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Highlights include:
Bugfixes:
- SUNRPC: A fix to re-probe the target RPC port after an ECONNRESET error
- SUNRPC: Handle allocation errors from rpcb_call_async()
- SUNRPC: Fix a use-after-free condition in rpc_pipefs
- SUNRPC: fix up various checks for timeouts
- NFSv4.1: Handle NFS4ERR_DELAY errors during session trunking
- NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
- NFSv4: Ensure that we test all delegations when the server notifies
us that it may have revoked some of them
Features:
- Allow knfsd processes to break out of NFS4ERR_DELAY loops when
re-exporting NFSv4.x by setting appropriate values for the
'delay_retrans' module parameter.
- nfs: Convert nfs_symlink() to use a folio
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Merge tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Bugfixes:
- SUNRPC:
- re-probe the target RPC port after an ECONNRESET error
- handle allocation errors from rpcb_call_async()
- fix a use-after-free condition in rpc_pipefs
- fix up various checks for timeouts
- NFSv4.1:
- Handle NFS4ERR_DELAY errors during session trunking
- fix SP4_MACH_CRED protection for pnfs IO
- NFSv4:
- Ensure that we test all delegations when the server notifies
us that it may have revoked some of them
Features:
- Allow knfsd processes to break out of NFS4ERR_DELAY loops when
re-exporting NFSv4.x by setting appropriate values for the
'delay_retrans' module parameter
- nfs: Convert nfs_symlink() to use a folio"
* tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: Convert nfs_symlink() to use a folio
SUNRPC: Fix RPC client cleaned up the freed pipefs dentries
NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
SUNRPC: Add an IS_ERR() check back to where it was
NFSv4.1: fix handling NFS4ERR_DELAY when testing for session trunking
nfs41: drop dependency between flexfiles layout driver and NFSv3 modules
NFSv4: fairly test all delegations on a SEQ4_ revocation
SUNRPC: SOFTCONN tasks should time out when on the sending list
SUNRPC: Force close the socket when a hard error is reported
SUNRPC: Don't skip timeout checks in call_connect_status()
SUNRPC: ECONNRESET might require a rebind
NFSv4/pnfs: Allow layoutget to return EAGAIN for softerr mounts
NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY
- Fix an issue that exfat timestamps are not updated caused by
new timestamp accessor function patch.
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Merge tag 'exfat-for-6.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat
Pull exfat updates from Namjae Jeon:
- Fix an issue that exfat timestamps are not updated caused by new
timestamp accessor function patch
* tag 'exfat-for-6.7-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat:
exfat: fix ctime is not updated
exfat: fix setting uninitialized time to ctime/atime
* Realtime device subsystem
- Cleanup usage of xfs_rtblock_t and xfs_fsblock_t data types.
- Replace open coded conversions between rt blocks and rt extents with
calls to static inline helpers.
- Replace open coded realtime geometry compuation and macros with helper
functions.
- CPU usage optimizations for realtime allocator.
- Misc. Bug fixes associated with Realtime device.
* Allow read operations to execute while an FICLONE ioctl is being serviced.
* Misc. bug fixes
- Alert user when xfs_droplink() encounters an inode with a link count of zero.
- Handle the case where the allocator could return zero extents when
servicing an fallocate request.
