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David Howells d1065b0a6f cachefiles: Implement cache registration and withdrawal 
Do the following:

 (1) Fill out cachefiles_daemon_add_cache() so that it sets up the cache
     directories and registers the cache with cachefiles.

 (2) Add a function to do the top-level part of cache withdrawal and
     unregistration.

 (3) Add a function to sync a cache.

Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/163819633175.215744.10857127598041268340.stgit@warthog.procyon.org.uk/ # v1
Link: https://lore.kernel.org/r/163906935445.143852.15545194974036410029.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163967142904.1823006.244055483596047072.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/164021543872.640689.14370017789605073222.stgit@warthog.procyon.org.uk/ # v4
2022-01-07 13:41:46 +00:00
..
9p
fscache: Remove the contents of the fscache driver, pending rewrite
2022-01-07 09:22:19 +00:00
adfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
affs
affs: use bdev_nr_sectors instead of open coding it
2021-10-18 14:43:22 -06:00
afs
fscache: Remove the contents of the fscache driver, pending rewrite
2022-01-07 09:22:19 +00:00
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
for-5.16-rc2-tag
2021-11-26 11:24:32 -08:00
cachefiles
cachefiles: Implement cache registration and withdrawal
2022-01-07 13:41:46 +00:00
ceph
fscache, cachefiles: Disable configuration
2022-01-07 09:21:44 +00:00
cifs
fscache, cachefiles: Disable configuration
2022-01-07 09:21:44 +00:00
coda
coda: bump module version to 7.2
2021-11-09 10:02:51 -08:00
configfs
configfs: fix a race in configfs_lookup()
2021-08-25 07:58:49 +02:00
cramfs
cramfs: use bdev_nr_bytes instead of open coding it
2021-10-18 14:43:22 -06:00
crypto
fscrypt: improve a few comments
2021-10-25 19:11:50 -07:00
debugfs
debugfs: debugfs_create_file_size(): use IS_ERR to check for error
2021-09-21 09:09:06 +02:00
devpts
…
dlm
fs: dlm: avoid comms shutdown delay in release_lockspace
2021-09-01 11:29:14 -05:00
ecryptfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
efivarfs
efivars: convert to fileattr
2021-04-12 15:04:29 +02:00
efs
…
erofs
erofs: fix deadlock when shrink erofs slab
2021-11-23 14:58:16 +08:00
exfat
exfat: fix incorrect loading of i_blocks for large files
2021-11-01 07:49:21 +09:00
exportfs
…
ext2
ext2: fix sleeping in atomic bugs on error
2021-09-22 13:05:23 +02:00
ext4
Only bug fixes and cleanups for ext4 this merge window. Of note are
2021-11-10 17:05:37 -08:00
f2fs
Update to zstd-1.4.10
2021-11-13 15:32:30 -08:00
fat
for-5.16/inode-sync-2021-10-29
2021-11-01 10:25:27 -07:00
freevxfs
…
fscache
fscache: Provide a function to resize a cookie
2022-01-07 13:40:33 +00:00
fuse
fuse: release pipe buf after last use
2021-11-25 14:05:18 +01:00
gfs2
gfs2: gfs2_create_inode rework
2021-12-02 12:41:10 +01:00
hfs
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
hfsplus
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
hostfs
hostfs: support splice_write
2021-08-26 22:28:02 +02:00
hpfs
treewide: Replace open-coded flex arrays in unions
2021-10-18 12:28:53 -07:00
hugetlbfs
mm,hugetlb: remove mlock ulimit for SHM_HUGETLB
2021-11-09 10:02:48 -08:00
iomap
iomap: iomap_read_inline_data cleanup
2021-11-24 10:15:47 -08:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-10-19 12:51:02 +02:00
jbd2
jbd2: add sparse annotations for add_transaction_credits()
2021-08-30 23:36:50 -04:00
jffs2
vfs: add rcu argument to ->get_acl() callback
2021-08-18 22:08:24 +02:00
jfs
Just one JFS patch
2021-11-03 09:23:25 -07:00
kernfs
Merge 5.15-rc6 into driver-core-next
2021-10-18 09:43:37 +02:00
ksmbd
ksmbd: fix memleak in get_file_stream_info()
2021-11-25 00:09:26 -06:00
lockd
A slow cycle for nfsd: mainly cleanup, including Neil's patch dropping
2021-11-10 16:45:54 -08:00
minix
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
netfs
netfs: Pass more information on how to deal with a hole in the cache
2022-01-07 09:22:19 +00:00
nfs
fscache, cachefiles: Disable configuration
2022-01-07 09:21:44 +00:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
This is just one bugfix for a bufferflow in knfsd's xdr decoding.
2021-11-17 08:38:00 -08:00
nilfs2
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
nls
…
notify
fanotify: Allow users to request FAN_FS_ERROR events
2021-10-27 12:53:45 +02:00
ntfs
fs: ntfs: Limit NTFS_RW to page sizes smaller than 64k
2021-11-27 14:34:41 -08:00
ntfs3
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
ocfs2
Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-11-10 16:15:54 -08:00
omfs
mm: require ->set_page_dirty to be explicitly wired up
2021-06-29 10:53:48 -07:00
openpromfs
…
orangefs
orangefs: three fixes from other folks...
2021-11-09 10:34:06 -08:00
overlayfs
overlayfs update for 5.16
2021-11-09 10:51:12 -08:00
proc
proc/vmcore: fix clearing user buffer by properly using clear_user()
2021-11-20 10:35:55 -08:00
pstore
