Shin'ichiro Kawasaki 89d4cca583 btrfs: fix deadlock between quota disable and qgroup rescan worker ... commit e804861bd4 upstream. Quota disable ioctl starts a transaction before waiting for the qgroup rescan worker completes. However, this wait can be infinite and results in deadlock because of circular dependency among the quota disable ioctl, the qgroup rescan worker and the other task with transaction such as block group relocation task. The deadlock happens with the steps following: 1) Task A calls ioctl to disable quota. It starts a transaction and waits for qgroup rescan worker completes. 2) Task B such as block group relocation task starts a transaction and joins to the transaction that task A started. Then task B commits to the transaction. In this commit, task B waits for a commit by task A. 3) Task C as the qgroup rescan worker starts its job and starts a transaction. In this transaction start, task C waits for completion of the transaction that task A started and task B committed. This deadlock was found with fstests test case btrfs/115 and a zoned null_blk device. The test case enables and disables quota, and the block group reclaim was triggered during the quota disable by chance. The deadlock was also observed by running quota enable and disable in parallel with 'btrfs balance' command on regular null_blk devices. An example report of the deadlock: [372.469894] INFO: task kworker/u16:6:103 blocked for more than 122 seconds. [372.479944] Not tainted 5.16.0-rc8 #7 [372.485067] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [372.493898] task:kworker/u16:6 state:D stack: 0 pid: 103 ppid: 2 flags:0x00004000 [372.503285] Workqueue: btrfs-qgroup-rescan btrfs_work_helper [btrfs] [372.510782] Call Trace: [372.514092] <TASK> [372.521684] __schedule+0xb56/0x4850 [372.530104] ? io_schedule_timeout+0x190/0x190 [372.538842] ? lockdep_hardirqs_on+0x7e/0x100 [372.547092] ? _raw_spin_unlock_irqrestore+0x3e/0x60 [372.555591] schedule+0xe0/0x270 [372.561894] btrfs_commit_transaction+0x18bb/0x2610 [btrfs] [372.570506] ? btrfs_apply_pending_changes+0x50/0x50 [btrfs] [372.578875] ? free_unref_page+0x3f2/0x650 [372.585484] ? finish_wait+0x270/0x270 [372.591594] ? release_extent_buffer+0x224/0x420 [btrfs] [372.599264] btrfs_qgroup_rescan_worker+0xc13/0x10c0 [btrfs] [372.607157] ? lock_release+0x3a9/0x6d0 [372.613054] ? btrfs_qgroup_account_extent+0xda0/0xda0 [btrfs] [372.620960] ? do_raw_spin_lock+0x11e/0x250 [372.627137] ? rwlock_bug.part.0+0x90/0x90 [372.633215] ? lock_is_held_type+0xe4/0x140 [372.639404] btrfs_work_helper+0x1ae/0xa90 [btrfs] [372.646268] process_one_work+0x7e9/0x1320 [372.652321] ? lock_release+0x6d0/0x6d0 [372.658081] ? pwq_dec_nr_in_flight+0x230/0x230 [372.664513] ? rwlock_bug.part.0+0x90/0x90 [372.670529] worker_thread+0x59e/0xf90 [372.676172] ? process_one_work+0x1320/0x1320 [372.682440] kthread+0x3b9/0x490 [372.687550] ? _raw_spin_unlock_irq+0x24/0x50 [372.693811] ? set_kthread_struct+0x100/0x100 [372.700052] ret_from_fork+0x22/0x30 [372.705517] </TASK> [372.709747] INFO: task btrfs-transacti:2347 blocked for more than 123 