AcoSail/kernel_optimize_test
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bd6d9a0dd4
kernel_optimize_test/include
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Liu Zixian 2d2d8b0eca mm/hugetlb: initialize hugetlb_usage in mm_init 
commit 13db8c50477d83ad3e3b9b0ae247e5cd833a7ae4 upstream.

After fork, the child process will get incorrect (2x) hugetlb_usage.  If
a process uses 5 2MB hugetlb pages in an anonymous mapping,

	HugetlbPages:	   10240 kB

and then forks, the child will show,

	HugetlbPages:	   20480 kB

The reason for double the amount is because hugetlb_usage will be copied
from the parent and then increased when we copy page tables from parent
to child.  Child will have 2x actual usage.

Fix this by adding hugetlb_count_init in mm_init.

Link: https://lkml.kernel.org/r/20210826071742.877-1-liuzixian4@huawei.com
Fixes: 5d317b2b65 ("mm: hugetlb: proc: add HugetlbPages field to /proc/PID/status")
Signed-off-by: Liu Zixian <liuzixian4@huawei.com>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: <stable@vger.kernel.org>
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>
2021-09-18 13:40:36 +02:00
..
acpi ACPI: fix NULL pointer dereference 2021-08-08 09:05:23 +02:00
asm-generic vmlinux.lds.h: Handle clang's module.{c,d}tor sections 2021-08-18 08:59:18 +02:00
clocksource clocksource/drivers/timer-ti-dm: Save and restore timer TIOCP_CFG 2021-07-14 16:56:12 +02:00
crypto crypto: public_key: fix overflow during implicit conversion 2021-09-18 13:40:08 +02:00
drm drm: protect drm_master pointers in drm_lease.c 2021-09-18 13:40:19 +02:00
dt-bindings clk: imx8mq: remove SYS PLL 1/2 clock gates 2021-07-14 16:56:20 +02:00
keys certs: Add EFI_CERT_X509_GUID support for dbx entries 2021-06-30 08:47:30 -04:00
kunit
kvm
linux mm/hugetlb: initialize hugetlb_usage in mm_init 2021-09-18 13:40:36 +02:00
math-emu
media media: subdev: disallow ioctl for saa6588/davinci 2021-07-19 09:45:02 +02:00
memory
misc
net net: Fix offloading indirect devices dependency on qdisc order creation 2021-09-18 13:40:30 +02:00
pcmcia
ras
rdma RDMA: Lift ibdev_to_node from rds to common code 2021-02-26 10:12:59 +01:00
scsi scsi: iscsi: Fix conn use after free during resets 2021-07-20 16:05:41 +02:00
soc firmware: raspberrypi: Keep count of all consumers 2021-09-15 09:50:41 +02:00
sound ALSA: hda: intel-nhlt: verify config type 2021-03-09 11:11:14 +01:00
target scsi: target: core: Add cmd length set before cmd complete 2021-03-17 17:06:25 +01:00
trace afs: Fix tracepoint string placement with built-in AFS 2021-07-28 14:35:41 +02:00
uapi serial: 8250: Define RX trigger levels for OxSemi 950 devices 2021-09-18 13:40:22 +02:00
vdso
video
xen Xen/gntdev: correct error checking in gntdev_map_grant_pages() 2021-02-23 15:53:24 +01:00