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Yun Zhou 8572388493 proc: fix documentation and description of pagemap 
commit dd21bfa425c098b95ca86845f8e7d1ec1ddf6e4a upstream.

Since bit 57 was exported for uffd-wp write-protected (commit
fb8e37f35a: "mm/pagemap: export uffd-wp protection information"),
fixing it can reduce some unnecessary confusion.

Link: https://lkml.kernel.org/r/20220301044538.3042713-1-yun.zhou@windriver.com
Fixes: fb8e37f35a ("mm/pagemap: export uffd-wp protection information")
Signed-off-by: Yun Zhou <yun.zhou@windriver.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Tiberiu A Georgescu <tiberiu.georgescu@nutanix.com>
Cc: Florian Schmidt <florian.schmidt@nutanix.com>
Cc: Ivan Teterevkov <ivan.teterevkov@nutanix.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Colin Cross <ccross@google.com>
Cc: Alistair Popple <apopple@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-08 19:14:19 +01:00
..
9p
Revert "fs/9p: search open fids first"
2022-02-08 18:35:09 +01:00
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
afs: Fix mmap
2021-12-16 09:10:13 -08:00
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: do not start relocation until in progress drops are done
2022-03-08 19:14:19 +01:00
cachefiles
Merge tag 'for-5.16/ki_complete-2021-10-29' of git://git.kernel.dk/linux-block
2021-11-01 10:17:11 -07:00
ceph
ceph: put the requests/sessions when it fails to alloc memory
2022-02-01 17:29:17 +01:00
cifs
cifs: modefromsids must add an ACE for authenticated users
2022-03-08 19:14:02 +01:00
coda
coda: bump module version to 7.2
2021-11-09 10:02:51 -08:00
configfs
configfs: fix a race in configfs_{,un}register_subsystem()
2022-03-02 11:51:11 +01:00
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: lockdown: Allow reading debugfs files that are not world readable
2022-01-27 12:01:57 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:29:03 +01:00
dlm
fs: dlm: filter user dlm messages for kernel locks
2022-01-27 12:02:12 +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
2021-11-23 14:58:16 +08:00
exfat
exfat: fix i_blocks for files truncated over 4 GiB
2022-03-08 19:14:04 +01:00
exportfs
…
ext2
ext2: fix sleeping in atomic bugs on error
2021-09-22 13:05:23 +02:00
ext4
ext4: fast commit may miss file actions
2022-03-08 19:14:05 +01:00
f2fs
f2fs: fix to check available space of CP area correctly in update_ckpt_flags()
2022-01-27 12:02:56 +01:00
fat
Merge tag 'for-5.16/inode-sync-2021-10-29' of git://git.kernel.dk/linux-block
2021-11-01 10:25:27 -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 12:02:44 +01:00
gfs2
Revert "gfs2: check context in gfs2_glock_put"
2022-02-16 12:58:22 +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
hugetlbfs: fix off-by-one error in hugetlb_vmdelete_list()
2022-01-27 12:02:42 +01:00
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
ext4: fast commit may not fallback for ineligible commit
2022-03-08 19:14:05 +01:00
jffs2
jffs2: GC deadlock reading a page that is used in jffs2_write_begin()
2022-01-27 12:02:28 +01:00
jfs
Merge tag 'jfs-5.16' of git://github.com/kleikamp/linux-shaggy
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: don't align last entry offset in smb2 query directory
2022-02-23 12:06:06 +01:00
lockd
lockd: fix failure to cleanup client locks
2022-02-05 12:39:55 +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()
2021-12-07 15:47:09 +00:00
nfs
NFS: Do not report writeback errors in nfs_getattr()
2022-02-23 12:06:02 +01:00
nfs_common
nfs: Fix kerneldoc warning shown up by W=1
2021-10-04 22:02:17 +01:00
nfsd
NFSD: Fix the behavior of READ near OFFSET_MAX
2022-02-16 12:58:09 +01:00
nilfs2
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
nls
…
notify
fanotify: Fix stale file descriptor in copy_event_to_user()
2022-02-05 12:39:57 +01:00
ntfs
fs: ntfs: Limit NTFS_RW to page sizes smaller than 64k
2021-11-27 14:34:41 -08:00
ntfs3
Merge tag 'gfs2-v5.15-rc5-mmap-fault' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
2021-11-02 12:25:03 -07:00
ocfs2
ocfs2: fix a deadlock when commit trans
2022-02-01 17:29:08 +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 09:12:19 +01:00
overlayfs
ovl: fix NULL pointer dereference in copy up warning
2022-02-05 12:39:58 +01:00
proc
proc: fix documentation and description of pagemap
2022-03-08 19:14:19 +01:00
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
quota: make dquot_quota_sync return errors from ->sync_fs
2022-02-23 12:05:50 +01:00
ramfs
Merge branch 'akpm' (patches from Andrew)
2021-11-09 10:11:53 -08:00
reiserfs
Merge tag 'fs_for_v5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2021-11-06 16:40:48 -07:00
romfs
…
smbfs_common
cifs: Fix crash on unload of cifs_arc4.ko
2021-12-07 22:38:03 -06:00
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: Set the group ownership in apply_options() not parse_options()
2022-03-02 11:51:14 +01:00
ubifs
ubifs: Error path in ubifs_remount_rw() seems to wrongly free write buffers
2022-01-27 12:02:43 +01:00
udf
udf: Fix NULL ptr deref when converting from inline format
2022-02-01 17:29:02 +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
2021-12-22 14:19:18 -08:00
zonefs
zonefs: add MODULE_ALIAS_FS
2021-12-17 16:56:35 +09:00
aio.c
aio: Fix incorrect usage of eventfd_signal_allowed()
2021-12-09 10:52:55 -08:00
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
binfmt_elf: Avoid total_mapping_size for ET_EXEC
2022-03-08 19:14:06 +01:00
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
Merge tag 'iomap-5.15-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
2021-08-31 11:13:35 -07:00
dcache.c
…
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
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
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: clarify and improve __fget_files() implementation
2021-12-13 10:55:30 -08:00
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 09:12:19 +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 tag 'kspp-misc-fixes-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
2021-11-01 17:29:10 -07:00
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: add a schedule point in io_add_buffers()
2022-03-02 11:51:01 +01:00
io-wq.c
io-wq: drop wqe lock before creating new worker
2021-12-13 09:04:01 -07:00
io-wq.h
io_uring: optimise INIT_WQ_LIST
2021-10-19 05:49:54 -06:00
ioctl.c
Merge tag 'vfs-5.15-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
2021-08-31 11:06:32 -07:00
Kconfig
Merge tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6
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
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
Merge tag '5.15-rc-cifs-part2' of git://git.samba.org/sfrench/cifs-2.6
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 17:29:03 +01:00
namespace.c
fs/mount_setattr: always cleanup mount_kattr
2021-12-30 15:12:13 -08:00
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
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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 10:59:24 +01:00
seq_file.c
seq_file: move seq_escape() to a header
2021-11-09 10:02:52 -08:00
signalfd.c
signalfd: use wake_up_pollfree()
2021-12-09 10:49:56 -08:00
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 12:05:50 +01:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-02-23 12:05:50 +01:00
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
…