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs updates from Chandan Babu:
- Realtime device subsystem:
- Cleanup usage of xfs_rtblock_t and xfs_fsblock_t data types
- Replace open coded conversions between rt blocks and rt extents
with calls to static inline helpers
- Replace open coded realtime geometry compuation and macros with
helper functions
- CPU usage optimizations for realtime allocator
- Misc bug fixes associated with Realtime device
- Allow read operations to execute while an FICLONE ioctl is being
serviced
- Misc bug fixes:
- Alert user when xfs_droplink() encounters an inode with a link
count of zero
- Handle the case where the allocator could return zero extents when
servicing an fallocate request
* tag 'xfs-6.7-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (40 commits)
xfs: allow read IO and FICLONE to run concurrently
xfs: handle nimaps=0 from xfs_bmapi_write in xfs_alloc_file_space
xfs: introduce protection for drop nlink
xfs: don't look for end of extent further than necessary in xfs_rtallocate_extent_near()
xfs: don't try redundant allocations in xfs_rtallocate_extent_near()
xfs: limit maxlen based on available space in xfs_rtallocate_extent_near()
xfs: return maximum free size from xfs_rtany_summary()
xfs: invert the realtime summary cache
xfs: simplify rt bitmap/summary block accessor functions
xfs: simplify xfs_rtbuf_get calling conventions
xfs: cache last bitmap block in realtime allocator
xfs: use accessor functions for summary info words
xfs: consolidate realtime allocation arguments
xfs: create helpers for rtsummary block/wordcount computations
xfs: use accessor functions for bitmap words
xfs: create helpers for rtbitmap block/wordcount computations
xfs: create a helper to handle logging parts of rt bitmap/summary blocks
xfs: convert rt summary macros to helpers
xfs: convert open-coded xfs_rtword_t pointer accesses to helper
xfs: remove XFS_BLOCKWSIZE and XFS_BLOCKWMASK macros
...
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Merge tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fanotify fsid updates from Christian Brauner:
"This work is part of the plan to enable fanotify to serve as a drop-in
replacement for inotify. While inotify is availabe on all filesystems,
fanotify currently isn't.
In order to support fanotify on all filesystems two things are needed:
(1) all filesystems need to support AT_HANDLE_FID
(2) all filesystems need to report a non-zero f_fsid
This contains (1) and allows filesystems to encode non-decodable file
handlers for fanotify without implementing any exportfs operations by
encoding a file id of type FILEID_INO64_GEN from i_ino and
i_generation.
Filesystems that want to opt out of encoding non-decodable file ids
for fanotify that don't support NFS export can do so by providing an
empty export_operations struct.
This also partially addresses (2) by generating f_fsid for simple
filesystems as well as freevxfs. Remaining filesystems will be dealt
with by separate patches.
Finally, this contains the patch from the current exportfs maintainers
which moves exportfs under vfs with Chuck, Jeff, and Amir as
maintainers and vfs.git as tree"
* tag 'vfs-6.7.fsid' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
MAINTAINERS: create an entry for exportfs
fs: fix build error with CONFIG_EXPORTFS=m or not defined
freevxfs: derive f_fsid from bdev->bd_dev
fs: report f_fsid from s_dev for "simple" filesystems
exportfs: support encoding non-decodeable file handles by default
exportfs: define FILEID_INO64_GEN* file handle types
exportfs: make ->encode_fh() a mandatory method for NFS export
exportfs: add helpers to check if filesystem can encode/decode file handles
- Don't update inode timestamps for direct writes (performance regression fix).
- Skip no-op quota records instead of panicing.
- Fix a RCU race in gfs2_permission().
- Various other smaller fixes and cleanups all over the place.
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Merge tag 'gfs2-v6.6-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
Pull gfs2 updates from Andreas Gruenbacher:
- Don't update inode timestamps for direct writes (performance
regression fix)
- Skip no-op quota records instead of panicing
- Fix a RCU race in gfs2_permission()
- Various other smaller fixes and cleanups all over the place
* tag 'gfs2-v6.6-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (24 commits)
gfs2: don't withdraw if init_threads() got interrupted
gfs2: remove dead code in add_to_queue
gfs2: Fix slab-use-after-free in gfs2_qd_dealloc
gfs2: Silence "suspicious RCU usage in gfs2_permission" warning
gfs2: fs: derive f_fsid from s_uuid
gfs2: No longer use 'extern' in function declarations
gfs2: Rename gfs2_lookup_{ simple => meta }
gfs2: Convert gfs2_internal_read to folios
gfs2: Convert stuffed_readpage to folios
gfs2: Minor gfs2_write_jdata_batch PAGE_SIZE cleanup
gfs2: Get rid of gfs2_alloc_blocks generation parameter
gfs2: Add metapath_dibh helper
gfs2: Clean up quota.c:print_message
gfs2: Clean up gfs2_alloc_parms initializers
gfs2: Two quota=account mode fixes
gfs2: Stop using GFS2_BASIC_BLOCK and GFS2_BASIC_BLOCK_SHIFT
gfs2: setattr_chown: Add missing initialization
gfs2: fix an oops in gfs2_permission
gfs2: ignore negated quota changes
gfs2: Don't update inode timestamps for direct writes
...
