populate kcov: rust: add flags for KCOV with Rust mm: rust: make CONFIG_MMU ifdefs more narrow mmu_gather: move tlb flush for VM_PFNMAP/VM_MIXEDMAP vmas into free_pgtables() mm/damon/Kconfig: enable CONFIG_DAMON by default ... 
Pull more MM updates from Andrew Morton:

 - "zram: support algorithm-specific parameters" from Sergey Senozhatsky
   adds infrastructure for passing algorithm-specific parameters into
   zram. A single parameter `winbits' is implemented at this time.

 - "memcg: nmi-safe kmem charging" from Shakeel Butt makes memcg
   charging nmi-safe, which is required by BFP, which can operate in NMI
   context.

 - "Some random fixes and cleanup to shmem" from Kemeng Shi implements
   small fixes and cleanups in the shmem code.

 - "Skip mm selftests instead when kernel features are not present" from
   Zi Yan fixes some issues in the MM selftest code.

 - "mm/damon: build-enable essential DAMON components by default" from
   SeongJae Park reworks DAMON Kconfig to make it easier to enable
   CONFIG_DAMON.

 - "sched/numa: add statistics of numa balance task migration" from Libo
   Chen adds more info into sysfs and procfs files to improve visibility
   into the NUMA balancer's task migration activity.

 - "selftests/mm: cow and gup_longterm cleanups" from Mark Brown
   provides various updates to some of the MM selftests to make them
   play better with the overall containing framework.

* tag 'mm-stable-2025-06-01-14-06' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (43 commits)
  mm/khugepaged: clean up refcount check using folio_expected_ref_count()
  selftests/mm: fix test result reporting in gup_longterm
  selftests/mm: report unique test names for each cow test
  selftests/mm: add helper for logging test start and results
  selftests/mm: use standard ksft_finished() in cow and gup_longterm
  selftests/damon/_damon_sysfs: skip testcases if CONFIG_DAMON_SYSFS is disabled
  sched/numa: add statistics of numa balance task
  sched/numa: fix task swap by skipping kernel threads
  tools/testing: check correct variable in open_procmap()
  tools/testing/vma: add missing function stub
  mm/gup: update comment explaining why gup_fast() disables IRQs
  selftests/mm: two fixes for the pfnmap test
  mm/khugepaged: fix race with folio split/free using temporary reference
  mm: add CONFIG_PAGE_BLOCK_ORDER to select page block order
  mmu_notifiers: remove leftover stub macros
  selftests/mm: deduplicate test names in madv_populate
  kcov: rust: add flags for KCOV with Rust
  mm: rust: make CONFIG_MMU ifdefs more narrow
  mmu_gather: move tlb flush for VM_PFNMAP/VM_MIXEDMAP vmas into free_pgtables()
  mm/damon/Kconfig: enable CONFIG_DAMON by default
  ...
ntfs3: use folios more in ntfs_compress_write() 2025-06-01T05:46:07+00:00 Matthew Wilcox (Oracle) willy@infradead.org 2025-05-14T17:06:03+00:00 80ae99c5727f35d2ed7e011fb0b72c2fe7c5a908 Remove the local 'page' variable and do everything in terms of folios. Removes the last user of copy_page_from_iter_atomic() and a hidden call to compound_head() in ClearPageDirty(). Link: https://lkml.kernel.org/r/20250514170607.3000994-3-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> 
Remove the local 'page' variable and do everything in terms of folios. 
Removes the last user of copy_page_from_iter_atomic() and a hidden call to
compound_head() in ClearPageDirty().

Link: https://lkml.kernel.org/r/20250514170607.3000994-3-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fs/ntfs3: remove ability to change compression on mounted volume 2025-05-19T09:17:33+00:00 Konstantin Komarov almaz.alexandrovich@paragon-software.com 2025-05-19T09:07:07+00:00 eeb0819318cc0c30161821d429ca022dfbedc6ac Remove all the code related to changing compression on the fly because it's not safe and not maintainable. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
Remove all the code related to changing compression on the fly because
it's not safe and not maintainable.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
fs/ntfs3: Fix handling of InitializeFileRecordSegment 2025-05-16T14:26:07+00:00 Konstantin Komarov almaz.alexandrovich@paragon-software.com 2025-04-23T18:01:15+00:00 766797c295b563449db2a3ce33342c3c04c5541a Make the logic of handling the InitializeFileRecordSegment operation similar to that in windows. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
Make the logic of handling the InitializeFileRecordSegment operation
similar to that in windows.

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
fs/ntfs3: Add missing direct_IO in ntfs_aops_cmpr 2025-04-28T09:17:09+00:00 Lizhi Xu lizhi.xu@windriver.com 2025-04-15T09:26:37+00:00 8b26c8c376b29cf29710fbfd093df194cefe26ad The ntfs3 can use the page cache directly, so its address_space_operations need direct_IO. Exit ntfs_direct_IO() if it is a compressed file. Fixes: b432163ebd15 ("fs/ntfs3: Update inode->i_mapping->a_ops on compression state") Reported-by: syzbot+e36cc3297bd3afd25e19@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=e36cc3297bd3afd25e19 Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
The ntfs3 can use the page cache directly, so its address_space_operations
need direct_IO. Exit ntfs_direct_IO() if it is a compressed file.

