Andrei Vagin a516403787 fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions ... Patch series "fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions", v2. Introduce the PAGE_IS_GUARD flag in the PAGEMAP_SCAN ioctl to expose information about guard regions. This allows userspace tools, such as CRIU, to detect and handle guard regions. Currently, CRIU utilizes PAGEMAP_SCAN as a more efficient alternative to parsing /proc/pid/pagemap. Without this change, guard regions are incorrectly reported as swap-anon regions, leading CRIU to attempt dumping them and subsequently failing. The series includes updates to the documentation and selftests to reflect the new functionality. This patch (of 3): Introduce the PAGE_IS_GUARD flag in the PAGEMAP_SCAN ioctl to expose information about guard regions. This allows userspace tools, such as CRIU, to detect and handle guard regions. Link: https://lkml.kernel.org/r/20250324065328.107678-1-avagin@google.com Link: https://lkml.kernel.org/r/20250324065328.107678-2-avagin@google.com Signed-off-by: Andrei Vagin <avagin@gmail.com> Acked-by: David Hildenbrand <david@redhat.com> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2025-05-11 17:48:16 -07:00
..
android
byteorder
caif
can
cifs
counter	counter: microchip-tcb-capture: Add capture extensions for registers RA/RB	2025-03-08 08:57:18 +09:00
dvb
genwqe
hdlc
hsi
iio	iio: introduce the FAULT event type	2025-02-08 15:16:29 +00:00
isdn
media/raspberrypi
misc
mmc
netfilter	netfilter: conntrack: add conntrack event timestamp	2025-01-09 14:42:16 +01:00
netfilter_arp
netfilter_bridge
netfilter_ipv4
netfilter_ipv6
nfsd
raid	md: reintroduce md-linear	2025-01-13 07:36:29 -08:00
sched
spi
sunrpc
surface_aggregator
tc_act
tc_ematch
usb	USB/Thunderbolt update for 6.15-rc1	2025-04-02 18:23:31 -07:00
a.out.h
acct.h
acrn.h
adb.h
adfs_fs.h
affs_hardblocks.h
agpgart.h
aio_abi.h
am437x-vpfe.h
amt.h
apm_bios.h
arcfb.h
arm_sdei.h
aspeed-lpc-ctrl.h
aspeed-p2a-ctrl.h
aspeed-video.h
atalk.h
atm.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_tcp.h
atm_zatm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
audit.h	landlock: Add AUDIT_LANDLOCK_DOMAIN and log domain status	2025-03-26 13:59:38 +01:00
auto_dev-ioctl.h
auto_fs.h
auto_fs4.h
auxvec.h
ax25.h
batadv_packet.h
batman_adv.h	batman-adv: Use consistent name for mesh interface	2025-02-22 11:36:22 +01:00
baycom.h
bcm933xx_hcs.h
bfs_fs.h
binfmts.h
bits.h	uapi: Revert "bitops: avoid integer overflow in GENMASK(_ULL)"	2025-02-28 12:36:11 -05:00
blk-crypto.h	blk-crypto: add ioctls to create and prepare hardware-wrapped keys	2025-02-10 09:54:19 -07:00
blkdev.h
blkpg.h
blktrace_api.h
blkzoned.h
bpf.h	bpf: Clarify handling of mark and tstamp by redirect_peer	2025-05-07 18:16:33 -07:00
bpf_common.h
bpf_perf_event.h
bpqether.h
bsg.h
bt-bmc.h
