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Andrea Arcangeli 72981e0e7b userfaultfd: wp: add UFFDIO_COPY_MODE_WP 
This allows UFFDIO_COPY to map pages write-protected.

[peterx@redhat.com: switch to VM_WARN_ON_ONCE in mfill_atomic_pte; add brackets
 around "dst_vma->vm_flags & VM_WRITE"; fix wordings in comments and
 commit messages]
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Bobby Powers <bobbypowers@gmail.com>
Cc: Brian Geffon <bgeffon@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Denis Plotnikov <dplotnikov@virtuozzo.com>
Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: "Kirill A . Shutemov" <kirill@shutemov.name>
Cc: Martin Cracauer <cracauer@cons.org>
Cc: Marty McFadden <mcfadden8@llnl.gov>
Cc: Maya Gokhale <gokhale2@llnl.gov>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Shaohua Li <shli@fb.com>
Link: http://lkml.kernel.org/r/20200220163112.11409-6-peterx@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-04-07 10:43:39 -07:00
..
9p
9p: read only once on O_NONBLOCK
2020-03-27 09:29:56 +00:00
adfs
fs/adfs: bigdir: Fix an error code in adfs_fplus_read()
2020-01-25 11:31:59 -05:00
affs
affs: fix a memory leak in affs_remount
2019-11-18 14:26:43 +01:00
afs
afs: Fix unpinned address list during probing
2020-03-26 16:04:29 -07:00
autofs
LOOKUP_MOUNTPOINT: fold path_mountpointat() into path_lookupat()
2020-03-13 21:08:17 -04:00
befs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
bfs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
btrfs
btrfs: fix missing semaphore unlock in btrfs_sync_file
2020-03-25 16:29:16 +01:00
cachefiles
cachefiles: drop direct usage of ->bmap method.
2020-02-03 08:05:56 -05:00
ceph
ceph: fix memory leak in ceph_cleanup_snapid_map()
2020-03-23 13:07:08 +01:00
cifs
cifs: update internal module version number
2020-03-29 16:59:31 -05:00
coda
y2038: add inode timestamp clamping
2019-09-19 09:42:37 -07:00
configfs
utimes: Clamp the timestamps in notify_change()
2019-12-08 19:10:50 -05:00
cramfs
cramfs: switch to use of errofc() et.al.
2020-02-07 14:48:41 -05:00
crypto
fscrypt updates for 5.7
2020-03-31 12:58:36 -07:00
debugfs
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2020-04-01 14:47:40 -07:00
devpts
devpts_pty_kill(): don't bother with d_delete()
2019-09-03 09:30:56 -04:00
dlm
dlm: use SO_SNDTIMEO_NEW instead of SO_SNDTIMEO_OLD
2019-12-18 18:07:31 +01:00
ecryptfs
eCryptfs fixes for 5.6-rc3
2020-02-17 21:08:37 -08:00
efivarfs
efi: Use more granular check for availability for variable services
2020-02-23 21:59:42 +01:00
efs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
erofs
erofs: handle corrupted images whose decompressed size less than it'd be
2020-03-03 23:40:52 +08:00
exfat
exfat: update file system parameter handling
2020-03-05 21:00:40 -05:00
exportfs
race in exportfs_decode_fh()
2019-11-11 09:21:59 -05:00
ext2
ext2: fix empty body warnings when -Wextra is used
2020-03-23 13:01:37 +01:00
ext4
1) Replace ext4's bmap and iopoll implementations to use iomap.
