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2022-08-03fs/ntfs3: Make MFT zone less fragmentedKonstantin Komarov
Now we take free space after the MFT zone if the MFT zone shrinks. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Check possible errors in run_pack in advanceKonstantin Komarov
Checking in advance speeds things up in some cases. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Added comments to frecord functionsKonstantin Komarov
Added some comments in frecord.c for more context. Also changed run_lookup to static because it's an internal function. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Fill duplicate info in ni_add_nameKonstantin Komarov
Work with names must be completed in ni_add_name Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Make static function attr_load_runsKonstantin Komarov
attr_load_runs is an internal function Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Add new argument is_mft to ntfs_mark_rec_freeKonstantin Komarov
This argument helps in avoiding double locking Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Remove unused mi_mark_freeKonstantin Komarov
Cleaning up dead code Fix wrong comments Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Fix very fragmented case in attr_punch_holeKonstantin Komarov
In some cases we need to ni_find_attr attr_b Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Fix work with fragmented xattrKonstantin Komarov
In some cases xattr is too fragmented, so we need to load it before writing. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Make ntfs_fallocate return -ENOSPC instead of -EFBIGKonstantin Komarov
In some cases we need to return ENOSPC Fixes xfstest generic/213 Fixes: 114346978cf6 ("fs/ntfs3: Check new size for limits") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: extend ni_insert_nonresident to return inserted ATTR_LIST_ENTRYKonstantin Komarov
Fixes xfstest generic/300 Fixes: 4534a70b7056 ("fs/ntfs3: Add headers and misc files") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Check reserved size for maximum allowedKonstantin Komarov
Also don't mask EFBIG Fixes xfstest generic/485 Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-03fs/ntfs3: Do not change mode if ntfs_set_ea failedKonstantin Komarov
ntfs_set_ea can fail with NOSPC, so we don't need to change mode in this situation. Fixes xfstest generic/449 Fixes: be71b5cba2e6 ("fs/ntfs3: Add attrib operations") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-08-02ntfs3: refactor ntfs_writepagesChristoph Hellwig
Handle the resident case with an explicit generic_writepages call instead of using the obscure overload that makes mpage_writepages with a NULL get_block do the same thing. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-07-14fs/ntfs3: Use enum req_op where appropriateBart Van Assche
Improve static type checking by using enum req_op instead of u32 for block layer request operations. Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20220714180729.1065367-60-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-14fs/buffer: Combine two submit_bh() and ll_rw_block() argumentsBart Van Assche
Both submit_bh() and ll_rw_block() accept a request operation type and request flags as their first two arguments. Micro-optimize these two functions by combining these first two arguments into a single argument. This patch does not change the behavior of any of the modified code. Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Jan Kara <jack@suse.cz> Acked-by: Song Liu <song@kernel.org> (for the md changes) Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20220714180729.1065367-48-bvanassche@acm.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-07-06fs/ntfs3: Remove unnecessary 'NULL' values from pointersLi kunyu
There is no need to initialize with NULL as it'll be rewritten later. Signed-off-by: Li kunyu <kunyu@nfschina.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-07-05fs/ntfs3: Remove duplicated assignment to variable rColin Ian King
The assignment to variable r is duplicated, the second assignment is redundant and can be removed. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-07-05fs/ntfs3: Unlock on error in attr_insert_range()Dan Carpenter
This error path needs to call up_write(&ni->file.run_lock) and do some other clean up before returning. Fixes: aa30eccb24e5 ("fs/ntfs3: Fallocate (FALLOC_FL_INSERT_RANGE) implementation") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-07-05fs/ntfs3: Make ntfs_update_mftmirr return voidPavel Skripkin
None of callers check the return value of ntfs_update_mftmirr(), so make it return void to make code simpler. Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-07-05fs/ntfs3: Fix NULL deref in ntfs_update_mftmirrPavel Skripkin