btf.h	docs/bpf: Document the semantics of BTF tags with kind_flag	2025-02-05 16:17:59 -08:00
btrfs.h	btrfs: defrag: extend ioctl to accept compression levels	2025-03-18 20:35:50 +01:00
btrfs_tree.h
cachefiles.h
can.h	can: canxl: support Remote Request Substitution bit access	2025-02-19 11:10:54 +01:00
capability.h	reboot: add support for configuring emergency hardware protection action	2025-03-16 23:24:14 -07:00
capi.h
cciss_defs.h
cciss_ioctl.h
ccs.h
cdrom.h
cec-funcs.h
cec.h
cfm_bridge.h
cgroupstats.h
chio.h
close_range.h
cn_proc.h
coda.h
coff.h
comedi.h
connector.h
const.h	treewide: fix typo 'unsigned __init128' -> 'unsigned __int128'	2025-03-05 12:00:03 -05:00
coresight-stm.h
counter.h	counter: add direction change event	2025-02-05 13:22:04 +09:00
cramfs_fs.h
cryptouser.h
cuda.h
cxl_mem.h
cyclades.h
cycx_cfm.h
dcbnl.h
dccp.h
devlink.h
dlm.h
dlm_device.h
dlm_plock.h
dlmconstants.h
dm-ioctl.h	dm-table: atomic writes support	2025-01-17 22:23:47 +01:00
dm-log-userspace.h
dma-buf.h
dma-heap.h
dns_resolver.h
dpll.h	tools: ynl-gen: de-kdocify enums with no doc for entries	2024-11-04 18:11:47 -08:00
dqblk_xfs.h
dw100.h
edd.h
efs_fs_sb.h
elf-em.h
elf-fdpic.h
elf.h	Updates for the VDSO infrastructure:	2025-03-25 11:30:42 -07:00
errno.h
errqueue.h	net-timestamp: COMPLETION timestamp on packet tx completion	2025-03-25 12:48:05 -04:00
erspan.h
ethtool.h	ethtool: Symmetric OR-XOR RSS hash	2025-02-25 18:31:04 -08:00
ethtool_netlink.h	net: ethtool: add support for structured PHY statistics	2025-01-14 11:44:19 +01:00
ethtool_netlink_generated.h	netlink: specs: ethtool: Remove UAPI duplication of phy-upstream enum	2025-04-28 15:49:47 -07:00
eventfd.h
eventpoll.h
exfat.h
ext4.h
f2fs.h	f2fs: add ioctl to get IO priority hint	2025-02-12 02:29:30 +00:00
fadvise.h
falloc.h
fanotify.h	fanotify: notify on mount attach and detach	2025-02-05 17:21:07 +01:00
fb.h
fcntl.h	exec: Add a new AT_EXECVE_CHECK flag to execveat(2)	2024-12-18 17:00:29 -08:00
fd.h
fdreg.h
fib_rules.h	net: fib_rules: Add DSCP mask attribute	2025-02-21 16:08:47 -08:00
fiemap.h	fiemap: use kernel-doc includes in fiemap docbook	2024-12-22 11:29:50 +01:00
filter.h
firewire-cdev.h	drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup	2025-03-04 09:47:36 -07:00
firewire-constants.h
fou.h
fpga-dfl.h
fs.h	fs/proc: extend the PAGEMAP_SCAN ioctl to report guard regions	2025-05-11 17:48:16 -07:00
fscrypt.h
fsi.h
fsl_hypervisor.h
fsl_mc.h
fsmap.h
fsverity.h
fuse.h	fuse: add kernel-enforced timeout option for requests	2025-03-31 14:59:25 +02:00
futex.h
gameport.h
gen_stats.h
genetlink.h
gfs2_ondisk.h
gpio.h
gsmmux.h
gtp.h
handshake.h
hash_info.h
hdlc.h
hdlcdrv.h
hdreg.h
hid.h
hiddev.h
hidraw.h
hpet.h
hsr_netlink.h
hw_breakpoint.h
hyperv.h
i2c-dev.h
i2c.h
i2o-dev.h
i8k.h
icmp.h
icmpv6.h
idxd.h
if.h
if_addr.h
if_addrlabel.h
