Dave Chinner c4d5660afb xfs: active perag reference counting ... We need to be able to dynamically remove instantiated AGs from memory safely, either for shrinking the filesystem or paging AG state in and out of memory (e.g. supporting millions of AGs). This means we need to be able to safely exclude operations from accessing perags while dynamic removal is in progress. To do this, introduce the concept of active and passive references. Active references are required for high level operations that make use of an AG for a given operation (e.g. allocation) and pin the perag in memory for the duration of the operation that is operating on the perag (e.g. transaction scope). This means we can fail to get an active reference to an AG, hence callers of the new active reference API must be able to handle lookup failure gracefully. Passive references are used in low level code, where we might need to access the perag structure for the purposes of completing high level operations. For example, buffers need to use passive references because: - we need to be able to do metadata IO during operations like grow and shrink transactions where high level active references to the AG have already been blocked - buffers need to pin the perag until they are reclaimed from memory, something that high level code has no direct control over. - unused cached buffers should not prevent a shrink from being started. Hence we have active references that will form exclusion barriers for operations to be performed on an AG, and passive references that will prevent reclaim of the perag until all objects with passive references have been reclaimed themselves. This patch introduce xfs_perag_grab()/xfs_perag_rele() as the API for active AG reference functionality. We also need to convert the for_each_perag*() iterators to use active references, which will start the process of converting high level code over to using active references. Conversion of non-iterator based code to active references will be done in followup patches. Note that the implementation using reference counting is really just a development vehicle for the API to ensure we don't have any leaks in the callers. Once we need to remove perag structures from memory dyanmically, we will need a much more robust per-ag state transition mechanism for preventing new references from being taken while we wait for existing references to drain before removal from memory can occur.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org>		2023-02-13 09:14:42 +11:00
..
9p	9p-for-6.2-rc1	2022-12-23 11:39:18 -08:00
adfs	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
affs	affs: initialize fsdata in affs_truncate()	2023-01-10 14:55:20 +01:00
afs	rxrpc: Move call state changes from recvmsg to I/O thread	2023-01-06 09:43:33 +00:00
autofs	autofs: remove unused ino field inode	2022-07-17 17:31:42 -07:00
befs	befs: Convert befs_symlink_read_folio() to use a folio	2022-08-02 12:34:03 -04:00
bfs	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
btrfs	for-6.2-rc4-tag	2023-01-20 11:59:01 -08:00
cachefiles	fscache,cachefiles: add prepare_ondemand_read() callback	2022-12-07 10:56:29 +08:00
ceph	ceph: avoid use-after-free in ceph_fl_release_lock()	2023-01-02 12:27:25 +01:00
cifs	cifs: Fix oops due to uncleared server->smbd_conn in reconnect	2023-01-25 09:57:48 -06:00
coda	coda: Convert coda_symlink_filler() to use a folio	2022-08-02 12:34:03 -04:00
configfs	configfs: fix possible memory leak in configfs_create_dir()	2022-12-02 11:11:22 +01:00
cramfs	cramfs: read_mapping_page() is synchronous	2022-08-02 12:34:02 -04:00
crypto	for-6.2/block-2022-12-08	2022-12-13 10:43:59 -08:00
debugfs	debugfs: fix error when writing negative value to atomic_t debugfs file	2022-11-30 16:13:16 -08:00
devpts
dlm	Treewide: Stop corrupting socket's task_frag	2022-12-19 17:28:49 -08:00
ecryptfs	ecryptfs: use stub posix acl handlers	2022-10-20 10:13:31 +02:00
efivarfs	efi: vars: prohibit reading random seed variables	2022-12-01 09:51:21 +01:00
efs	efs: Convert efs symlinks to read_folio	2022-05-09 16:21:45 -04:00
erofs	erofs: clean up parsing of fscache related options	2023-01-16 22:39:47 +08:00
exfat	Description for this pull request:	2022-12-15 18:14:21 -08:00
exportfs	exportfs: use pr_debug for unreachable debug statements	2022-11-28 12:54:45 -05:00