seconds. [372.729827] Not tainted 5.16.0-rc8 #7 [372.745907] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [372.767106] task:btrfs-transacti state:D stack: 0 pid: 2347 ppid: 2 flags:0x00004000 [372.787776] Call Trace: [372.801652] <TASK> [372.812961] __schedule+0xb56/0x4850 [372.830011] ? io_schedule_timeout+0x190/0x190 [372.852547] ? lockdep_hardirqs_on+0x7e/0x100 [372.871761] ? _raw_spin_unlock_irqrestore+0x3e/0x60 [372.886792] schedule+0xe0/0x270 [372.901685] wait_current_trans+0x22c/0x310 [btrfs] [372.919743] ? btrfs_put_transaction+0x3d0/0x3d0 [btrfs] [372.938923] ? finish_wait+0x270/0x270 [372.959085] ? join_transaction+0xc75/0xe30 [btrfs] [372.977706] start_transaction+0x938/0x10a0 [btrfs] [372.997168] transaction_kthread+0x19d/0x3c0 [btrfs] [373.013021] ? btrfs_cleanup_transaction.isra.0+0xfc0/0xfc0 [btrfs] [373.031678] kthread+0x3b9/0x490 [373.047420] ? _raw_spin_unlock_irq+0x24/0x50 [373.064645] ? set_kthread_struct+0x100/0x100 [373.078571] ret_from_fork+0x22/0x30 [373.091197] </TASK> [373.105611] INFO: task btrfs:3145 blocked for more than 123 seconds. [373.114147] Not tainted 5.16.0-rc8 #7 [373.120401] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [373.130393] task:btrfs state:D stack: 0 pid: 3145 ppid: 3141 flags:0x00004000 [373.140998] Call Trace: [373.145501] <TASK> [373.149654] __schedule+0xb56/0x4850 [373.155306] ? io_schedule_timeout+0x190/0x190 [373.161965] ? lockdep_hardirqs_on+0x7e/0x100 [373.168469] ? _raw_spin_unlock_irqrestore+0x3e/0x60 [373.175468] schedule+0xe0/0x270 [373.180814] wait_for_commit+0x104/0x150 [btrfs] [373.187643] ? test_and_set_bit+0x20/0x20 [btrfs] [373.194772] ? kmem_cache_free+0x124/0x550 [373.201191] ? btrfs_put_transaction+0x69/0x3d0 [btrfs] [373.208738] ? finish_wait+0x270/0x270 [373.214704] ? __btrfs_end_transaction+0x347/0x7b0 [btrfs] [373.222342] btrfs_commit_transaction+0x44d/0x2610 [btrfs] [373.230233] ? join_transaction+0x255/0xe30 [btrfs] [373.237334] ? btrfs_record_root_in_trans+0x4d/0x170 [btrfs] [373.245251] ? btrfs_apply_pending_changes+0x50/0x50 [btrfs] [373.253296] relocate_block_group+0x105/0xc20 [btrfs] [373.260533] ? mutex_lock_io_nested+0x1270/0x1270 [373.267516] ? btrfs_wait_nocow_writers+0x85/0x180 [btrfs] [373.275155] ? merge_reloc_roots+0x710/0x710 [btrfs] [373.283602] ? btrfs_wait_ordered_extents+0xd30/0xd30 [btrfs] [373.291934] ? kmem_cache_free+0x124/0x550 [373.298180] btrfs_relocate_block_group+0x35c/0x930 [btrfs] [373.306047] btrfs_relocate_chunk+0x85/0x210 [btrfs] [373.313229] btrfs_balance+0x12f4/0x2d20 [btrfs] [373.320227] ? lock_release+0x3a9/0x6d0 [373.326206] ? btrfs_relocate_chunk+0x210/0x210 [btrfs] [373.333591] ? lock_is_held_type+0xe4/0x140 [373.340031] ? rcu_read_lock_sched_held+0x3f/0x70 [373.346910] btrfs_ioctl_balance+0x548/0x700 [btrfs] [373.354207] btrfs_ioctl+0x7f2/0x71b0 [btrfs] [373.360774] ? lockdep_hardirqs_on_prepare+0x410/0x410 [373.367957] ? lockdep_hardirqs_on_prepare+0x410/0x410 [373.375327] ? btrfs_ioctl_get_supported_features+0x20/0x20 [btrfs] [373.383841] ? find_held_lock+0x2c/0x110 [373.389993] ? lock_release+0x3a9/0x6d0 [373.395828] ? mntput_no_expire+0xf7/0xad0 [373.402083] ? lock_is_held_type+0xe4/0x140 [373.408249] ? vfs_fileattr_set+0x9f0/0x9f0 [373.414486] ? selinux_file_ioctl+0x349/0x4e0 [373.420938] ? trace_raw_output_lock+0xb4/0xe0 [373.427442] ? selinux_inode_getsecctx+0x80/0x80 [373.434224] ? lockdep_hardirqs_on+0x7e/0x100 [373.440660] ? force_qs_rnp+0x2a0/0x6b0 [373.446534] ? lock_is_held_type+0x9b/0x140 [373.452763] ? __blkcg_punt_bio_submit+0x1b0/0x1b0 [373.459732] ? security_file_ioctl+0x50/0x90 [373.466089] __x64_sys_ioctl+0x127/0x190 [373.472022] do_syscall_64+0x3b/0x90 [373.477513] entry_SYSCALL_64_after_hwframe+0x44/0xae [373.484823] RIP: 0033:0x7f8f4af7e2bb [373.490493] RSP: 002b:00007ffcbf936178 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [373.500197] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8f4af7e2bb [373.509451] RDX: 00007ffcbf936220 RSI: 00000000c4009420 RDI: 0000000000000003 [373.518659] RBP: 00007ffcbf93774a R08: 0000000000000013 R09: 00007f8f4b02d4e0 [373.527872] R10: 00007f8f4ae87740 R11: 0000000000000246 R12: 0000000000000001 [373.537222] R13: 00007ffcbf936220 R14: 0000000000000000 R15: 0000000000000002 [373.546506] </TASK> [373.550878] INFO: task btrfs:3146 blocked for more than 123 seconds. [373.559383] Not tainted 5.16.0-rc8 #7 [373.565748] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [373.575748] task:btrfs state:D stack: 0 pid: 3146 ppid: 2168 flags:0x00000000 [373.586314] Call Trace: [373.590846] <TASK> [373.595121] __schedule+0xb56/0x4850 [373.600901] ? __lock_acquire+0x23db/0x5030 [373.607176] ? io_schedule_timeout+0x190/0x190 [373.613954] schedule+0xe0/0x270 [373.619157] schedule_timeout+0x168/0x220 [373.625170] ? usleep_range_state+0x150/0x150 [373.631653] ? mark_held_locks+0x9e/0xe0 [373.637767] ? do_raw_spin_lock+0x11e/0x250 [373.643993] ? lockdep_hardirqs_on_prepare+0x17b/0x410 [373.651267] ? _raw_spin_unlock_irq+0x24/0x50 [373.657677] ? lockdep_hardirqs_on+0x7e/0x100 [373.664103] wait_for_completion+0x163/0x250 [373.670437] ? bit_wait_timeout+0x160/0x160 [373.676585] btrfs_quota_disable+0x176/0x9a0 [btrfs] [373.683979] ? btrfs_quota_enable+0x12f0/0x12f0 [btrfs] [373.691340] ? down_write+0xd0/0x130 [373.696880] ? down_write_killable+0x150/0x150 [373.703352] btrfs_ioctl+0x3945/0x71b0 [btrfs] [373.710061] ? find_held_lock+0x2c/0x110 [373.716192] ? lock_release+0x3a9/0x6d0 [373.722047] ? __handle_mm_fault+0x23cd/0x3050 [373.728486] ? btrfs_ioctl_get_supported_features+0x20/0x20 [btrfs] [373.737032] ? set_pte+0x6a/0x90 [373.742271] ? do_raw_spin_unlock+0x55/0x1f0 [373.748506] ? lock_is_held_type+0xe4/0x140 [373.754792] ? vfs_fileattr_set+0x9f0/0x9f0 [373.761083] ? selinux_file_ioctl+0x349/0x4e0 [373.767521] ? selinux_inode_getsecctx+0x80/0x80 [373.774247] ? __up_read+0x182/0x6e0 [373.780026] ? count_memcg_events.constprop.0+0x46/0x60 [373.787281] ? up_write+0x460/0x460 [373.792932] ? security_file_ioctl+0x50/0x90 [373.799232] __x64_sys_ioctl+0x127/0x190 [373.805237] do_syscall_64+0x3b/0x90 [373.810947] entry_SYSCALL_64_after_hwframe+0x44/0xae [373.818102] RIP: 0033:0x7f1383ea02bb [373.823847] RSP: 