2020-04-05 10:54:03 -07:00
f2fs
fscrypt updates for 5.7
2020-03-31 12:58:36 -07:00
fat
fat: fix uninit-memory access for partial initialized inode
2020-03-06 07:06:09 -06:00
freevxfs
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
fscache
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
fuse
fuse: fix stack use after return
2020-02-13 09:16:07 +01:00
gfs2
We've got a lot of patches (39) for this merge window. Most of these patches
2020-03-31 14:16:03 -07:00
hfs
hfs/hfsplus: use 64-bit inode timestamps
2019-12-18 18:07:32 +01:00
hfsplus
hfs/hfsplus: use 64-bit inode timestamps
2019-12-18 18:07:32 +01:00
hostfs
hostfs: pass 64-bit timestamps to/from user space
2019-12-18 18:07:32 +01:00
hpfs
fs: compat_ioctl: move FITRIM emulation into file systems
2019-10-23 17:23:46 +02:00
hugetlbfs
hugetlbfs: Use i_mmap_rwsem to address page fault/truncate race
2020-04-02 09:35:32 -07:00
iomap
iomap: fix comments in iomap_dio_rw
2020-03-18 08:04:36 -07:00
isofs
y2038: add inode timestamp clamping
2019-09-19 09:42:37 -07:00
jbd2
jbd2: improve comments about freeing data buffers whose page mapping is NULL
2020-03-05 20:25:05 -05:00
jffs2
fs_parse: fold fs_parameter_desc/fs_parameter_spec
2020-02-07 14:48:37 -05:00
jfs
Trivial cleanup for jfs
2020-02-05 05:28:20 +00:00
kernfs
kernfs: Add option to enable user xattrs
2020-03-16 15:53:47 -04:00
lockd
proc: convert everything to "struct proc_ops"
2020-02-04 03:05:26 +00:00
minix
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
nfs
Highlights:
2020-04-04 11:13:51 -07:00
nfs_common
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
nfsd
nfsd: fsnotify on rmdir under nfsd/clients/
2020-03-19 11:33:42 -04:00
nilfs2
fs: compat_ioctl: move FITRIM emulation into file systems
2019-10-23 17:23:46 +02:00
nls
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
notify
fanotify: Fix the checks in fanotify_fsid_equal
2020-03-30 12:40:53 +02:00
ntfs
fs/buffer: Make BH_Uptodate_Lock bit_spin_lock a regular spinlock_t
2020-03-28 13:21:08 +01:00
ocfs2
ocfs2: use memalloc_nofs_save instead of memalloc_noio_save
2020-04-02 09:35:26 -07:00
omfs
fs: omfs: Initialize filesystem timestamp ranges
2019-08-30 08:11:25 -07:00
openpromfs
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 10:42:02 -07:00
orangefs
help_next should increase position index
2020-02-04 15:22:04 -05:00
overlayfs
ovl: fix lockdep warning for async write
2020-03-13 15:53:06 +01:00
proc
proc: io_accounting: Use new infrastructure to fix deadlocks in execve
2020-03-25 10:04:01 -05:00
pstore
pstore/ram: Replace zero-length array with flexible-array member
2020-03-09 14:45:40 -07:00
qnx4
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
qnx6
fs: Fill in max and min timestamps in superblock
2019-08-30 07:27:17 -07:00
quota
\n
2020-01-30 15:37:41 -08:00
ramfs
fs_parse: fold fs_parameter_desc/fs_parameter_spec
2020-02-07 14:48:37 -05:00
reiserfs
block: remove __bdevname
2020-03-24 07:57:07 -06:00
romfs
Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-09-19 10:06:57 -07:00
squashfs
Merge branch 'work.mount2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-09-19 10:06:57 -07:00
sysfs
sysfs: remove redundant __compat_only_sysfs_link_entry_to_kobj fn
