IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
Pull bcachefs fixes from Kent Overstreet:
"Assorted odds and ends...
- two downgrade fixes
- a couple snapshot deletion and repair fixes, thanks to noradtux for
finding these and providing the image to debug them
- a couple assert fixes
- convert to folio helper, from Matthew
- some improved error messages
- bit of code reorganization (just moving things around); doing this
while things are quiet so I'm not rebasing fixes past reorgs
- don't return -EROFS on inconsistency error in recovery, this
confuses util-linux and has it retry the mount
- fix failure to return error on misaligned dio write; reported as an
issue with coreutils shred"
* tag 'bcachefs-2024-05-30' of https://evilpiepirate.org/git/bcachefs: (21 commits)
bcachefs: Fix failure to return error on misaligned dio write
bcachefs: Don't return -EROFS from mount on inconsistency error
bcachefs: Fix uninitialized var warning
bcachefs: Split out sb-errors_format.h
bcachefs: Split out journal_seq_blacklist_format.h
bcachefs: Split out replicas_format.h
bcachefs: Split out disk_groups_format.h
bcachefs: split out sb-downgrade_format.h
bcachefs: split out sb-members_format.h
bcachefs: Better fsck error message for key version
bcachefs: btree_gc can now handle unknown btrees
bcachefs: add missing MODULE_DESCRIPTION()
bcachefs: Fix setting of downgrade recovery passes/errors
bcachefs: Run check_key_has_snapshot in snapshot_delete_keys()
bcachefs: Refactor delete_dead_snapshots()
bcachefs: Fix locking assert
bcachefs: Fix lookup_first_inode() when inode_generations are present
bcachefs: Plumb bkey into __btree_err()
bcachefs: Use copy_folio_from_iter_atomic()
bcachefs: Fix sb-downgrade validation
...
This reverts commit 681ce86235.
We gave it a try, but it turns out the kernel test robot did in fact
find performance regressions for it, so we'll have to look at the more
involved alternative fixes for Yafang Shao's Elasticsearch load issue.
There were several alternatives discussed, they just weren't as simple
as this first attempt.
The report is of a -7.4% regression of filebench.sum_operations/s, which
appears significant enough to trigger my "this patch may get reverted if
somebody finds a performance regression on some other load" rule.
So it's still the case that we should end up deleting dentries more
aggressively - or just be better at pruning them later - but it needs a
bit more finesse than this simple thing.
Link: https://lore.kernel.org/all/202405291318.4dfbb352-oliver.sang@intel.com/
Cc: Yafang Shao <laoar.shao@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull 9p fixes from Dominique Martinet:
"Two fixes headed to stable trees:
- a trace event was dumping uninitialized values
- a missing lock that was thought to have exclusive access, and it
turned out not to"
* tag '9p-for-6.10-rc2' of https://github.com/martinetd/linux:
9p: add missing locking around taking dentry fid list
net/9p: fix uninit-value in p9_client_rpc()
We were accidentally returning -EROFS during recovery on filesystem
inconsistency - since this is what the journal returns on emergency
shutdown.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Compatibility fix - we no longer have a separate table for which order
gc walks btrees in, and special case the stripes btree directly.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Fix the 'make W=1' warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in fs/bcachefs/mean_and_variance_test.o
Signed-off-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_check_version_downgrade() was setting c->sb.version, which
bch2_sb_set_downgrade() expects to be at the previous version; and it
shouldn't even have been set directly because c->sb.version is updated
by write_super().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
delete_dead_snapshots now runs before the main fsck.c passes which check
for keys for invalid snapshots; thus, it needs those checks as well.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Consolidate per-key work into delete_dead_snapshots_process_key(), so we
now walk all keys once, not twice.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We now track whether a transaction is locked, and verify that we don't
have nodes locked when the transaction isn't locked; reorder relocks to
not pop the new assert.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This function is used for finding the hash seed (which is the same in
all versions of an inode in different snapshots): ff an inode has been
deleted in a child snapshot we need to iterate until we find a live
version.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Pull vfs fixes from Christian Brauner:
- Fix io_uring based write-through after converting cifs to use the
netfs library
- Fix aio error handling when doing write-through via netfs library
- Fix performance regression in iomap when used with non-large folio
mappings
- Fix signalfd error code
- Remove obsolete comment in signalfd code
- Fix async request indication in netfs_perform_write() by raising
BDP_ASYNC when IOCB_NOWAIT is set
- Yield swap device immediately to prevent spurious EBUSY errors
- Don't cross a .backup mountpoint from backup volumes in afs to avoid
infinite loops
- Fix a race between umount and async request completion in 9p after 9p
was converted to use the netfs library
* tag 'vfs-6.10-rc2.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
netfs, 9p: Fix race between umount and async request completion
afs: Don't cross .backup mountpoint from backup volume
swap: yield device immediately
netfs: Fix setting of BDP_ASYNC from iocb flags
signalfd: drop an obsolete comment
signalfd: fix error return code
iomap: fault in smaller chunks for non-large folio mappings
filemap: add helper mapping_max_folio_size()
netfs: Fix AIO error handling when doing write-through
netfs: Fix io_uring based write-through
copy_page_from_iter_atomic() will be removed at some point.