if_alg.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h
if_eql.h
if_ether.h
if_fc.h
if_fddi.h
if_hippi.h
if_infiniband.h
if_link.h	net: advertise netns_immutable property via netlink	2025-03-04 12:44:48 +01:00
if_ltalk.h
if_macsec.h
if_packet.h
if_phonet.h
if_plip.h
if_ppp.h
if_pppol2tp.h
if_pppox.h
if_slip.h
if_team.h
if_tun.h
if_tunnel.h
if_vlan.h
if_x25.h
if_xdp.h	xsk: Add launch time hardware offload support to XDP Tx metadata	2025-02-20 15:13:45 -08:00
ife.h
igmp.h
ila.h
in.h	include: uapi: protocol number and packet structs for AGGFRAG in ESP	2024-12-05 10:01:09 +01:00
in6.h
in_route.h
inet_diag.h
inotify.h
input-event-codes.h	Input: allocate keycode for phone linking	2025-01-15 16:26:41 +02:00
input.h
io_uring.h	io_uring/zcrx: return ifq id to the user	2025-04-15 07:37:49 -06:00
ioam6.h
ioam6_genl.h
ioam6_iptunnel.h
ioctl.h
iommufd.h	iommufd: Fix iommu_vevent_header tables markup	2025-03-28 10:07:23 -03:00
ioprio.h
ip.h	include: uapi: protocol number and packet structs for AGGFRAG in ESP	2024-12-05 10:01:09 +01:00
ip6_tunnel.h
ip_vs.h
ipc.h
ipmi.h
ipmi_bmc.h
ipmi_msgdefs.h
ipmi_ssif_bmc.h
ipsec.h	xfrm: add generic iptfs defines and functionality	2024-12-05 10:01:28 +01:00
ipv6.h
ipv6_route.h
irqnr.h
iso_fs.h
isst_if.h
ivtv.h
ivtvfb.h
jffs2.h
joystick.h
kcm.h
kcmp.h
kcov.h
kd.h
kdev_t.h
kernel-page-flags.h
kernel.h
kernelcapi.h
kexec.h
keyboard.h
keyctl.h
kfd_ioctl.h	drm/amdkfd: Add support for more per-process flag	2025-03-07 15:33:49 -05:00
kfd_sysfs.h	drm/amdkfd: flag per-sdma queue reset supported to user space	2025-03-05 10:47:33 -05:00
kvm.h	KVM: arm64: Allow userspace to change the implementation ID registers	2025-02-26 01:32:16 -08:00
kvm_para.h
l2tp.h
landlock.h	landlock: Update log documentation	2025-04-17 11:09:10 +02:00
libc-compat.h
limits.h
lirc.h
llc.h
loadpin.h
lockd_netlink.h	lockd: add netlink control interface	2025-03-10 09:10:53 -04:00
loop.h
lp.h
lsm.h
lwtunnel.h
magic.h
major.h
map_to_7segment.h
map_to_14segment.h
matroxfb.h
max2175.h
mctp.h
mdio.h	net: mdio: add definition for clock stop capable bit	2025-01-16 17:22:59 -08:00
media-bus-format.h	media: uapi: Add MEDIA_BUS_FMT_RGB101010_1X7X5_{SPWG, JEIDA}	2024-11-05 13:26:42 +02:00
media.h
mei.h
mei_uuid.h
membarrier.h
memfd.h
mempolicy.h
mii.h
minix_fs.h
mman.h
mmtimer.h
module.h
mount.h	Merge patch series "fs: allow changing idmappings"	2025-02-12 12:12:34 +01:00
mpls.h
mpls_iptunnel.h
mptcp.h
mptcp_pm.h	netlink: specs: mptcp: clearly mention attributes	2024-12-27 11:16:21 -08:00
mqueue.h
mroute.h
mroute6.h
mrp_bridge.h
msdos_fs.h
msg.h
mshv.h	Drivers: hv: Introduce mshv_root module to expose /dev/mshv to VMMs	2025-03-21 18:24:22 +00:00
mtio.h
nbd-netlink.h
nbd.h
ncsi.h
ndctl.h
neighbour.h
net.h
net_dropmon.h
net_namespace.h
net_shaper.h
