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These definitions exist in disk-io.c, which is not related to the
locking. Move this over to locking.h/c where it makes more sense.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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In btrfs_relocate_block_group(), the rc is allocated. Then
btrfs_relocate_block_group() calls
relocate_block_group()
prepare_to_relocate()
set_reloc_control()
that assigns rc to the variable fs_info->reloc_ctl. When
prepare_to_relocate() returns, it calls
btrfs_commit_transaction()
btrfs_start_dirty_block_groups()
btrfs_alloc_path()
kmem_cache_zalloc()
which may fail for example (or other errors could happen). When the
failure occurs, btrfs_relocate_block_group() detects the error and frees
rc and doesn't set fs_info->reloc_ctl to NULL. After that, in
btrfs_init_reloc_root(), rc is retrieved from fs_info->reloc_ctl and
then used, which may cause a use-after-free bug.
This possible bug can be triggered by calling btrfs_ioctl_balance()
before calling btrfs_ioctl_defrag().
To fix this possible bug, in prepare_to_relocate(), check if
btrfs_commit_transaction() fails. If the failure occurs,
unset_reloc_control() is called to set fs_info->reloc_ctl to NULL.
The error log in our fault-injection testing is shown as follows:
[ 58.751070] BUG: KASAN: use-after-free in btrfs_init_reloc_root+0x7ca/0x920 [btrfs]
...
[ 58.753577] Call Trace:
...
[ 58.755800] kasan_report+0x45/0x60
[ 58.756066] btrfs_init_reloc_root+0x7ca/0x920 [btrfs]
[ 58.757304] record_root_in_trans+0x792/0xa10 [btrfs]
[ 58.757748] btrfs_record_root_in_trans+0x463/0x4f0 [btrfs]
[ 58.758231] start_transaction+0x896/0x2950 [btrfs]
[ 58.758661] btrfs_defrag_root+0x250/0xc00 [btrfs]
[ 58.759083] btrfs_ioctl_defrag+0x467/0xa00 [btrfs]
[ 58.759513] btrfs_ioctl+0x3c95/0x114e0 [btrfs]
...
[ 58.768510] Allocated by task 23683:
[ 58.768777] ____kasan_kmalloc+0xb5/0xf0
[ 58.769069] __kmalloc+0x227/0x3d0
[ 58.769325] alloc_reloc_control+0x10a/0x3d0 [btrfs]
[ 58.769755] btrfs_relocate_block_group+0x7aa/0x1e20 [btrfs]
[ 58.770228] btrfs_relocate_chunk+0xf1/0x760 [btrfs]
[ 58.770655] __btrfs_balance+0x1326/0x1f10 [btrfs]
[ 58.771071] btrfs_balance+0x3150/0x3d30 [btrfs]
[ 58.771472] btrfs_ioctl_balance+0xd84/0x1410 [btrfs]
[ 58.771902] btrfs_ioctl+0x4caa/0x114e0 [btrfs]
...
[ 58.773337] Freed by task 23683:
...
[ 58.774815] kfree+0xda/0x2b0
[ 58.775038] free_reloc_control+0x1d6/0x220 [btrfs]
[ 58.775465] btrfs_relocate_block_group+0x115c/0x1e20 [btrfs]
[ 58.775944] btrfs_relocate_chunk+0xf1/0x760 [btrfs]
[ 58.776369] __btrfs_balance+0x1326/0x1f10 [btrfs]
[ 58.776784] btrfs_balance+0x3150/0x3d30 [btrfs]
[ 58.777185] btrfs_ioctl_balance+0xd84/0x1410 [btrfs]
[ 58.777621] btrfs_ioctl+0x4caa/0x114e0 [btrfs]
...
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
CC: stable@vger.kernel.org # 5.15+
Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me>
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Zixuan Fu <r33s3n6@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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With the automatic block group reclaim code we will preemptively try to
mark the block group RO before we start the relocation. We do this to
make sure we should actually try to relocate the block group.
However if we hit an error during the actual relocation we won't clean
up our RO counter and the block group will remain RO. This was observed
internally with file systems reporting less space available from df when
we had failed background relocations.
Fix this by doing the dec_ro in the error case.
Fixes: 18bb8bbf13c1 ("btrfs: zoned: automatically reclaim zones")
CC: stable@vger.kernel.org # 5.15+
Reviewed-by: Boris Burkov <boris@bur.io>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Pull ksmbd server fixes from Steve French:
- important sparse file fix
- allocation size fix
- fix incorrect rc on bad share
- share config fix
* tag '5.20-rc2-ksmbd-smb3-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: don't remove dos attribute xattr on O_TRUNC open
ksmbd: remove unnecessary generic_fillattr in smb2_open
ksmbd: request update to stale share config
ksmbd: return STATUS_BAD_NETWORK_NAME error status if share is not configured
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When smb client open file in ksmbd share with O_TRUNC, dos attribute
xattr is removed as well as data in file. This cause the FSCTL_SET_SPARSE
request from the client fails because ksmbd can't update the dos attribute
after setting ATTR_SPARSE_FILE. And this patch fix xfstests generic/469
test also.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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Remove unnecessary generic_fillattr to fix wrong
AllocationSize of SMB2_CREATE response, And
Move the call of ksmbd_vfs_getattr above the place
where stat is needed because of truncate.