Also fixup a comment for folios.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Superblock downgrade entries are only two byte aligned, but section
sizes are 8 byte aligned, which means we have to be careful about
overrun checks; an entry that crosses the end of the section is allowed
(and ignored) as long as it has zero errors.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Pull smb client fixes from Steve French:
- two important netfs integration fixes - including for a data
corruption and also fixes for multiple xfstests
- reenable swap support over SMB3
* tag '6.10-rc-smb3-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix missing set of remote_i_size
cifs: Fix smb3_insert_range() to move the zero_point
cifs: update internal version number
smb3: reenable swapfiles over SMB3 mounts
Pull misc fixes from Andrew Morton:
"16 hotfixes, 11 of which are cc:stable.
A few nilfs2 fixes, the remainder are for MM: a couple of selftests
fixes, various singletons fixing various issues in various parts"
* tag 'mm-hotfixes-stable-2024-05-25-09-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm/ksm: fix possible UAF of stable_node
mm/memory-failure: fix handling of dissolved but not taken off from buddy pages
mm: /proc/pid/smaps_rollup: avoid skipping vma after getting mmap_lock again
nilfs2: fix potential hang in nilfs_detach_log_writer()
nilfs2: fix unexpected freezing of nilfs_segctor_sync()
nilfs2: fix use-after-free of timer for log writer thread
selftests/mm: fix build warnings on ppc64
arm64: patching: fix handling of execmem addresses
selftests/mm: compaction_test: fix bogus test success and reduce probability of OOM-killer invocation
selftests/mm: compaction_test: fix incorrect write of zero to nr_hugepages
selftests/mm: compaction_test: fix bogus test success on Aarch64
mailmap: update email address for Satya Priya
mm/huge_memory: don't unpoison huge_zero_folio
kasan, fortify: properly rename memintrinsics
lib: add version into /proc/allocinfo output
mm/vmalloc: fix vmalloc which may return null if called with __GFP_NOFAIL
Pull ceph updates from Ilya Dryomov:
"A series from Xiubo that adds support for additional access checks
based on MDS auth caps which were recently made available to clients.
This is needed to prevent scenarios where the MDS quietly discards
updates that a UID-restricted client previously (wrongfully) acked to
the user.