Fixes: b432163ebd15 ("fs/ntfs3: Update inode->i_mapping->a_ops on compression state")
Reported-by: syzbot+e36cc3297bd3afd25e19@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e36cc3297bd3afd25e19
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
fs/ntfs3: handle hdr_first_de() return value 2025-04-28T09:17:08+00:00 Andrey Vatoropin a.vatoropin@crpt.ru 2025-03-18T13:42:18+00:00 af5cab0e5b6f8edb0be51a9f47f3f620e0b4fd70 The hdr_first_de() function returns a pointer to a struct NTFS_DE. This pointer may be NULL. To handle the NULL error effectively, it is important to implement an error handler. This will help manage potential errors consistently. Additionally, error handling for the return value already exists at other points where this function is called. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
The hdr_first_de() function returns a pointer to a struct NTFS_DE. This
pointer may be NULL. To handle the NULL error effectively, it is important
to implement an error handler. This will help manage potential errors
consistently.

Additionally, error handling for the return value already exists at other
points where this function is called.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
fs/ntfs3: Drop redundant NULL check 2025-04-28T09:17:08+00:00 Andrey Vatoropin a.vatoropin@crpt.ru 2025-03-03T09:13:56+00:00 4665a0da497b1bd42569e5bc6da4cd9ce82f9c25 Static analysis shows that pointer "mi" cannot be NULL, since it is pre-initialized above. A potential failure when mi equals NULL is processed. Remove the extra NULL check. It is meaningless and harms the readability of the code, since before that the pointer is unconditionally dereferenced. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
Static analysis shows that pointer "mi" cannot be NULL, since it is
pre-initialized above. A potential failure when mi equals NULL is
processed.

Remove the extra NULL check. It is meaningless and harms the readability
of the code, since before that the pointer is unconditionally
dereferenced.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Andrey Vatoropin <a.vatoropin@crpt.ru>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Merge tag 'ntfs3_for_6.15' of https://github.com/Paragon-Software-Group/linux-ntfs3 2025-04-02T23:30:02+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-04-02T23:30:02+00:00 0cc5543fad527878b311dcc361ec505f613da4e2 Pull ntfs3 updates from Konstantin Komarov: - Fix integer overflows on 32-bit systems and in hdr_first_de() - Fix 'proc_info_root' leak on NTFS initialization failure - Remove unused functions ni_load_attr, ntfs_sb_read, ntfs_flush_inodes - update inode->i_mapping->a_ops on compression state - ensure atomicity of write operations - refactor ntfs_{create/remove}_{procdir,proc_root}() * tag 'ntfs3_for_6.15' of https://github.com/Paragon-Software-Group/linux-ntfs3: fs/ntfs3: Remove unused ntfs_flush_inodes fs/ntfs3: Remove unused ntfs_sb_read fs/ntfs3: Remove unused ni_load_attr fs/ntfs3: Prevent integer overflow in hdr_first_de() fs/ntfs3: Fix a couple integer overflows on 32bit systems fs/ntfs3: Update inode->i_mapping->a_ops on compression state fs/ntfs3: Fix WARNING in ntfs_extend_initialized_size fs/ntfs3: Fix 'proc_info_root' leak when init ntfs failed fs/ntfs3: Factor out ntfs_{create/remove}_proc_root() fs/ntfs3: Factor out ntfs_{create/remove}_procdir() fs/ntfs3: Keep write operations atomic 
Pull ntfs3 updates from Konstantin Komarov:

 - Fix integer overflows on 32-bit systems and in hdr_first_de()

 - Fix 'proc_info_root' leak on NTFS initialization failure

 - Remove unused functions ni_load_attr, ntfs_sb_read, ntfs_flush_inodes

 - update inode->i_mapping->a_ops on compression state

 - ensure atomicity of write operations

 - refactor ntfs_{create/remove}_{procdir,proc_root}()

* tag 'ntfs3_for_6.15' of https://github.com/Paragon-Software-Group/linux-ntfs3:
  fs/ntfs3: Remove unused ntfs_flush_inodes
  fs/ntfs3: Remove unused ntfs_sb_read
  fs/ntfs3: Remove unused ni_load_attr
  fs/ntfs3: Prevent integer overflow in hdr_first_de()
  fs/ntfs3: Fix a couple integer overflows on 32bit systems
  fs/ntfs3: Update inode->i_mapping->a_ops on compression state
  fs/ntfs3: Fix WARNING in ntfs_extend_initialized_size
  fs/ntfs3: Fix 'proc_info_root' leak when init ntfs failed
  fs/ntfs3: Factor out ntfs_{create/remove}_proc_root()
  fs/ntfs3: Factor out ntfs_{create/remove}_procdir()
  fs/ntfs3: Keep write operations atomic
fs/ntfs3: Remove unused ntfs_flush_inodes 2025-03-06T16:53:28+00:00 Dr. David Alan Gilbert linux@treblig.org 2025-02-19T01:45:56+00:00 8b12017c1b9582db8c5833cf08d610e8f810f4b3 ntfs_flush_inodes() was added in 2021 by commit 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") but has remained unused. Remove it, and it's helper function. Note: There is a commented out call to ntfs_flush_inodes in ntfs_truncate() - I've left that in place. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
ntfs_flush_inodes() was added in 2021 by
commit 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
but has remained unused.

Remove it, and it's helper function.

Note: There is a commented out call to ntfs_flush_inodes in
ntfs_truncate() - I've left that in place.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
fs/ntfs3: Remove unused ntfs_sb_read 2025-03-06T16:53:27+00:00 Dr. David Alan Gilbert linux@treblig.org 2025-02-19T01:45:55+00:00 1404580279f2386aac8246e1a366848589b26f9f ntfs_sb_read() was added in 2021 by commit 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") but hasn't been used. Remove it. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> 
ntfs_sb_read() was added in 2021 by
commit 82cae269cfa9 ("fs/ntfs3: Add initialization of super block")
but hasn't been used.

Remove it.

Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>