2020-04-05 11:34:35 -07:00
sysv
fs: sysv: Initialize filesystem timestamp ranges
2019-08-30 07:27:18 -07:00
tracefs
simple_recursive_removal(): kernel-side rm -rf for ramfs-style filesystems
2019-12-10 22:29:58 -05:00
ubifs
ubifs: wire up FS_IOC_GET_ENCRYPTION_NONCE
2020-03-19 21:57:06 -07:00
udf
udf: udf_sb.h: Replace zero-length array with flexible-array member
2020-03-16 15:57:09 +01:00
ufs
y2038: add inode timestamp clamping
2019-09-19 09:42:37 -07:00
unicode
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
vboxsf
fs: Add VirtualBox guest shared folder (vboxsf) support
2020-02-08 17:34:58 -05:00
verity
fs-verity: use u64_to_user_ptr()
2020-01-14 13:28:28 -08:00
xfs
xfs: prohibit fs freezing when using empty transactions
2020-03-26 08:19:24 -07:00
zonefs
zonfs: Fix handling of read-only zones
2020-03-25 11:28:26 +09:00
aio.c
aio: prevent potential eventfd recursion on poll
2020-02-03 17:27:47 -07:00
anon_inodes.c
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 10:42:02 -07:00
attr.c
utimes: Clamp the timestamps in notify_change()
2019-12-08 19:10:50 -05:00
bad_inode.c
…
binfmt_aout.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
binfmt_elf_fdpic.c
y2038: elfcore: Use __kernel_old_timeval for process times
2019-11-15 14:38:29 +01:00
binfmt_elf.c
mm/vma: replace all remaining open encodings with is_vm_hugetlb_page()
2020-04-07 10:43:37 -07:00
binfmt_em86.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
binfmt_flat.c
fs/binfmt_flat.c: remove set but not used variable 'inode'
2019-07-16 19:23:22 -07:00
binfmt_misc.c
Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-07-19 10:42:02 -07:00
binfmt_script.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
block_dev.c
New code for 5.7:
2020-04-02 12:59:36 -07:00
buffer.c
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-03-30 16:17:15 -07:00
char_dev.c
chardev: Avoid potential use-after-free in 'chrdev_open()'
2020-01-06 20:10:26 +01:00
compat_binfmt_elf.c
y2038: elfcore: Use __kernel_old_timeval for process times
2019-11-15 14:38:29 +01:00
compat.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
coredump.c
pipe: use exclusive waits when reading or writing
2020-02-08 11:39:19 -08:00
d_path.c
[PATCH] fix d_absolute_path() interplay with fsmount()
2019-08-30 19:31:09 -04:00
dax.c
dax: pass NOWAIT flag to iomap_apply
2020-02-05 20:34:32 -08:00
dcache.c
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-12-08 11:08:28 -08:00
dcookies.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
direct-io.c
fs/direct-io.c: include fs/internal.h for missing prototype
2020-01-04 13:55:09 -08:00
drop_caches.c
fs: avoid softlockups in s_inodes iterators
2019-12-18 00:03:01 -05:00
eventfd.c
eventfd: track eventfd_signal() recursion depth
2020-02-03 17:27:38 -07:00
eventpoll.c
epoll: fix possible lost wakeup on epoll_ctl() path
2020-03-21 18:56:06 -07:00
exec.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2020-04-02 11:22:17 -07:00
fcntl.c
fcntl: Distribute switch variables for initialization
2020-03-03 10:55:06 -05:00
fhandle.c
fs/handle.c - fix up kerneldoc
2019-08-07 21:51:47 -04:00
file_table.c
vfs: Export flush_delayed_fput for use by knfsd.