pstore/blk: Use "%lu" to format unsigned long
2021-11-21 09:44:19 -08:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-21 08:36:48 -07:00
qnx6
…
quota
\n
2021-11-06 16:40:48 -07:00
ramfs
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
reiserfs
\n
2021-11-06 16:40:48 -07:00
romfs
…
smbfs_common
cifs: Move SMB2_Create definitions to the shared area
2021-11-05 09:55:36 -05:00
squashfs
lib: zstd: Add kernel-specific API
2021-11-08 16:55:21 -08:00
sysfs
fs/sysfs/dir.c: replace S_IRWXU|S_IRUGO|S_IXUGO with 0755 sysfs_create_dir_ns()
2021-10-05 16:35:05 +02:00
sysv
sysv: use BUILD_BUG_ON instead of runtime check
2021-11-09 10:02:52 -08:00
tracefs
tracefs: Have tracefs directories not set OTH permission bits by default
2021-10-08 18:08:43 -04:00
ubifs
fscrypt: remove fscrypt_operations::max_namelen
2021-09-20 19:32:33 -07:00
udf
udf: Fix crash after seekdir
2021-11-09 12:53:58 +01:00
ufs
isystem: ship and use stdarg.h
2021-08-19 09:02:55 +09:00
unicode
.gitignore: prefix local generated files with a slash
2021-05-02 00:43:35 +09:00
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: remove incorrect ASSERT in xfs_rename
2021-12-01 17:27:48 -08:00
zonefs
gfs2: Fix mmap + page fault deadlocks
2021-11-02 12:25:03 -07:00
aio.c
Various hardening fixes and cleanups for 5.16-rc1
2021-11-01 17:29:10 -07:00
anon_inodes.c
fs: add anon_inode_getfile_secure() similar to anon_inode_getfd_secure()
2021-09-19 22:35:37 -04:00
attr.c
fs: handle circular mappings correctly
2021-11-17 09:26:09 +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: Limit coredumps to a single thread group
2021-10-08 12:06:02 -05:00
binfmt_elf.c
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
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
fs: simplify init_page_buffers
2021-10-18 14:43:22 -06:00
char_dev.c
…
compat_binfmt_elf.c
…
coredump.c
coredump: Limit coredumps to a single thread group
2021-10-08 12:06:02 -05:00
d_path.c
d_path: fix Kernel doc validator complaining
2021-11-06 13:30:32 -07:00
dax.c
New code for 5.15:
2021-08-31 11:13:35 -07:00
dcache.c
useful constants: struct qstr for ".."
2021-04-15 22:36:45 -04:00
direct-io.c
fs: get rid of the res2 iocb->ki_complete argument
2021-10-25 10:36:24 -06:00
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
Merge branch 'exit-cleanups-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2021-11-10 16:15:54 -08:00
fcntl.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
fhandle.c
…
file_table.c
…
file.c
fget: check that the fd still exists after getting a ref to it
2021-12-03 10:06:58 -08:00
filesystems.c
fs: simplify get_filesystem_list / get_all_fs_names
2021-08-23 01:25:40 -04:00
fs_context.c
memcg: charge fs_context and legacy_fs_context
2021-09-03 09:58:12 -07:00
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
vfs, fscache: Implement pinning of cache usage for writeback
2022-01-07 09:22:19 +00:00
fsopen.c
…
init.c
…
inode.c
fs: Remove FS_THP_SUPPORT
2021-11-17 10:36:35 -05:00
internal.h
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
io_uring.c
io_uring: Fix undefined-behaviour in io_issue_sqe
2021-11-27 06:41:38 -07:00
io-wq.c
io-wq: don't retry task_work creation failure on fatal conditions
2021-12-03 06:27:32 -07:00
io-wq.h
io_uring: optimise INIT_WQ_LIST
2021-10-19 05:49:54 -06:00
ioctl.c
New code for 5.15:
2021-08-31 11:06:32 -07:00
Kconfig
cachefiles: Introduce rewritten driver
2022-01-07 13:40:39 +00:00
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
libfs: Support RENAME_EXCHANGE in simple_rename()
2021-11-03 15:43:08 +01:00
locks.c
locks: remove changelog comments
2021-10-19 14:11:39 -04:00
Makefile
cachefiles: Introduce rewritten driver
2022-01-07 13:40:39 +00:00
mbcache.c
…
mount.h
…
mpage.c
…
namei.c
vfs, cachefiles: Mark a backing file in use with an inode flag
2022-01-07 13:41:32 +00:00
namespace.c
Merge branch 'akpm' (patches from Andrew)
2021-09-03 10:08:28 -07:00
no-block.c
…
nsfs.c
…
open.c
Merge branch 'akpm' (patches from Andrew)
2021-11-06 14:08:17 -07:00
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
fs/posix_acl.c: avoid -Wempty-body warning
2021-11-06 13:30:32 -07:00
proc_namespace.c
…
read_write.c
fs: remove leftover comments from mandatory locking removal
2021-10-26 12:20:50 -04:00
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-17 11:39:49 -07:00
remap_range.c
fs: remove mandatory file locking support
2021-08-23 06:15:36 -04:00
select.c
Revert "memcg: enable accounting for pollfd and select bits arrays"
2021-09-07 11:26:23 -07:00
seq_file.c
seq_file: move seq_escape() to a header
2021-11-09 10:02:52 -08:00
signalfd.c
signal: Rename SIL_PERF_EVENT SIL_FAULT_PERF_EVENT for consistency
2021-07-23 13:16:43 -05:00
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
fs: explicitly unregister per-superblock BDIs
2021-11-06 13:30:34 -07:00
sync.c
block: simplify the block device syncing code
2021-10-22 08:36:55 -06:00
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
…