net_tstamp.h	net-timestamp: COMPLETION timestamp on packet tx completion	2025-03-25 12:48:05 -04:00
netconf.h
netdev.h	bpf-next-for-netdev	2025-02-21 15:59:47 -08:00
netdevice.h
netfilter.h
netfilter_arp.h
netfilter_bridge.h
netfilter_ipv4.h
netfilter_ipv6.h
netlink.h
netlink_diag.h
netrom.h
nexthop.h
nfc.h	net: nfc: Propagate ISO14443 type A target ATS to userspace via netlink	2024-11-07 10:21:58 +01:00
nfs.h
nfs2.h
nfs3.h
nfs4.h	nfsd: rework NFS4_SHARE_WANT_* flag handling	2025-01-21 15:30:01 -05:00
nfs4_mount.h
nfs_fs.h
nfs_idmap.h
nfs_mount.h
nfsacl.h
nfsd_netlink.h
nilfs2_api.h
nilfs2_ondisk.h	nilfs2: Mark on-disk strings as nonstring	2025-02-28 11:51:32 -08:00
nitro_enclaves.h
nl80211-vnd-intel.h
nl80211.h	wifi: cfg80211: improve supported_selector documentation	2025-03-11 10:53:10 +01:00
npcm-video.h
nsfs.h
nsm.h
ntsync.h	ntsync: Introduce alertable waits.	2025-01-08 13:18:11 +01:00
nubus.h
nvme_ioctl.h
nvram.h
omap3isp.h
omapfb.h
oom.h
openat2.h
openvswitch.h
packet_diag.h
papr_pdsm.h
param.h
parport.h
patchkey.h
pci.h
pci_regs.h	Merge branch 'pci/resource'	2025-03-27 13:14:45 -05:00
pcitest.h	misc: pci_endpoint_test: Add support for PCITEST_IRQ_TYPE_AUTO	2025-03-26 06:11:54 +00:00
perf_event.h	perf: Extend per event callchain limit to branch stack	2025-03-17 11:23:36 +01:00
personality.h
pfkeyv2.h
pfrut.h
pg.h
phantom.h
phonet.h
pidfd.h	pidfs: ensure that PIDFS_INFO_EXIT is available	2025-03-19 14:40:18 +01:00
pkt_cls.h
pkt_sched.h
pktcdvd.h
pmu.h
poll.h
posix_acl.h
posix_acl_xattr.h
posix_types.h
ppdev.h
ppp-comp.h
ppp-ioctl.h
ppp_defs.h
pps.h
pps_gen.h	drivers pps: add PPS generators support	2025-01-08 13:18:09 +01:00
pr.h
prctl.h	posix-timers: Provide a mechanism to allocate a given timer ID	2025-03-13 12:07:18 +01:00
psample.h
psci.h
psp-dbc.h
psp-sev.h	crypto: ccp - Fix uAPI definitions of PSP errors	2025-03-15 16:21:22 +08:00
ptp_clock.h
ptrace.h	ptrace: introduce PTRACE_SET_SYSCALL_INFO request	2025-05-11 17:48:15 -07:00
qemu_fw_cfg.h
qnx4_fs.h
qnxtypes.h
qrtr.h
quota.h
radeonfb.h
random.h
rds.h
reboot.h
remoteproc_cdev.h
resource.h
rfkill.h
rio_cm_cdev.h
rio_mport_cdev.h
rkisp1-config.h	media: uapi: rkisp1-config: Fix typo in extensible params example	2025-02-21 10:33:01 +01:00
romfs_fs.h
rose.h
route.h
rpl.h
rpl_iptunnel.h
rpmsg.h
rpmsg_types.h
rseq.h
rtc.h
rtnetlink.h	Add OVN to rtnetlink.h	2025-02-25 18:14:03 -08:00
rxrpc.h
scc.h
sched.h
scif_ioctl.h
screen_info.h
sctp.h
seccomp.h
securebits.h	security: Add EXEC_RESTRICT_FILE and EXEC_DENY_INTERACTIVE securebits	2024-12-18 17:00:29 -08:00
sed-opal.h
seg6.h
seg6_genl.h
seg6_hmac.h
seg6_iptunnel.h
seg6_local.h
selinux_netlink.h
sem.h
serial.h
serial_core.h
serial_reg.h
serio.h
sev-guest.h
shm.h
signal.h
signalfd.h
smc.h
smc_diag.h
smiapp.h
snmp.h	net: reorganize IP MIB values (II)	2025-03-25 07:37:53 -07:00
sock_diag.h
socket.h