2019-08-19 11:00:39 -04:00
file.c
io_uring: make sure openat/openat2 honor rlimit nofile
2020-03-20 08:47:27 -06:00
filesystems.c
fs_parser: remove fs_parameter_description name field
2020-02-07 14:48:36 -05:00
fs_context.c
add prefix to fs_context->log
2020-02-07 14:48:35 -05:00
fs_parser.c
fs_parse: remove pr_notice() about each validation
2020-04-02 09:35:26 -07:00
fs_pin.c
switch the remnants of releasing the mountpoint away from fs_pin
2019-07-16 22:52:37 -04:00
fs_struct.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
fs_types.c
…
fs-writeback.c
memcg: fix a crash in wb_workfn when a device disappears
2020-01-31 10:30:36 -08:00
fsopen.c
add prefix to fs_context->log
2020-02-07 14:48:35 -05:00
inode.c
futex: Fix inode life-time issue
2020-03-06 11:06:15 +01:00
internal.h
Merge branch 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-04-02 12:30:08 -07:00
io_uring.c
for-5.7/io_uring-2020-03-29
2020-03-30 12:18:49 -07:00
io-wq.c
io-wq: handle hashed writes in chains
2020-03-23 14:58:07 -06:00
io-wq.h
io-wq: handle hashed writes in chains
2020-03-23 14:58:07 -06:00
ioctl.c
compat-ioctl fix for v5.6
2020-02-08 13:44:41 -08:00
Kconfig
exfat: add Kconfig and Makefile
2020-03-05 21:00:40 -05:00
Kconfig.binfmt
binfmt_flat: make support for old format binaries optional
2019-06-24 09:16:47 +10:00
libfs.c
libfs: fix infoleak in simple_attr_read()
2020-03-24 13:27:16 +01:00
locks.c
locks: reinstate locks_delete_block optimization
2020-03-18 13:03:38 -07:00
Makefile
exfat: add Kconfig and Makefile
2020-03-05 21:00:40 -05:00
mbcache.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
mount.h
switch the remnants of releasing the mountpoint away from fs_pin
2019-07-16 22:52:37 -04:00
mpage.c
fs: move guard_bio_eod() after bio_set_op_attrs
2020-01-09 08:16:12 -07:00
namei.c
fix a braino in legitimize_path()
2020-04-06 10:38:59 -04:00
namespace.c
LOOKUP_MOUNTPOINT: fold path_mountpointat() into path_lookupat()
2020-03-13 21:08:17 -04:00
no-block.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
nsfs.c
fs/nsfs.c: Added ns_match
2020-03-12 17:33:11 -07:00
open.c
Merge branch 'work.dotdot1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-04-02 12:30:08 -07:00
pipe.c
mm: kmem: rename memcg_kmem_(un)charge() into memcg_kmem_(un)charge_page()
2020-04-02 09:35:28 -07:00
pnode.c
fs/namespace: fix unprivileged mount propagation
2019-06-17 17:36:09 -04:00
pnode.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209
2019-05-30 11:29:53 -07:00
posix_acl.c
fs/posix_acl.c: fix kernel-doc warnings
2020-01-04 13:55:09 -08:00
proc_namespace.c
vfs: subtype handling moved to fuse
2019-09-06 21:28:49 +02:00
read_write.c
overlayfs update for 5.6
2020-02-04 11:45:21 +00:00
readdir.c
readdir: make user_access_begin() use the real access range
2020-01-23 10:15:28 -08:00
select.c
y2038: syscalls: change remaining timeval to __kernel_old_timeval
2019-11-15 14:38:29 +01:00
seq_file.c
seq_file: fix problem when seeking mid-record
2019-08-13 16:06:52 -07:00
signalfd.c
…
splice.c
splice: make do_splice public
2020-03-02 14:04:31 -07:00
stack.c
sched/rt, fs: Use CONFIG_PREEMPTION
2019-12-08 14:37:36 +01:00
stat.c
fs: make two stat prep helpers available
2020-01-20 17:03:54 -07:00
statfs.c
vfs: Fix EOVERFLOW testing in put_compat_statfs64
2019-10-03 14:21:35 -07:00
super.c
fs: call fsnotify_sb_delete after evict_inodes
2019-12-18 00:03:01 -05:00
sync.c
fs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback
2019-05-14 09:47:50 -07:00
timerfd.c
timerfd: Make timerfd_settime() time namespace aware
2020-01-14 12:20:53 +01:00
userfaultfd.c
userfaultfd: wp: add UFFDIO_COPY_MODE_WP
2020-04-07 10:43:39 -07:00
utimes.c
utimes: Clamp the timestamps in notify_change()
2019-12-08 19:10:50 -05:00
xattr.c
kernfs: Add removed_size out param for simple_xattr_set
2020-03-16 15:53:47 -04:00