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Merge tag 'ovl-update-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
Pull overlayfs updates from Amir Goldstein:
- Overlayfs aio cleanups and fixes
Cleanups and minor fixes in preparation for factoring out of
read/write passthrough code.
- Overlayfs lock ordering changes
Hold mnt_writers only throughout copy up instead of a long lived
elevated refcount.
- Add support for nesting overlayfs private xattrs
There are cases where you want to use an overlayfs mount as a
lowerdir for another overlayfs mount. For example, if the system
rootfs is on overlayfs due to composefs, or to make it volatile (via
tmpfs), then you cannot currently store a lowerdir on the rootfs,
because the inner overlayfs will eat all the whiteouts and overlay
xattrs. This means you can't e.g. store on the rootfs a prepared
container image for use with overlayfs.
This adds support for nesting of overlayfs mounts by escaping the
problematic features and unescaping them when exposing to the
overlayfs user.
- Add new mount options for appending lowerdirs
* tag 'ovl-update-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs:
ovl: add support for appending lowerdirs one by one
ovl: refactor layer parsing helpers
ovl: store and show the user provided lowerdir mount option
ovl: remove unused code in lowerdir param parsing
ovl: Add documentation on nesting of overlayfs mounts
ovl: Add an alternative type of whiteout
ovl: Support escaped overlay.* xattrs
ovl: Add OVL_XATTR_TRUSTED/USER_PREFIX_LEN macros
ovl: Move xattr support to new xattrs.c file
ovl: do not encode lower fh with upper sb_writers held
ovl: do not open/llseek lower file with upper sb_writers held
ovl: reorder ovl_want_write() after ovl_inode_lock()
ovl: split ovl_want_write() into two helpers
ovl: add helper ovl_file_modified()
ovl: protect copying of realinode attributes to ovl inode
ovl: punt write aio completion to workqueue
ovl: propagate IOCB_APPEND flag on writes to realfile
ovl: use simpler function to convert iocb to rw flags
Here's the second big bcachefs pull request. This brings your tree up to
date with my master branch, which is what existing bcachefs users are
currently running.
All but the last few patches have been in linux-next, those being small
fixes. Test results from my dashboard:
https://evilpiepirate.org/~testdashboard/ci?commit=c7046ed0cf9bb33599aa7e72e7b67bba4be42d64
New features:
- rebalance_work btree (and metadata version 1.3): the rebalance thread
no longer has to scan to find extents that need processing - big
scalability improvement.
- sb_errors superblock section: this adds counters for each fsck error
type, since filesystem creation, along with the date of the most
recent error. It'll get us better bug reports (since users do not
typically report errors that fsck was able to fix), and I might add
telemetry for this in the future.
Fixes include:
- multiple snapshot deletion fixes
- members_v2 fixups
- deleted_inodes btree fixes
- copygc thread no longer spins when a device is full but has no
fragmented buckets (i.e. rebalance needs to move data around instead)
- a fix for a memory reclaim issue with the btree key cache: we're now
careful not to hold the srcu read lock that blocks key cache reclaim
for too long
- an early allocator locking fix, from Brian
- endianness fixes, from Brian
- CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big
performance improvement on multithreaded workloads
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Merge tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs
Pull more bcachefs updates from Kent Overstreet:
"Here's the second big bcachefs pull request. This brings your tree up
to date with my master branch, which is what existing bcachefs users
are currently running.
New features:
- rebalance_work btree (and metadata version 1.3): the rebalance
thread no longer has to scan to find extents that need processing -
big scalability improvement.
- sb_errors superblock section: this adds counters for each fsck
error type, since filesystem creation, along with the date of the
most recent error. It'll get us better bug reports (since users do
not typically report errors that fsck was able to fix), and I might
add telemetry for this in the future.
