Changes in compress.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/compress.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/compress.c

495e90fa334828d4119061e2726af51d0a0fb4ed - ntfs: update attrib operations

Fri, 13 Feb 2026 02:43:34 +0100

ntfs: update attrib operationsOverhaul the attribute operations to support write access, includingfull attribute list management for handling multiple MFT records, andcompressed writes.Acked-by: Christoph Hellwig Signed-off-by: Hyunchul Lee Signed-off-by: Namjae Jeon List of files: /linux/fs/ntfs/compress.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/compress.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/compress.c

34069d12e239ae8f36dd96c378e4622fb1c42a76 - Merge tag 'v6.5' into next

Tue, 05 Sep 2023 23:08:14 +0200

Merge tag 'v6.5' into nextSync up with mainline to bring in updates to the shared infrastructure. List of files: /linux/fs/ntfs/compress.c

2612e3bbc0386368a850140a6c9b990cd496a5ec - Merge drm/drm-next into drm-intel-next

Mon, 07 Aug 2023 23:14:42 +0200

Merge drm/drm-next into drm-intel-nextCatching-up with drm-next and drm-intel-gt-next.It will unblock a code refactor around the platformdefinitions (names vs acronyms).Signed-off-by: Rodrigo Vivi List of files: /linux/fs/ntfs/compress.c

9f771739a04919226081a107167596de75108fbb - Merge drm/drm-next into drm-intel-gt-next

Mon, 07 Aug 2023 12:29:40 +0200

Merge drm/drm-next into drm-intel-gt-nextNeed to pull in b3e4aae612ec ("drm/i915/hdcp: Modify hdcp_gsc_message msg sending mechanism") asa dependency for https://patchwork.freedesktop.org/series/121735/Signed-off-by: Joonas Lahtinen List of files: /linux/fs/ntfs/compress.c

61b7369483efb5e0a9f3b48e75fac00d46d661e0 - Merge drm/drm-next into drm-misc-next

Mon, 24 Jul 2023 15:44:47 +0200

Merge drm/drm-next into drm-misc-nextBackmerging to get v6.5-rc2.Signed-off-by: Thomas Zimmermann List of files: /linux/fs/ntfs/compress.c

0791faebfe750292a8a842b64795a390ca4a3b51 - ASoC: Merge v6.5-rc2

Mon, 17 Jul 2023 07:12:31 +0200

ASoC: Merge v6.5-rc2Get a similar baseline to my other branches, and fixes for people usingthe branch. List of files: /linux/fs/ntfs/compress.c

2f98e686ef59b5d19af5847d755798e2031bee3a - Merge v6.5-rc1 into drm-misc-fixes

Tue, 11 Jul 2023 09:23:20 +0200

Merge v6.5-rc1 into drm-misc-fixesBoris needs 6.5-rc1 in drm-misc-fixes to prevent a conflict.Signed-off-by: Maxime Ripard List of files: /linux/fs/ntfs/compress.c

44f10dbefd5e41b3385af91f855a57aa2afaf40e - Merge branch 'master' into mm-hotfixes-stable

Fri, 30 Jun 2023 17:41:39 +0200

Merge branch 'master' into mm-hotfixes-stable List of files: /linux/fs/ntfs/compress.c

5c1c88cddb79d3ed3fb1d02a3eaf529eded76f05 - Merge tag 'v6.5/fs.ntfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

Mon, 26 Jun 2023 18:47:39 +0200

Merge tag 'v6.5/fs.ntfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfsPull ntfs updates from Christian Brauner: "A pile of various smaller fixes for ntfs"* tag 'v6.5/fs.ntfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: ntfs: do not dereference a null ctx on error ntfs: Remove unneeded semicolon ntfs: Correct spelling ntfs: remove redundant initialization to pointer cb_sb_start List of files: /linux/fs/ntfs/compress.c

04faa6cfd44972c2e36b6528a4719e3880db0c90 - ntfs: remove redundant initialization to pointer cb_sb_start

Tue, 18 Apr 2023 17:36:07 +0200

ntfs: remove redundant initialization to pointer cb_sb_startThe pointer cb_sb_start is being initialized with a value that is neverread, it is being re-assigned the same value later on when it is firstbeing used. The initialization is redundant and can be removed.Cleans up clang scan build warning:fs/ntfs/compress.c:164:6: warning: Value stored to 'cb_sb_start' during its initialization is never read [deadcode.DeadStores] u8 *cb_sb_start = cb; /* Beginning of the current sb in the cb. */Signed-off-by: Colin Ian King Reviewed-by: Namjae Jeon Message-Id: <20230418153607.3125704-1-colin.i.king@gmail.com>Signed-off-by: Christian Brauner List of files: /linux/fs/ntfs/compress.c

9a87ffc99ec8eb8d35eed7c4f816d75f5cc9662e - Merge branch 'next' into for-linus

Tue, 02 May 2023 00:20:08 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.4 merge window. List of files: /linux/fs/ntfs/compress.c

cdc780f044a803aff8845b949f800f0f3d095d5f - Merge branch 'for-6.4/amd-sfh' into for-linus

Wed, 26 Apr 2023 22:52:34 +0200

Merge branch 'for-6.4/amd-sfh' into for-linus- assorted functional fixes for amd-sfh driver (Basavaraj Natikar) List of files: /linux/fs/ntfs/compress.c

ea68a3e9d14e9e0bf017d178fb4bd53b6deb1482 - Merge drm/drm-next into drm-intel-gt-next

Tue, 11 Apr 2023 14:43:45 +0200

Merge drm/drm-next into drm-intel-gt-nextNeed to pull in commit from drm-next (earlier in drm-intel-next):1eca0778f4b3 ("drm/i915: add struct i915_dsm to wrap dsm members together")In order to merge following patch to drm-intel-gt-next:https://patchwork.freedesktop.org/patch/530942/?series=114925&rev=6Signed-off-by: Joonas Lahtinen List of files: /linux/fs/ntfs/compress.c

cecdd52a3dd312564f81a39df08378b7b39a2654 - Merge drm/drm-next into drm-intel-next

Tue, 28 Mar 2023 16:30:57 +0200

Merge drm/drm-next into drm-intel-nextCatch up with 6.3-rc cycle...Signed-off-by: Rodrigo Vivi List of files: /linux/fs/ntfs/compress.c

e752ab11dcb48353727ea26eefd740155e028865 - Merge remote-tracking branch 'drm/drm-next' into msm-next

Mon, 20 Mar 2023 18:31:25 +0100

Merge remote-tracking branch 'drm/drm-next' into msm-nextMerge drm-next into msm-next to pick up external clk and PM dependenciesfor improved a6xx GPU reset sequence.Signed-off-by: Rob Clark List of files: /linux/fs/ntfs/compress.c

d26a3a6ce7e02f9c056ad992bcd9624735022337 - Merge tag 'v6.3-rc2' into next

Fri, 17 Mar 2023 12:01:30 +0100

Merge tag 'v6.3-rc2' into nextMerge with mainline to get of_property_present() and other newer APIs. List of files: /linux/fs/ntfs/compress.c