Kaiwen Hu 887366faf0 btrfs: prevent subvol with swapfile from being deleted ... commit 60021bd754 upstream. A subvolume with an active swapfile must not be deleted otherwise it would not be possible to deactivate it. After the subvolume is deleted, we cannot swapoff the swapfile in this deleted subvolume because the path is unreachable. The swapfile is still active and holding references, the filesystem cannot be unmounted. The test looks like this: mkfs.btrfs -f $dev > /dev/null mount $dev $mnt btrfs sub create $mnt/subvol touch $mnt/subvol/swapfile chmod 600 $mnt/subvol/swapfile chattr +C $mnt/subvol/swapfile dd if=/dev/zero of=$mnt/subvol/swapfile bs=1K count=4096 mkswap $mnt/subvol/swapfile swapon $mnt/subvol/swapfile btrfs sub delete $mnt/subvol swapoff $mnt/subvol/swapfile # failed: No such file or directory swapoff --all unmount $mnt # target is busy. To prevent above issue, we simply check that whether the subvolume contains any active swapfile, and stop the deleting process. This behavior is like snapshot ioctl dealing with a swapfile. CC: stable@vger.kernel.org # 5.4+ Reviewed-by: Robbie Ko <robbieko@synology.com> Reviewed-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: Kaiwen Hu <kevinhu@synology.com> Signed-off-by: David Sterba <dsterba@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-04-13 20:59:23 +02:00
..
9p	Revert "fs/9p: search open fids first"	2022-02-08 18:34:04 +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: prevent subvol with swapfile from being deleted	2022-04-13 20:59:23 +02:00
cachefiles	cachefiles: Change %p in format strings to something else	2021-08-27 13:34:02 +01:00
ceph	ceph: fix memory leak in ceph_readdir when note_last_dentry returns error	2022-04-13 20:59:10 +02:00
cifs	Adjust cifssb maximum read size	2022-04-08 14:23:58 +02:00
coda
configfs	configfs: fix a race in configfs_{,un}register_subsystem()	2022-03-02 11:48:02 +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 i_blocks for files truncated over 4 GiB	2022-03-08 19:12:32 +01:00
exportfs
ext2	ext2: correct max file size computing	2022-04-08 14:23:35 +02:00
ext4	ext4: don't BUG if someone dirty pages without asking ext4 first	2022-04-08 14:23:57 +02:00
f2fs	f2fs: compress: fix to print raw data size in error path of lz4 decompression	2022-04-08 14:23:58 +02:00
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: fix pipe buffer lifetime for direct_io	2022-03-16 14:23:42 +01:00
gfs2	gfs2: Make sure FITRIM minlen is rounded up to fs block size	2022-04-08 14:24:10 +02:00
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 off-by-one error in hugetlb_vmdelete_list()	2022-03-08 19:12:38 +01:00
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	ext4: fast commit may not fallback for ineligible commit	2022-03-08 19:12:32 +01:00
jffs2	jffs2: fix memory leak in jffs2_scan_medium	2022-04-08 14:22:53 +02:00
jfs	jfs: prevent NULL deref in diFree	2022-04-13 20:59:13 +02:00
kernfs	kernfs: don't create a negative dentry if inactive node exists	2021-10-04 10:27:18 +02:00
ksmbd	ksmbd: don't align last entry offset in smb2 query directory	2022-02-23 12:03:18 +01:00
lockd	lockd: fix failure to cleanup client locks	2022-02-05 12:38:57 +01:00
minix	minix: fix bug when opening a file with O_DIRECT	2022-04-13 20:59:10 +02:00
netfs	netfs: fix parameter of cleanup()	2021-12-29 12:28:59 +01:00
nfs	NFSv4: fix open failure with O_ACCMODE flag	2022-04-13 20:59:15 +02:00
nfs_common	nfs: Fix kerneldoc warning shown up by W=1	2021-10-04 22:02:17 +01:00
nfsd	NFSD: Fix nfsd_breaker_owns_lease() return values	2022-04-08 14:23:57 +02:00
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	ntfs: add sanity check on allocation size	2022-04-08 14:23:58 +02:00
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 crash when mount with quota enabled	2022-04-08 14:22:56 +02:00
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: bootconfig: Add null pointer check	2022-04-08 14:24:12 +02:00
pstore	pstore: Don't use semaphores in always-atomic-context code	2022-04-08 14:23:01 +02:00
qnx4	qnx4: work around gcc false positive warning bug	2021-09-21 08:36:48 -07:00
qnx6
quota	quota: make dquot_quota_sync return errors from ->sync_fs	2022-02-23 12:03:06 +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 the group ownership in apply_options() not parse_options()	2022-03-02 11:48:05 +01:00
ubifs	ubifs: rename_whiteout: correct old_dir size computing	2022-04-08 14:24:08 +02:00
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_fdpic.c	coredump: Snapshot the vmas in do_coredump	2022-04-08 14:24:17 +02:00
binfmt_elf.c	coredump: Use the vma snapshot in fill_files_note	2022-04-08 14:24:18 +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: fix lru_cache_disabled race in bh_lru	2022-04-08 14:22:54 +02:00
char_dev.c
compat_binfmt_elf.c
coredump.c	coredump: Use the vma snapshot in fill_files_note	2022-04-08 14:24:18 +02:00
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	exec: Force single empty string when argv is empty	2022-04-08 14:23:01 +02:00
fcntl.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
fhandle.c
file_table.c
file.c	fs: fix fd table size alignment properly	2022-04-08 14:23:54 +02:00
filesystems.c	fs: simplify get_filesystem_list / get_all_fs_names	2021-08-23 01:25:40 -04:00
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
fs-writeback.c	Merge branch 'akpm' (patches from Andrew)	2021-09-03 10:08:28 -07:00
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_uring.c	io_uring: fix race between timeout flush and removal	2022-04-13 20:59:22 +02:00
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
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	watch_queue: Fix lack of barrier/sync/lock between post and read	2022-03-16 14:23:44 +01:00
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	vfs: make freeze_super abort when sync_filesystem returns error	2022-02-23 12:03:05 +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