Fixes include:
- multiple snapshot deletion fixes
- members_v2 fixups
- deleted_inodes btree fixes
- copygc thread no longer spins when a device is full but has no
fragmented buckets (i.e. rebalance needs to move data around
instead)
- a fix for a memory reclaim issue with the btree key cache: we're
now careful not to hold the srcu read lock that blocks key cache
reclaim for too long
- an early allocator locking fix, from Brian
- endianness fixes, from Brian
- CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y, a big
performance improvement on multithreaded workloads"
* tag 'bcachefs-2023-11-5' of https://evilpiepirate.org/git/bcachefs: (70 commits)
bcachefs: Improve stripe checksum error message
bcachefs: Simplify, fix bch2_backpointer_get_key()
bcachefs: kill thing_it_points_to arg to backpointer_not_found()
bcachefs: bch2_ec_read_extent() now takes btree_trans
bcachefs: bch2_stripe_to_text() now prints ptr gens
bcachefs: Don't iterate over journal entries just for btree roots
bcachefs: Break up bch2_journal_write()
bcachefs: Replace ERANGE with private error codes
bcachefs: bkey_copy() is no longer a macro
bcachefs: x-macro-ify inode flags enum
bcachefs: Convert bch2_fs_open() to darray
bcachefs: Move __bch2_members_v2_get_mut to sb-members.h
bcachefs: bch2_prt_datetime()
bcachefs: CONFIG_BCACHEFS_DEBUG_TRANSACTIONS no longer defaults to y
bcachefs: Add a comment for BTREE_INSERT_NOJOURNAL usage
bcachefs: rebalance_work btree is not a snapshots btree
bcachefs: Add missing printk newlines
bcachefs: Fix recovery when forced to use JSET_NO_FLUSH journal entry
bcachefs: .get_parent() should return an error pointer
bcachefs: Fix bch2_delete_dead_inodes()
...
In gfs2_fill_super(), when mounting a gfs2 filesystem is interrupted,
kthread_create() can return -EINTR. When that happens, we roll back
what has already been done and abort the mount.
Since commit 62dd0f98a0e5 ("gfs2: Flag a withdraw if init_threads()
fails), we are calling gfs2_withdraw_delayed() in gfs2_fill_super();
first via gfs2_make_fs_rw(), then directly. But gfs2_withdraw_delayed()
only marks the filesystem as withdrawing and relies on a caller further
up the stack to do the actual withdraw, which doesn't exist in the
gfs2_fill_super() case. Because the filesystem is marked as withdrawing
/ withdrawn, function gfs2_lm_unmount() doesn't release the dlm
lockspace, so when we try to mount that filesystem again, we get:
gfs2: fsid=gohan:gohan0: Trying to join cluster "lock_dlm", "gohan:gohan0"
gfs2: fsid=gohan:gohan0: dlm_new_lockspace error -17
Since commit b77b4a4815a9 ("gfs2: Rework freeze / thaw logic"), the
deadlock this gfs2_withdraw_delayed() call was supposed to work around
cannot occur anymore because freeze_go_callback() won't take the
sb->s_umount semaphore unconditionally anymore, so we can get rid of the
gfs2_withdraw_delayed() in gfs2_fill_super() entirely.
Reported-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: stable@vger.kernel.org # v6.5+
clang static analyzer complains that value stored to 'gh' is never read.
The code of this line is useless after commit 0b93bac2271e
("gfs2: Remove LM_FLAG_PRIORITY flag"). Remove this code to save space.
Signed-off-by: Su Hui <suhui@nfschina.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
In gfs2_put_super(), whether withdrawn or not, the quota should
be cleaned up by gfs2_quota_cleanup().
Otherwise, struct gfs2_sbd will be freed before gfs2_qd_dealloc (rcu
callback) has run for all gfs2_quota_data objects, resulting in
use-after-free.
Also, gfs2_destroy_threads() and gfs2_quota_cleanup() is already called
by gfs2_make_fs_ro(), so in gfs2_put_super(), after calling
gfs2_make_fs_ro(), there is no need to call them again.
Reported-by: syzbot+29c47e9e51895928698c@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=29c47e9e51895928698c
Signed-off-by: Juntong Deng <juntong.deng@outlook.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Commit 0abd1557e21c added rcu_dereference() for dereferencing ip->i_gl
in gfs2_permission. This now causes lockdep to complain when
gfs2_permission is called in non-RCU context:
WARNING: suspicious RCU usage in gfs2_permission
Switch to rcu_dereference_check() and check for the MAY_NOT_BLOCK flag
to shut up lockdep when we know that dereferencing ip->i_gl is safe.