002b:00007fffeb4d71f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [373.833641] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1383ea02bb [373.842961] RDX: 00007fffeb4d7210 RSI: 00000000c0109428 RDI: 0000000000000003 [373.852179] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [373.861408] R10: 00007f1383daec78 R11: 0000000000000202 R12: 00007fffeb4d874a [373.870647] R13: 0000000000493099 R14: 0000000000000001 R15: 0000000000000000 [373.879838] </TASK> [373.884018] Showing all locks held in the system: [373.894250] 3 locks held by kworker/4:1/58: [373.900356] 1 lock held by khungtaskd/63: [373.906333] #0: ffffffff8945ff60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [373.917307] 3 locks held by kworker/u16:6/103: [373.923938] #0: ffff888127b4f138 ((wq_completion)btrfs-qgroup-rescan){+.+.}-{0:0}, at: process_one_work+0x712/0x1320 [373.936555] #1: ffff88810b817dd8 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x73f/0x1320 [373.951109] #2: ffff888102dd4650 (sb_internal#2){.+.+}-{0:0}, at: btrfs_qgroup_rescan_worker+0x1f6/0x10c0 [btrfs] [373.964027] 2 locks held by less/1803: [373.969982] #0: ffff88813ed56098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [373.981295] #1: ffffc90000b3b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x9e2/0x1060 [373.992969] 1 lock held by btrfs-transacti/2347: [373.999893] #0: ffff88813d4887a8 (&fs_info->transaction_kthread_mutex){+.+.}-{3:3}, at: transaction_kthread+0xe3/0x3c0 [btrfs] [374.015872] 3 locks held by btrfs/3145: [374.022298] #0: ffff888102dd4460 (sb_writers#18){.+.+}-{0:0}, at: btrfs_ioctl_balance+0xc3/0x700 [btrfs] [374.034456] #1: ffff88813d48a0a0 (&fs_info->reclaim_bgs_lock){+.+.}-{3:3}, at: btrfs_balance+0xfe5/0x2d20 [btrfs] [374.047646] #2: ffff88813d488838 (&fs_info->cleaner_mutex){+.+.}-{3:3}, at: btrfs_relocate_block_group+0x354/0x930 [btrfs] [374.063295] 4 locks held by btrfs/3146: [374.069647] #0: ffff888102dd4460 (sb_writers#18){.+.+}-{0:0}, at: btrfs_ioctl+0x38b1/0x71b0 [btrfs] [374.081601] #1: ffff88813d488bb8 (&fs_info->subvol_sem){+.+.}-{3:3}, at: btrfs_ioctl+0x38fd/0x71b0 [btrfs] [374.094283] #2: ffff888102dd4650 (sb_internal#2){.+.+}-{0:0}, at: btrfs_quota_disable+0xc8/0x9a0 [btrfs] [374.106885] #3: ffff88813d489800 (&fs_info->qgroup_ioctl_lock){+.+.}-{3:3}, at: btrfs_quota_disable+0xd5/0x9a0 [btrfs] [374.126780] ============================================= To avoid the deadlock, wait for the qgroup rescan worker to complete before starting the transaction for the quota disable ioctl. Clear BTRFS_FS_QUOTA_ENABLE flag before the wait and the transaction to request the worker to complete. On transaction start failure, set the BTRFS_FS_QUOTA_ENABLE flag again. These BTRFS_FS_QUOTA_ENABLE flag changes can be done safely since the function btrfs_quota_disable is not called concurrently because of fs_info->subvol_sem. Also check the BTRFS_FS_QUOTA_ENABLE flag in qgroup_rescan_init to avoid another qgroup rescan worker to start after the previous qgroup worker completed. CC: stable@vger.kernel.org # 5.4+ Suggested-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-08 18:34:04 +01:00
..
