Changes in mft.c

ff9726d7a0068e6c2ae1969415285d12ef4d5c6f - Merge tag 'ntfs-for-7.1-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs

Fri, 24 Apr 2026 22:40:25 +0200

Merge tag 'ntfs-for-7.1-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfsPull ntfs updates from Namjae Jeon: - Fix potential data leakage by zeroing the portion of the straddle block beyond initialized_size when reading non-resident attributes - Remove unnecessary zeroing in ntfs_punch_hole() for ranges beyond initialized_size, as they are already returned as zeros on read - Fix writable check in ntfs_file_mmap_prepare() to correctly handle shared mappings using VMA_SHARED_BIT | VMA_MAYWRITE_BIT - Use page allocation instead of kmemdup() for IOMAP_INLINE data to ensure page-aligned address and avoid BUG trap in iomap_inline_data_valid() caused by the page boundary check - Add a size check before memory allocation in ntfs_attr_readall() and reject overly large attributes - Remove unneeded noop_direct_IO from ntfs_aops as it is no longer required following the FMODE_CAN_ODIRECT flag - Fix seven static analysis warnings reported by Smatch* tag 'ntfs-for-7.1-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs: ntfs: use page allocation for resident attribute inline data ntfs: fix mmap_prepare writable check for shared mappings ntfs: fix potential 32-bit truncation in ntfs_write_cb() ntfs: fix uninitialized variable in ntfs_map_runlist_nolock ntfs: delete dead code ntfs: add missing error code in ntfs_mft_record_alloc() ntfs: fix uninitialized variables in ntfs_ea_set_wsl_inode() ntfs: fix uninitialized pointer in ntfs_write_mft_block ntfs: fix uninitialized variable in ntfs_write_simple_iomap_begin_non_resident ntfs: remove noop_direct_IO from address_space_operations ntfs: limit memory allocation in ntfs_attr_readall ntfs: not zero out range beyond init in punch_hole ntfs: zero out stale data in straddle block beyond initialized_size List of files: /linux/fs/ntfs/mft.c

e8b79d09e3121390ebd04591ac1d8c4dea811815 - ntfs: add missing error code in ntfs_mft_record_alloc()

Fri, 10 Apr 2026 08:47:25 +0200

ntfs: add missing error code in ntfs_mft_record_alloc()Return -ENOMEM if the kmalloc() fails. Don't return success.Signed-off-by: Dan Carpenter Reviewed-by: Hyunchul Lee Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

545834ac412fb42d41a41442aee7998c1d2dcced - ntfs: fix uninitialized pointer in ntfs_write_mft_block

Fri, 10 Apr 2026 16:49:01 +0200

ntfs: fix uninitialized pointer in ntfs_write_mft_blockSmatch reported that the variable rl could be used uninitialized inntfs_write_mft_block(). After analyzing the code,when vol->cluster_size == NTFS_BLOCK_SIZE (512), it is smaller thanfolio_size, so rl is guaranteed to be initialized. If vol->cluster_sizeis larger, the condition to access rl becomes false, so a runtime error isnot expected to occur. However, to make the static checker happy,this patch initializes rl to NULL and adds an explicit check beforeits usage.Reported-by: Dan Carpenter Reviewed-by: Hyunchul Lee Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

cdd4dc3aebeab43a72ce0bc2b5bab6f0a80b97a5 - Merge tag 'ntfs-for-7.1-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfs

Sat, 18 Apr 2026 01:35:49 +0200

Merge tag 'ntfs-for-7.1-rc1-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/ntfsPull 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 ... List of files: /linux/fs/ntfs/mft.c

068a35fd7293c20ba35cc3f19ce981c038cc9328 - ntfs: fix inconsistent indenting warnings

Fri, 13 Mar 2026 01:25:21 +0100

ntfs: fix inconsistent indenting warningsDetected by Smatch.ndex.c:2041 ntfs_index_walk_up() warn: inconsistent indentingmft.c:2462 ntfs_mft_record_alloc() warn: inconsistent indentingSigned-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

e7d82353986c7267fbd03d7385829cc763807b55 - ntfs: use ->mft_no instead of ->i_ino in prints