Fixes: 0abd1557e21c ("gfs2: fix an oops in gfs2_permission")
Reported-by: syzbot+3e5130844b0c0e2b4948@syzkaller.appspotmail.com
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
gfs2 already has optional persistent uuid.
Use that uuid to report f_fsid in statfs(2), same as ext2/ext4/zonefs.
This allows gfs2 to be monitored by fanotify filesystem watch.
for example, with inotify-tools 4.23.8.0, the following command can be
used to watch changes over entire filesystem:
fsnotifywatch --filesystem /mnt/gfs2
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
For non-static function declarations, external linkage is implied and
the 'extern' keyword isn't needed. Some static checkers complain about
the overuse of 'extern', so clean up all the function declarations.
In addition, remove 'extern' from the definition of
free_local_statfs_inodes(); it isn't needed there, either.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Function gfs2_lookup_simple() is used for looking up inodes in the
metadata directory tree, so rename it to gfs2_lookup_meta() to closer
match its purpose. Clean the function up a little on the way.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
In gfs2_write_jdata_batch(), to compute the number of blocks, compute
the total size of the folio batch instead of the number of pages it
contains. Not a functional change.
Note that we don't currently allow mounting filesystems with a block
size bigger than the page size. We could change that after converting
the page cache to folios. The page cache would then only contain
block-size or bigger folios, so rounding wouldn't become an issue here.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Get rid of the generation parameter of gfs2_alloc_blocks(): we only ever
set the generation of the current inode while creating it, so do so
directly.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
- UBI Fastmap improvements
- Minor issues found by static analysis bots in both UBI and UBIFS
- Fix for wrong dentry length UBIFS in fscrypt mode
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Merge tag 'ubifs-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs
Pull UBI and UBIFS updates from Richard Weinberger:
- UBI Fastmap improvements
- Minor issues found by static analysis bots in both UBI and UBIFS
- Fix for wrong dentry length UBIFS in fscrypt mode
* tag 'ubifs-for-linus-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
ubifs: ubifs_link: Fix wrong name len calculating when UBIFS is encrypted
ubi: block: Fix use-after-free in ubiblock_cleanup
ubifs: fix possible dereference after free
ubi: fastmap: Add control in 'UBI_IOCATT' ioctl to reserve PEBs for filling pools
ubi: fastmap: Add module parameter to control reserving filling pool PEBs
ubi: fastmap: Fix lapsed wear leveling for first 64 PEBs
ubi: fastmap: Get wl PEB even ec beyonds the 'max' if free PEBs are run out
ubi: fastmap: may_reserve_for_fm: Don't reserve PEB if fm_anchor exists
ubi: fastmap: Remove unneeded break condition while filling pools
ubi: fastmap: Wait until there are enough free PEBs before filling pools
ubi: fastmap: Use free pebs reserved for bad block handling
ubi: Replace erase_block() with sync_erase()
ubi: fastmap: Allocate memory with GFP_NOFS in ubi_update_fastmap
ubi: fastmap: erase_block: Get erase counter from wl_entry rather than flash
ubi: fastmap: Fix missed ec updating after erasing old fastmap data block
ubifs: Fix missing error code err
ubifs: Fix memory leak of bud->log_hash
ubifs: Fix some kernel-doc comments
We now include the name of the device in the error message - and also
increment the number of checksum errors on that device.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
- backpointer_not_found() checks backpointers_no_use_write_buffer, no
need to do it inbackpointer_get_key().
- always use backpointer_get_node() for pointers to nodes:
backpointer_get_key() was sometimes returning the key from the root
node unlocked.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We're not supposed to have more than one btree_trans at a time in a
given thread - that causes recursive locking deadlocks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Split up bch2_journal_write() to simplify locking:
- bch2_journal_write_pick_flush(), which needs j->lock
- bch2_journal_write_prep, which operates on the journal buffer to be
written and will need the upcoming buf_lock for synchronization with
the btree write buffer flush path
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We avoid using standard error codes: private, per-callsite error codes
make debugging easier.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
BCACHEFS_DEBUG_TRANSACTIONS is useful, but it's too expensive to have on
by default - and it hasn't been coming up in bug reports.