If ntfs_fill_super() wasn't called then sbi->sb will be equal to NULL. Code should check this ptr before dereferencing. Syzbot hit this issue via passing wrong mount param as can be seen from log below Fail log: ntfs3: Unknown parameter 'iochvrset' general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb253435746d9 #0 ... Call Trace: <TASK> put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363 put_fs_context+0x119/0x7a0 fs/fs_context.c:469 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") Reported-and-tested-by: syzbot+c95173762127ad76a824@syzkaller.appspotmail.com Signed-off-by: Pavel Skripkin <paskripkin@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-29ntfs3: Remove check for PageErrorMatthew Wilcox (Oracle)
If read_mapping_page() encounters an error, it returns an errno, not a page with PageError set, so this is dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-06-28fs/ntfs3: Enable FALLOC_FL_INSERT_RANGEKonstantin Komarov
Changed logic in ntfs_fallocate - more clear checks in beginning instead of the middle of function and added FALLOC_FL_INSERT_RANGE. Fixes xfstest generic/064 Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-28fs/ntfs3: Fallocate (FALLOC_FL_INSERT_RANGE) implementationKonstantin Komarov
Add functions for inserting hole in file and inserting range in run. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-17fs/ntfs3: Add missing error checkKonstantin Komarov
We must check return value of log_read_rst Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-10fs/ntfs3: Don't clear upper bits accidentally in log_replay()Dan Carpenter
The "vcn" variable is a 64 bit. The "log->clst_per_page" variable is a u32. This means that the mask accidentally clears out the high 32 bits when it was only supposed to clear some low bits. Fix this by adding a cast to u64. Fixes: b46acd6a6a62 ("fs/ntfs3: Add NTFS journal") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-09fs/ntfs3: Use the same order for acl pointer check in ntfs_init_aclYang Xu
For the readability and unity of the code, adjust the order Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com> Reviewed-by: Kari Argillander <kari.argillander@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-09fs/ntfs3: Fix using uninitialized value n when calling indx_readYan Lei
This value is checked in indx_read, so it must be initialized Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") Signed-off-by: Yan Lei <chinayanlei2002@163.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-08fs/ntfs3: Remove redundant assignment to variable vcnColin Ian King
Variable vcn is being assigned a value that is never read, it is being re-assigned again in the initialization of a for-loop. The assignment is redundant and can be removed. Cleans up clang scan build warning: fs/ntfs3/attrib.c:1176:7: warning: Value stored to 'vcn' during its initialization is never read [deadcode.DeadStores] Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Reviewed-by: Kari Argillander <kari.argillander@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-07fs/ntfs3: Remove redundant assignment to variable frameColin Ian King
Variable frame is assigned a value that is never read. The assignment is redundant and can be removed. Cleans up the clang-scan build warning: fs/ntfs3/file.c:995:3: warning: Value stored to 'frame' is never read [deadcode.DeadStores] frame = pos >> frame_bits; Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-07fs/ntfs3: Remove a useless testChristophe JAILLET
'new_free' has just been allocated by kmalloc() and is known to be not NULL. So this pointer can't be equal to a previous memory allocation. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-06fs/ntfs3: Fix missing i_op in ntfs_read_mftKonstantin Komarov
There is null pointer dereference because i_op == NULL. The bug happens because we don't initialize i_op for records in $Extend. Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") Reported-by: Liangbin Lian <jjm2473@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-06fs/ntfs3: Refactor ni_try_remove_attr_list functionKonstantin Komarov
Now we save a copy of primary record for restoration. Also now we remove all attributes from subrecords. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-06fs/ntfs3: Fix double free on remountKonstantin Komarov
Pointer to options was freed twice on remount Fixes xfstest generic/361 Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-06fs/ntfs3: Refactoring of indx_find functionKonstantin Komarov
This commit makes function a bit more readable Cc: Joe Perches <joe@perches.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-06-03Merge tag 'ntfs3_for_5.19' of ↵Linus Torvalds