Other than that, just a documentation fixup"
* tag 'ceph-for-6.10-rc1' of https://github.com/ceph/ceph-client:
doc: ceph: update userspace command to get CephFS metadata
ceph: add CEPHFS_FEATURE_MDS_AUTH_CAPS_CHECK feature bit
ceph: check the cephx mds auth access for async dirop
ceph: check the cephx mds auth access for open
ceph: check the cephx mds auth access for setattr
ceph: add ceph_mds_check_access() helper
ceph: save cap_auths in MDS client when session is opened
Pull ntfs3 updates from Konstantin Komarov:
"Fixes:
- reusing of the file index (could cause the file to be trimmed)
- infinite dir enumeration
- taking DOS names into account during link counting
- le32_to_cpu conversion, 32 bit overflow, NULL check
- some code was refactored
Changes:
- removed max link count info display during driver init
Remove:
- atomic_open has been removed for lack of use"
* tag 'ntfs3_for_6.10' of https://github.com/Paragon-Software-Group/linux-ntfs3:
fs/ntfs3: Break dir enumeration if directory contents error
fs/ntfs3: Fix case when index is reused during tree transformation
fs/ntfs3: Mark volume as dirty if xattr is broken
fs/ntfs3: Always make file nonresident on fallocate call
fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode
fs/ntfs3: Use variable length array instead of fixed size
fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow
fs/ntfs3: Check 'folio' pointer for NULL
fs/ntfs3: Missed le32_to_cpu conversion
fs/ntfs3: Remove max link count info display during driver init
fs/ntfs3: Taking DOS names into account during link counting
fs/ntfs3: remove atomic_open
fs/ntfs3: use kcalloc() instead of kzalloc()
Pull smb server fixes from Steve French:
"Two ksmbd server fixes, both for stable"
* tag '6.10-rc-ksmbd-server-fixes' of git://git.samba.org/ksmbd:
ksmbd: ignore trailing slashes in share paths
ksmbd: avoid to send duplicate oplock break notifications
Occasionally, the generic/001 xfstest will fail indicating corruption in
one of the copy chains when run on cifs against a server that supports
FSCTL_DUPLICATE_EXTENTS_TO_FILE (eg. Samba with a share on btrfs). The
problem is that the remote_i_size value isn't updated by cifs_setsize()
when called by smb2_duplicate_extents(), but i_size *is*.
This may cause cifs_remap_file_range() to then skip the bit after calling
->duplicate_extents() that sets sizes.
Fix this by calling netfs_resize_file() in smb2_duplicate_extents() before
calling cifs_setsize() to set i_size.
This means we don't then need to call netfs_resize_file() upon return from
->duplicate_extents(), but we also fix the test to compare against the pre-dup
inode size.
[Note that this goes back before the addition of remote_i_size with the
netfs_inode struct. It should probably have been setting cifsi->server_eof
previously.]
Fixes: cfc63fc812 ("smb3: fix cached file size problems in duplicate extents (reflink)")
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Paulo Alcantara <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
Signed-off-by: Steve French <stfrench@microsoft.com>
Syzbot has reported a potential hang in nilfs_detach_log_writer() called
during nilfs2 unmount.
Analysis revealed that this is because nilfs_segctor_sync(), which
synchronizes with the log writer thread, can be called after
nilfs_segctor_destroy() terminates that thread, as shown in the call trace
below:
nilfs_detach_log_writer
nilfs_segctor_destroy
nilfs_segctor_kill_thread --> Shut down log writer thread
flush_work
nilfs_iput_work_func
nilfs_dispose_list
iput
nilfs_evict_inode
nilfs_transaction_commit
nilfs_construct_segment (if inode needs sync)
nilfs_segctor_sync --> Attempt to synchronize with
log writer thread
*** DEADLOCK ***
Fix this issue by changing nilfs_segctor_sync() so that the log writer
thread returns normally without synchronizing after it terminates, and by
forcing tasks that are already waiting to complete once after the thread
terminates.
The skipped inode metadata flushout will then be processed together in the
subsequent cleanup work in nilfs_segctor_destroy().
Link: https://lkml.kernel.org/r/20240520132621.4054-4-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+e3973c409251e136fdd0@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=e3973c409251e136fdd0
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: "Bai, Shuangpeng" <sjb7183@psu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
A potential and reproducible race issue has been identified where
nilfs_segctor_sync() would block even after the log writer thread writes a
checkpoint, unless there is an interrupt or other trigger to resume log
writing.
This turned out to be because, depending on the execution timing of the
log writer thread running in parallel, the log writer thread may skip
responding to nilfs_segctor_sync(), which causes a call to schedule()
waiting for completion within nilfs_segctor_sync() to lose the opportunity
to wake up.
The reason why waking up the task waiting in nilfs_segctor_sync() may be
skipped is that updating the request generation issued using a shared
sequence counter and adding an wait queue entry to the request wait queue
to the log writer, are not done atomically. There is a possibility that
log writing and request completion notification by nilfs_segctor_wakeup()
may occur between the two operations, and in that case, the wait queue
entry is not yet visible to nilfs_segctor_wakeup() and the wake-up of
nilfs_segctor_sync() will be carried over until the next request occurs.