Turn it off by default until we figure out a way to make it cheaper.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
BTREE_INSERT_NOJOURNAL is primarily used for a performance optimization
related to inode updates and fsync - document it.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
rebalance_work entries may refer to entries in the extents btree, which
is a snapshots btree, or they may also refer to entries in the reflink
btree, which is not.
Hence rebalance_work keys may use the snapshot field but it's not
required to be nonzero - add a new btree flag to reflect this.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
When we didn't find anything in the journal that we'd like to use, and
we're forced to use whatever we can find - that entry will have been a
JSET_NO_FLUSH entry with a garbage last_seq value, since it's not
normally used.
Initialize it to something sane, for bch2_fs_journal_start().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Delete the useless check for inum == 0; we'll return -ENOENT without it,
which is what we want.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
- the fsck_err() check for the filesystem being clean was incorrect,
causing us to always fail to delete unlinked inodes
- if a snapshot had been taken, the unlinked inode needs to be
propagated to snapshot leaves so the unlink can happen there - fixed.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
The bucket_offset field of bch_backpointer is a 40-bit bitfield, but the
bch2_backpointer_swab() helper uses swab32. This leads to inconsistency
when an on-disk fs is accessed from an opposite endian machine.
As it turns out, we already have an internal swab40() helper that is
used from the bch_alloc_v4 swab callback. Lift it into the backpointers
header file and use it consistently in both places.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
A simple test to populate a filesystem on one CPU architecture and
fsck on an arch of the opposite byte order produces errors related
to the fragmentation LRU. This occurs because the 64-bit
fragmentation_lru field is not byte-order swapped when reads detect
that the on-disk/bset key values were written in opposite byte-order
of the current CPU.
Update the bch2_alloc_v4 swab callback to handle fragmentation_lru
as is done for other multi-byte fields. This doesn't affect existing
filesystems when accessed by CPUs of the same endianness because the
->swab() callback is only called when the bset flags indicate an
endianness mismatch between the CPU and on-disk data.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
The bcachefs folio writeback code includes a bio full check as well
as a fixed size check to determine when to split off and submit
writeback I/O. The inclusive check of the latter against the limit
means that writeback can submit slightly prematurely. This is not a
functional problem, but results in unnecessarily split I/Os and
extent merging.
This can be observed with a buffered write sized exactly to the
current maximum value (1MB) and with key_merging_disabled=1. The
latter prevents the merge from the second write such that a
subsequent check of the extent list shows a 1020k extent followed by
a contiguous 4k extent.
The purpose for the fixed size check is also undocumented and
somewhat obscure. Lift this check into a new helper that wraps the
bio check, fix the comparison logic, and add a comment to document
the purpose and how we might improve on this in the future.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Guenter Roeck reports a lockdep splat and DEBUG_OBJECTS_WORK related
warning when bch2_copygc_thread() initializes its rhashtable. The
lockdep splat relates to a warning print caused by the fact that the
rhashtable exists on the stack but is not annotated as so. This is
something that could be addressed by INIT_WORK_ONSTACK(), but
rhashtable doesn't expose that control and probably isnt worth the
churn for just one user. Instead, dynamically allocate the
buckets_in_flight structure and avoid the splat that way.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
A recent bug report uncovered a scenario where a filesystem never
runs with freespace_initialized, and therefore the user observes
significantly degraded write performance by virtue of running the
early bucket allocator. The associated bug aside, the primary cause
of the performance drop in this particular instance is that the
early bucket allocator does not update the allocation cursor. This
means that every allocation walks the alloc btree from the first
bucket of the associated device looking for a bucket marked as free
space.
Update the early allocator code to set the alloc cursor to the last
processed position in the tree, similar to how the freelist
allocator behaves. With the alloc_cursor being updated, the retry
logic also needs to be updated to restart from the beginning of the
device when a free bucket is not available between the cursor and
the end of the device. Track the restart position in a first_bucket
variable to make the code a bit more easily readable and consistent
with the freelist allocator.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bcachefs had a transient bug where freespace_initialized was not
properly being set, which lead to unexpected use of the early bucket
allocator at runtime. This issue has been fixed, but the existence
of it uncovered a coherency issue in the early bucket allocation
code that is somewhat related to how uncached iterators deal with
the key cache.