https://github.com/Paragon-Software-Group/linux-ntfs3 Pull ntfs3 updates from Konstantin Komarov: - fix some memory leaks and panic - fixed xfstests (tested on x86_64): generic/092 generic/099 generic/228 generic/240 generic/307 generic/444 - fix some typos, dead code, etc * tag 'ntfs3_for_5.19' of https://github.com/Paragon-Software-Group/linux-ntfs3: fs/ntfs3: provide block_invalidate_folio to fix memory leak fs/ntfs3: Fix invalid free in log_replay fs/ntfs3: Update valid size if -EIOCBQUEUED fs/ntfs3: Check new size for limits fs/ntfs3: Fix fiemap + fix shrink file size (to remove preallocated space) fs/ntfs3: In function ntfs_set_acl_ex do not change inode->i_mode if called from function ntfs_init_acl fs/ntfs3: Optimize locking in ntfs_save_wsl_perm fs/ntfs3: Update i_ctime when xattr is added fs/ntfs3: Restore ntfs_xattr_get_acl and ntfs_xattr_set_acl functions fs/ntfs3: Keep preallocated only if option prealloc enabled fs/ntfs3: Fix some memory leaks in an error handling path of 'log_replay()'
2022-06-01fs/ntfs3: provide block_invalidate_folio to fix memory leakMikulas Patocka
The ntfs3 filesystem lacks the 'invalidate_folio' method and it causes memory leak. If you write to the filesystem and then unmount it, the cached written data are not freed and they are permanently leaked. Fixes: 7ba13abbd31e ("fs: Turn block_invalidatepage into block_invalidate_folio") Reported-by: José Luis Lara Carrascal <manualinux@yahoo.es> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Cc: stable@vger.kernel.org # v5.18
2022-05-31fs/ntfs3: Fix invalid free in log_replayNamjae Jeon
log_read_rst() returns ENOMEM error when there is not enough memory. In this case, if info is returned without initialization, it attempts to kfree the uninitialized info->r_page pointer. This patch moves the memset initialization code to before log_read_rst() is called. Reported-by: Gerald Lee <sundaywind2004@gmail.com> Signed-off-by: Namjae Jeon <linkinjeon@kernel.org> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
2022-05-31Merge tag 'v5.18'Konstantin Komarov
Linux 5.18
2022-05-27Merge tag 'mm-nonmm-stable-2022-05-26' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc updates from Andrew Morton: "The non-MM patch queue for this merge window. Not a lot of material this cycle. Many singleton patches against various subsystems. Most notably some maintenance work in ocfs2 and initramfs" * tag 'mm-nonmm-stable-2022-05-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (65 commits) kcov: update pos before writing pc in trace function ocfs2: dlmfs: fix error handling of user_dlm_destroy_lock ocfs2: dlmfs: don't clear USER_LOCK_ATTACHED when destroying lock fs/ntfs: remove redundant variable idx fat: remove time truncations in vfat_create/vfat_mkdir fat: report creation time in statx fat: ignore ctime updates, and keep ctime identical to mtime in memory fat: split fat_truncate_time() into separate functions MAINTAINERS: add Muchun as a memcg reviewer proc/sysctl: make protected_* world readable ia64: mca: drop redundant spinlock initialization tty: fix deadlock caused by calling printk() under tty_port->lock relay: remove redundant assignment to pointer buf fs/ntfs3: validate BOOT sectors_per_clusters lib/string_helpers: fix not adding strarray to device's resource list kernel/crash_core.c: remove redundant check of ck_cmdline ELF, uapi: fixup ELF_ST_TYPE definition ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() ipc: update semtimedop() to use hrtimer ipc/sem: remove redundant assignments ...
2022-05-24Merge tag 'folio-5.19' of git://git.infradead.org/users/willy/pagecacheLinus Torvalds
Pull page cache updates from Matthew Wilcox: - Appoint myself page cache maintainer - Fix how scsicam uses the page cache - Use the memalloc_nofs_save() API to replace AOP_FLAG_NOFS - Remove the AOP flags entirely - Remove pagecache_write_begin() and pagecache_write_end() - Documentation updates - Convert several address_space operations to use folios: - is_dirty_writeback - readpage becomes read_folio - releasepage becomes release_folio - freepage becomes free_folio - Change filler_t to require a struct file pointer be the first argument like ->read_folio * tag 'folio-5.19' of git://git.infradead.org/users/willy/pagecache: (107 commits) nilfs2: Fix some kernel-doc comments Appoint myself page cache maintainer fs: Remove aops->freepage secretmem: Convert to free_folio nfs: Convert to free_folio orangefs: Convert to free_folio fs: Add free_folio address space operation fs: Convert drop_buffers() to use a folio fs: Change try_to_free_buffers() to take a folio jbd2: Convert release_buffer_page() to use a folio jbd2: Convert jbd2_journal_try_to_free_buffers to take a folio reiserfs: Convert release_buffer_page() to use a folio fs: Remove last vestiges of releasepage ubifs: Convert to release_folio reiserfs: Convert to release_folio orangefs: Convert to release_folio ocfs2: Convert to release_folio nilfs2: Remove comment about releasepage nfs: Convert to release_folio jfs: Convert to release_folio ...