9p	9p: only copy valid iattrs in 9P2000.L setattr implementation	2022-01-20 09:13:14 +01:00
adfs	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
affs	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
afs	afs: Fix mmap	2021-12-22 09:32:45 +01:00
autofs	autofs: fix wait name hash calculation in autofs_wait()	2021-10-20 21:09:02 -04:00
befs	isystem: ship and use stdarg.h	2021-08-19 09:02:55 +09:00
bfs	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
btrfs	btrfs: fix deadlock between quota disable and qgroup rescan worker	2022-02-08 18:34:04 +01:00
cachefiles	cachefiles: Change %p in format strings to something else	2021-08-27 13:34:02 +01:00
ceph	ceph: put the requests/sessions when it fails to alloc memory	2022-02-01 17:27:14 +01:00
cifs	cifs: sanitize multiple delimiters in prepath	2021-12-22 09:32:48 +01:00
coda
configfs	fsnotify: fix fsnotify hooks in pseudo filesystems	2022-02-01 17:27:01 +01:00
cramfs
crypto	fscrypt: allow 256-bit master keys with AES-256-XTS	2021-11-18 19:16:11 +01:00
debugfs	debugfs: lockdown: Allow reading debugfs files that are not world readable	2022-01-27 11:03:55 +01:00
devpts	fsnotify: fix fsnotify hooks in pseudo filesystems	2022-02-01 17:27:01 +01:00
dlm	fs: dlm: filter user dlm messages for kernel locks	2022-01-27 11:04:23 +01:00
ecryptfs	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
efivarfs
efs
erofs	erofs: fix deadlock when shrink erofs slab	2021-12-01 09:04:50 +01:00
exfat	exfat: fix incorrect loading of i_blocks for large files	2021-11-18 19:15:52 +01:00
exportfs
ext2	ext2: fix sleeping in atomic bugs on error	2021-09-22 13:05:23 +02:00
ext4	ext4: don't use the orphan list when migrating an inode	2022-01-27 11:05:18 +01:00
f2fs	f2fs: fix to check available space of CP area correctly in update_ckpt_flags()	2022-01-27 11:05:30 +01:00
fat	linux-kselftest-kunit-5.15-rc1	2021-09-02 12:32:12 -07:00
freevxfs
fscache	fscache: Remove an unused static variable	2021-10-04 22:13:12 +01:00
fuse	fuse: Pass correct lend value to filemap_write_and_wait_range()	2022-01-27 11:05:08 +01:00
gfs2	gfs2: Fix length of holes reported at end-of-file	2021-12-08 09:04:37 +01:00
hfs	hfs: add lock nesting notation to hfs_find_init	2021-07-15 10:13:49 -07:00
hfsplus	hfsplus: report create_date to kstat.btime	2021-07-01 11:06:06 -07:00
hostfs	hostfs: support splice_write	2021-08-26 22:28:02 +02:00
hpfs	hpfs: use iomap_fiemap to implement ->fiemap	2021-07-27 11:00:36 +02:00
hugetlbfs	hugetlbfs: fix mount mode command line processing	2021-07-23 17:43:28 -07:00
iomap	iomap: Fix inline extent handling in iomap_readpage	2021-12-01 09:04:44 +01:00
isofs	isofs: Fix out of bound access for corrupted isofs image	2021-11-12 15:05:50 +01:00
jbd2	jbd2: export jbd2_journal_[grab|put]_journal_head	2022-02-01 17:27:05 +01:00
jffs2	jffs2: GC deadlock reading a page that is used in jffs2_write_begin()	2022-01-27 11:04:49 +01:00
jfs	JFS: fix memleak in jfs_mount	2021-11-18 19:16:48 +01:00
kernfs	kernfs: don't create a negative dentry if inactive node exists	2021-10-04 10:27:18 +02:00
ksmbd	ksmbd: add reserved room in ipc request/response	2022-01-27 11:02:53 +01:00
lockd	lockd: fix failure to cleanup client locks	2022-02-05 12:38:57 +01:00
minix	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
netfs	netfs: fix parameter of cleanup()	2021-12-29 12:28:59 +01:00