This patch fixes wrong AllocationSize of SMB2_CREATE
response. Because ext4 updates inode->i_blocks only
when disk space is allocated, generic_fillattr does
not set stat.blocks properly for delayed allocation.
But ext4 returns the blocks that include the delayed
allocation blocks when getattr is called.
The issue can be reproduced with commands below:
touch ${FILENAME}
xfs_io -c "pwrite -S 0xAB 0 40k" ${FILENAME}
xfs_io -c "stat" ${FILENAME}
40KB are written, but the count of blocks is 8.
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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ksmbd_share_config_get() retrieves the cached share config as long
as there is at least one connection to the share. This is an issue when
the user space utilities are used to update share configs. In that case
there is a need to inform ksmbd that it should not use the cached share
config for a new connection to the share. With these changes the tree
connection flag KSMBD_TREE_CONN_FLAG_UPDATE indicates this. When this
flag is set, ksmbd removes the share config from the shares hash table
meaning that ksmbd_share_config_get() ends up requesting a share config
from user space.
Signed-off-by: Atte Heikkilä <atteh.mailbox@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
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If share is not configured in smb.conf, smb2 tree connect should return
STATUS_BAD_NETWORK_NAME instead of STATUS_BAD_NETWORK_PATH.
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
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https://github.com/Paragon-Software-Group/linux-ntfs3
Pull ntfs3 updates from Konstantin Komarov:
- implement FALLOC_FL_INSERT_RANGE
- fix some logic errors
- fixed xfstests (tested on x86_64): generic/064 generic/213
generic/300 generic/361 generic/449 generic/485
- some dead code removed or refactored
* tag 'ntfs3_for_6.0' of https://github.com/Paragon-Software-Group/linux-ntfs3: (39 commits)
fs/ntfs3: uninitialized variable in ntfs_set_acl_ex()
fs/ntfs3: Remove unused function wnd_bits
fs/ntfs3: Make ni_ins_new_attr return error
fs/ntfs3: Create MFT zone only if length is large enough
fs/ntfs3: Refactoring attr_insert_range to restore after errors
fs/ntfs3: Refactoring attr_punch_hole to restore after errors
fs/ntfs3: Refactoring attr_set_size to restore after errors
fs/ntfs3: New function ntfs_bad_inode
fs/ntfs3: Make MFT zone less fragmented
fs/ntfs3: Check possible errors in run_pack in advance
fs/ntfs3: Added comments to frecord functions
fs/ntfs3: Fill duplicate info in ni_add_name
fs/ntfs3: Make static function attr_load_runs
fs/ntfs3: Add new argument is_mft to ntfs_mark_rec_free
fs/ntfs3: Remove unused mi_mark_free
fs/ntfs3: Fix very fragmented case in attr_punch_hole
fs/ntfs3: Fix work with fragmented xattr
fs/ntfs3: Make ntfs_fallocate return -ENOSPC instead of -EFBIG
fs/ntfs3: extend ni_insert_nonresident to return inserted ATTR_LIST_ENTRY
fs/ntfs3: Check reserved size for maximum allowed
...
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The goto out calls kfree(value) on an uninitialized pointer. Just
return directly as the other error paths do.
Fixes: 460bbf2990b3 ("fs/ntfs3: Do not change mode if ntfs_set_ea failed")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Since the function wnd_bits is defined but not called in any file, it is
a useless function, and we delete it in view of the brevity of the code.
Remove some warnings found by running scripts/kernel-doc, which is
caused by using 'make W=1'.
fs/ntfs3/bitmap.c:54:19: warning: unused function 'wnd_bits' [-Wunused-function].
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Function ni_ins_new_attr now returns ERR_PTR(err),
so we check it now in other functions like ni_expand_mft_list
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Also removed uninformative print
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Added done and undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Added comments to code
Added new function run_clone to make a copy of run
Added done and undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Added comments to code
Added two undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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There are repetitive steps in case of bad inode
This commit wraps them in function
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Now we take free space after the MFT zone if the MFT zone shrinks.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Checking in advance speeds things up in some cases.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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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>
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Work with names must be completed in ni_add_name
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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attr_load_runs is an internal function
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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This argument helps in avoiding double locking
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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Cleaning up dead code
Fix wrong comments
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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In some cases we need to ni_find_attr attr_b
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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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>
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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>
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Fixes xfstest generic/300
Fixes: 4534a70b7056 ("fs/ntfs3: Add headers and misc files")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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Add functions for inserting hole in file and inserting range in run.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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We must check return value of log_read_rst
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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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>
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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>
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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>
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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>
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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>
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'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>
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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>
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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>
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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>
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This commit makes function a bit more readable
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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__d_lookup_rcu() is one of the hottest functions in the kernel on
certain loads, and it is complicated by filesystems that might want to
have their own name compare function.
We can improve code generation by moving the test of DCACHE_OP_COMPARE
outside the loop, which makes the loop itself much simpler, at the cost
of some code duplication. But both cases end up being simpler, and the
"native" direct case-sensitive compare particularly so.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Easily done now, just by clearing FMODE_LSEEK in ->f_mode
during proc_reg_open() for such entries.
Fixes: 868941b14441 "fs: remove no_llseek"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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