2022-05-12fs/ntfs3: validate BOOT sectors_per_clustersRandy Dunlap
When the NTFS BOOT sectors_per_clusters field is > 0x80, it represents a shift value. Make sure that the shift value is not too large before using it (NTFS max cluster size is 2MB). Return -EVINVAL if it too large. This prevents negative shift values and shift values that are larger than the field size. Prevents this UBSAN error: UBSAN: shift-out-of-bounds in ../fs/ntfs3/super.c:673:16 shift exponent -192 is negative Link: https://lkml.kernel.org/r/20220502175342.20296-1-rdunlap@infradead.org Fixes: 82cae269cfa9 ("fs/ntfs3: Add initialization of super block") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: syzbot+1631f09646bc214d2e76@syzkaller.appspotmail.com Reviewed-by: Namjae Jeon <linkinjeon@kernel.org> Cc: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Kari Argillander <kari.argillander@stargateuniverse.net> Cc: Namjae Jeon <linkinjeon@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2022-05-09fs: Convert mpage_readpage to mpage_read_folioMatthew Wilcox (Oracle)
mpage_readpage still works in terms of pages, and has not been audited for correctness with large folios, so include an assertion that the filesystem is not passing it large folios. Convert all the filesystems to call mpage_read_folio() instead of mpage_readpage(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-05-08ntfs3: Remove fsdata parameter from ntfs_extend_initialized_size()Matthew Wilcox (Oracle)
After the last patch, Smatch reports: fs/ntfs3/file.c:168 ntfs_extend_initialized_size() error: uninitialized symbol 'fsdata'. fsdata is indeed unused. This is not new, but Smatch couldn't see it before because calls through pagecache_write_begin()/pagecache_write_end() could theoretically call any implemention of ->write_begin/write_end, some of which do use fsdata. Now that the calls are direct, Smatch can see they're never used. Fix this by simply passing NULL. While ntfs3 does pass this parameter on to generic functions, those generic functions also never dereference the fsdata parameter, so it's unnecessary to pass the address of a real pointer. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
2022-05-08ntfs3: Call ntfs_write_begin() and ntfs_write_end() directlyMatthew Wilcox (Oracle)
There is only one kind of write_begin/write_end aops, so we don't need to look up which aop it is, just make ntfs_write_begin() and ntfs_write_end() available to this file and call them directly. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Namjae Jeon <linkinjeon@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2022-05-08fs: Remove flags parameter from aops->write_beginMatthew Wilcox (Oracle)
There are no more aop flags left, so remove the parameter. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2022-05-08fs: Remove aop flags parameter from grab_cache_page_write_begin()Matthew Wilcox (Oracle)
There are no more aop flags left, so remove the parameter. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2022-05-08fs: Remove aop flags parameter from block_write_begin()Matthew Wilcox (Oracle)
There are no more aop flags left, so remove the parameter. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
2022-04-17block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARDChristoph Hellwig
Secure erase is a very different operation from discard in that it is a data integrity operation vs hint. Fully split the limits and helper infrastructure to make the separation more clear. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd] Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> [nifs2] Acked-by: Jaegeuk Kim <jaegeuk@kernel.org> [f2fs] Acked-by: Coly Li <colyli@suse.de> [bcache] Acked-by: David Sterba <dsterba@suse.com> [btrfs] Acked-by: Chao Yu <chao@kernel.org> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-27-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2022-04-17block: add a bdev_discard_granularity helperChristoph Hellwig
Abstract away implementation details from file systems by providing a block_device based helper to retrieve the discard granularity. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Acked-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com> [drbd] Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Acked-by: David Sterba <dsterba@suse.com> [btrfs] Link: https://lore.kernel.org/r/20220415045258.199825-26-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
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