Fix this issue by performing these two operations simultaneously within
the lock section of sc_state_lock. Also, following the memory barrier
guidelines for event waiting loops, move the call to set_current_state()
in the same location into the event waiting loop to ensure that a memory
barrier is inserted just before the event condition determination.
Link: https://lkml.kernel.org/r/20240520132621.4054-3-konishi.ryusuke@gmail.com
Fixes: 9ff05123e3 ("nilfs2: segment constructor")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: "Bai, Shuangpeng" <sjb7183@psu.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "nilfs2: fix log writer related issues".
This bug fix series covers three nilfs2 log writer-related issues,
including a timer use-after-free issue and potential deadlock issue on
unmount, and a potential freeze issue in event synchronization found
during their analysis. Details are described in each commit log.
This patch (of 3):
A use-after-free issue has been reported regarding the timer sc_timer on
the nilfs_sc_info structure.
The problem is that even though it is used to wake up a sleeping log
writer thread, sc_timer is not shut down until the nilfs_sc_info structure
is about to be freed, and is used regardless of the thread's lifetime.
Fix this issue by limiting the use of sc_timer only while the log writer
thread is alive.
Link: https://lkml.kernel.org/r/20240520132621.4054-1-konishi.ryusuke@gmail.com
Link: https://lkml.kernel.org/r/20240520132621.4054-2-konishi.ryusuke@gmail.com
Fixes: fdce895ea5 ("nilfs2: change sc_timer from a pointer to an embedded one in struct nilfs_sc_info")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: "Bai, Shuangpeng" <sjb7183@psu.edu>
Closes: https://groups.google.com/g/syzkaller/c/MK_LYqtt8ko/m/8rgdWeseAwAJ
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Pull more btrfs updates from David Sterba:
"A few more updates, mostly stability fixes or user visible changes:
- fix race in zoned mode during device replace that can lead to
use-after-free
- update return codes and lower message levels for quota rescan where
it's causing false alerts
- fix unexpected qgroup id reuse under some conditions
- fix condition when looking up extent refs
- add option norecovery (removed in 6.8), the intended replacements
haven't been used and some aplications still rely on the old one
- build warning fixes"
* tag 'for-6.10-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: re-introduce 'norecovery' mount option
btrfs: fix end of tree detection when searching for data extent ref
btrfs: scrub: initialize ret in scrub_simple_mirror() to fix compilation warning
btrfs: zoned: fix use-after-free due to race with dev replace
btrfs: qgroup: fix qgroup id collision across mounts
btrfs: qgroup: update rescan message levels and error codes
Pull more erofs updates from Gao Xiang:
"The main ones are metadata API conversion to byte offsets by Al Viro.
Another patch gets rid of unnecessary memory allocation out of DEFLATE
decompressor. The remaining one is a trivial cleanup.
- Convert metadata APIs to byte offsets
- Avoid allocating DEFLATE streams unnecessarily
- Some erofs_show_options() cleanup"
* tag 'erofs-for-6.10-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: avoid allocating DEFLATE streams before mounting
z_erofs_pcluster_begin(): don't bother with rounding position down
erofs: don't round offset down for erofs_read_metabuf()
erofs: don't align offset for erofs_read_metabuf() (simple cases)
erofs: mechanically convert erofs_read_metabuf() to offsets
erofs: clean up erofs_show_options()
Pull bcachefs fixes from Kent Overstreet:
"Nothing exciting, just syzbot fixes (except for the one
FMODE_CAN_ODIRECT patch).
Looks like syzbot reports have slowed down; this is all catch up from
two weeks of conferences.