Thu, 05 Mar 2026 02:46:42 +0100

ntfs: use ->mft_no instead of ->i_ino in printsThis improves log accuracy for NTFS debugging and removes unnecessaryreliance on the VFS i_ino field ahead of the core VFS type change.Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

d9038d99fb5c623f43bcd8b726bfbbe8562648c2 - ntfs: change mft_no type to u64

Thu, 05 Mar 2026 02:40:54 +0100

ntfs: change mft_no type to u64Changes the type of ntfs_inode::mft_no from unsigned long to u64to safely handle the full 48-bit range without truncation risk, especiallyin preparation for broader VFS inode number type (i_ino:u64) and toimprove consistency with ntfs driver practices.Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

f462fdf3d6a405ada5cf51241d56a47ead152968 - ntfs: reduce stack usage in ntfs_write_mft_block()

Wed, 04 Mar 2026 09:38:32 +0100

ntfs: reduce stack usage in ntfs_write_mft_block()The use of two large arrays in this function makes the stack frame exceedthe warning limit in some configurations, especially with KASAN enabled.When CONFIG_PAGE_SIZE is set to 65536, each of the arrays contains 128pointers, 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 dangerouslyhigh stack usage.Unfortunately, allocating memory in the writepages() code path can beproblematic in case of low memory situations, so it would be better torework the code more widely to avoid the allocation entirely.Fixes: 115380f9a2f9 ("ntfs: update mft operations")Signed-off-by: Arnd Bergmann Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

e6eb3a0584628f84e6f3fcf258fba8fd11f42d2e - ntfs: Fix spelling mistake "initiailized" -> "initialized"

Sat, 28 Feb 2026 00:18:54 +0100

ntfs: Fix spelling mistake "initiailized" -> "initialized"There is a spelling mistake in an ntfs_debug message. Fix it.Signed-off-by: Colin Ian King Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

115380f9a2f9675c7924563cbba70d40cae8fb81 - ntfs: update mft operations

Fri, 13 Feb 2026 02:39:43 +0100

ntfs: update mft operationsRefactors MFT record handling to use folio APIs with consistencyvalidation, and improving allocation extension and writeback pathsfor and .Acked-by: Christoph Hellwig Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

1e9ea7e04472d4e5e12e58c881eaacfb3e49b669 - Revert "fs: Remove NTFS classic"

Tue, 30 Dec 2025 06:24:16 +0100

Revert "fs: Remove NTFS classic"This reverts commit 7ffa8f3d30236e0ab897c30bdb01224ff1fe1c89.Reverts the removal of the classic read-only ntfs driver toserve as the base for a new read-write ntfs implementation.If we stack changes on top of the revert patch, It will significantlyreduce the diff size, making the review easier.This revert intentionally excludes the restoration of Kconfig andMakefile. The Kconfig and Makefile will be added back in the final patchof this series, enabling the driver only after all features andimprovements have been applied.Acked-by: Christoph Hellwig Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/mft.c

ab1c247094e323177a578b38f0325bf79f0317ac - Merge remote-tracking branch 'torvalds/master' into perf-tools-next

Tue, 19 Dec 2023 01:37:07 +0100

Merge remote-tracking branch 'torvalds/master' into perf-tools-nextTo pick up fixes that went thru perf-tools for v6.7 and to get in syncwith upstream to check for drift in the copies of headers, etc.Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/fs/ntfs/mft.c

3bf3e21c15d4386a5f15118ec39bbc1b67ea5759 - Merge drm/drm-next into drm-misc-next

Wed, 15 Nov 2023 10:45:19 +0100

Merge drm/drm-next into drm-misc-nextLet's kickstart the v6.8 release cycle.Signed-off-by: Maxime Ripard List of files: /linux/fs/ntfs/mft.c

a1c613ae4c322ddd58d5a8539dbfba2a0380a8c0 - Merge drm/drm-next into drm-intel-gt-next