sockios.h
sonet.h
sonypi.h
sound.h
soundcard.h
stat.h	fs: add STATX_DIO_READ_ALIGN	2025-01-09 16:23:17 +01:00
stddef.h	uapi: stddef.h: Introduce __kernel_nonstring	2025-02-28 11:51:32 -08:00
stm.h
string.h
suspend_ioctls.h
swab.h
switchtec_ioctl.h
sync_file.h
synclink.h
sysctl.h
sysinfo.h
target_core_user.h
taskstats.h	taskstats: modify taskstats version	2025-02-17 22:40:02 -08:00
tcp.h	tcp: support TCP_DELACK_MAX_US for set/getsockopt use	2025-03-25 04:27:20 -07:00
tcp_metrics.h
tdx-guest.h
tee.h
termios.h
thermal.h	thermal/netlink: Prevent userspace segmentation fault by adjusting UAPI header	2025-02-11 20:53:14 +01:00
thp7312.h
time.h
time_types.h
timerfd.h
times.h
timex.h
tiocl.h
tipc.h
tipc_config.h
tipc_netlink.h
tipc_sockets_diag.h
tls.h
toshiba.h
tps6594_pfsm.h
trace_mmap.h
tty.h
tty_flags.h
types.h
ublk_cmd.h	ublk: add segment parameter	2025-03-28 16:15:43 -06:00
udf_fs_i.h
udmabuf.h
udp.h
uhid.h
uinput.h
uio.h
uleds.h
ultrasound.h
um_timetravel.h
un.h
unistd.h
unix_diag.h
usbdevice_fs.h
usbip.h
user_events.h
userfaultfd.h
userio.h
utime.h
utsname.h
uuid.h
uvcvideo.h	media: uvcvideo: implement UVC v1.5 ROI	2025-03-03 18:23:36 +01:00
v4l2-common.h
v4l2-controls.h	media: uvcvideo: implement UVC v1.5 ROI	2025-03-03 18:23:36 +01:00
v4l2-dv-timings.h	media: replace obsolete hans.verkuil@cisco.com alias	2024-11-08 13:38:09 +01:00
v4l2-mediabus.h
v4l2-subdev.h
vbox_err.h
vbox_vmmdev_types.h
vboxguest.h
vdpa.h
vduse.h	vduse: relicense under GPL-2.0 OR BSD-3-Clause	2025-01-08 06:37:13 -05:00
vesa.h
veth.h
vfio.h	iommufd 6.15 merge window pull	2025-04-01 18:03:46 -07:00
vfio_ccw.h
vfio_zdev.h
vhost.h	vhost: fix VHOST_*_OWNER documentation	2025-04-14 09:51:31 -04:00
vhost_types.h
videodev2.h	media: v4l2-ctrls: add support for V4L2_CTRL_WHICH_MIN/MAX_VAL	2025-03-03 18:23:35 +01:00
virtio_9p.h
virtio_balloon.h
virtio_blk.h
virtio_bt.h
virtio_config.h
virtio_console.h
virtio_crypto.h
virtio_fs.h
virtio_gpio.h
virtio_gpu.h
virtio_i2c.h
virtio_ids.h
virtio_input.h
virtio_iommu.h
virtio_mem.h
virtio_mmio.h
virtio_net.h	virtio_net: Split struct virtio_net_rss_config	2025-03-25 09:30:21 -07:00
virtio_pci.h	virtio_pci: Use self group type for cap commands	2025-04-14 09:51:31 -04:00
virtio_pcidev.h
virtio_pmem.h
virtio_ring.h
virtio_rng.h
virtio_scmi.h
virtio_scsi.h
virtio_snd.h	virtio_snd.h: clarify that controls depends on VIRTIO_SND_F_CTLS	2025-02-14 12:58:02 +01:00
virtio_types.h
virtio_vsock.h
vm_sockets.h
vm_sockets_diag.h
vmclock-abi.h
vmcore.h
vsockmon.h
vt.h
vtpm_proxy.h
wait.h
watch_queue.h
watchdog.h
wireguard.h
wireless.h
wmi.h
wwan.h
x25.h
xattr.h	fs/xattr: bpf: Introduce security.bpf. xattr name prefix	2025-02-13 19:35:31 -08:00
xdp_diag.h
xfrm.h	xfrm: netlink: add config (netlink) options	2024-12-05 10:01:15 +01:00
xilinx-v4l2-controls.h
zorro.h
zorro_ids.h