Next hardening project is using Thomas's error injection tooling to
torture test repair"
* tag 'bcachefs-2024-05-24' of https://evilpiepirate.org/git/bcachefs:
bcachefs: Fix race path in bch2_inode_insert()
bcachefs: Ensure we're RW before journalling
bcachefs: Fix shutdown ordering
bcachefs: Fix unsafety in bch2_dirent_name_bytes()
bcachefs: Fix stack oob in __bch2_encrypt_bio()
bcachefs: Fix btree_trans leak in bch2_readahead()
bcachefs: Fix bogus verify_replicas_entry() assert
bcachefs: Check for subvolues with bogus snapshot/inode fields
bcachefs: bch2_checksum() returns 0 for unknown checksum type
bcachefs: Fix bch2_alloc_ciphers()
bcachefs: Add missing guard in bch2_snapshot_has_children()
bcachefs: Fix missing parens in drop_locks_do()
bcachefs: Improve bch2_assert_pos_locked()
bcachefs: Fix shift overflows in replicas.c
bcachefs: Fix shift overflow in btree_lost_data()
bcachefs: Fix ref in trans_mark_dev_sbs() error path
bcachefs: set FMODE_CAN_ODIRECT instead of a dummy direct_IO method
bcachefs: Fix rcu splat in check_fix_ptrs()
Pull tracefs/eventfs updates from Steven Rostedt:
"Bug fixes:
- The eventfs directories need to have unique inode numbers. Make
sure that they do not get the default file inode number.
- Update the inode uid and gid fields on remount.
When a remount happens where a uid and/or gid is specified, all the
tracefs files and directories should get the specified uid and/or
gid. But this can be sporadic when some uids were assigned already.
There's already a list of inodes that are allocated. Just update
their uid and gid fields at the time of remount.
- Update the eventfs_inodes on remount from the top level "events"
descriptor.
There was a bug where not all the eventfs files or directories
where getting updated on remount. One fix was to clear the
SAVED_UID/GID flags from the inode list during the iteration of the
inodes during the remount. But because the eventfs inodes can be
freed when the last referenced is released, not all the
eventfs_inodes were being updated. This lead to the ownership
selftest to fail if it was run a second time (the first time would
leave eventfs_inodes with no corresponding tracefs_inode).
Instead, for eventfs_inodes, only process the "events"
eventfs_inode from the list iteration, as it is guaranteed to have
a tracefs_inode (it's never freed while the "events" directory
exists). As it has a list of its children, and the children have a
list of their children, just iterate all the eventfs_inodes from
the "events" descriptor and it is guaranteed to get all of them.
- Clear the EVENT_INODE flag from the tracefs_drop_inode() callback.
Currently the EVENTFS_INODE FLAG is cleared in the tracefs_d_iput()
callback. But this is the wrong location. The iput() callback is
called when the last reference to the dentry inode is hit. There
could be a case where two dentry's have the same inode, and the
flag will be cleared prematurely. The flag needs to be cleared when
the last reference of the inode is dropped and that happens in the
inode's drop_inode() callback handler.
Cleanups:
- Consolidate the creation of a tracefs_inode for an eventfs_inode
A tracefs_inode is created for both files and directories of the
eventfs system. It is open coded. Instead, consolidate it into a
single eventfs_get_inode() function call.
- Remove the eventfs getattr and permission callbacks.
The permissions for the eventfs files and directories are updated
when the inodes are created, on remount, and when the user sets
them (via setattr). The inodes hold the current permissions so
there is no need to have custom getattr or permissions callbacks as
they will more likely cause them to be incorrect. The inode's
permissions are updated when they should be updated. Remove the
getattr and permissions inode callbacks.
- Do not update eventfs_inode attributes on creation of inodes.
The eventfs_inodes attribute field is used to store the permissions
of the directories and files for when their corresponding inodes
are freed and are created again. But when the creation of the
inodes happen, the eventfs_inode attributes are recalculated. The
recalculation should only happen when the permissions change for a
given file or directory. Currently, the attribute changes are just
being set to their current files so this is not a bug, but it's
unnecessary and error prone. Stop doing that.
- The events directory inode is created once when the events
directory is created and deleted when it is deleted. It is now
updated on remount and when the user changes the permissions.
There's no need to use the eventfs_inode of the events directory to
store the events directory permissions. But using it to store the
default permissions for the files within the directory that have
not been updated by the user can simplify the code"
* tag 'trace-tracefs-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
eventfs: Do not use attributes for events directory
eventfs: Cleanup permissions in creation of inodes
eventfs: Remove getattr and permission callbacks
eventfs: Consolidate the eventfs_inode update in eventfs_get_inode()
tracefs: Clear EVENT_INODE flag in tracefs_drop_inode()
eventfs: Update all the eventfs_inodes from the events descriptor
tracefs: Update inode permissions on remount
eventfs: Keep the directories from having the same inode number as files
Since commit (5d8edfb900 "iomap: Copy larger chunks from userspace"),
iomap will try to copy in larger chunks than PAGE_SIZE. However, if the
mapping doesn't support large folio, only one page of maximum 4KB will
be created and 4KB data will be writen to pagecache each time. Then,
next 4KB will be handled in next iteration. This will cause potential
write performance problem.