The problem itself manifests as occasional failure of generic/113
due to corruption, often seen as a duplicate backpointer or multiple
data types per-bucket error. The immediate cause of the error is a
racing bucket allocation along the lines of the following sequence:
- Task 1 selects key A in bch2_bucket_alloc_early() and schedules.
- Task 2 selects the same key A, but proceeds to complete the
allocation and associated I/O, after which it releases the
open_bucket.
- Task 1 resumes with key A, but does not recognize the bucket is
now allocated because the open_bucket has been removed
from the hash when it was released in the previous step.
This generally shouldn't happen because the allocating task updates
the alloc btree key before releasing the bucket. This is not
sufficient in this particular instance, however, because an uncached
iterator for a cached btree doesn't actually lock the key cache slot
when no key exists for a given slot in the cache. Thus the fact that
the allocation side updates the cached key means that multiple
uncached iters can stumble across the same alloc key and duplicate
the bucket allocation as described above.
This is something that probably needs a longer term fix in the
iterator code. As a short term fix, close the race through explicit
use of a cached iterator for likely allocation candidates. We don't
want to scan the btree with a cached iterator because that would
unnecessarily pollute the cache. This mitigates cache pollution by
primarily scanning the tree with an uncached iterator, but closes
the race by creating a key cache entry for any prospective slot
prior to the bucket allocation attempt (also similar to how
_alloc_freelist() works via try_alloc_bucket()). This survives many
iterations of generic/113 on a kernel hacked to always use the early
bucket allocator.
Signed-off-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
In this cycle, we introduce a bigger page size support by changing the internal
f2fs's block size aligned to the page size. We also continue to improve zoned
block device support regarding the power off recovery. As usual, there are some
bug fixes regarding the error handling routines in compression and ioctl.
Enhancement:
- Support Block Size == Page Size
- let f2fs_precache_extents() traverses in file range
- stop iterating f2fs_map_block if hole exists
- preload extent_cache for POSIX_FADV_WILLNEED
- compress: fix to avoid fragment w/ OPU during f2fs_ioc_compress_file()
Bug fix:
- do not return EFSCORRUPTED, but try to run online repair
- finish previous checkpoints before returning from remount
- fix error handling of __get_node_page and __f2fs_build_free_nids
- clean up zones when not successfully unmounted
- fix to initialize map.m_pblk in f2fs_precache_extents()
- fix to drop meta_inode's page cache in f2fs_put_super()
- set the default compress_level on ioctl
- fix to avoid use-after-free on dic
- fix to avoid redundant compress extension
- do sanity check on cluster when CONFIG_F2FS_CHECK_FS is on
- fix deadloop in f2fs_write_cache_pages()
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Merge tag 'f2fs-for-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"In this cycle, we introduce a bigger page size support by changing the
internal f2fs's block size aligned to the page size. We also continue
to improve zoned block device support regarding the power off
recovery. As usual, there are some bug fixes regarding the error
handling routines in compression and ioctl.
