linux/include
Wang Yaxin 0bf2d838de taskstats: fix struct taskstats breaks backward compatibility since version 15
Problem
========
commit 658eb5ab91 ("delayacct: add delay max to record delay peak")
  - adding more fields
commit f65c64f311 ("delayacct: add delay min to record delay peak")
  - adding more fields
commit b016d08737 ("taskstats: modify taskstats version")
 - version bump to 15

Since version 15 (TASKSTATS_VERSION=15) the new layout of the structure
adds fields in the middle of the structure, rendering all old software
incompatible with newer kernels and software compiled against the new
kernel headers incompatible with older kernels.

Solution
=========
move delay max and delay min to the end of taskstat, and bump
the version to 16 after the change

[wang.yaxin@zte.com.cn: adjust indentation]
  Link: https://lkml.kernel.org/r/202505192131489882NSciXV4EGd8zzjLuwoOK@zte.com.cn
Link: https://lkml.kernel.org/r/20250510155413259V4JNRXxukdDgzsaL0Fo6a@zte.com.cn
Fixes: f65c64f311 ("delayacct: add delay min to record delay peak")
Signed-off-by: Wang Yaxin <wang.yaxin@zte.com.cn>
Signed-off-by: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: Kun Jiang <jiang.kun2@zte.com.cn>
Reviewed-by: Yang Yang <yang.yang29@zte.com.cn>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-05-20 22:49:39 -07:00
..
acpi
asm-generic
clocksource
crypto
cxl
drm Short summary of fixes pull: 2025-05-09 08:52:24 +10:00
dt-bindings
hyperv
keys
kunit
kvm
linux mm: fix VM_UFFD_MINOR == VM_SHADOW_STACK on USERFAULTFD=y && ARM64_GCS=y 2025-05-20 22:49:38 -07:00
math-emu
media
memory
misc
net
pcmcia
ras
rdma
rv
scsi
soc
sound
target
trace
uapi taskstats: fix struct taskstats breaks backward compatibility since version 15 2025-05-20 22:49:39 -07:00
ufs
vdso
video
xen
Kbuild