nfs	NFS: Ensure the server has an up to date ctime before renaming	2022-02-01 17:27:09 +01:00
nfs_common	nfs: Fix kerneldoc warning shown up by W=1	2021-10-04 22:02:17 +01:00
nfsd	fsnotify: fix fsnotify hooks in pseudo filesystems	2022-02-01 17:27:01 +01:00
nilfs2	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
nls
notify	fanotify: Fix stale file descriptor in copy_event_to_user()	2022-02-05 12:38:59 +01:00
ntfs	Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2021-07-03 11:30:04 -07:00
ntfs3	Fixed xfstests generic/016 generic/021 generic/022 generic/041 generic/274 generic/423,	2021-10-15 09:58:11 -04:00
ocfs2	ocfs2: fix a deadlock when commit trans	2022-02-01 17:27:05 +01:00
omfs	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
openpromfs
orangefs	orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc()	2022-01-20 09:13:13 +01:00
overlayfs	ovl: fix NULL pointer dereference in copy up warning	2022-02-05 12:38:59 +01:00
proc	proc/vmcore: fix clearing user buffer by properly using clear_user()	2021-12-01 09:04:44 +01:00
pstore	pstore/blk: Use "%lu" to format unsigned long	2021-11-25 09:48:42 +01:00
qnx4	qnx4: work around gcc false positive warning bug	2021-09-21 08:36:48 -07:00
qnx6
quota	quota: correct error number in free_dqentry()	2021-11-18 19:16:05 +01:00
ramfs	fs: move ramfs_aops to libfs	2021-06-29 10:53:48 -07:00
reiserfs	Kbuild updates for v5.15	2021-09-03 15:33:47 -07:00
romfs
smbfs_common	cifs: Fix crash on unload of cifs_arc4.ko	2021-12-14 10:57:12 +01:00
squashfs	squashfs: use bvec_virt	2021-08-16 10:50:32 -06:00
sysfs	sysfs: Allow deferred execution of iomem_get_mapping()	2021-08-06 13:05:28 +02:00
sysv	mm: require ->set_page_dirty to be explicitly wired up	2021-06-29 10:53:48 -07:00
tracefs	tracefs: Set all files to the same group ownership as the mount option	2021-12-14 10:57:15 +01:00
ubifs	ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers	2022-01-27 11:05:07 +01:00
udf	udf: Fix NULL ptr deref when converting from inline format	2022-02-01 17:27:00 +01:00
ufs	isystem: ship and use stdarg.h	2021-08-19 09:02:55 +09:00
unicode
vboxsf	vboxfs: fix broken legacy mount signature checking	2021-09-27 11:26:21 -07:00
verity	fs-verity: fix signed integer overflow with i_size near S64_MAX	2021-09-22 10:56:34 -07:00
xfs	xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate	2022-01-11 15:35:16 +01:00
zonefs	zonefs: add MODULE_ALIAS_FS	2021-12-22 09:32:48 +01:00
aio.c	aio: Fix incorrect usage of eventfd_signal_allowed()	2021-12-14 10:57:22 +01:00
anon_inodes.c
attr.c	fs: handle circular mappings correctly	2021-11-25 09:48:46 +01:00
bad_inode.c	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
binfmt_aout.c	binfmt: a.out: Fix bogus semicolon	2021-09-05 10:15:05 -07:00
binfmt_elf.c	elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings	2021-10-03 14:02:58 -07:00
binfmt_elf_fdpic.c	binfmt: remove in-tree usage of MAP_DENYWRITE	2021-09-03 18:42:01 +02:00
binfmt_flat.c	binfmt: remove in-tree usage of MAP_EXECUTABLE	2021-06-29 10:53:50 -07:00
binfmt_misc.c
binfmt_script.c
buffer.c	mm: fs: invalidate bh_lrus for only cold path	2021-09-24 16:13:35 -07:00
char_dev.c
compat_binfmt_elf.c
coredump.c	coredump: fix memleak in dump_vma_snapshot()	2021-09-08 11:50:27 -07:00
d_path.c	d_path: make 'prepend()' fill up the buffer exactly on overflow	2021-09-02 10:07:29 -07:00
dax.c	New code for 5.15:	2021-08-31 11:13:35 -07:00