Enhancements:
- Support Block Size == Page Size
- let f2fs_precache_extents() traverses in file range
- stop iterating f2fs_map_block if hole exists
- preload extent_cache for POSIX_FADV_WILLNEED
- compress: fix to avoid fragment w/ OPU during f2fs_ioc_compress_file()
Bug fixes:
- do not return EFSCORRUPTED, but try to run online repair
- finish previous checkpoints before returning from remount
- fix error handling of __get_node_page and __f2fs_build_free_nids
- clean up zones when not successfully unmounted
- fix to initialize map.m_pblk in f2fs_precache_extents()
- fix to drop meta_inode's page cache in f2fs_put_super()
- set the default compress_level on ioctl
- fix to avoid use-after-free on dic
- fix to avoid redundant compress extension
- do sanity check on cluster when CONFIG_F2FS_CHECK_FS is on
- fix deadloop in f2fs_write_cache_pages()"
* tag 'f2fs-for-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: finish previous checkpoints before returning from remount
f2fs: fix error handling of __get_node_page
f2fs: do not return EFSCORRUPTED, but try to run online repair
f2fs: fix error path of __f2fs_build_free_nids
f2fs: Clean up errors in segment.h
f2fs: clean up zones when not successfully unmounted
f2fs: let f2fs_precache_extents() traverses in file range
f2fs: avoid format-overflow warning
f2fs: fix to initialize map.m_pblk in f2fs_precache_extents()
f2fs: Support Block Size == Page Size
f2fs: stop iterating f2fs_map_block if hole exists
f2fs: preload extent_cache for POSIX_FADV_WILLNEED
f2fs: set the default compress_level on ioctl
f2fs: compress: fix to avoid fragment w/ OPU during f2fs_ioc_compress_file()
f2fs: fix to drop meta_inode's page cache in f2fs_put_super()
f2fs: split initial and dynamic conditions for extent_cache
f2fs: compress: fix to avoid redundant compress extension
f2fs: compress: do sanity check on cluster when CONFIG_F2FS_CHECK_FS is on
f2fs: compress: fix to avoid use-after-free on dic
f2fs: compress: fix deadloop in f2fs_write_cache_pages()
- three W=1 warning fixes: the NULL -> "" replacement isn't trivial
but is serialized identically by the protocol layer and has been tested
- one syzbot/KCSAN datarace annotation where we don't care about users
messing with the fd they passed to mount -t 9p
- removing a declaration without implementation
- yet another race fix for trans_fd around connection close:
the 'err' field is also used in potentially racy calls and this
isn't complete, but it's better than what we have.
- and finally a theorical memory leak fix on serialization failure
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Merge tag '9p-for-6.7-rc1' of https://github.com/martinetd/linux
Pull 9p updates from Dominique Martinet:
A bunch of small fixes:
- three W=1 warning fixes: the NULL -> "" replacement isn't trivial
but is serialized identically by the protocol layer and has been
tested
- one syzbot/KCSAN datarace annotation where we don't care about
users messing with the fd they passed to mount -t 9p
- removing a declaration without implementation
- yet another race fix for trans_fd around connection close: the
'err' field is also used in potentially racy calls and this isn't
complete, but it's better than what we had
- and finally a theorical memory leak fix on serialization failure"
* tag '9p-for-6.7-rc1' of https://github.com/martinetd/linux:
9p/net: fix possible memory leak in p9_check_errors()
9p/fs: add MODULE_DESCRIPTION
9p/net: xen: fix false positive printf format overflow warning
9p: v9fs_listxattr: fix %s null argument warning
9p/trans_fd: Annotate data-racy writes to file::f_flags
fs/9p: Remove unused function declaration v9fs_inode2stat()
9p/trans_fd: avoid sending req to a cancelled conn
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Merge tag '6.7-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client updates from Steve French:
- use after free fixes and deadlock fix
- symlink timestamp fix
- hashing perf improvement
- multichannel fixes
- minor debugging improvements
- fix creating fifos when using "sfu" mounts
- NTLMSSP authentication improvement
- minor fixes to include some missing create flags and structures from
recently updated protocol documentation
* tag '6.7-rc-smb3-client-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6:
cifs: force interface update before a fresh session setup
cifs: do not reset chan_max if multichannel is not supported at mount
cifs: reconnect helper should set reconnect for the right channel
smb: client: fix use-after-free in smb2_query_info_compound()
smb: client: remove extra @chan_count check in __cifs_put_smb_ses()
cifs: add xid to query server interface call
cifs: print server capabilities in DebugData
smb: use crypto_shash_digest() in symlink_hash()
smb: client: fix use-after-free bug in cifs_debug_data_proc_show()
smb: client: fix potential deadlock when releasing mids
smb3: fix creating FIFOs when mounting with "sfu" mount option
Add definition for new smb3.1.1 command type
SMB3: clarify some of the unused CreateOption flags
cifs: Add client version details to NTLM authenticate message
smb3: fix touch -h of symlink
- implement uid/gid mount options for efivarfs
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Merge tag 'efi-next-for-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI update from Ard Biesheuvel:
"This is the only remaining EFI change, as everything else was taken
via -tip this cycle:
- implement uid/gid mount options for efivarfs"
* tag 'efi-next-for-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efivarfs: Add uid/gid mount options