ext2	\n	2022-12-12 20:32:50 -08:00
ext4	ext4: make xattr char unsignedness in hash explicit	2023-01-24 12:38:45 -08:00
f2fs	f2fs: let's avoid panic if extent_tree is not created	2023-01-03 08:59:06 -08:00
fat	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
freevxfs	freevxfs: Convert vxfs_immed_read_folio() to use a folio	2022-08-02 12:34:03 -04:00
fscache	iov_iter work; most of that is about getting rid of	2022-12-12 18:29:54 -08:00
fuse	fuse: fixes after adapting to new posix acl api	2023-01-24 16:33:37 +01:00
gfs2	Revert "gfs2: stop using generic_writepages in gfs2_ail1_start_one"	2023-01-22 09:46:14 +01:00
hfs	hfs/hfsplus: avoid WARN_ON() for sanity check, use proper error handling	2023-01-06 14:09:13 -08:00
hfsplus	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
hostfs	hostfs: move from strlcpy with unused retval to strscpy	2022-09-19 22:46:25 +02:00
hpfs	hpfs: remove ->writepage	2022-12-11 18:12:18 -08:00
hugetlbfs	hugetlbfs: inode: remove unnecessary (void*) conversions	2022-11-30 15:58:56 -08:00
iomap	New XFS code for 6.2:	2022-12-14 10:11:51 -08:00
isofs	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
jbd2	jbd2: switch jbd2_submit_inode_data() to use fs-provided hook for data writeout	2022-12-08 21:49:25 -05:00
jffs2	fs: rename current get acl method	2022-10-20 10:13:27 +02:00
jfs	MM patches for 6.2-rc1.	2022-12-13 19:29:45 -08:00
kernfs	kernfs: fix all kernel-doc warnings and multiple typos	2022-11-23 19:28:26 +01:00
ksmbd	ksmbd: downgrade ndr version error message to debug	2023-01-25 18:31:18 -06:00
lockd	NFSD 6.2 Release Notes	2022-12-12 20:54:39 -08:00
minix	vfs: open inside ->tmpfile()	2022-09-24 07:00:00 +02:00
netfs	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
nfs	NFS client fixes for Linux 6.2	2023-01-07 10:38:11 -08:00
nfs_common
nfsd	nfsd-6.2 fixes:	2023-01-24 12:58:47 -08:00
nilfs2	nilfs2: fix general protection fault in nilfs_btree_insert()	2023-01-11 16:14:21 -08:00
nls
notify	Merge tag 'fsnotify-for_v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2022-10-07 08:28:50 -07:00
ntfs	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
ntfs3	fs/ntfs3: don't hold ni_lock when calling truncate_setsize()	2023-01-02 10:31:09 -08:00
ocfs2	Treewide: Stop corrupting socket's task_frag	2022-12-19 17:28:49 -08:00
omfs	omfs: remove ->writepage	2022-12-11 18:12:18 -08:00
openpromfs	fs: allocate inode by using alloc_inode_sb()	2022-03-22 15:57:03 -07:00
orangefs	orangefs: four fixes from Zhang Xiaoxu and two from Colin Ian King	2022-12-14 11:16:33 -08:00
overlayfs	ovl: fail on invalid uid/gid mapping at copy up	2023-01-27 16:17:19 +01:00
proc	ARM64:	2022-12-15 11:12:21 -08:00
pstore	pstore updates for v6.2-rc1-fixes	2022-12-23 11:55:54 -08:00
qnx4	fs: Convert block_read_full_page() to block_read_full_folio()	2022-05-09 16:21:44 -04:00
qnx6	fs/qnx6: delete unnecessary checks before brelse()	2022-09-11 21:55:07 -07:00
quota	ext4: fix bug_on in __es_tree_search caused by bad quota inode	2022-12-08 21:49:23 -05:00
ramfs	tmpfile API change	2022-10-10 19:45:17 -07:00
reiserfs	lsm/stable-6.2 PR 20221212	2022-12-13 09:47:48 -08:00
romfs	romfs: Convert romfs to read_folio	2022-05-09 16:21:46 -04:00
smbfs_common	smb3: define missing create contexts	2022-10-05 01:55:27 -05:00
squashfs	fs.idmapped.squashfs.v6.2	2022-12-12 20:24:51 -08:00
sysfs	kobject: kobj_type: remove default_attrs	2022-04-05 15:39:19 +02:00
sysv	fs: sysv: Fix sysv_nblocks() returns wrong value	2022-12-10 14:13:37 -05:00
tracefs	tracefs: Only clobber mode/uid/gid on remount if asked	2022-09-08 17:10:54 -04:00
ubifs	treewide: use get_random_u32_below() instead of deprecated function	2022-11-18 02:15:15 +01:00
udf	udf: initialize newblock to 0	2023-01-06 15:44:32 +01:00
ufs	ufs: replace ll_rw_block()	2022-09-11 20:26:07 -07:00
unicode
vboxsf	vboxsf: Convert vboxsf to read_folio	2022-05-09 16:21:46 -04:00
verity	fsverity: simplify fsverity_get_digest()	2022-11-29 21:07:41 -08:00
xfs	xfs: active perag reference counting	2023-02-13 09:14:42 +11:00
zonefs	zonefs: Detect append writes at invalid locations	2023-01-16 08:42:12 +09:00
aio.c	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
anon_inodes.c	dynamic_dname(): drop unused dentry argument	2022-08-20 11:34:04 -04:00
attr.c	attr: use consistent sgid stripping checks	2022-10-18 10:09:47 +02:00