dcache.c
direct-io.c
drop_caches.c	fs: drop_caches: fix skipping over shadow cache inodes	2021-09-03 09:58:10 -07:00
eventfd.c	eventfd: Export eventfd_wake_count to modules	2021-09-06 07:20:56 -04:00
eventpoll.c	ARM development updates for 5.15:	2021-09-09 13:25:49 -07:00
exec.c	signal: Replace force_sigsegv(SIGSEGV) with force_fatal_sig(SIGSEGV)	2021-11-25 09:49:06 +01:00
fcntl.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
fhandle.c
file.c	fget: clarify and improve __fget_files() implementation	2022-01-16 09:12:42 +01:00
file_table.c
filesystems.c	fs: simplify get_filesystem_list / get_all_fs_names	2021-08-23 01:25:40 -04:00
fs-writeback.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
fs_context.c	vfs: fs_context: fix up param length parsing in legacy_parse_param	2022-01-20 09:13:14 +01:00
fs_parser.c	namei: Standardize callers of filename_lookup()	2021-09-07 16:07:47 -04:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c
inode.c	fs: export an inode_update_time helper	2021-11-25 09:49:08 +01:00
internal.h	block: move fs/block_dev.c to block/bdev.c	2021-09-07 08:39:40 -06:00
io-wq.c	io-wq: drop wqe lock before creating new worker	2021-12-22 09:32:51 +01:00
io-wq.h	io-wq: provide a way to limit max number of workers	2021-08-29 07:55:55 -06:00
io_uring.c	io_uring: fix bug in slow unregistering of nodes	2022-02-01 17:27:11 +01:00
ioctl.c	New code for 5.15:	2021-08-31 11:06:32 -07:00
Kconfig	4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate	2021-09-12 10:10:21 -07:00
Kconfig.binfmt	binfmt: remove support for em86 (alpha only)	2021-07-25 22:33:03 -07:00
kernel_read_file.c	vfs: check fd has read access in kernel_read_file_from_fd()	2021-10-18 20:22:03 -10:00
libfs.c	fs: remove noop_set_page_dirty()	2021-06-29 10:53:48 -07:00
locks.c	Revert "memcg: enable accounting for file lock caches"	2021-09-07 11:21:48 -07:00
Makefile	4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate	2021-09-12 10:10:21 -07:00
mbcache.c
mount.h
mpage.c
namei.c	fsnotify: invalidate dcache before IN_DELETE event	2022-02-01 17:27:15 +01:00
namespace.c	fs/mount_setattr: always cleanup mount_kattr	2022-01-05 12:42:39 +01:00
no-block.c
nsfs.c
open.c	mm, thp: fix incorrect unmap behavior for private pages	2021-11-18 19:17:17 +01:00
pipe.c	Revert "mm/gup: remove try_get_page(), call try_get_compound_head() directly"	2021-09-07 11:03:45 -07:00
pnode.c
pnode.h
posix_acl.c	ovl: enable RCU'd ->get_acl()	2021-08-18 22:08:24 +02:00
proc_namespace.c
read_write.c	fs: clean up after mandatory file locking support removal	2021-08-24 07:52:45 -04:00
readdir.c
remap_range.c	fs: remove mandatory file locking support	2021-08-23 06:15:36 -04:00
select.c	select: Fix indefinitely sleeping task in poll_schedule_timeout()	2022-01-29 10:58:25 +01:00
seq_file.c	seq_file: disallow extremely large seq buffer allocations	2021-07-19 17:18:48 -07:00
signalfd.c	signalfd: use wake_up_pollfree()	2021-12-14 10:57:15 +01:00
splice.c
stack.c
stat.c	fs: add generic helper for filling statx attribute flags	2021-08-17 11:47:43 +02:00
statfs.c
super.c	devtmpfs regression fix: reconfigure on each mount	2022-01-20 09:13:13 +01:00
sync.c
timerfd.c	timerfd: Provide timerfd_resume()	2021-08-10 17:57:22 +02:00
userfaultfd.c	userfaultfd: fix a race between writeprotect and exit_mmap()	2021-10-18 20:22:02 -10:00
utimes.c
xattr.c