If chunk is 2MB, total 512 pages need to be handled finally. During this
period, fault_in_iov_iter_readable() is called to check iov_iter readable
validity. Since only 4KB will be handled each time, below address space
will be checked over and over again:
start end
-
buf, buf+2MB
buf+4KB, buf+2MB
buf+8KB, buf+2MB
...
buf+2044KB buf+2MB
Obviously the checking size is wrong since only 4KB will be handled each
time. So this will get a correct chunk to let iomap work well in non-large
folio case.
With this change, the write speed will be stable. Tested on ARM64 device.
Before:
- dd if=/dev/zero of=/dev/sda bs=400K count=10485 (334 MB/s)
- dd if=/dev/zero of=/dev/sda bs=800K count=5242 (278 MB/s)
- dd if=/dev/zero of=/dev/sda bs=1600K count=2621 (204 MB/s)
- dd if=/dev/zero of=/dev/sda bs=2200K count=1906 (170 MB/s)
- dd if=/dev/zero of=/dev/sda bs=3000K count=1398 (150 MB/s)
- dd if=/dev/zero of=/dev/sda bs=4500K count=932 (139 MB/s)
After:
- dd if=/dev/zero of=/dev/sda bs=400K count=10485 (339 MB/s)
- dd if=/dev/zero of=/dev/sda bs=800K count=5242 (330 MB/s)
- dd if=/dev/zero of=/dev/sda bs=1600K count=2621 (332 MB/s)
- dd if=/dev/zero of=/dev/sda bs=2200K count=1906 (333 MB/s)
- dd if=/dev/zero of=/dev/sda bs=3000K count=1398 (333 MB/s)
- dd if=/dev/zero of=/dev/sda bs=4500K count=932 (333 MB/s)
Fixes: 5d8edfb900 ("iomap: Copy larger chunks from userspace")
Cc: stable@vger.kernel.org
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20240521114939.2541461-2-xu.yang_2@nxp.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This can be triggered by mounting a cifs filesystem with a cache=strict
mount option and then, using the fsx program from xfstests, doing:
ltp/fsx -A -d -N 1000 -S 11463 -P /tmp /cifs-mount/foo \
--replay-ops=gen112-fsxops
Where gen112-fsxops holds:
fallocate 0x6be7 0x8fc5 0x377d3
copy_range 0x9c71 0x77e8 0x2edaf 0x377d3
write 0x2776d 0x8f65 0x377d3
The problem is that netfs_io_request::len is being used for two purposes
and ends up getting set to the amount of data we transferred, not the
amount of data the caller asked to be transferred (for various reasons,
such as mmap'd writes, we might end up rounding out the data written to the
server to include the entire folio at each end).
Fix this by keeping the amount we were asked to write in ->len and using
->submitted to track what we issued ops for. Then, when we come to calling
->ki_complete(), ->len is the right size.
This also required netfs_cleanup_dio_write() to change since we're no
longer advancing wreq->len. Use wreq->transferred instead as we might have
done a short read.
With this, the generic/112 xfstest passes if cifs is forced to put all
non-DIO opens into write-through mode.
Fixes: 288ace2f57 ("netfs: New writeback implementation")
Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/295086.1716298663@warthog.procyon.org.uk
cc: Jeff Layton <jlayton@kernel.org>
cc: Steve French <stfrench@microsoft.com>
cc: Enzo Matsumiya <ematsumiya@suse.de>
cc: netfs@lists.linux.dev
cc: v9fs@lists.linux.dev
cc: linux-afs@lists.infradead.org
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
If we somehow attempt to read beyond the directory size, an error
is supposed to be returned.
However, in some cases, read requests do not stop and instead enter
into a loop.
To avoid this, we set the position in the directory to the end.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: stable@vger.kernel.org