Tue, 24 Oct 2023 10:50:22 +0200

Merge drm/drm-next into drm-intel-gt-nextWork that needs to land in drm-intel-gt-next depends on two patches onlypresent in drm-intel-next, absence of which is causing a merge conflict: 3b918f4f0c8b ("drm/i915/pxp: Optimize GET_PARAM:PXP_STATUS") ac765b7018f6 ("drm/i915/pxp/mtl: intel_pxp_init_hw needs runtime-pm inside pm-complete")Signed-off-by: Tvrtko Ursulin List of files: /linux/fs/ntfs/mft.c

5d2d4a9f603a47403395408f64b1261ca61f6d50 - Merge branch 'tip/perf/urgent'

Wed, 15 Nov 2023 10:15:40 +0100

Merge branch 'tip/perf/urgent'Avoid conflicts, base on fixes.Signed-off-by: Peter Zijlstra List of files: /linux/fs/ntfs/mft.c

cdd5b5a9761fd66d17586e4f4ba6588c70e640ea - Merge branch 'next' into for-linus

Tue, 07 Nov 2023 00:42:08 +0100

Merge branch 'next' into for-linusPrepare input updates for 6.7 merge window. List of files: /linux/fs/ntfs/mft.c

14ab6d425e80674b6a0145f05719b11e82e64824 - Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs

Mon, 30 Oct 2023 20:47:13 +0100

Merge tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfsPull vfs inode time accessor updates from Christian Brauner: "This finishes the conversion of all inode time fields to accessor functions as discussed on list. Changing timestamps manually as we used to do before is error prone. Using accessors function makes this robust. It does not contain the switch of the time fields to discrete 64 bit integers to replace struct timespec and free up space in struct inode. But after this, the switch can be trivially made and the patch should only affect the vfs if we decide to do it"* tag 'vfs-6.7.ctime' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (86 commits) fs: rename inode i_atime and i_mtime fields security: convert to new timestamp accessors selinux: convert to new timestamp accessors apparmor: convert to new timestamp accessors sunrpc: convert to new timestamp accessors mm: convert to new timestamp accessors bpf: convert to new timestamp accessors ipc: convert to new timestamp accessors linux: convert to new timestamp accessors zonefs: convert to new timestamp accessors xfs: convert to new timestamp accessors vboxsf: convert to new timestamp accessors ufs: convert to new timestamp accessors udf: convert to new timestamp accessors ubifs: convert to new timestamp accessors tracefs: convert to new timestamp accessors sysv: convert to new timestamp accessors squashfs: convert to new timestamp accessors server: convert to new timestamp accessors client: convert to new timestamp accessors ... List of files: /linux/fs/ntfs/mft.c

56c0d99b846adeded1ce8fabf782d86a8a0b6eb7 - ntfs: convert to new timestamp accessors

Wed, 04 Oct 2023 20:52:39 +0200

ntfs: convert to new timestamp accessorsConvert to using the new inode timestamp accessor functions.Signed-off-by: Jeff Layton Link: https://lore.kernel.org/r/20231004185347.80880-52-jlayton@kernel.orgSigned-off-by: Christian Brauner List of files: /linux/fs/ntfs/mft.c

a940daa52167e9db8ecce82213813b735a9d9f23 - Merge branch 'linus' into smp/core

Tue, 17 Oct 2023 21:40:46 +0200

Merge branch 'linus' into smp/corePull in upstream to get the fixes so depending changes can be applied. List of files: /linux/fs/ntfs/mft.c

57390019b68b83f96eb98f490367b9df1f2d77cb - Merge drm/drm-next into drm-misc-next

Wed, 11 Oct 2023 09:50:59 +0200

Merge drm/drm-next into drm-misc-nextUpdating drm-misc-next to the state of Linux v6.6-rc2.Signed-off-by: Thomas Zimmermann List of files: /linux/fs/ntfs/mft.c