bad_inode.c	fs: rename current get acl method	2022-10-20 10:13:27 +02:00
binfmt_elf_fdpic.c	elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size}	2023-01-05 15:12:12 +00:00
binfmt_elf_test.c
binfmt_elf.c	elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size}	2023-01-05 15:12:12 +00:00
binfmt_flat.c	binfmt_flat: Remove shared library support	2022-04-22 10:57:18 -07:00
binfmt_misc.c	binfmt_misc: fix shift-out-of-bounds in check_special_flags	2022-12-02 13:57:04 -08:00
binfmt_script.c	Merge branch 'akpm' (patches from Andrew)	2020-06-04 19:18:29 -07:00
buffer.c	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
char_dev.c	chardev: fix error handling in cdev_device_add()	2022-12-02 17:48:59 +01:00
compat_binfmt_elf.c
coredump.c	hardening updates for v6.2-rc1	2022-12-14 12:20:00 -08:00
d_path.c	d_path.c: typo fix...	2022-08-20 11:34:33 -04:00
dax.c	fsdax,xfs: port unshare to fsdax	2022-12-11 18:12:17 -08:00
dcache.c	tmpfile API change	2022-10-10 19:45:17 -07:00
direct-io.c	block: remove PSI accounting from the bio layer	2022-09-20 08:24:38 -06:00
drop_caches.c
eventfd.c	eventfd: provide a eventfd_signal_mask() helper	2022-11-22 06:07:55 -07:00
eventpoll.c	eventpoll: add EPOLL_URING_WAKE poll wakeup flag	2022-11-21 07:45:29 -07:00
exec.c	fs.vfsuid.conversion.v6.2	2022-12-12 19:20:05 -08:00
fcntl.c	keep iocb_flags() result cached in struct file	2022-06-10 16:10:23 -04:00
fhandle.c	do_sys_name_to_handle(): constify path	2022-09-01 17:36:39 -04:00
file_table.c	locks: fix TOCTOU race when granting write lease	2022-08-16 10:59:54 -04:00
file.c	fs: use acquire ordering in __fget_light()	2022-10-31 15:30:11 -04:00
filesystems.c
fs_context.c
fs_parser.c	ext4: journal_path mount options should follow links	2022-12-01 10:46:54 -05:00
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c	for-6.2/writeback-2022-12-12	2022-12-15 18:09:48 -08:00
fsopen.c	uninline may_mount() and don't opencode it in fspick(2)/fsopen(2)	2022-05-19 23:25:10 -04:00
init.c
inode.c	fs.vfsuid.conversion.v6.2	2022-12-12 19:20:05 -08:00
internal.h	fs.ovl.setgid.v6.2	2022-12-12 19:03:10 -08:00
ioctl.c	Fixes for 5.18-rc1:	2022-04-01 19:35:56 -07:00
Kconfig	hugetlb: make hugetlb depends on SYSFS or SYSCTL	2022-09-11 20:26:10 -07:00
Kconfig.binfmt	Xtensa updates for v6.1	2022-10-10 14:21:11 -07:00
kernel_read_file.c	fs/kernel_read_file: allow to read files up-to ssize_t	2022-06-16 19:58:21 -07:00
libfs.c	libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value	2022-11-30 16:13:16 -08:00
locks.c	Add process name and pid to locks warning	2022-11-30 05:08:10 -05:00
Makefile	a.out: Remove the a.out implementation	2022-09-27 07:11:02 -07:00
mbcache.c	ext4: fix deadlock due to mbcache entry corruption	2022-12-08 21:49:25 -05:00
mount.h	switch try_to_unlazy_next() to __legitimize_mnt()	2022-07-05 16:18:21 -04:00
mpage.c	Folio changes for 6.0	2022-08-03 10:35:43 -07:00
namei.c	Landlock updates for v6.2-rc1	2022-12-13 09:14:50 -08:00
namespace.c	fs.idmapped.mnt_idmap.v6.2	2022-12-12 19:30:18 -08:00
no-block.c
nsfs.c	dynamic_dname(): drop unused dentry argument	2022-08-20 11:34:04 -04:00
open.c	Landlock updates for v6.2-rc1	2022-12-13 09:14:50 -08:00
pipe.c	dynamic_dname(): drop unused dentry argument	2022-08-20 11:34:04 -04:00
pnode.c	pnode: terminate at peers of source	2022-12-21 14:45:25 +01:00
pnode.h
posix_acl.c	fs.idmapped.mnt_idmap.v6.2	2022-12-12 19:30:18 -08:00
proc_namespace.c	vfs: escape hash as well	2022-06-28 13:58:05 -04:00
read_write.c	iov_iter work; most of that is about getting rid of	2022-12-12 18:29:54 -08:00
readdir.c	Change calling conventions for filldir_t	2022-08-17 17:25:04 -04:00
remap_range.c	New VFS code for 6.2:	2022-12-13 10:26:38 -08:00
select.c
seq_file.c	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
signalfd.c
splice.c	use less confusing names for iov_iter direction initializers	2022-11-25 13:01:55 -05:00
stack.c
stat.c	fs: use type safe idmapping helpers	2022-10-26 10:02:34 +02:00
statfs.c
super.c	misc pile	2022-12-12 18:38:47 -08:00
sync.c	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
sysctls.c
timerfd.c
userfaultfd.c	mm/userfaultfd: enable writenotify while userfaultfd-wp is enabled for a VMA	2023-01-11 16:14:20 -08:00
utimes.c
xattr.c	fs.xattr.simple.rework.rbtree.rwlock.v6.2	2022-12-13 10:08:36 -08:00